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Doran PR, Fomin-Thunemann N, Tang RP, Balog D, Zimmerman B, Kilic K, Martin EA, Kura S, Fisher HP, Chabbott G, Herbert J, Rauscher BC, Jiang JX, Sakadzic S, Boas DA, Devor A, Chen IA, Thunemann M. Widefield in vivo imaging system with two fluorescence and two reflectance channels, a single sCMOS detector, and shielded illumination. bioRxiv 2024:2023.11.07.566086. [PMID: 37986755 PMCID: PMC10659277 DOI: 10.1101/2023.11.07.566086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
SIGNIFICANCE Widefield microscopy of the entire dorsal part of mouse cerebral cortex enables large-scale (mesoscopic) imaging of neuronal activity with fluorescent indicators as well as hemodynamics via oxy- and deoxyhemoglobin absorption. Versatile and cost-effective imaging systems are needed for large-scale, color-multiplexed imaging of multiple fluorescent and intrinsic contrasts. AIM Develop a system for mesoscopic imaging of two fluorescent and two reflectance channels. APPROACH Excitation of red and green fluorescence is achieved through epi-illumination. Hemoglobin absorption imaging is achieved using 525- and 625nm LEDs positioned around the objective lens. An aluminum hemisphere placed between objective and cranial window provides diffuse illumination of the brain. Signals are recorded sequentially by a single sCMOS detector. RESULTS We demonstrate performance of our imaging system by recording large-scale spontaneous and stimulus-evoked neuronal, cholinergic, and hemodynamic activity in awake head-fixed mice with a curved crystal skull window expressing the red calcium indicator jRGECO1a and the green acetylcholine sensor GRABACh3.0 . Shielding of illumination light through the aluminum hemisphere enables concurrent recording of pupil diameter changes. CONCLUSIONS Our widefield microscope design with single camera can be used to acquire multiple aspects of brain physiology and is compatible with behavioral readouts of pupil diameter.
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Manentzos AN, Pahl AMC, Melloh P, Martin EA, Leybourne DJ. Low prevalence of secondary endosymbionts in aphids sampled from rapeseed crops in Germany. Bull Entomol Res 2024:1-6. [PMID: 38444236 DOI: 10.1017/s0007485324000063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
Peach-potato aphids, Myzus persicae Sulzer (Hemiptera:Aphididae), and cabbage aphids, Brevicoryne brassicae Linnaeus (Hemiptera:Aphididae), are herbivorous insects of significant agricultural importance. Aphids can harbour a range of non-essential (facultative) endosymbiotic bacteria that confer multiple costs and benefits to the host aphid. A key endosymbiont-derived phenotype is protection against parasitoid wasps, and this protective phenotype has been associated with several defensive enodsymbionts. In recent years greater emphasis has been placed on developing alternative pest management strategies, including the increased use of natural enemies such as parasitoids wasps. For the success of aphid control strategies to be estimated the presence of defensive endosymbionts that can potentially disrupt the success of biocontrol agents needs to be determined in natural aphid populations. Here, we sampled aphids and mummies (parasitised aphids) from an important rapeseed production region in Germany and used multiplex PCR assays to characterise the endosymbiont communities. We found that aphids rarely harboured facultative endosymbionts, with 3.6% of M. persicae and 0% of B. brassicae populations forming facultative endosymbiont associations. This is comparable with endosymbiont prevalence described for M. persicae populations surveyed in Australia, Europe, Chile, and USA where endosymbiont infection frequencies range form 0-2%, but is in contrast with observations from China where M. persicae populations have more abundant and diverse endosymbiotic communities (endosymbionts present in over 50% of aphid populations).
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Affiliation(s)
- A N Manentzos
- Zoological Biodiversity, Institute of Geobotany, Gottfried Wilhelm Leibniz University Hannover, Hannover, Germany
| | - A M C Pahl
- Zoological Biodiversity, Institute of Geobotany, Gottfried Wilhelm Leibniz University Hannover, Hannover, Germany
| | - P Melloh
- Zoological Biodiversity, Institute of Geobotany, Gottfried Wilhelm Leibniz University Hannover, Hannover, Germany
| | - E A Martin
- Animal Ecology, Institute of Animal Ecology and Systematics, Justus Liebig University of Gießen, Gießen, Germany
| | - D J Leybourne
- Department of Evolution, Ecology, and Behaviour, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK
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3
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Priyadarshana TS, Martin EA, Sirami C, Woodcock BA, Goodale E, Martínez-Núñez C, Lee MB, Pagani-Núñez E, Raderschall CA, Brotons L, Rege A, Ouin A, Tscharntke T, Slade EM. Crop and landscape heterogeneity increase biodiversity in agricultural landscapes: A global review and meta-analysis. Ecol Lett 2024; 27:e14412. [PMID: 38549269 DOI: 10.1111/ele.14412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 03/03/2024] [Accepted: 03/06/2024] [Indexed: 04/02/2024]
Abstract
Agricultural intensification not only increases food production but also drives widespread biodiversity decline. Increasing landscape heterogeneity has been suggested to increase biodiversity across habitats, while increasing crop heterogeneity may support biodiversity within agroecosystems. These spatial heterogeneity effects can be partitioned into compositional (land-cover type diversity) and configurational heterogeneity (land-cover type arrangement), measured either for the crop mosaic or across the landscape for both crops and semi-natural habitats. However, studies have reported mixed responses of biodiversity to increases in these heterogeneity components across taxa and contexts. Our meta-analysis covering 6397 fields across 122 studies conducted in Asia, Europe, North and South America reveals consistently positive effects of crop and landscape heterogeneity, as well as compositional and configurational heterogeneity for plant, invertebrate, vertebrate, pollinator and predator biodiversity. Vertebrates and plants benefit more from landscape heterogeneity, while invertebrates derive similar benefits from both crop and landscape heterogeneity. Pollinators benefit more from configurational heterogeneity, but predators favour compositional heterogeneity. These positive effects are consistent for invertebrates and vertebrates in both tropical/subtropical and temperate agroecosystems, and in annual and perennial cropping systems, and at small to large spatial scales. Our results suggest that promoting increased landscape heterogeneity by diversifying crops and semi-natural habitats, as suggested in the current UN Decade on Ecosystem Restoration, is key for restoring biodiversity in agricultural landscapes.
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Affiliation(s)
- Tharaka S Priyadarshana
- Asian School of the Environment, Nanyang Technological University, Singapore City, Singapore
| | - Emily A Martin
- Animal Ecology, Institute of Animal Ecology and Systematics, Justus Liebig University of Gießen, Gießen, Germany
| | - Clélia Sirami
- Université de Toulouse, INRAE, UMR Dynafor, Castanet-Tolosan, France
| | - Ben A Woodcock
- UK Centre for Ecology and Hydrology, Wallingford, Oxfordshire, UK
| | - Eben Goodale
- Department of Health and Environmental Sciences, Xi'an Jiaotong-Liverpool University, Suzhou, Jiangsu, China
| | - Carlos Martínez-Núñez
- Department of Ecology and Evolution, Estación Biológica de Doñana EBD (CSIC), Seville, Spain
| | - Myung-Bok Lee
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou, China
| | - Emilio Pagani-Núñez
- Centre for Conservation and Restoration Science, School of Applied Sciences, Edinburgh Napier University, Edinburgh, UK
| | - Chloé A Raderschall
- Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Alnarp, Sweden
| | | | - Anushka Rege
- Centre for Nature-Based Climate Solutions, National University of Singapore, Singapore City, Singapore
| | - Annie Ouin
- Université de Toulouse, INRAE, UMR Dynafor, Castanet-Tolosan, France
| | - Teja Tscharntke
- Department of Agroecology, University of Göttingen, Göttingen, Germany
| | - Eleanor M Slade
- Asian School of the Environment, Nanyang Technological University, Singapore City, Singapore
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4
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Hua F, Wang W, Nakagawa S, Liu S, Miao X, Yu L, Du Z, Abrahamczyk S, Arias-Sosa LA, Buda K, Budka M, Carrière SM, Chandler RB, Chiatante G, Chiawo DO, Cresswell W, Echeverri A, Goodale E, Huang G, Hulme MF, Hutto RL, Imboma TS, Jarrett C, Jiang Z, Kati VI, King DI, Kmecl P, Li N, Lövei GL, Macchi L, MacGregor-Fors I, Martin EA, Mira A, Morelli F, Ortega-Álvarez R, Quan RC, Salgueiro PA, Santos SM, Shahabuddin G, Socolar JB, Soh MCK, Sreekar R, Srinivasan U, Wilcove DS, Yamaura Y, Zhou L, Elsen PR. Ecological filtering shapes the impacts of agricultural deforestation on biodiversity. Nat Ecol Evol 2024; 8:251-266. [PMID: 38182682 DOI: 10.1038/s41559-023-02280-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 11/14/2023] [Indexed: 01/07/2024]
Abstract
The biodiversity impacts of agricultural deforestation vary widely across regions. Previous efforts to explain this variation have focused exclusively on the landscape features and management regimes of agricultural systems, neglecting the potentially critical role of ecological filtering in shaping deforestation tolerance of extant species assemblages at large geographical scales via selection for functional traits. Here we provide a large-scale test of this role using a global database of species abundance ratios between matched agricultural and native forest sites that comprises 71 avian assemblages reported in 44 primary studies, and a companion database of 10 functional traits for all 2,647 species involved. Using meta-analytic, phylogenetic and multivariate methods, we show that beyond agricultural features, filtering by the extent of natural environmental variability and the severity of historical anthropogenic deforestation shapes the varying deforestation impacts across species assemblages. For assemblages under greater environmental variability-proxied by drier and more seasonal climates under a greater disturbance regime-and longer deforestation histories, filtering has attenuated the negative impacts of current deforestation by selecting for functional traits linked to stronger deforestation tolerance. Our study provides a previously largely missing piece of knowledge in understanding and managing the biodiversity consequences of deforestation by agricultural deforestation.
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Affiliation(s)
- Fangyuan Hua
- Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, China.
| | - Weiyi Wang
- Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, China
- School of Natural Sciences, University of Tasmania, Hobart, Tasmania, Australia
| | - Shinichi Nakagawa
- Evolution and Ecology Research Centre and School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Shuangqi Liu
- Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Xinran Miao
- Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, China
- Fenner School of Environment and Society, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Le Yu
- Department of Earth System Science, Ministry of Education Key Laboratory for Earth System Modeling, Institute for Global Change Studies, Tsinghua University, Beijing, China
- Ministry of Education Ecological Field Station for East Asia Migratory Birds, Tsinghua University, Beijing, China
- Tsinghua University (Department of Earth System Science)-Xi'an Institute of Surveying and Mapping Joint Research Center for Next-Generation Smart Mapping, Beijing, China
| | - Zhenrong Du
- Department of Earth System Science, Ministry of Education Key Laboratory for Earth System Modeling, Institute for Global Change Studies, Tsinghua University, Beijing, China
| | - Stefan Abrahamczyk
- Department of Botany, State Museum of Natural History Stuttgart, Stuttgart, Germany
| | - Luis Alejandro Arias-Sosa
- Laboratorio de Ecología de Organismos (GEO-UPTC), Escuela de Ciencias Biológicas, Universidad Pedagógica y Tecnológica de Colombia, Tunja, Colombia
| | - Kinga Buda
- Department of Behavioural Ecology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - Michał Budka
- Department of Behavioural Ecology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - Stéphanie M Carrière
- Institut de Recherche pour le Développement, UMR SENS, IRD, CIRAD, Université Paul Valéry Montpellier 3, Université de Montpellier, Montpellier, France
| | - Richard B Chandler
- Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA, USA
| | | | - David O Chiawo
- Centre for Biodiversity Information Development, Strathmore University, Nairobi, Kenya
| | - Will Cresswell
- Centre of Biological Diversity, University of St Andrews, St Andrews, Scotland
| | - Alejandra Echeverri
- Department of Environmental Science, Policy and Management, University of California Berkeley, Berkeley, CA, USA
| | - Eben Goodale
- Department of Health and Environmental Science, Xi'an Jiaotong-Liverpool University, Suzhou, China
| | - Guohualing Huang
- School of Environment and Science, Griffith University, Brisbane, Queensland, Australia
| | - Mark F Hulme
- Department of Life Sciences, Faculty of Science and Technology, University of the West Indies, St Augustine, Trinidad and Tobago
- British Trust for Ornithology, Norfolk, UK
| | - Richard L Hutto
- Division of Biological Sciences, University of Montana, Missoula, MT, USA
| | - Titus S Imboma
- Ornithology Section, Zoology Department, National Museums of Kenya, Nairobi, Kenya
| | - Crinan Jarrett
- Department of Bird Migration, Swiss Ornithological Institute, Sempach, Switzerland
| | - Zhigang Jiang
- Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Vassiliki I Kati
- Department of Biological Applications and Technology, University of Ioannina, Ioannina, Greece
| | - David I King
- Northern Research Station, USDA Forest Service, Amherst, MA, USA
| | - Primož Kmecl
- Group for Conservation Biology, DOPPS BirdLife Slovenia, Ljubljana, Slovenia
| | - Na Li
- Institute of Eastern-Himalaya Biodiversity Research, Dali University, Dali, China
| | - Gábor L Lövei
- Institute of Applied Ecology, Fujian University of Agriculture and Forestry, Fuzhou, China
- HUN-REN-DE Anthropocene Ecology Research Group, University of Debrecen, Debrecen, Hungary
| | - Leandro Macchi
- Instituto de Ecología Regional (IER), CONICET, Universidad Nacional de Tucumán, Tucumán, Argentina
| | - Ian MacGregor-Fors
- Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Lahti, Finland
| | - Emily A Martin
- Institute of Animal Ecology and Systematic Zoology, Justus Liebig University of Gießen, Giessen, Germany
| | - António Mira
- MED (Mediterranean Institute for Agriculture, Environment and Development), CHANGE (Global Change and Sustainability Institute) and UBC (Conservation Biology Lab), Department of Biology, School of Sciences and Technology, University of Évora, Évora, Portugal
| | - Federico Morelli
- Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic
- Department of Life and Environmental Sciences, Bournemouth University, Poole, UK
| | - Rubén Ortega-Álvarez
- Investigadoras e Investigadores por México del Consejo Nacional de Ciencia y Tecnología (CONACYT), Dirección Regional Occidente, Mexico City, Mexico
| | - Rui-Chang Quan
- Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, China
| | - Pedro A Salgueiro
- MED (Mediterranean Institute for Agriculture, Environment and Development), CHANGE (Global Change and Sustainability Institute), Institute for Advanced Studies and Research and UBC (Conservation Biology Lab), University of Évora, Évora, Portugal
| | - Sara M Santos
- MED (Mediterranean Institute for Agriculture, Environment and Development), CHANGE (Global Change and Sustainability Institute), Institute for Advanced Studies and Research and UBC (Conservation Biology Lab), University of Évora, Évora, Portugal
| | | | | | | | - Rachakonda Sreekar
- Centre for Nature-based Climate Solutions, National University of Singapore, Singapore, Singapore
| | - Umesh Srinivasan
- Centre for Ecological Sciences, Indian Institute of Science, Bangalore, India
| | - David S Wilcove
- School of Public and International Affairs and Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, USA
| | - Yuichi Yamaura
- Shikoku Research Center, Forestry and Forest Products Research Institute, Kochi, Japan
| | - Liping Zhou
- Kunming Natural History Museum of Zoology, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Paul R Elsen
- Global Conservation Program, Wildlife Conservation Society, Bronx, NY, USA
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5
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Boetzl FA, Sponsler D, Albrecht M, Batáry P, Birkhofer K, Knapp M, Krauss J, Maas B, Martin EA, Sirami C, Sutter L, Bertrand C, Baillod AB, Bota G, Bretagnolle V, Brotons L, Frank T, Fusser M, Giralt D, González E, Hof AR, Luka H, Marrec R, Nash MA, Ng K, Plantegenest M, Poulin B, Siriwardena GM, Tscharntke T, Tschumi M, Vialatte A, Van Vooren L, Zubair-Anjum M, Entling MH, Steffan-Dewenter I, Schirmel J. Distance functions of carabids in crop fields depend on functional traits, crop type and adjacent habitat: a synthesis. Proc Biol Sci 2024; 291:20232383. [PMID: 38196355 PMCID: PMC10777163 DOI: 10.1098/rspb.2023.2383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 12/01/2023] [Indexed: 01/11/2024] Open
Abstract
Natural pest and weed regulation are essential for agricultural production, but the spatial distribution of natural enemies within crop fields and its drivers are mostly unknown. Using 28 datasets comprising 1204 study sites across eight Western and Central European countries, we performed a quantitative synthesis of carabid richness, activity densities and functional traits in relation to field edges (i.e. distance functions). We show that distance functions of carabids strongly depend on carabid functional traits, crop type and, to a lesser extent, adjacent non-crop habitats. Richness of both carnivores and granivores, and activity densities of small and granivorous species decreased towards field interiors, whereas the densities of large species increased. We found strong distance decays in maize and vegetables whereas richness and densities remained more stable in cereals, oilseed crops and legumes. We conclude that carabid assemblages in agricultural landscapes are driven by the complex interplay of crop types, adjacent non-crop habitats and further landscape parameters with great potential for targeted agroecological management. In particular, our synthesis indicates that a higher edge-interior ratio can counter the distance decay of carabid richness per field and thus likely benefits natural pest and weed regulation, hence contributing to agricultural sustainability.
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Affiliation(s)
- Fabian A. Boetzl
- Department of Ecology, Swedish University of Agricultural Sciences, Uppsala SE-750 07, Sweden
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, Würzburg 97074 Germany
| | - Douglas Sponsler
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, Würzburg 97074 Germany
| | - Matthias Albrecht
- Agroecology and Environment, Agroscope, Reckenholzstrasse 191, Zurich 8046, Switzerland
| | - Péter Batáry
- ‘Lendület’ Landscape and Conservation Ecology, Institute of Ecology and Botany, HUN-REN Centre for Ecological Research, 2163 Vácrátót, Alkotmány út 2-4, Hungary
| | - Klaus Birkhofer
- Department of Ecology, Brandenburg University of Technology Cottbus-Senftenberg, Cottbus 03046, Germany
| | - Michal Knapp
- Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Praha-Suchdol 165 00, Czech Republic
| | - Jochen Krauss
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, Würzburg 97074 Germany
| | - Bea Maas
- Department of Botany and Biodiversity Research, Division of Biodiversity Dynamics and Conservation, University of Vienna, Rennweg 14, 1030 Vienna, Austria
| | - Emily A. Martin
- Department of Animal Ecology, Justus Liebig University Giessen, Heinrich-Buff-Ring 26-32, 35392 Giessen, Germany
| | - Clélia Sirami
- UMR Dynafor, INRAE, Toulouse University, 31326 Castanet Tolosan, France
- LTSER Zone Atelier « PYRÉNÉES GARONNE », 31320 Auzeville-Tolosane, France
| | - Louis Sutter
- Plant-Production Systems, Agroscope, Route des Eterpys 18, 1964 Conthey, Switzerland
| | - Colette Bertrand
- Université Paris-Saclay, INRAE, AgroParisTech, UMR EcoSys, 91120 Palaiseau, France
- INRAE, Institut Agro, ESA, UMR BAGAP, 35042 Rennes, France
| | - Aliette Bosem Baillod
- Research Institute of Organic Agriculture (FiBL), Ackerstrasse 113, Postfach, Frick 5070, Switzerland
| | - Gerard Bota
- Landscape Dynamics and Biodiversity Program, Forest Science and Technology Centre of Catalonia (CTFC), Crtra. Sant Llorenç de Morunys, km 2, 25280 Solsona, Spain
| | - Vincent Bretagnolle
- CEBC, UMR 7372, CNRS & La Rochelle Université, 79360 Villiers-en-Bois, France
- LTSER ‘Zone Atelier Plaine & Val de Sèvre’, CNRS, 79360 Villiers-en-Bois, France
| | - Lluís Brotons
- Landscape Dynamics and Biodiversity Program, Forest Science and Technology Centre of Catalonia (CTFC), Crtra. Sant Llorenç de Morunys, km 2, 25280 Solsona, Spain
- CREAF, Cerdanyola del Vallès 08193, Spain
- CSIC, Cerdanyola del Vallès 08193, Spain
| | - Thomas Frank
- Institute of Zoology, University of Natural Resources and Life Sciences, Vienna 1180, Austria
| | - Moritz Fusser
- iES Landau, Institute for Environmental Sciences, Ecosystem Analysis, University of Kaiserslautern-Landau, Fortstrasse 7, Landau 76829, Germany
| | - David Giralt
- Landscape Dynamics and Biodiversity Program, Forest Science and Technology Centre of Catalonia (CTFC), Crtra. Sant Llorenç de Morunys, km 2, 25280 Solsona, Spain
| | - Ezequiel González
- Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Praha-Suchdol 165 00, Czech Republic
- Instituto Multidisciplinario de Biología Vegetal (CONICET-Universidad Nacional de Córdoba), Av. Velez Sarsfield 1611, 5000 Córdoba, Argentina
| | - Anouschka R. Hof
- Wildlife Ecology and Conservation Group, Wageningen University, Droevendaalsesteeg 3, 6708 PB, Wageningen, the Netherlands
| | - Henryk Luka
- Research Institute of Organic Agriculture (FiBL), Ackerstrasse 113, Postfach, Frick 5070, Switzerland
| | - Ronan Marrec
- Ecologie et Dynamique des Systèmes Anthropisés (EDYSAN, UMR CNRS 7058), Université de Picardie Jules Verne, Amiens, France
| | - Michael A. Nash
- Department of Ecology, Environment & Evolution, School of Life Science, La Trobe University, Bundoora, Victoria 3086, Australia
| | - Katherina Ng
- Fenner School of Environment and Society, The Australian National University, Canberra, Australia
| | | | - Brigitte Poulin
- Tour du Valat Research Institute for the conservation of Mediterranean wetlands, Le Sambuc, 13200 Arles, France
| | | | - Teja Tscharntke
- Agroecology, Department of Crop Science, University of Göttingen, Göttingen, Germany
| | - Matthias Tschumi
- Agroecology and Environment, Agroscope, Reckenholzstrasse 191, Zurich 8046, Switzerland
- Swiss Ornithological Institute, Seerose 1, CH-6204 Sempach, Switzerland
| | - Aude Vialatte
- UMR Dynafor, INRAE, Toulouse University, 31326 Castanet Tolosan, France
- LTSER Zone Atelier « PYRÉNÉES GARONNE », 31320 Auzeville-Tolosane, France
| | - Laura Van Vooren
- Faculty of Bioscience Engineering, Department of Forest and Water Management, Forest & Nature Lab, Ghent University, Geraardsbergsesteenweg 267, 9090 Gontrode, Belgium
| | - Muhammad Zubair-Anjum
- Department of Zoology & Biology, Faculty of Sciences, Pir Mehr Ali Shah Arid Agriculture University Rawalpindi, Rawalpindi, Pakistan
| | - Martin H. Entling
- iES Landau, Institute for Environmental Sciences, Ecosystem Analysis, University of Kaiserslautern-Landau, Fortstrasse 7, Landau 76829, Germany
| | - Ingolf Steffan-Dewenter
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, Würzburg 97074 Germany
| | - Jens Schirmel
- iES Landau, Institute for Environmental Sciences, Ecosystem Analysis, University of Kaiserslautern-Landau, Fortstrasse 7, Landau 76829, Germany
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6
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Martin EA, Solomon JA, Karnia JJ, Leach SB. Budd-Chiari-like syndrome in a dog secondary to a gunshot wound treated with balloon angioplasty and endovascular stent placement. J Vet Cardiol 2023; 48:46-53. [PMID: 37433242 DOI: 10.1016/j.jvc.2023.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 06/06/2023] [Accepted: 06/13/2023] [Indexed: 07/13/2023]
Abstract
A 6-year-old female spayed Chihuahua mix presented with chronic recurrent ascites. Computed tomographic angiography revealed an isolated stenosis of the caudal vena cava secondary to a metallic foreign body, resulting in Budd-Chiari-like syndrome. Balloon angioplasty and endovascular stent placement successfully resolved the obstruction with long-term resolution of ascites.
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Affiliation(s)
- E A Martin
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Missouri, 1600 East Rollins, Columbia, MO, 65211, USA
| | - J A Solomon
- Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA, 19104, USA
| | - J J Karnia
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Missouri, 1600 East Rollins, Columbia, MO, 65211, USA
| | - S B Leach
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Missouri, 1600 East Rollins, Columbia, MO, 65211, USA.
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7
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Alexandridis N, Marion G, Chaplin‐Kramer R, Dainese M, Ekroos J, Grab H, Jonsson M, Karp DS, Meyer C, O'Rourke ME, Pontarp M, Poveda K, Seppelt R, Smith HG, Walters RJ, Clough Y, Martin EA. Archetype models upscale understanding of natural pest control response to land-use change. Ecol Appl 2022; 32:e2696. [PMID: 35735258 PMCID: PMC10078142 DOI: 10.1002/eap.2696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 04/26/2022] [Accepted: 05/05/2022] [Indexed: 06/15/2023]
Abstract
Control of crop pests by shifting host plant availability and natural enemy activity at landscape scales has great potential to enhance the sustainability of agriculture. However, mainstreaming natural pest control requires improved understanding of how its benefits can be realized across a variety of agroecological contexts. Empirical studies suggest significant but highly variable responses of natural pest control to land-use change. Current ecological models are either too specific to provide insight across agroecosystems or too generic to guide management with actionable predictions. We suggest obtaining the full benefit of available empirical, theoretical, and methodological knowledge by combining trait-mediated understanding from correlative studies with the explicit representation of causal relationships achieved by mechanistic modeling. To link these frameworks, we adapt the concept of archetypes, or context-specific generalizations, from sustainability science. Similar responses of natural pest control to land-use gradients across cases that share key attributes, such as functional traits of focal organisms, indicate general processes that drive system behavior in a context-sensitive manner. Based on such observations of natural pest control, a systematic definition of archetypes can provide the basis for mechanistic models of intermediate generality that cover all major agroecosystems worldwide. Example applications demonstrate the potential for upscaling understanding and improving predictions of natural pest control, based on knowledge transfer and scientific synthesis. A broader application of this mechanistic archetype approach promises to enhance ecology's contribution to natural resource management across diverse regions and social-ecological contexts.
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Affiliation(s)
| | - Glenn Marion
- Biomathematics and Statistics ScotlandEdinburghUK
| | - Rebecca Chaplin‐Kramer
- Stanford University, Woods Institute for the Environment, Natural Capital ProjectStanfordCaliforniaUSA
- University of Minnesota, Institute on the EnvironmentSt. PaulMinnesotaUSA
| | - Matteo Dainese
- Eurac ResearchInstitute for Alpine EnvironmentBozen/BolzanoItaly
| | - Johan Ekroos
- Lund University, Centre for Environmental and Climate Science (CEC)LundSweden
- Present address:
Department of Agricultural SciencesUniversity of HelsinkiHelsinkiFinland
| | - Heather Grab
- Department of EntomologyCornell UniversityIthacaNew YorkUSA
| | - Mattias Jonsson
- Department of EcologySwedish University of Agricultural SciencesUppsalaSweden
| | - Daniel S. Karp
- Department of Wildlife, Fish, and Conservation BiologyUniversity of California – DavisDavisCaliforniaUSA
| | - Carsten Meyer
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐LeipzigLeipzigGermany
- Faculty of Biosciences, Pharmacy and PsychologyUniversity of LeipzigLeipzigGermany
- Martin Luther University Halle‐Wittenberg, Institute of Geoscience & GeographyHalle (Saale)Germany
| | - Megan E. O'Rourke
- Department of HorticultureVirginia Polytechnic Institute and State UniversityBlacksburgVirginiaUSA
| | | | - Katja Poveda
- Department of EntomologyCornell UniversityIthacaNew YorkUSA
| | - Ralf Seppelt
- Martin Luther University Halle‐Wittenberg, Institute of Geoscience & GeographyHalle (Saale)Germany
- Department of Computational Landscape EcologyHelmholtz Centre for Environmental Research – UFZLeipzigGermany
| | - Henrik G. Smith
- Lund University, Centre for Environmental and Climate Science (CEC)LundSweden
- Department of BiologyLund UniversityLundSweden
| | - Richard J. Walters
- Lund University, Centre for Environmental and Climate Science (CEC)LundSweden
| | - Yann Clough
- Lund University, Centre for Environmental and Climate Science (CEC)LundSweden
| | - Emily A. Martin
- Leibniz University Hannover, Institute of Geobotany, Zoological BiodiversityHannoverGermany
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8
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Mächler P, Fomin-Thunemann N, Thunemann M, Sætra MJ, Desjardins M, Kılıç K, Amra LN, Martin EA, Chen IA, Şencan-Eğilmez I, Li B, Saisan P, Jiang JX, Cheng Q, Weldy KL, Boas DA, Buxton RB, Einevoll GT, Dale AM, Sakadžić S, Devor A. Baseline oxygen consumption decreases with cortical depth. PLoS Biol 2022; 20:e3001440. [PMID: 36301995 PMCID: PMC9642908 DOI: 10.1371/journal.pbio.3001440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 11/08/2022] [Accepted: 09/30/2022] [Indexed: 11/05/2022] Open
Abstract
The cerebral cortex is organized in cortical layers that differ in their cellular density, composition, and wiring. Cortical laminar architecture is also readily revealed by staining for cytochrome oxidase-the last enzyme in the respiratory electron transport chain located in the inner mitochondrial membrane. It has been hypothesized that a high-density band of cytochrome oxidase in cortical layer IV reflects higher oxygen consumption under baseline (unstimulated) conditions. Here, we tested the above hypothesis using direct measurements of the partial pressure of O2 (pO2) in cortical tissue by means of 2-photon phosphorescence lifetime microscopy (2PLM). We revisited our previously developed method for extraction of the cerebral metabolic rate of O2 (CMRO2) based on 2-photon pO2 measurements around diving arterioles and applied this method to estimate baseline CMRO2 in awake mice across cortical layers. To our surprise, our results revealed a decrease in baseline CMRO2 from layer I to layer IV. This decrease of CMRO2 with cortical depth was paralleled by an increase in tissue oxygenation. Higher baseline oxygenation and cytochrome density in layer IV may serve as an O2 reserve during surges of neuronal activity or certain metabolically active brain states rather than reflecting baseline energy needs. Our study provides to our knowledge the first quantification of microscopically resolved CMRO2 across cortical layers as a step towards better understanding of brain energy metabolism.
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Affiliation(s)
- Philipp Mächler
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
| | - Natalie Fomin-Thunemann
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
| | - Martin Thunemann
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
| | - Marte Julie Sætra
- Department of Numerical Analysis and Scientific Computing, Simula Research Laboratory, Oslo, Norway
| | - Michèle Desjardins
- Département de Physique, de Génie Physique et d’Optique and Axe Oncologie, Centre de Recherche du CHU de Québec–Université Laval, Université Laval, Québec, Canada
| | - Kıvılcım Kılıç
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
| | - Layth N. Amra
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
| | - Emily A. Martin
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
| | - Ichun Anderson Chen
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
| | - Ikbal Şencan-Eğilmez
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Harvard Medical School, Massachusetts General Hospital, Charlestown, Massachusetts, United States of America
| | - Baoqiang Li
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Harvard Medical School, Massachusetts General Hospital, Charlestown, Massachusetts, United States of America
| | - Payam Saisan
- Department of Neurosciences, University of California San Diego, La Jolla, California, United States of America
| | - John X. Jiang
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
| | - Qun Cheng
- Department of Neurosciences, University of California San Diego, La Jolla, California, United States of America
| | - Kimberly L. Weldy
- Department of Neurosciences, University of California San Diego, La Jolla, California, United States of America
| | - David A. Boas
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
| | - Richard B. Buxton
- Department of Radiology, University of California San Diego, La Jolla, California, United States of America
| | - Gaute T. Einevoll
- Department of Physics, University of Oslo, Oslo, Norway
- Department of Physics, Norwegian University of Life Sciences, Ås, Norway
| | - Anders M. Dale
- Department of Neurosciences, University of California San Diego, La Jolla, California, United States of America
- Department of Radiology, University of California San Diego, La Jolla, California, United States of America
| | - Sava Sakadžić
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Harvard Medical School, Massachusetts General Hospital, Charlestown, Massachusetts, United States of America
- * E-mail: (SS); (AD)
| | - Anna Devor
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Harvard Medical School, Massachusetts General Hospital, Charlestown, Massachusetts, United States of America
- * E-mail: (SS); (AD)
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9
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Vansynghel J, Ocampo-Ariza C, Maas B, Martin EA, Thomas E, Hanf-Dressler T, Schumacher NC, Ulloque-Samatelo C, Yovera FF, Tscharntke T, Steffan-Dewenter I. Quantifying services and disservices provided by insects and vertebrates in cacao agroforestry landscapes. Proc Biol Sci 2022; 289:20221309. [PMID: 36100014 PMCID: PMC9470269 DOI: 10.1098/rspb.2022.1309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Animals provide services such as pollination and pest control in cacao agroforestry systems, but also disservices. Yet, their combined contributions to crop yield and fruit loss are mostly unclear. In a full-factorial field experiment in northwestern Peru, we excluded flying insects, ants, birds and bats from cacao trees and assessed several productivity indicators. We quantified the contribution of each group to fruit set, fruit loss and marketable yield and evaluated how forest distance and canopy closure affected productivity. Fruit set dropped (from 1.7% to 0.3%) when flying insects were excluded and tripled at intermediate (40%) compared to high (greater than 80%) canopy cover in the non-exclusion treatment. Fruit set also dropped with bird and bat exclusion, potentially due to increased abundances of arthropods preying on pollinators or flower herbivores. Overall, cacao yields more than doubled when birds and bats had access to trees. Ants were generally associated with fruit loss, but also with yield increases in agroforests close to forest. We also evidenced disservices generated by squirrels, leading to significant fruit losses. Our findings show that several functional groups contribute to high cacao yield, while trade-offs between services and disservices need to be integrated in local and landscape-scale sustainable cacao agroforestry management.
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Affiliation(s)
- Justine Vansynghel
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074 Würzburg, Germany.,Alliance of Bioversity International and CIAT, Lima office, Avenida La Molina 1895, La Molina 12, Lima, Peru
| | - Carolina Ocampo-Ariza
- Alliance of Bioversity International and CIAT, Lima office, Avenida La Molina 1895, La Molina 12, Lima, Peru.,Agroecology, Department of Crop Sciences, University of Göttingen, Grisebachstr. 6, 37077 Göttingen, Germany
| | - Bea Maas
- Agroecology, Department of Crop Sciences, University of Göttingen, Grisebachstr. 6, 37077 Göttingen, Germany.,Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030 Vienna, Austria
| | - Emily A Martin
- Zoological Biodiversity, Institute of Geobotany, Leibniz University Hannover, Nienburger Straße 17, 30167 Hannover, Germany
| | - Evert Thomas
- Alliance of Bioversity International and CIAT, Lima office, Avenida La Molina 1895, La Molina 12, Lima, Peru
| | - Tara Hanf-Dressler
- Agroecology, Department of Crop Sciences, University of Göttingen, Grisebachstr. 6, 37077 Göttingen, Germany
| | - Nils-Christian Schumacher
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Carlos Ulloque-Samatelo
- Universidad Nacional de Piura, Urb. Miraflores s/n, 295 Piura, Peru.,Universidad Continental Arequipa, Ciencias de la Empresa, Av. Los Incas s/n Urb. Lambramani, José Luis Bustamante y Rivero, Arequipa, Peru
| | - Fredy F Yovera
- Alliance of Bioversity International and CIAT, Lima office, Avenida La Molina 1895, La Molina 12, Lima, Peru.,Norandino Ltds. Mz X Lote 3 y 4, Zona Industrial II etapa, Piura, Peru
| | - Teja Tscharntke
- Agroecology, Department of Crop Sciences, University of Göttingen, Grisebachstr. 6, 37077 Göttingen, Germany
| | - Ingolf Steffan-Dewenter
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
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10
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Krimmer E, Martin EA, Holzschuh A, Krauss J, Steffan‐Dewenter I. Flower fields and pesticide use interactively shape pollen beetle infestation and parasitism in oilseed rape fields. J Appl Ecol 2021. [DOI: 10.1111/1365-2664.14051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Elena Krimmer
- Department of Animal Ecology and Tropical Biology Biocenter University of Würzburg Würzburg Germany
| | - Emily A. Martin
- Zoological Biodiversity Institute of Geobotany Leibniz University of Hannover Hannover Germany
| | - Andrea Holzschuh
- Department of Animal Ecology and Tropical Biology Biocenter University of Würzburg Würzburg Germany
| | - Jochen Krauss
- Department of Animal Ecology and Tropical Biology Biocenter University of Würzburg Würzburg Germany
| | - Ingolf Steffan‐Dewenter
- Department of Animal Ecology and Tropical Biology Biocenter University of Würzburg Würzburg Germany
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11
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Seppelt R, Arndt C, Beckmann M, Martin EA, Hertel TW. Deciphering the Biodiversity-Production Mutualism in the Global Food Security Debate: (Trends in Ecology and Evolution 35, 1011-1020). Trends Ecol Evol 2021; 36:471. [PMID: 33715919 DOI: 10.1016/j.tree.2021.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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12
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Boetzl FA, Krauss J, Heinze J, Hoffmann H, Juffa J, König S, Krimmer E, Prante M, Martin EA, Holzschuh A, Steffan-Dewenter I. A multitaxa assessment of the effectiveness of agri-environmental schemes for biodiversity management. Proc Natl Acad Sci U S A 2021; 118:e2016038118. [PMID: 33649216 PMCID: PMC7958248 DOI: 10.1073/pnas.2016038118] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Agri-environmental schemes (AES) aim to restore biodiversity and biodiversity-mediated ecosystem services in landscapes impoverished by modern agriculture. However, a systematic, empirical evaluation of different AES types across multiple taxa and functional groups is missing. Within one orthogonal design, we studied sown flowering AES types with different temporal continuity, size, and landscape context and used calcareous grasslands as seminatural reference habitat. We measured species richness of 12 taxonomic groups (vascular plants, cicadas, orthopterans, bees, butterflies, moths, hoverflies, flower visiting beetles, parasitoid wasps, carabid beetles, staphylinid beetles, and birds) representing 5 trophic levels. A total of 54,955 specimens were identified using traditional taxonomic methods, and bulk arthropod samples were identified through DNA metabarcoding, resulting in a total of 1,077 and 2,110 taxa, respectively. Species richness of most taxonomic groups, as well as multidiversity and richness of pollinators, increased with temporal continuity of AES types. Some groups responded to size and landscape context, but multidiversity and richness of pollinators and natural enemies were not affected. AES flowering fields supported different species assemblages than calcareous grasslands, but assemblages became more similar to those in seminatural grasslands with increasing temporal continuity. Our results indicate that AES flowering fields and seminatural grasslands function synergistically. Flowering fields support biodiversity even when they are relatively small and in landscapes with few remaining seminatural habitats. We therefore recommend a network of smaller, temporally continuous AES flowering fields of different ages, combined with permanent seminatural grasslands, to maximize benefits for biodiversity conservation and ecosystem service delivery in agricultural landscapes.
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Affiliation(s)
- Fabian A Boetzl
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, 97074 Würzburg, Germany;
| | - Jochen Krauss
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, 97074 Würzburg, Germany
| | - Jonathan Heinze
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, 97074 Würzburg, Germany
| | - Hannes Hoffmann
- Department of Landscape Ecology, Institute for Natural Resource Conservation, University of Kiel, 24118 Kiel, Germany
| | - Jan Juffa
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, 97074 Würzburg, Germany
| | - Sebastian König
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, 97074 Würzburg, Germany
| | - Elena Krimmer
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, 97074 Würzburg, Germany
| | - Maren Prante
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, 97074 Würzburg, Germany
| | - Emily A Martin
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, 97074 Würzburg, Germany
- Zoological Biodiversity, Institute of Geobotany, Leibniz University of Hannover, 30167 Hannover, Germany
| | - Andrea Holzschuh
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, 97074 Würzburg, Germany
| | - Ingolf Steffan-Dewenter
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, 97074 Würzburg, Germany
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13
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Redlich S, Martin EA, Steffan‐Dewenter I. Sustainable landscape, soil and crop management practices enhance biodiversity and yield in conventional cereal systems. J Appl Ecol 2021. [DOI: 10.1111/1365-2664.13821] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sarah Redlich
- Department of Animal Ecology and Tropical Biology Biocenter University of Würzburg Würzburg Germany
| | - Emily A. Martin
- Department of Animal Ecology and Tropical Biology Biocenter University of Würzburg Würzburg Germany
- Zoological Biodiversity Institute of Geobotany Leibniz University of Hannover Hannover Germany
| | - Ingolf Steffan‐Dewenter
- Department of Animal Ecology and Tropical Biology Biocenter University of Würzburg Würzburg Germany
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14
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Tamburini G, Santoiemma G, E O'Rourke M, Bommarco R, Chaplin-Kramer R, Dainese M, Karp DS, Kim TN, Martin EA, Petersen M, Marini L. Species traits elucidate crop pest response to landscape composition: a global analysis. Proc Biol Sci 2020; 287:20202116. [PMID: 33109015 DOI: 10.1098/rspb.2020.2116] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Recent synthesis studies have shown inconsistent responses of crop pests to landscape composition, imposing a fundamental limit to our capacity to design sustainable crop protection strategies to reduce yield losses caused by insect pests. Using a global dataset composed of 5242 observations encompassing 48 agricultural pest species and 26 crop species, we tested the role of pest traits (exotic status, host breadth and habitat breadth) and environmental context (crop type, range in landscape gradient and climate) in modifying the pest response to increasing semi-natural habitats in the surrounding landscape. For natives, increasing semi-natural habitats decreased the abundance of pests that exploit only crop habitats or that are highly polyphagous. On the contrary, populations of exotic pests increased with an increasing cover of semi-natural habitats. These effects might be related to changes in host plants and other resources across the landscapes and/or to modified top-down control by natural enemies. The range of the landscape gradient explored and climate did not affect pests, while crop type modified the response of pests to landscape composition. Although species traits and environmental context helped in explaining some of the variability in pest response to landscape composition, the observed large interspecific differences suggest that a portfolio of strategies must be considered and implemented for the effective control of rapidly changing communities of crop pests in agroecosystems.
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Affiliation(s)
- Giovanni Tamburini
- Department of Soil, Plant and Food Sciences (DiSSPA), University of Bari, Bari, Italy
| | | | - Megan E O'Rourke
- School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA, USA
| | - Riccardo Bommarco
- Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Rebecca Chaplin-Kramer
- Natural Capital Project, Woods Institute for the Environment, Stanford University, Stanford, CA, USA
| | - Matteo Dainese
- Institute for Alpine Environment, Eurac Research, Bozen/Bolzano, Italy
| | - Daniel S Karp
- Department of Wildlife, Fish, and Conservation Biology, University of California, Davis, CA, USA
| | - Tania N Kim
- Department of Entomology, Kansas State University, Manhattan, KS, USA
| | - Emily A Martin
- Zoological Biodiversity, Institute of Geobotany, Leibniz University of Hannover, Hannover, Germany
| | - Matt Petersen
- Department of Entomology, University of Minnesota, St Paul, MN, USA
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15
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Seppelt R, Arndt C, Beckmann M, Martin EA, Hertel TW. Deciphering the Biodiversity-Production Mutualism in the Global Food Security Debate. Trends Ecol Evol 2020; 35:1011-1020. [PMID: 32943219 DOI: 10.1016/j.tree.2020.06.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 06/12/2020] [Accepted: 06/23/2020] [Indexed: 10/23/2022]
Abstract
Without changes in consumption, along with sharp reductions in food waste and postharvest losses, agricultural production must grow to meet future food demands. The variety of concepts and policies relating to yield increases fail to integrate an important constituent of production and human nutrition - biodiversity. We develop an analytical framework to unpack this biodiversity-production mutualism (BPM), which bridges the research fields of ecology and agroeconomics and makes the trade-off between food security and protection of biodiversity explicit. By applying the framework, the incorporation of agroecological principles in global food systems are quantifiable, informed assessments of green total factor productivity (TFP) are supported, and possible lock-ins of the global food system through overintensification and associated biodiversity loss can be avoided.
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Affiliation(s)
- Ralf Seppelt
- UFZ - Helmholtz Centre for Environmental Research, Department of Computational Landscape Ecology, Leipzig, Germany; Institute of Geoscience and Geography, Martin-Luther-University Halle-Wittenberg, Halle (Saale), Germany. (
| | - Channing Arndt
- International Food Policy Research Institute, Washington, DC 20005, USA
| | - Michael Beckmann
- UFZ - Helmholtz Centre for Environmental Research, Department of Computational Landscape Ecology, Leipzig, Germany
| | - Emily A Martin
- Zoological Biodiversity, Institute of Geobotany, Leibniz University Hannover, Hannover, Germany
| | - Thomas W Hertel
- Department of Agricultural Economics, Purdue University, West Lafayette, IN 47907, USA
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16
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Lee S, Xu Y, D Apos Souza AG, Martin EA, Doktorchik C, Zhang Z, Quan H. Unlocking the Potential of Electronic Health Records for Health Research. Int J Popul Data Sci 2020; 5:1123. [PMID: 32935049 PMCID: PMC7473254 DOI: 10.23889/ijpds.v5i1.1123] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Electronic health records (EHRs), originally designed to facilitate health care delivery, are becoming a valuable data source for health research. EHR systems have two components, both of which have various components, and points of data entry, management, and analysis. The “front end” refers to where the data are entered, primarily by healthcare workers (e.g. physicians and nurses). The second component of EHR systems is the electronic data warehouse, or “back-end,” where the data are stored in a relational database. EHR data elements can be of many types, which can be categorized as structured, unstructured free-text, and imaging data. The Sunrise Clinical Manager (SCM) EHR is one example of an inpatient EHR system, which covers the city of Calgary (Alberta, Canada). This system, under the management of Alberta Health Services, is now being explored for research use. The purpose of the present paper is to describe the SCM EHR for research purposes, showing how this generalizes to EHRs in general. We further discuss advantages, challenges (e.g. potential bias and data quality issues), analytical capacities, and requirements associated with using EHRs in a health research context.
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Affiliation(s)
- S Lee
- Department of Community Health Sciences, University of Calgary.,Centre for Health Informatics, University of Calgary.,Analytics, Alberta Health Services
| | - Y Xu
- Department of Community Health Sciences, University of Calgary.,Centre for Health Informatics, University of Calgary
| | - A G D Apos Souza
- Centre for Health Informatics, University of Calgary.,Analytics, Alberta Health Services
| | - E A Martin
- Centre for Health Informatics, University of Calgary.,Analytics, Alberta Health Services
| | - C Doktorchik
- Department of Community Health Sciences, University of Calgary.,Centre for Health Informatics, University of Calgary
| | - Z Zhang
- Department of Community Health Sciences, University of Calgary.,Centre for Health Informatics, University of Calgary
| | - H Quan
- Department of Community Health Sciences, University of Calgary.,Centre for Health Informatics, University of Calgary
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17
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Dainese M, Martin EA, Aizen MA, Albrecht M, Bartomeus I, Bommarco R, Carvalheiro LG, Chaplin-Kramer R, Gagic V, Garibaldi LA, Ghazoul J, Grab H, Jonsson M, Karp DS, Kennedy CM, Kleijn D, Kremen C, Landis DA, Letourneau DK, Marini L, Poveda K, Rader R, Smith HG, Tscharntke T, Andersson GKS, Badenhausser I, Baensch S, Bezerra ADM, Bianchi FJJA, Boreux V, Bretagnolle V, Caballero-Lopez B, Cavigliasso P, Ćetković A, Chacoff NP, Classen A, Cusser S, da Silva e Silva FD, de Groot GA, Dudenhöffer JH, Ekroos J, Fijen T, Franck P, Freitas BM, Garratt MPD, Gratton C, Hipólito J, Holzschuh A, Hunt L, Iverson AL, Jha S, Keasar T, Kim TN, Kishinevsky M, Klatt BK, Klein AM, Krewenka KM, Krishnan S, Larsen AE, Lavigne C, Liere H, Maas B, Mallinger RE, Martinez Pachon E, Martínez-Salinas A, Meehan TD, Mitchell MGE, Molina GAR, Nesper M, Nilsson L, O'Rourke ME, Peters MK, Plećaš M, Potts SG, Ramos DDL, Rosenheim JA, Rundlöf M, Rusch A, Sáez A, Scheper J, Schleuning M, Schmack JM, Sciligo AR, Seymour C, Stanley DA, Stewart R, Stout JC, Sutter L, Takada MB, Taki H, Tamburini G, Tschumi M, Viana BF, Westphal C, Willcox BK, Wratten SD, Yoshioka A, Zaragoza-Trello C, Zhang W, Zou Y, Steffan-Dewenter I. A global synthesis reveals biodiversity-mediated benefits for crop production. Sci Adv 2019; 5:eaax0121. [PMID: 31663019 PMCID: PMC6795509 DOI: 10.1126/sciadv.aax0121] [Citation(s) in RCA: 232] [Impact Index Per Article: 46.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 09/22/2019] [Indexed: 05/21/2023]
Abstract
Human land use threatens global biodiversity and compromises multiple ecosystem functions critical to food production. Whether crop yield-related ecosystem services can be maintained by a few dominant species or rely on high richness remains unclear. Using a global database from 89 studies (with 1475 locations), we partition the relative importance of species richness, abundance, and dominance for pollination; biological pest control; and final yields in the context of ongoing land-use change. Pollinator and enemy richness directly supported ecosystem services in addition to and independent of abundance and dominance. Up to 50% of the negative effects of landscape simplification on ecosystem services was due to richness losses of service-providing organisms, with negative consequences for crop yields. Maintaining the biodiversity of ecosystem service providers is therefore vital to sustain the flow of key agroecosystem benefits to society.
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Affiliation(s)
- Matteo Dainese
- Institute for Alpine Environment, Eurac Research, Viale Druso 1, 39100 Bozen/Bolzano, Italy
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Emily A. Martin
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Marcelo A. Aizen
- Grupo de Ecología de la Polinización, INIBIOMA, Universidad Nacional del Comahue, CONICET, 8400 Bariloche, Rio Negro, Argentina
| | - Matthias Albrecht
- Agroecology and Environment, Agroscope, Reckenholzstrasse 191, 8046 Zurich, Switzerland
| | - Ignasi Bartomeus
- Estación Biológica de Doñana (EBD-CSIC), Integrative Ecology, E-41092 Sevilla, Spain
| | - Riccardo Bommarco
- Swedish University of Agricultural Sciences, Department of Ecology, 750 07 Uppsala, Sweden
| | - Luisa G. Carvalheiro
- Departamento de Ecologia, Universidade Federal de Goias (UFG), Goiânia, Brazil
- Faculdade de Ciencias, Centre for Ecology, Evolution and Environmental Changes (CE3C), Universidade de Lisboa, Lisboa, Portugal
| | | | - Vesna Gagic
- CSIRO, GPO Box 2583, Brisbane, QLD 4001, Australia
| | - Lucas A. Garibaldi
- Instituto de Investigaciones en Recursos Naturales, Agroecología y Desarrollo Rural (IRNAD), Sede Andina, Universidad Nacional de Río Negro (UNRN) y CONICET, Mitre 630, CP 8400 San Carlos de Bariloche, Río Negro, Argentina
| | - Jaboury Ghazoul
- Department of Environmental Systems Science, ETH Zurich, Universitätstrasse 16, 8092 Zurich, Switzerland
| | - Heather Grab
- Department of Entomology, Cornell University, Ithaca, NY 14853, USA
| | - Mattias Jonsson
- Swedish University of Agricultural Sciences, Department of Ecology, 750 07 Uppsala, Sweden
| | - Daniel S. Karp
- Department of Wildlife, Fish and Conservation Biology, University of California Davis, Davis, CA 95616, USA
| | - Christina M. Kennedy
- Global Lands Program, The Nature Conservancy, 117 E. Mountain Avenue, Fort Collins, CO 80524, USA
| | - David Kleijn
- Plant Ecology and Nature Conservation Group, Wageningen University, Droevendaalsesteeg 3a, Wageningen 6708 PB, Netherlands
| | - Claire Kremen
- IRES and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, Canada
| | - Douglas A. Landis
- Department of Entomology and Great Lakes Bioenergy Research Center, Michigan State University, 204 CIPS, 578 Wilson Ave, East Lansing, MI 48824, USA
| | - Deborah K. Letourneau
- Department of Environmental Studies, University of California, Santa Cruz, Santa Cruz, CA 95064, USA
| | - Lorenzo Marini
- DAFNAE, University of Padova, viale dell’Università 16, 35020 Legnaro, Padova, Italy
| | - Katja Poveda
- Department of Entomology, Cornell University, Ithaca, NY 14853, USA
| | - Romina Rader
- School of Environment and Rural Science, University of New England, Armidale, NSW 2350, Australia
| | - Henrik G. Smith
- Centre for Environmental and Climate Research, Lund University, S-223 62 Lund, Sweden
- Department of Biology, Lund University, S-223 62 Lund, Sweden
| | - Teja Tscharntke
- Agroecology, Department of Crop Sciences, University of Göttingen, D-37077 Göttingen, Germany
| | - Georg K. S. Andersson
- Centre for Environmental and Climate Research, Lund University, S-223 62 Lund, Sweden
| | - Isabelle Badenhausser
- USC1339 INRA-CNRS, CEBC UMR 7372, CNRS and Université de La Rochelle, Beauvoir sur Niort 79360, France
- INRA, Unité de Recherche Pluridisciplinaire Prairies et Plantes Fourragères (URP3F), Lusignan 86600, France
| | - Svenja Baensch
- Agroecology, Department of Crop Sciences, University of Göttingen, D-37077 Göttingen, Germany
- Functional Agrobiodiversity, Department of Crop Sciences, University of Göttingen, Germany
| | | | - Felix J. J. A. Bianchi
- Farming Systems Ecology, Wageningen University and Research, P.O. Box 430, 6700 AK Wageningen, Netherlands
| | - Virginie Boreux
- Department of Environmental Systems Science, ETH Zurich, Universitätstrasse 16, 8092 Zurich, Switzerland
- Chair of Nature Conservation and Landscape Ecology, University of Freiburg, Tennenbacher Straße 4, 79106 Freiburg, Germany
| | - Vincent Bretagnolle
- LTSER Zone Atelier Plaine and Val de Sevre, CEBC UMR 7372, CNRS and Université de La Rochelle, Beauvoir sur Niort 79360, France
| | | | - Pablo Cavigliasso
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Concordia, Estacion Yuqueri y vias del Ferrocarril s/n, 3200 Entre Rios, Argentina
| | - Aleksandar Ćetković
- Faculty of Biology, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia
| | - Natacha P. Chacoff
- Instituto de Ecología Regional (IER), Universidad Nacional de Tucumán, CONICET, 4107 Yerba Buena, Tucumán, Argentina
| | - Alice Classen
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Sarah Cusser
- W.K. Kellogg Biological Station, Michigan State University, Hickory Corners, MI 49060, USA
| | - Felipe D. da Silva e Silva
- Federal Institute of Education, Science and Technology of Mato Grosso, Campus of Barra do Garças/MT, 78600-000, Brazil
- Center of Sustainable Development, University of Brasília (UnB)—Campus Universitário Darcy Ribeiro, Asa Norte, Brasília-DF 70910-900, Brazil
| | - G. Arjen de Groot
- Wageningen Environmental Research, Wageningen University and Research, P.O. Box 47, 6700 AA Wageningen, Netherlands
| | - Jan H. Dudenhöffer
- Natural Resources Institute, University of Greenwich, Central Avenue, Chatham Maritime, Kent ME44TB, UK
| | - Johan Ekroos
- Centre for Environmental and Climate Research, Lund University, S-223 62 Lund, Sweden
| | - Thijs Fijen
- Plant Ecology and Nature Conservation Group, Wageningen University, Droevendaalsesteeg 3a, Wageningen 6708 PB, Netherlands
| | - Pierre Franck
- INRA, UR 1115, Plantes et Systèmes de culture Horticoles, 84000 Avignon, France
| | - Breno M. Freitas
- Departamento de Zootecnia–CCA, Universidade Federal do Ceará, 60.356-000 Fortaleza, CE, Brazil
| | - Michael P. D. Garratt
- Centre for Agri-Environmental Research, School of Agriculture, Policy and Development, Reading University, Reading RG6 6AR, UK
| | - Claudio Gratton
- Department of Entomology, University of Wisconsin, Madison, WI 53705, USA
| | - Juliana Hipólito
- Instituto de Investigaciones en Recursos Naturales, Agroecología y Desarrollo Rural (IRNAD), Sede Andina, Universidad Nacional de Río Negro (UNRN) y CONICET, Mitre 630, CP 8400 San Carlos de Bariloche, Río Negro, Argentina
- Instituto Nacional de Pesquisas da Amazônia (INPA), CEP 69.067-375 Manaus, Amazonas, Brazil
| | - Andrea Holzschuh
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Lauren Hunt
- Human-Environment Systems, Ecology, Evolution, and Behavior, Department of Biological Sciences, Boise State University, Boise, ID 83725, USA
| | - Aaron L. Iverson
- Department of Entomology, Cornell University, Ithaca, NY 14853, USA
| | - Shalene Jha
- Department of Integrative Biology, University of Texas at Austin, 205 W 24th Street, 401 Biological Laboratories, Austin, TX 78712, USA
| | - Tamar Keasar
- Department of Biology and Environment, University of Haifa, Oranim, Tivon 36006, Israel
| | - Tania N. Kim
- Department of Entomology, Kansas State University, 125 Waters Hall, Manhattan, KS 66503, USA
| | - Miriam Kishinevsky
- Department of Evolutionary and Environmental Biology, University of Haifa, 3498838 Haifa, Israel
| | - Björn K. Klatt
- Department of Biology, Lund University, S-223 62 Lund, Sweden
- Agroecology, Department of Crop Sciences, University of Göttingen, D-37077 Göttingen, Germany
| | - Alexandra-Maria Klein
- Chair of Nature Conservation and Landscape Ecology, University of Freiburg, Tennenbacher Straße 4, 79106 Freiburg, Germany
| | - Kristin M. Krewenka
- Institute for Plant Science and Microbiology, University of Hamburg, Hamburg, Germany
| | - Smitha Krishnan
- Department of Environmental Systems Science, ETH Zurich, Universitätstrasse 16, 8092 Zurich, Switzerland
- Bioversity International, Bangalore 560 065, India
- Ashoka Trust for Research in Ecology and the Environment (ATREE), Bangalore, India
| | - Ashley E. Larsen
- Bren School of Environmental Science and Management, University of California, Santa Barbara, Santa Barbara, CA 93106-5131, USA
| | - Claire Lavigne
- INRA, UR 1115, Plantes et Systèmes de culture Horticoles, 84000 Avignon, France
| | - Heidi Liere
- Department of Environmental Studies, Seattle University, 901 12th Avenue, Seattle, WA 9812, USA
| | - Bea Maas
- Department of Botany and Biodiversity Research, Division of Conservation Biology, Vegetation Ecology and Landscape Ecology, University of Vienna, Rennweg 14, 1030 Vienna, Austria
| | - Rachel E. Mallinger
- Department of Entomology and Nematology, University of Florida, 1881 Natural Area Drive, Gainesville, FL 32601, USA
| | | | - Alejandra Martínez-Salinas
- Agriculture, Livestock and Agroforestry Program, Tropical Agricultural Research and Higher Education Center (CATIE), Cartago, Turrialba 30501, Costa Rica
| | | | - Matthew G. E. Mitchell
- Institute for Resources, Environment and Sustainability, University of British Columbia, Vancouver, BC, Canada
| | - Gonzalo A. R. Molina
- Cátedra de Avicultura, Cunicultura y Apicultura, Facultad de Agronomía, Universidad de Buenos Aires, CABA C1417DSE, Argentina
| | - Maike Nesper
- Department of Environmental Systems Science, ETH Zurich, Universitätstrasse 16, 8092 Zurich, Switzerland
| | - Lovisa Nilsson
- Centre for Environmental and Climate Research, Lund University, S-223 62 Lund, Sweden
| | - Megan E. O'Rourke
- School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA 24061, USA
| | - Marcell K. Peters
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Milan Plećaš
- Faculty of Biology, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia
| | - Simon G. Potts
- Department of Entomology, University of Wisconsin, Madison, WI 53705, USA
| | - Davi de L. Ramos
- Department of Ecology, UnB—Campus Universitário Darcy Ribeiro, Brasília-DF 70910-900, Brazil
| | - Jay A. Rosenheim
- Department of Entomology and Nematology, University of California, Davis, Davis, CA 95616, USA
| | - Maj Rundlöf
- Department of Biology, Lund University, S-223 62 Lund, Sweden
| | - Adrien Rusch
- INRA, UMR 1065 Santé et Agroécologie du Vignoble, ISVV, Université de Bordeaux, Bordeaux Sciences Agro, F-33883 Villenave d’Ornon Cedex, France
| | - Agustín Sáez
- INIBIOMA, Universidad Nacional del Comahue, CONICET, Quintral 1250, 8400 Bariloche, Rio Negro, Argentina
| | - Jeroen Scheper
- Plant Ecology and Nature Conservation Group, Wageningen University, Droevendaalsesteeg 3a, Wageningen 6708 PB, Netherlands
- Wageningen Environmental Research, Wageningen University and Research, P.O. Box 47, 6700 AA Wageningen, Netherlands
| | - Matthias Schleuning
- Senckenberg Biodiversity and Climate Research Centre (SBiK-F), Senckenberganlage 25, 60325 Frankfurt am Main, Germany
| | - Julia M. Schmack
- Centre for Biodiversity and Biosecurity, University of Auckland, Auckland, New Zealand
| | - Amber R. Sciligo
- Department of Environmental Science, Policy, and Management, University of California Berkeley, Berkeley, CA, USA
| | - Colleen Seymour
- South African National Biodiversity Institute, Kirstenbosch Research Centre, Private Bag X7, Claremont 7735, South Africa
| | - Dara A. Stanley
- School of Agriculture and Food Science and Earth Institute, University College Dublin, Belfield, Dublin 4, Ireland
| | - Rebecca Stewart
- Centre for Environmental and Climate Research, Lund University, S-223 62 Lund, Sweden
| | - Jane C. Stout
- School of Natural Sciences, Trinity College Dublin, Dublin 2, Ireland
| | - Louis Sutter
- Agroecology and Environment, Agroscope, Reckenholzstrasse 191, 8046 Zurich, Switzerland
| | - Mayura B. Takada
- Institute for Sustainable Agro-ecosystem Services, School of Agriculture and Life Sciences, The University of Tokyo, 188-0002 Tokyo, Japan
| | - Hisatomo Taki
- Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki 305-8687, Japan
| | - Giovanni Tamburini
- Chair of Nature Conservation and Landscape Ecology, University of Freiburg, Tennenbacher Straße 4, 79106 Freiburg, Germany
| | - Matthias Tschumi
- Agroecology and Environment, Agroscope, Reckenholzstrasse 191, 8046 Zurich, Switzerland
| | - Blandina F. Viana
- Instituto de Biologia, Universidade Federal da Bahia, 40170-210 Salvador, Brazil
| | - Catrin Westphal
- Functional Agrobiodiversity, Department of Crop Sciences, University of Göttingen, Germany
| | - Bryony K. Willcox
- School of Environment and Rural Science, University of New England, Armidale, NSW 2350, Australia
| | - Stephen D. Wratten
- Bio-Protection Research Centre, Lincoln University, Lincoln, New Zealand
| | - Akira Yoshioka
- Fukushima Branch, National Institute for Environmental Studies, 963-770 Fukushima, Japan
| | | | - Wei Zhang
- Environment and Production Technology Division, International Food Policy Research Institute, Washington, DC 20005, USA
| | - Yi Zou
- Department of Health and Environmental Sciences, Xi’an Jiaotong–Liverpool University, 215123, Suzhou, China
| | - Ingolf Steffan-Dewenter
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
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Davis MP, Martin EA, Moorman TB, Isenhart TM, Soupir ML. Nitrous oxide and methane production from denitrifying woodchip bioreactors at three hydraulic residence times. J Environ Manage 2019; 242:290-297. [PMID: 31054393 DOI: 10.1016/j.jenvman.2019.04.055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 04/10/2019] [Accepted: 04/16/2019] [Indexed: 06/09/2023]
Abstract
Denitrifying bioreactors remove nitrate (NO3-) from agricultural drainage and are slated to be an integral part of nitrogen reduction strategies in the Mississippi River Basin. However, incomplete denitrification can result in nitrous oxide (N2O) production and anaerobic conditions within bioreactors may be conducive to methane (CH4) production via methanogenesis. Greenhouse gas production has the potential to trade excess NO3- in surface water with excess greenhouses gases in the atmosphere. Our study examined N2O and CH4 production from pilot scale (6.38 m3) bioreactors across three hydraulic residence times (HRTs), 2, 8, and 16 h. Production was measured from both the surface of the bioreactors and dissolved in the bioreactor effluent. Nitrous oxide and CH4 was produced across all HRTs, with the majority dissolved in the effluent. Nitrous oxide production was significantly greater (P < 0.05) from 2 h HRTs (478.43 mg N2O m-3 day-1) than from 8 (29.95 mg N2O m-3 day-1) and 16 (36.61 mg N2O m-3 day-1) hour HRTs. Methane production was significantly less (P < 0.05) from 2 h HRTs (0.51 g C m3 day-1) compared to 8 (1.50 g C m3 day-1) and 16 (1.69 g C m3 day-1) hour HRTs. The 2 h HRTs had significantly greater (P = 0.05) impacts to climate change compared to 8 and 16 h HRTs. Results from this study suggest managing HRTs between 6 and 8 h in field bioreactors could minimize total greenhouse gas production and maximize NO3- removal.
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Affiliation(s)
- Morgan P Davis
- Dep. of Agronomy, Iowa State Univ., 2104 Agronomy Hall, Ames, IA, 50011, USA.
| | - Emily A Martin
- Dep. of Agricultural and Biosystems Engineering, Iowa State Univ., 1340 Elings Hall, Ames, IA, 50011, USA
| | - Thomas B Moorman
- National Laboratory for Agriculture and the Environment, USDA-ARS, 1015 N. University Blvd., Ames, IA, 50011, USA
| | - Thomas M Isenhart
- Dep. of Natural Resource Ecology and Management, Iowa State Univ., 339 Science Hall II, USA
| | - Michelle L Soupir
- Dep. of Agricultural and Biosystems Engineering, Iowa State Univ., 1340 Elings Hall, Ames, IA, 50011, USA
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19
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Martin EA, Davis MP, Moorman TB, Isenhart TM, Soupir ML. Impact of hydraulic residence time on nitrate removal in pilot-scale woodchip bioreactors. J Environ Manage 2019; 237:424-432. [PMID: 30822646 DOI: 10.1016/j.jenvman.2019.01.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 12/17/2018] [Accepted: 01/08/2019] [Indexed: 06/09/2023]
Abstract
Nitrate (NO3-N) export from row crop agricultural systems with subsurface tile drainage continues to be a major water quality concern. Woodchip bioreactors are an effective edge-of-field practice designed to remove NO3-N from tile drainage. The NO3-N removal rate of woodchip bioreactors can be impacted by several factors, including hydraulic residence time (HRT). This study examined the impact of three HRTs, 2 h, 8 h, and 16 h, on NO3-N removal in a set of nine pilot-scale woodchip bioreactors in Central Iowa. NO3-N concentration reduction from the inlet to the outlet was significantly different for all HRTs (p < 0.05). The 16 h HRT removed the most NO3-N by concentration (7.5 mg L-1) and had the highest removal efficiency at 53.8%. The 8 h HRT removed an average of 5.5 mg L-1 NO3-N with a removal efficiency of 32.1%. The 2 h HRT removed an average of 1.3 mg L-1 NO3-N with a removal efficiency of 9.0%. The 2 h HRT had the highest NO3-N mass removal rate (MRR) at 9.0 g m-3 day-1, followed by the 8 h HRT at 8.5 g m-3 day-1, and the 16 h HRT at 7.4 g m-3 day-1, all of which were statistically different (p < 0.05). Significant explanatory variables for removal efficiency were HRT (p < 0.001) and influent NO3-N concentration (p < 0.001), (R2 = 0.80), with HRT accounting for 93% contribution. When paired with results from a companion study, the ideal HRT for the bioreactors was 8 h to achieve maximum NO3-N removal while reducing the impact from greenhouse gas emissions.
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Affiliation(s)
- E A Martin
- Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, USA.
| | - M P Davis
- Iowa State University, Dept. of Agronomy, 2104 Agronomy Hall, Ames, IA 5001, USA.
| | - T B Moorman
- USDA-ARS National Laboratory for Agriculture and the Environment, 2110 University Boulevard, Ames, IA 50011, USA.
| | - T M Isenhart
- Iowa State University, Dept. of Natural Resource Ecology and Management, 334 Science II, Ames, IA 50011, USA.
| | - M L Soupir
- Iowa State University, Water Quality Research Lab, Dept. of Agricultural and Biosystems Engineering, 3358 Elings Hall, USA.
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20
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Martin EA, Dainese M, Clough Y, Báldi A, Bommarco R, Gagic V, Garratt MPD, Holzschuh A, Kleijn D, Kovács-Hostyánszki A, Marini L, Potts SG, Smith HG, Al Hassan D, Albrecht M, Andersson GKS, Asís JD, Aviron S, Balzan MV, Baños-Picón L, Bartomeus I, Batáry P, Burel F, Caballero-López B, Concepción ED, Coudrain V, Dänhardt J, Diaz M, Diekötter T, Dormann CF, Duflot R, Entling MH, Farwig N, Fischer C, Frank T, Garibaldi LA, Hermann J, Herzog F, Inclán D, Jacot K, Jauker F, Jeanneret P, Kaiser M, Krauss J, Le Féon V, Marshall J, Moonen AC, Moreno G, Riedinger V, Rundlöf M, Rusch A, Scheper J, Schneider G, Schüepp C, Stutz S, Sutter L, Tamburini G, Thies C, Tormos J, Tscharntke T, Tschumi M, Uzman D, Wagner C, Zubair-Anjum M, Steffan-Dewenter I. The interplay of landscape composition and configuration: new pathways to manage functional biodiversity and agroecosystem services across Europe. Ecol Lett 2019; 22:1083-1094. [PMID: 30957401 DOI: 10.1111/ele.13265] [Citation(s) in RCA: 156] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 09/24/2018] [Accepted: 03/08/2019] [Indexed: 01/26/2023]
Abstract
Managing agricultural landscapes to support biodiversity and ecosystem services is a key aim of a sustainable agriculture. However, how the spatial arrangement of crop fields and other habitats in landscapes impacts arthropods and their functions is poorly known. Synthesising data from 49 studies (1515 landscapes) across Europe, we examined effects of landscape composition (% habitats) and configuration (edge density) on arthropods in fields and their margins, pest control, pollination and yields. Configuration effects interacted with the proportions of crop and non-crop habitats, and species' dietary, dispersal and overwintering traits led to contrasting responses to landscape variables. Overall, however, in landscapes with high edge density, 70% of pollinator and 44% of natural enemy species reached highest abundances and pollination and pest control improved 1.7- and 1.4-fold respectively. Arable-dominated landscapes with high edge densities achieved high yields. This suggests that enhancing edge density in European agroecosystems can promote functional biodiversity and yield-enhancing ecosystem services.
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Affiliation(s)
- Emily A Martin
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Matteo Dainese
- Institute for Alpine Environment, Eurac Research, Viale Druso 1, 39100, Bozen/Bolzano, Italy
| | - Yann Clough
- Centre for Environmental and Climate Research, Lund University, 22362, Lund, Sweden
| | - András Báldi
- MTA Centre for Ecological Research, Institute for Ecology and Botany, Lendület Ecosystem Services Research Group, Alkotmány u. 2-4, 2163, Vácrátót, Hungary
| | - Riccardo Bommarco
- Department of Ecology, Swedish University of Agricultural Sciences, SE-750 07, Uppsala, Sweden
| | - Vesna Gagic
- Commonwealth Scientific and Industrial Research Organisation, Dutton Park, Queensland, Australia
| | - Michael P D Garratt
- Centre for Agri-Environmental Research, School of Agriculture, Policy and Development, Reading University, RG6 6AR, UK
| | - Andrea Holzschuh
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - David Kleijn
- Plant Ecology and Nature Conservation Group, Wageningen University, Droevendaalsesteeg 3, 6708PB, Wageningen, The Netherlands
| | - Anikó Kovács-Hostyánszki
- MTA Centre for Ecological Research, Institute for Ecology and Botany, Lendület Ecosystem Services Research Group, Alkotmány u. 2-4, 2163, Vácrátót, Hungary
| | - Lorenzo Marini
- DAFNAE, University of Padova, Viale dell'Università 16, 35020, Legnaro (Padova), Italy
| | - Simon G Potts
- Centre for Agri-Environmental Research, School of Agriculture, Policy and Development, Reading University, RG6 6AR, UK
| | - Henrik G Smith
- Centre for Environmental and Climate Research, Lund University, 22362, Lund, Sweden.,Department of Biology, Lund University, 223 62, Lund, Sweden
| | - Diab Al Hassan
- UMR 6553 Ecobio, CNRS, Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France
| | - Matthias Albrecht
- Agroecology and Environment, Agroscope, Reckenholzstrasse 191, 8046, Zurich, Switzerland
| | - Georg K S Andersson
- Centre for Environmental and Climate Research, Lund University, 22362, Lund, Sweden
| | - Josep D Asís
- Departamento de Biología Animal (Área de Zoología), Facultad de Biología, Universidad de Salamanca, Campus Miguel de Unamuno s/n, 37007, Salamanca, Spain
| | | | - Mario V Balzan
- Institute of Applied Sciences, Malta, College of Arts, Science and Technology (MCAST), Paola, Malta.,Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, I-56127, Pisa, Italy
| | - Laura Baños-Picón
- Departamento de Biología Animal (Área de Zoología), Facultad de Biología, Universidad de Salamanca, Campus Miguel de Unamuno s/n, 37007, Salamanca, Spain
| | - Ignasi Bartomeus
- Estación Biológica de Doñana (EBD-CSIC), E-41092, Sevilla, Spain
| | - Péter Batáry
- MTA ÖK Lendület Landscape and Conservation Ecology Research Group, Alkotmány u. 2-4, 2163, Vácrátót, Hungary
| | - Francoise Burel
- UMR 6553 Ecobio, CNRS, Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France
| | - Berta Caballero-López
- Department of Arthropods, Natural Sciences Museum of Barcelona, Castell dels Tres Dragons, Picasso Av, 08003, Barcelona, Spain
| | - Elena D Concepción
- Department of Biogeography and Global Change, National Museum of Natural Sciences, Spanish National Research Council (BGC-MNCN-CSIC), C/Serrano 115 bis, E-28006, Madrid, Spain
| | - Valérie Coudrain
- Mediterranean Institute of Marine and Terrestrial Biodiversity and Ecology (IMBE), Aix-Marseille University, CNRS, IRD, Univ. Avignon, 13545, Aix-en-Provence, France
| | - Juliana Dänhardt
- Centre for Environmental and Climate Research, Lund University, 22362, Lund, Sweden
| | - Mario Diaz
- Department of Biogeography and Global Change, National Museum of Natural Sciences, Spanish National Research Council (BGC-MNCN-CSIC), C/Serrano 115 bis, E-28006, Madrid, Spain
| | - Tim Diekötter
- Department of Landscape Ecology, Kiel University, Olshausenstrasse 75, 24118, Kiel, Germany
| | - Carsten F Dormann
- Biometry& Environmental System Analysis, University of Freiburg, Freiburg, Germany
| | - Rémi Duflot
- Department of Biological and Environmental Sciences, University of Jyväskylä, Jyväskylä, Finland
| | - Martin H Entling
- Institute for Environmental Sciences, University of Koblenz-Landau, Fortstr. 7, 76829, Landau, Germany
| | - Nina Farwig
- Department of Conservation Ecology, Faculty of Biology, Philipps-University Marburg, Karl-von-Frisch Str. 8, 35043, Marburg, Germany
| | - Christina Fischer
- Restoration Ecology, Department of Ecology and Ecosystem Management, Technische Universität München, 85354, Freising, Germany
| | - Thomas Frank
- University of Natural Resources and Life Sciences, Department of Integrative Biology and Biodiversity Research, Institute of Zoology, Gregor Mendel Straße 33, A-1180, Vienna, Austria
| | - Lucas A Garibaldi
- Instituto de Investigaciones en Recursos Naturales, Agroecología y Desarrollo Rural (IRNAD), Sede Andina, Universidad, Nacional de Río Negro (UNRN) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Mitre 630, CP 8400, San Carlos de Bariloche, Río Negro, Argentina
| | - John Hermann
- Department of Landscape Ecology, Kiel University, Olshausenstrasse 75, 24118, Kiel, Germany
| | - Felix Herzog
- Agroecology and Environment, Agroscope, Reckenholzstrasse 191, 8046, Zurich, Switzerland
| | - Diego Inclán
- Instituto Nacional de Biodiversidad, INABIO - Facultad de Ciencias Agícolas, Universidad Central del Ecuador, Quito, 170129, Ecuador
| | - Katja Jacot
- Agroecology and Environment, Agroscope, Reckenholzstrasse 191, 8046, Zurich, Switzerland
| | - Frank Jauker
- Department of Animal Ecology, Justus Liebig University, Heinrich-Buff-Ring 26-32, D-35392, Giessen, Germany
| | - Philippe Jeanneret
- Agroecology and Environment, Agroscope, Reckenholzstrasse 191, 8046, Zurich, Switzerland
| | - Marina Kaiser
- Faculty of Biology, Institute of Zoology, University of Belgrade, Studentski trg 16, Belgrade, 11 000, Serbia
| | - Jochen Krauss
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Violette Le Féon
- INRA, UR 406 Abeilles et Environnement, Site Agroparc, 84914, Avignon, France
| | | | - Anna-Camilla Moonen
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, I-56127, Pisa, Italy
| | - Gerardo Moreno
- INDEHESA, Forestry School, Universidad de Extremadura, Plasencia, 10600, Spain
| | - Verena Riedinger
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Maj Rundlöf
- Department of Biology, Lund University, 223 62, Lund, Sweden
| | - Adrien Rusch
- INRA, UMR 1065 SAVE, ISVV, Université de Bordeaux, Bordeaux Sciences Agro, F-33883, Villenave d'Ornon, France
| | - Jeroen Scheper
- Animal Ecology Team, Wageningen Environmental Research, Droevendaalsesteeg 3, 6708 PB, Wageningen, The Netherlands
| | - Gudrun Schneider
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Christof Schüepp
- Institute of Ecology and Evolution, University of Bern, CH-3012, Bern, Switzerland
| | - Sonja Stutz
- CABI, Rue des Grillons 1, 2800, Delémont, Switzerland
| | - Louis Sutter
- Agroecology and Environment, Agroscope, Reckenholzstrasse 191, 8046, Zurich, Switzerland
| | - Giovanni Tamburini
- Department of Ecology, Swedish University of Agricultural Sciences, SE-750 07, Uppsala, Sweden
| | - Carsten Thies
- Natural Resources Research Laboratory, Bremer Str. 15, 29308, Winsen, Germany
| | - José Tormos
- Departamento de Biología Animal (Área de Zoología), Facultad de Biología, Universidad de Salamanca, Campus Miguel de Unamuno s/n, 37007, Salamanca, Spain
| | - Teja Tscharntke
- Agroecology, University of Göttingen, Grisebachstrasse 6, 37077, Göttingen, Germany
| | - Matthias Tschumi
- Agroecology and Environment, Agroscope, Reckenholzstrasse 191, 8046, Zurich, Switzerland
| | - Deniz Uzman
- Department of Crop Protection, Geisenheim University, Von-Lade-Str. 1, 65366, Geisenheim, Germany
| | - Christian Wagner
- LfL, Bayerische Landesanstalt für Landwirtschaft, Institut für Ökologischen Landbau, Bodenkultur und Ressourcenschutz, Lange Point 12, 85354, Freising, Germany
| | - Muhammad Zubair-Anjum
- Department of Zoology & Biology, Faculty of Sciences, Pir Mehr Ali Shah Arid Agriculture University Rawalpindi, Rawalpindi, Pakistan
| | - Ingolf Steffan-Dewenter
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
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21
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Larsen AE, Patton M, Martin EA. High highs and low lows: Elucidating striking seasonal variability in pesticide use and its environmental implications. Sci Total Environ 2019; 651:828-837. [PMID: 30253365 DOI: 10.1016/j.scitotenv.2018.09.206] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 09/11/2018] [Accepted: 09/16/2018] [Indexed: 06/08/2023]
Abstract
Despite substantial public and scientific concern regarding unintended environmental and health consequences of agricultural pesticide use, identifying when and where high levels of use occur is stymied by a dearth of data at biologically relevant spatial or temporal scales. Here we investigate intra-annual patterns in pesticide use by crop and by pesticide type using unique pesticide use data from agriculturally diverse croplands of California, USA. We find that timing and type of pesticide use is strongly crop-dependent, and that for many high pesticide use crops, monthly application rates are highly consistent from year-to-year. Further, while pesticide use hotspots are concentrated in early summer, regions with very high use occur throughout the year with spatial distributions varying therein. The enormity of intra-annual variation in pesticide use, as well as the consistency in those patterns through time, suggests opportunities for crop-specific pest management and region-specific mitigation approaches to limit environmental and human health hazards from agricultural pesticide use.
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Affiliation(s)
- Ashley E Larsen
- Bren School of Environmental Science & Management, University of California, Santa Barbara, United States of America.
| | - Michael Patton
- Bren School of Environmental Science & Management, University of California, Santa Barbara, United States of America
| | - Emily A Martin
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
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22
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Redlich S, Martin EA, Wende B, Steffan-Dewenter I. Landscape heterogeneity rather than crop diversity mediates bird diversity in agricultural landscapes. PLoS One 2018; 13:e0200438. [PMID: 30067851 PMCID: PMC6070203 DOI: 10.1371/journal.pone.0200438] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 06/26/2018] [Indexed: 01/10/2023] Open
Abstract
Crop diversification has been proposed as farm management tool that could mitigate the externalities of conventional farming while reducing productivity-biodiversity trade-offs. Yet evidence for the acclaimed biodiversity benefits of landscape-level crop diversity is ambiguous. Effects may strongly depend on spatial scale and the level of landscape heterogeneity (e.g. overall habitat diversity). At the same time, contrasting within-taxon responses obscure benefits to specific functional groups (i.e. species with shared characteristics or requirements) if studied at the community level. The objectives of this study were to 1) disentangle the relative effects of crop diversity and landscape heterogeneity on avian species richness across five spatial scales ranging from 250 to 3000 m radii around focal winter wheat fields; and 2) assess whether functional groups (feeding guild, conservation status, habitat preference, nesting behaviour) determine the strength and direction of responses to crop diversity and landscape heterogeneity. In central Germany, 14 landscapes were selected along independent gradients of crop diversity (annual arable crops) and landscape heterogeneity. Bird species richness in each landscape was estimated using four point counts throughout the breeding season. We found no effects of landscape-level crop diversity on bird richness and functional groups. Instead, landscape heterogeneity was strongly associated with increased total bird richness across all spatial scales. In particular, insect-feeding and non-farmland birds were favoured in heterogeneous landscapes, as were species not classified as endangered or vulnerable on the regional Red List. Crop-nesting farmland birds, however, were less species-rich in these landscapes. Accordingly, crop diversification may be less suitable for conserving avian diversity and associated ecosystem services (e.g. biological pest control), although confounding interactions with management intensity need yet to be confirmed. In contrast, enhancement of landscape heterogeneity by increasing perennial habitat diversity, reducing field sizes and the amount of cropland has the potential to benefit overall bird richness. Specialist farmland birds, however, may require more targeted management approaches.
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Affiliation(s)
- Sarah Redlich
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Würzburg, Germany
- * E-mail:
| | - Emily A. Martin
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Würzburg, Germany
| | - Beate Wende
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Würzburg, Germany
| | - Ingolf Steffan-Dewenter
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Würzburg, Germany
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23
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Affiliation(s)
- Sarah Redlich
- Department of Animal Ecology and Tropical Biology; Biocenter University of Würzburg; Würzburg Germany
| | - Emily A. Martin
- Department of Animal Ecology and Tropical Biology; Biocenter University of Würzburg; Würzburg Germany
| | - Ingolf Steffan-Dewenter
- Department of Animal Ecology and Tropical Biology; Biocenter University of Würzburg; Würzburg Germany
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24
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Lichtenberg EM, Kennedy CM, Kremen C, Batáry P, Berendse F, Bommarco R, Bosque-Pérez NA, Carvalheiro LG, Snyder WE, Williams NM, Winfree R, Klatt BK, Åström S, Benjamin F, Brittain C, Chaplin-Kramer R, Clough Y, Danforth B, Diekötter T, Eigenbrode SD, Ekroos J, Elle E, Freitas BM, Fukuda Y, Gaines-Day HR, Grab H, Gratton C, Holzschuh A, Isaacs R, Isaia M, Jha S, Jonason D, Jones VP, Klein AM, Krauss J, Letourneau DK, Macfadyen S, Mallinger RE, Martin EA, Martinez E, Memmott J, Morandin L, Neame L, Otieno M, Park MG, Pfiffner L, Pocock MJO, Ponce C, Potts SG, Poveda K, Ramos M, Rosenheim JA, Rundlöf M, Sardiñas H, Saunders ME, Schon NL, Sciligo AR, Sidhu CS, Steffan-Dewenter I, Tscharntke T, Veselý M, Weisser WW, Wilson JK, Crowder DW. A global synthesis of the effects of diversified farming systems on arthropod diversity within fields and across agricultural landscapes. Glob Chang Biol 2017; 23:4946-4957. [PMID: 28488295 DOI: 10.1111/gcb.13714] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Accepted: 03/17/2017] [Indexed: 05/25/2023]
Abstract
Agricultural intensification is a leading cause of global biodiversity loss, which can reduce the provisioning of ecosystem services in managed ecosystems. Organic farming and plant diversification are farm management schemes that may mitigate potential ecological harm by increasing species richness and boosting related ecosystem services to agroecosystems. What remains unclear is the extent to which farm management schemes affect biodiversity components other than species richness, and whether impacts differ across spatial scales and landscape contexts. Using a global metadataset, we quantified the effects of organic farming and plant diversification on abundance, local diversity (communities within fields), and regional diversity (communities across fields) of arthropod pollinators, predators, herbivores, and detritivores. Both organic farming and higher in-field plant diversity enhanced arthropod abundance, particularly for rare taxa. This resulted in increased richness but decreased evenness. While these responses were stronger at local relative to regional scales, richness and abundance increased at both scales, and richness on farms embedded in complex relative to simple landscapes. Overall, both organic farming and in-field plant diversification exerted the strongest effects on pollinators and predators, suggesting these management schemes can facilitate ecosystem service providers without augmenting herbivore (pest) populations. Our results suggest that organic farming and plant diversification promote diverse arthropod metacommunities that may provide temporal and spatial stability of ecosystem service provisioning. Conserving diverse plant and arthropod communities in farming systems therefore requires sustainable practices that operate both within fields and across landscapes.
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Affiliation(s)
- Elinor M Lichtenberg
- Department of Entomology, Washington State University, Pullman, WA, USA
- Department of Ecology & Evolutionary Biology, The University of Arizona, Tucson, AZ, USA
| | | | - Claire Kremen
- Department of Environmental Sciences, Policy and Management, University of California, Berkeley, CA, USA
| | - Péter Batáry
- Agroecology, University of Goettingen, Göttingen, Germany
| | - Frank Berendse
- Nature Conservation and Plant Ecology Group, Wageningen University, Wageningen, the Netherlands
| | - Riccardo Bommarco
- Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Nilsa A Bosque-Pérez
- Department of Entomology, Plant Pathology and Nematology, University of Idaho, Moscow, ID, USA
| | - Luísa G Carvalheiro
- Departamento de Ecologia, Universidade de Brasília, Brasília, Brazil
- Center for Ecology, Evolution and Environmental Changes (CE3C), Faculdade de Ciencias, Universidade de Lisboa, Lisboa, Portugal
| | - William E Snyder
- Department of Entomology, Washington State University, Pullman, WA, USA
| | - Neal M Williams
- Department of Entomology and Nematology, University of California, Davis, CA, USA
| | - Rachael Winfree
- Department of Ecology, Evolution and Natural Resources, Rutgers University, New Brunswick, NJ, USA
| | - Björn K Klatt
- Agroecology, University of Goettingen, Göttingen, Germany
- Centre for Environmental and Climate Research, Lund University, Lund, Sweden
- Department of Biology, Lund University, Lund, Sweden
| | - Sandra Åström
- Norwegian Institute for Nature Research (NINA), Trondheim, Norway
| | - Faye Benjamin
- Department of Ecology, Evolution and Natural Resources, Rutgers University, New Brunswick, NJ, USA
| | - Claire Brittain
- Department of Entomology and Nematology, University of California, Davis, CA, USA
| | | | - Yann Clough
- Centre for Environmental and Climate Research, Lund University, Lund, Sweden
| | - Bryan Danforth
- Department of Entomology, Cornell University, Ithaca, NY, USA
| | - Tim Diekötter
- Department of Landscape Ecology, Kiel University, Kiel, Germany
| | - Sanford D Eigenbrode
- Department of Entomology, Plant Pathology and Nematology, University of Idaho, Moscow, ID, USA
| | - Johan Ekroos
- Centre for Environmental and Climate Research, Lund University, Lund, Sweden
| | - Elizabeth Elle
- Department of Biological Sciences, Simon Fraser University, Burnaby, BC, Canada
| | - Breno M Freitas
- Departamento de Zootecnia, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | - Yuki Fukuda
- Centres for the Study of Agriculture Food and Environment, University of Otago, Dunedin, New Zealand
| | | | - Heather Grab
- Department of Entomology, Cornell University, Ithaca, NY, USA
| | - Claudio Gratton
- Department of Entomology, University of Wisconsin-Madison, Madison, WI, USA
| | - Andrea Holzschuh
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Würzburg, Germany
| | - Rufus Isaacs
- Department of Entomology, Michigan State University, East Lansing, MI, USA
| | - Marco Isaia
- Department of Life Sciences and Systems Biology, University of Torino, Torino, Italy
| | - Shalene Jha
- Department of Integrative Biology, University of Texas at Austin, Austin, TX, USA
| | - Dennis Jonason
- Department of Physical Geography, Stockholm University, Stockholm, Sweden
| | - Vincent P Jones
- Department of Entomology, Tree Fruit Research and Extension Center, Washington State University, Wenatchee, WA, USA
| | - Alexandra-Maria Klein
- Nature Conservation and Landscape Ecology, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg, Germany
| | - Jochen Krauss
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Würzburg, Germany
| | - Deborah K Letourneau
- Department of Environmental Studies, University of California, Santa Cruz, CA, USA
| | | | - Rachel E Mallinger
- Department of Entomology, University of Wisconsin-Madison, Madison, WI, USA
| | - Emily A Martin
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Würzburg, Germany
| | | | - Jane Memmott
- School of Biological Sciences, University of Bristol, Bristol, UK
| | | | - Lisa Neame
- Alberta Environment and Parks, Regional Planning Branch, Edmonton, AB, Canada
| | - Mark Otieno
- Department of Agricultural Resource Management, Embu University College, Embu, Kenya
| | - Mia G Park
- Department of Entomology, Cornell University, Ithaca, NY, USA
- Department of Humanities & Integrated Studies, University of North Dakota, Grand Forks, ND, USA
| | - Lukas Pfiffner
- Department of Crop Science, Research Institute of Organic Agriculture, Frick, Switzerland
| | | | - Carlos Ponce
- Department of Evolutionary Ecology, Museo Nacional de Ciencias Naturales, CSIC, Madrid, Spain
| | - Simon G Potts
- Centre for Agri-Environmental Research, School of Agriculture, Policy and Development, University of Reading, Reading, UK
| | - Katja Poveda
- Department of Entomology, Cornell University, Ithaca, NY, USA
| | - Mariangie Ramos
- Department of Agricultural Technology, University of Puerto Rico at Utuado, Utuado, PR, USA
| | - Jay A Rosenheim
- Department of Entomology and Nematology, University of California, Davis, CA, USA
| | - Maj Rundlöf
- Department of Biology, Lund University, Lund, Sweden
| | - Hillary Sardiñas
- Department of Environmental Sciences, Policy and Management, University of California, Berkeley, CA, USA
| | - Manu E Saunders
- Institute for Land Water & Society, Charles Sturt University, Albury, NSW, Australia
| | - Nicole L Schon
- AgResearch, Lincoln Research Centre, Christchurch, New Zealand
| | - Amber R Sciligo
- Department of Environmental Sciences, Policy and Management, University of California, Berkeley, CA, USA
| | - C Sheena Sidhu
- University of California Cooperative Extension, San Mateo & San Francisco Counties, Half Moon Bay, CA, USA
| | - Ingolf Steffan-Dewenter
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Würzburg, Germany
| | | | - Milan Veselý
- Department of Zoology, Faculty of Science, Palacký University, Olomouc, Czech Republic
| | - Wolfgang W Weisser
- Terrestrial Ecology Research Group, Department for Ecology and Ecosystem Management, School of Life Sciences Weihenstephan, Technical University of Munich, Freising, Germany
| | - Julianna K Wilson
- Department of Entomology, Michigan State University, East Lansing, MI, USA
| | - David W Crowder
- Department of Entomology, Washington State University, Pullman, WA, USA
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25
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Martin EA, Seo B, Park CR, Reineking B, Steffan-Dewenter I. Scale-dependent effects of landscape composition and configuration on natural enemy diversity, crop herbivory, and yields. Ecol Appl 2016; 26:448-462. [PMID: 27209787 DOI: 10.1890/15-0856] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
(1) Land-use intensification in agricultural landscapes has led to changes in the way habitats and resources are distributed in space. Pests and their natural enemies are influenced by these changes, and by the farming intensity of crop fields. However, it is unknown whether the composition of landscapes (amount and diversity of land cover types) or their configuration (spatial arrangement of cover types) are more important for natural enemy diversity, and how they impact crop damage and yields. In addition, effects of interactions between local farming practices (organic vs. conventional) and landscape variables are unclear. (2) Here, we make use of a data set where landscape composition and configuration were uncorrelated across multiple spatial scales. Natural enemies, crop damage, and yields were sampled in 35 organic and conventional crop fields. Out of seven broad natural enemy taxa, five were positively affected by a complex landscape configuration. In contrast, only carabids were positively affected by the amount of seminatural habitat around fields. Increasing diversity of land cover types had positive effects on some, but negative effects on other taxa. Effect sizes varied among taxa but increased with increasing spatial scale, defined by circular areas of increasing radius around fields. (3) The diversity of aerial, but not of ground-dwelling enemies was higher in fields under organic than conventional management. Interactions of local and landscape variables were important for birds, but not other enemies. Bird richness was higher in organic fields in simple landscapes, but not in landscapes with complex configuration or high land cover diversity. (4) Crop damage decreased with landscape diversity, but increased in conventional fields with complex configuration. Yields increased with both parameters in conventional fields only, and were higher on average in organic compared to conventional fields. Enemy diversity was positively related to crop damage, indicating positive density-dependence of enemies on pests. However, the diversity of aerial enemies was also positively related to yields. (5) Our results suggest that the effectiveness of agrienvironmental schemes for managing natural enemy diversity, crop damage and yields could be enhanced by optimizing the effects of distinct landscape parameters, particularly landscape configuration and diversity, across scales.
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26
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Martin EA, Reineking B, Seo B, Steffan-Dewenter I. Pest control of aphids depends on landscape complexity and natural enemy interactions. PeerJ 2015; 3:e1095. [PMID: 26734497 PMCID: PMC4699780 DOI: 10.7717/peerj.1095] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 06/18/2015] [Indexed: 12/04/2022] Open
Abstract
Aphids are a major concern in agricultural crops worldwide, and control by natural enemies is an essential component of the ecological intensification of agriculture. Although the complexity of agricultural landscapes is known to influence natural enemies of pests, few studies have measured the degree of pest control by different enemy guilds across gradients in landscape complexity. Here, we use multiple natural-enemy exclosures replicated in 18 fields across a gradient in landscape complexity to investigate (1) the strength of natural pest control across landscapes, measured as the difference between pest pressure in the presence and in the absence of natural enemies; (2) the differential contributions of natural enemy guilds to pest control, and the nature of their interactions across landscapes. We show that natural pest control of aphids increased up to six-fold from simple to complex landscapes. In the absence of pest control, aphid population growth was higher in complex than simple landscapes, but was reduced by natural enemies to similar growth rates across all landscapes. The effects of enemy guilds were landscape-dependent. Particularly in complex landscapes, total pest control was supplied by the combined contribution of flying insects and ground-dwellers. Birds had little overall impact on aphid control. Despite evidence for intraguild predation of flying insects by ground-dwellers and birds, the overall effect of enemy guilds on aphid control was complementary. Understanding pest control services at large spatial scales is critical to increase the success of ecological intensification schemes. Our results suggest that, where aphids are the main pest of concern, interactions between natural enemies are largely complementary and lead to a strongly positive effect of landscape complexity on pest control. Increasing the availability of seminatural habitats in agricultural landscapes may thus benefit not only natural enemies, but also the effectiveness of aphid natural pest control.
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Affiliation(s)
- Emily A Martin
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg , Am Hubland, Würzburg , Germany
| | - Björn Reineking
- Irstea, UR EMGR, St-Martin-d'Hères, France; Université Grenoble Alpes, Grenoble, France; Biogeographical Modelling, Bayreuth Center of Ecology and Environmental Research BayCEER, University of Bayreuth, Bayreuth, Germany
| | - Bumsuk Seo
- Biogeographical Modelling, Bayreuth Center of Ecology and Environmental Research BayCEER, University of Bayreuth, Bayreuth, Germany; Department of Plant Ecology, University of Bayreuth, Bayreuth, Germany
| | - Ingolf Steffan-Dewenter
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg , Am Hubland, Würzburg , Germany
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27
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Kang W, Hoffmeister M, Martin EA, Steffan-Dewenter I, Han D, Lee D. Effects of management and structural connectivity on the plant communities of organic vegetable field margins in South Korea. Ecol Res 2013. [DOI: 10.1007/s11284-013-1081-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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28
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Knudsen LE, Gaskell M, Martin EA, Poole J, Scheepers PTJ, Jensen A, Autrup H, Farmer PB. Genotoxic damage in mine workers exposed to diesel exhaust, and the effects of glutathione transferase genotypes. Mutat Res 2005; 583:120-32. [PMID: 15876548 DOI: 10.1016/j.mrgentox.2005.03.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2003] [Revised: 01/28/2005] [Accepted: 03/14/2005] [Indexed: 11/20/2022]
Abstract
This study was performed in an Estonian shale-oil mine with the purpose to develop and apply a number of biomarkers for occupational diesel-exhaust exposure monitoring. Increased breathing-zone exposures to exhaust from operators of diesel-powered trucks in the mine was confirmed in the environmental monitoring part of the study, showing a 7.5-fold higher exposure to particle-associated 1-nitropyrene (1-NP) in 50 underground workers compared with 42 surface workers [P.T.J. Scheepers, D. Coggon, L.E. Knudsen, R. Anzion, H. Autrup, S. Bogovski, R.P. Bos, D. Dahmann, P. Farmer, E.A. Martin, V. Micka, V. Muzyka, H.-G. Neumann, J. Poole, A. Schmidt-Ott, F. Seiler, J. Volf, I. Zwirner-Baier, Biomarkers for occupational diesel exhaust exposure monitoring (BIOMODEM)-a study in underground mining, Toxicol. Lett. 134 (2002) 305-317; P.T.J. Scheepers, V. Micka, V. Muzyka, R. Anzion, D. Dahmann, J. Poole, R.P. Bos, Exposure to dust and particle-associated 1-nitropyrene of drivers of diesel-powered equipment in underground mining, Ann. Occp. Hyg. 47 (2003) 379-388]. Analysis of DNA damage by the Comet assay on frozen blood samples was performed on the total study group and showed significantly higher levels (p=0.003) in underground workers (smokers) driving diesel-powered excavation machines (median 155 on a scale from 0 to 400, among 47 persons), compared with surface workers who smoked (median of 90, among 46 persons). The level of DNA damage in underground smokers was significantly higher (p=0.04) than in non-smokers. Samples from 2 of the 3 sampling weeks had significantly lower DNA damage compared with the third week, probably due to timely processing and freezing. These samples also showed significant differences (p<0.001) between underground workers (median 145, among 41 persons) and surface workers (median 60, among 30 persons). An HPLC method was developed for the analysis of (32)P-postlabelled 1-NP-DNA-adducts, and was applied to a sub-sample of 20 workers. No significant differences between surface and underground workers were found in this sub-sample with respect to the minor, unidentified adducts that had similar chromatographic properties to 1-NP adducts, and smoking did not have any effect on adduct levels. No significant effects of the genotypes of GSTM1, GSTP1 and GSTT1 on DNA-adducts and on DNA damage as measured by the Comet assay were found in the total study group. The study confirms an increased level of DNA damage in workers exposed to exhaust from truck-driving in the mine. However, the results of the environmental and biological monitoring of 1-NP did not correlate, suggesting that inhalation exposure to diesel exhaust is not reflected by an increase in 1-NP-DNA-adduct levels and/or that factors other than occupational exposure to diesel exhaust are primary determinants of these DNA-adduct levels.
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Affiliation(s)
- L E Knudsen
- Institute of Public Health, University of Copenhagen, Department of Environmental Health, Panum DK-2200, Denmark.
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Charkoudian N, Martin EA, Dinenno FA, Eisenach JH, Dietz NM, Joyner MJ. Influence of increased central venous pressure on baroreflex control of sympathetic activity in humans. Am J Physiol Heart Circ Physiol 2004; 287:H1658-62. [PMID: 15191897 DOI: 10.1152/ajpheart.00265.2004] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Volume expansion often ameliorates symptoms of orthostatic intolerance; however, the influence of this increased volume on integrated baroreflex control of vascular sympathetic activity is unknown. We tested whether acute increases in central venous pressure (CVP) diminished subsequent responsiveness of muscle sympathetic nerve activity (MSNA) to rapid changes in arterial pressure. We studied healthy humans under three separate conditions: control, acute 10 degrees head-down tilt (HDT), and saline infusion (SAL). In each condition, heart rate, arterial pressure, CVP, and peroneal MSNA were measured during 5 min of rest and then during rapid changes in arterial pressure induced by sequential boluses of nitroprusside and phenylephrine (modified Oxford technique). Sensitivities of integrated baroreflex control of MSNA and heart rate were assessed as the slopes of the linear portions of the MSNA-diastolic blood pressure and R-R interval-systolic pressure relations, respectively. CVP increased approximately 2 mmHg in both SAL and HDT conditions. Resting heart rate and mean arterial pressure were not different among trials. Sensitivity of baroreflex control of MSNA was decreased in both SAL and HDT condition, respectively: -3.1 +/- 0.6 and -3.3 +/- 1.0 versus -5.0 +/- 0.6 units.beat(-1).mmHg(-1) (P < 0.05 for SAL and HDT vs. control). Sensitivity of baroreflex control of the heart was not different among conditions. Our results indicate that small increases in CVP decrease the sensitivity of integrated baroreflex control of sympathetic nerve activity in healthy humans.
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Affiliation(s)
- N Charkoudian
- Dept. of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905, USA.
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Abstract
Although the rat is the most common animal model used in studying osteoporosis, it is often used inappropriately. Osteoporosis is a disease that most commonly occurs in humans long after growth plate fusion with the associated cessation of longitudinal bone growth, but there has been a question as to when or to what extent the rat growth plate fuses. To investigate this question, we used microcomputed X-ray tomography, at voxel resolutions ranging from (5.7 micro m)(3) to (11 micro m)(3), to image the proximal epiphyseal growth plates of both male (n = 19) and female (n = 15) rat tibiae, ranging in age from 2 to 25 months. The three-dimensional images were used to evaluate fusion of the epiphyseal growth plate by quantitating the amount of cancellous bone that has bridged across the growth plate. The results suggest that the time course of fusion of the epiphyseal growth plate follows a sigmoidal pattern, with 10% of the maximum number of bridges having formed by 3.9 months in the male tibiae and 5.8 months in the female tibiae, 50% of the maximum number of bridges having formed by 5.6 months in the male tibiae and 5.9 months in the female tibiae, and 90% of the total maximum of bridges have formed by 7.4 months for the males and 6.5 months for the females. The total volume of bridges per tibia at the age at which the maximum number of bridges per tibia has first formed is 0.99 mm(3)/tibia for the males and 0.40 mm(3)/tibia for the females. After the maximum number of bridges (-290 for females, -360 for males) have formed the total volume of bridges per tibia continues to increase for an additional 7.0 months in the males and 17.0 months for the females until they reach maximum values (-1.5 mm(3)/tibia for the males and -2.2 mm(3)/tibia for the females).
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Affiliation(s)
- E A Martin
- Mayo Graduate School, Mayo Clinic, Rochester, MN 55905, USA
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Leong CO, Gaskell M, Martin EA, Heydon RT, Farmer PB, Bibby MC, Cooper PA, Double JA, Bradshaw TD, Stevens MFG. Antitumour 2-(4-aminophenyl)benzothiazoles generate DNA adducts in sensitive tumour cells in vitro and in vivo. Br J Cancer 2003; 88:470-7. [PMID: 12569393 PMCID: PMC2747538 DOI: 10.1038/sj.bjc.6600719] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
2-(4-Aminophenyl)benzothiazoles represent a potent and highly selective class of antitumour agent. In vitro, sensitive carcinoma cells deplete 2-(4-aminophenyl)benzothiazoles from nutrient media; cytochrome P450 1A1 activity, critical for execution of antitumour activity, and protein expression are powerfully induced. 2-(4-Amino-3-methylphenyl)benzothiazole-derived covalent binding to cytochrome P450 1A1 is reduced by glutathione, suggesting 1A1-dependent production of a reactive electrophilic species. In vitro, 2-(4-aminophenyl)benzothiazole-generated DNA adducts form in sensitive tumour cells only. At concentrations >100 nM, adducts were detected in DNA of MCF-7 cells treated with 2-(4-amino-3-methylphenyl)-5-fluorobenzothiazole (5F 203). 5F 203 (1 microM) led to the formation of one major and a number of minor adducts. However, treatment of cells with 10 microM 5F 203 resulted in the emergence of a new dominant adduct. Adducts accumulated steadily within DNA of MCF-7 cells exposed to 1 microM 5F 203 between 2 and 24 h. Concentrations of the lysylamide prodrug of 5F 203 (Phortress) > or = 100 nM generated adducts in the DNA of sensitive MCF-7 and IGROV-1 ovarian cells. At 1 microM, one major Phortress-derived DNA adduct was detected in these two sensitive phenotypes; 10 microM Phortress led to the emergence of an additional major adduct detected in the DNA of MCF-7 cells. Inherently resistant MDA-MB-435 breast carcinoma cells incurred no DNA damage upon exposure to Phortress (< or = 10 microM, 24 h). In vivo, DNA adducts accumulated within sensitive ovarian IGROV-1 and breast MCF-7 xenografts 24 h after treatment of mice with Phortress (20 mg kg(-1)). Moreover, Phortress-derived DNA adduct generation distinguished sensitive MCF-7 tumours from inherently resistant MDA-MB-435 xenografts implanted in opposite flanks of the same mouse.
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Affiliation(s)
- C-O Leong
- School of Pharmaceutical Sciences, University of Nottingham, Nottingham NG7 2RD, UK
| | - M Gaskell
- Biocentre, University of Leicester, Leicester LE1 7RH, UK
| | - E A Martin
- Biocentre, University of Leicester, Leicester LE1 7RH, UK
| | - R T Heydon
- Biocentre, University of Leicester, Leicester LE1 7RH, UK
| | - P B Farmer
- Biocentre, University of Leicester, Leicester LE1 7RH, UK
| | - M C Bibby
- Cancer Research Unit, School of Life Sciences, University of Bradford, Bradford BD7 1DP, UK
| | - P A Cooper
- Cancer Research Unit, School of Life Sciences, University of Bradford, Bradford BD7 1DP, UK
| | - J A Double
- Cancer Research Unit, School of Life Sciences, University of Bradford, Bradford BD7 1DP, UK
| | - T D Bradshaw
- School of Pharmaceutical Sciences, University of Nottingham, Nottingham NG7 2RD, UK
- School of Pharmaceutical Sciences, University of Nottingham, Nottingham NG7 2RD, UK. E-mail:
| | - M F G Stevens
- School of Pharmaceutical Sciences, University of Nottingham, Nottingham NG7 2RD, UK
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Scheepers PTJ, Coggon D, Knudsen LE, Anzion R, Autrup H, Bogovski S, Bos RP, Dahmann D, Farmer P, Martin EA, Micka V, Muzyka V, Neumann HG, Poole J, Schmidt-Ott A, Seiler F, Volf J, Zwirner-Baier I. BIOMarkers for occupational diesel exhaust exposure monitoring (BIOMODEM)--a study in underground mining. Toxicol Lett 2002; 134:305-17. [PMID: 12191893 DOI: 10.1016/s0378-4274(02)00195-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Methods for the assessment of exposures to diesel exhaust were evaluated, including various biomarkers of internal exposure and early biological effects. The impact of possible biomarkers of susceptibility was also explored. Underground workers (drivers of diesel-powered excavators) at an oil shale mine in Estonia were compared with surface workers. Personal exposures to particle-associated 1-nitropyrene (NP) were some eight times higher underground than on the surface. Underground miners were also occupationally exposed to benzene and polycyclic aromatic hydrocarbons, as indicated by excretion of urinary metabolites of benzene and pyrene. In addition, increased O(6)-alkylguanine DNA adducts were detected in the white blood cells of underground workers, suggesting higher exposure to nitroso-compounds. However, no differences between underground and surface workers were observed in the levels of other bulky DNA adducts determined by 32P-postlabelling, or in DNA damage. The study indicated that smoking, diet and residential indoor air pollution are important non-occupational factors to consider when interpreting biomonitoring results.
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Affiliation(s)
- P T J Scheepers
- Department of Epidemiology and Biostatistics, University Medical Centre St Radboud, PO Box 9101, NL 6500 HB Nijmegen, The Netherlands.
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Martin EA. Young investigator award. Tamoxifen--risks and opportunities. Toxicology 2001; 168:20-7. [PMID: 11713735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Affiliation(s)
- E A Martin
- MRC Toxicology Unit, University of Leicester, UK
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Khurana D, Martin EA, Kasperbauer JL, O'Malley BW, Salomao DR, Chen L, Strome SE. Characterization of a spontaneously arising murine squamous cell carcinoma (SCC VII) as a prerequisite for head and neck cancer immunotherapy. Head Neck 2001; 23:899-906. [PMID: 11592238 DOI: 10.1002/hed.1130] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND To develop novel therapeutic approaches for patients with head and neck malignancies, poorly immunogenic murine models of squamous cell carcinoma (SCC) need to be defined. METHODS The phenotype, growth characteristics, and responsiveness to tumor-specific T-cell transfer of a spontaneously arising murine SCC (SCC VII) were characterized. RESULTS SCC VII expresses major histocompatibility complex (MHC) class I molecules yet is resistant to tumor-specific T-cell killing and relatively insensitive to killing mediated by lymphokine-activated killer (LAK) cells. Intradermal tumors are reproducibly established after vaccination of 5 x 10(4) cells, and systemic micrometastases are apparent after intravenous administration of 2.5 x 10(4) cells. Immunotherapy of 3-day lung metastases using tumor-specific T cells and systemic interleukin-2 (IL-2) was ineffective in reducing the number of metastases in vivo. CONCLUSIONS SCC VII is a poorly immunogenic murine squamous cell cancer, which represents an ideal model for preclinical testing of immunotherapeutic approaches for patients with SCC of the upper aerodigestive tract.
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Affiliation(s)
- D Khurana
- Department of Otolaryngology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, USA
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Nelson AE, Mason RS, Robinson BG, Hogan JJ, Martin EA, Ahlström H, Aström G, Larsson T, Jonsson K, Wibell L, Ljunggren O. Diagnosis of a patient with oncogenic osteomalacia using a phosphate uptake bioassay of serum and magnetic resonance imaging. Eur J Endocrinol 2001; 145:469-76. [PMID: 11581007 DOI: 10.1530/eje.0.1450469] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A previously healthy man with no family history of fractures presented with muscle pain, back pain and height loss. Investigations revealed hypophosphataemia, phosphaturia, undetectable serum 1,25-dihydroxyvitamin D and severe osteomalacia on bone biopsy, suggestive of a diagnosis of oncogenic osteomalacia. Thorough physical examination did not locate a tumour. Support for the diagnosis was obtained by detection of phosphate uptake inhibitory activity in a blinded sample of the patient's serum using a renal cell bioassay. On the basis of detection of this bioactivity, a total body magnetic resonance (MR) examination was performed. A small tumour was located in the right leg. Removal of the tumour resulted in the rapid reversal of symptoms and the abnormal biochemistry typical of oncogenic osteomalacia. Inhibitory activity was also demonstrated using the bioassay in serum from two other patients with confirmed or presumptive oncogenic osteomalacia, but not in serum from two patients with hypophosphataemia of other origin. This is the first case to be reported in which the diagnosis of oncogenic osteomalacia was assisted by demonstration of inhibitory activity of the patient's serum in a renal cell phosphate bioassay that provided an impetus for total body MR imaging.
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Affiliation(s)
- A E Nelson
- Cancer Genetics Department, Kolling Institute of Medical Research, Royal North Shore Hospital, Sydney 2065, Australia.
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Abstract
Tamoxifen is a potent rat liver carcinogen, currently being used as a long-term chemopreventative for breast cancer in healthy women. The mechanism by which tamoxifen causes liver cancer in rats is known to be associated with the accumulation of tamoxifen DNA adducts in this organ. We have examined the dose-response relationship of tamoxifen-induced DNA adducts in the liver and the subsequent increase in the development of liver cancer, with and without phenobarbital promotion. Female Wistar (Han) rats were fed 420 ppm tamoxifen in the diet for 0, 1, 4, 8 or 12 weeks after which time rats were either examined immediately for hepatic tamoxifen-induced DNA damage using the 32P-Postlabelling assay, or left for lifetime for tumour assessment. A proportion of rats left for lifetime study were given phenobarbital in their drinking water. There was a clear dose-response relationship with respect to duration of tamoxifen exposure for both accumulation of DNA adducts and lifetime risk of liver cancer. In the absence of phenobarbital promotion there was a threshold value for tamoxifen-induced DNA adducts (180 adducts/10(8) nucleotides) and the subsequent induction of liver cancer. This study demonstrates the relationship between the accumulation of hepatic tamoxifen-induced DNA adducts and the development of liver cancer and establishes the threshold for hepatocarcinogenesis in terms of DNA adduct formation. These data could provide useful information in interpreting the relevance of low levels of DNA adducts in humans.
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Affiliation(s)
- P Carthew
- SEAC Toxicology Unit, Unilever Research, Sharnbrook, Bedfordshire, UK.
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37
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Routledge MN, McLuckie KI, Jones GD, Farmer PB, Martin EA. Presence of benzo[a]pyrene diol epoxide adducts in target DNA leads to an increase in UV-induced DNA single strand breaks and supF gene mutations. Carcinogenesis 2001; 22:1231-8. [PMID: 11470754 DOI: 10.1093/carcin/22.8.1231] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Exposure to DNA damaging agents and mutagens often occurs as combinations of agents, or as complex mixtures of chemicals. We found that plasmid DNA adducted with benzo[a]pyrene diol epoxide (BPDE) was more susceptible to UV-induced single strand breaks than was control DNA. To determine whether the increase in DNA damage also applied to mutagenic lesions, the supF gene forward mutation assay was used to compare mutations induced by BPDE alone, UVB, UVC, BPDE followed by UVB and BPDE followed by UVC. It was found that the mutation frequency for BPDE + UVB (1167 in 10(4) transformants) was higher than BPDE alone (12 in 10(4) transformants) or UVB alone (446 in 10(4) transformants), and the mutation frequency for BPDE + UVC (197 in 10(4) transformants) was higher than BPDE alone or UVC alone (26 in 10(4) transformants). For BPDE + UVB and BPDE + UVC there was a significant increase in plasmids with multiple mutations. Whilst these indicate error prone repair due to the single strand breaks, the different mutation frequencies in plasmids treated to give similar levels of strand breaks suggest other mechanisms for the mutations in plasmids with single mutation events. The spectrum of non-multiple mutations in the two combined treatments included both UV signature mutations (GC-->AT as the most common mutation) and BPDE signature mutations (GC-->TA and GC-->CG as the most common mutations). However, the increase in absolute mutation frequency of BPDE signature mutations between BPDE treatment and BPDE + UV treatment was greater than the increase in absolute mutation frequency of UV signature mutations, even though the level of BPDE adducts was identical in each case. These results suggest two possibilities: (i) the BPDE adducts are photoactivated to a more mutagenic lesion, or (ii) the presence of UV lesions lead to the BPDE adducts becoming more mutagenic.
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Affiliation(s)
- M N Routledge
- Department of Biological Sciences, De Montfort University, UK.
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White IN, Carthew P, Davies R, Styles J, Brown K, Brown JE, Smith LL, Martin EA. Short-term dosing of alpha-hydroxytamoxifen results in DNA damage but does not lead to liver tumours in female Wistar/Han rats. Carcinogenesis 2001; 22:553-7. [PMID: 11285188 DOI: 10.1093/carcin/22.4.553] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
It is now generally accepted that activation of tamoxifen occurs as a result of metabolism to alpha-hydroxytamoxifen. In this study, alpha-hydroxytamoxifen was given to female Wistar/Han rats (0.103 or 0.0103 mmol/kg, intraperitoneally, daily for 5 days). This resulted in liver DNA damage, determined by (32)P-post-labelling, of 3333 +/- 795 or 343 +/- 68 adducts/10(8) nucleotides, respectively (mean +/- SD, n = 4). Following HPLC separation, the retention times of the major alpha-hydroxytamoxifen DNA adducts were similar to those seen following the administration of tamoxifen. However, after rats were treated with alpha-hydroxytamoxifen (0.103 mmol/kg) for 5 days and the animals kept for up to 13 months, no liver tumours developed (0/7 rats), even with phenobarbital promotion (0/5 rats). GST-P foci were detected in the liver, but only after 13 months was their number or area significantly increased over the corresponding controls. When alpha-hydroxytamoxifen was given to female lambda/lacI transgenic rats (0.103 mmol/kg orally for 10 days) and the animals killed 46 days later, there was an approximate 1.8-fold increase in mutation frequency but no significant increase in G:C to T:A transversions as described after tamoxifen treatment. It is concluded that DNA damage alone, resulting from the short-term administration of alpha-hydroxytamoxifen, is not sufficient to initiate liver tumours even with phenobarbital promotion. As with tamoxifen, long-term exposure may be required to allow promotion and progression of transformed cells.
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Affiliation(s)
- I N White
- MRC Toxicology Unit, Hodgkin Building, Lancaster Road, Leicester, LE1 9HN, UK.
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Park CJ, Vandel NM, Ruprai DK, Martin EA, Gates KM, Coker D. Detection of group B streptococcal colonization in pregnant women using direct latex agglutination testing of selective broth. J Clin Microbiol 2001; 39:408-9. [PMID: 11191227 PMCID: PMC87747 DOI: 10.1128/jcm.39.1.408-409.2001] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Abstract
Oxidative stress can have a myriad of effects on many different cell types. The mechanisms by which these effects occur are not completely known. Chimeric proteins of the GAL4 DNA binding domain and Cdk4, or the GAL4 activation domain with p16, were expressed in the yeast two-hybrid system. Cells expressing these chimeric proteins were cultured with hydrogen peroxide and decreases in beta-galactosidase activity were observed when compared to cells incubated without hydrogen peroxide. When cells, which expressed the intact GAL4 binding protein, were cultured in the presence of hydrogen peroxide the opposite was observed. Incubation of cells with buthionine sulfoximine augmented these responses to hydrogen peroxide. These data suggest that one of the mechanisms by which oxidative stress acts is via the modulation of protein-protein interactions and demonstrate that the yeast two-hybrid system may be a model by which to study protein interactions due to oxidative stress.
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Affiliation(s)
- E A Martin
- Department of Microbiology and Immunology, Leo Jenkins Cancer Center, Greenville, North Carolina 27858, USA
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Abstract
The antiestrogen tamoxifen is widely used in the adjuvant therapy of breast cancers in women and helps to prevent the occurrence of breast tumors in healthy women. However, epidemiological studies have shown tamoxifen treatment to be associated with a 2- to 5-fold increased risk of endometrial cancer. In rats but not in mice, long-term administration of tamoxifen results in an increase in hepatocellular carcinomas. Mechanistically, this occurs through metabolic activation of the drug, mainly by the CYP3A family, to an electrophilic species, that causes DNA damage in target tissues, and subsequently leads to gene mutations. It is controversial whether low levels of DNA damage occur in human uterine tissues, and there is no evidence that this can be causally related to the mechanisms of carcinogenesis. In healthy women, the risk:benefits for the use of tamoxifen is in part related to the risk of developing breast cancer. The results from the carcinogenicity studies in rats do not predict the likelihood that women will develop liver cancer or indeed cancers in other organs. The mechanism of endometrial cancer in women remains unresolved, but the experience with tamoxifen has highlighted the potential problems that need to be addressed in the assessment of future generations of selective estrogen receptor modulators.
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Carthew P, Edwards RE, Nolan BM, Martin EA, Heydon RT, White IN, Tucker MJ. Tamoxifen induces endometrial and vaginal cancer in rats in the absence of endometrial hyperplasia. Carcinogenesis 2000; 21:793-7. [PMID: 10753217 DOI: 10.1093/carcin/21.4.793] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Tamoxifen was administered orally to neonatal rats on days 2-5 after birth and the subsequent effects on the uterus were characterized, morphometrically, over the following 12 months. Tamoxifen inhibited development of the uterus and glands in the endometrium, indicating a classical oestrogen antagonist action. Between 24 and 35 months after tamoxifen treatment there was a significant increase in the incidence (26%) of uterine adenocarcinomas and a 9% incidence of squamous cell carcinomas of the vagina/cervix in the absence of any oestrogen agonist effect in the uterus. This demonstrates that an oestrogen agonist effect is not an absolute requirement for the carcinogenic effect of tamoxifen in the reproductive tract of the rat. The unopposed oestrogen agonist effect of tamoxifen on the endometrium may not be the only factor involved in the development of endometrial cancers. It is possible that tamoxifen causes these tumours via a genotoxic mechanism similar to that seen in rat liver. However, using (32)P-post-labelling we failed to find evidence of tamoxifen-induced DNA adducts in the uterus. Tamoxifen may affect hormonal imprinting of oestrogen receptor responses in stem cells of the uterus, causing reproductive tract cancers to arise at a later time, in the same way as has been proposed for diethylstilbestrol. If these rodent data extrapolate to humans, then women who are taking tamoxifen as a chemopreventative may have an increased risk of vaginal/cervical cancer, as well as endometrial cancer.
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Affiliation(s)
- P Carthew
- MRC Toxicology Unit, Hodgkin Building, University of Leicester, Leicester LE1 9HN, UK.
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43
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Brown K, Heydon RT, Jukes R, White IN, Martin EA. Further characterization of the DNA adducts formed in rat liver after the administration of tamoxifen, N-desmethyltamoxifen or N, N-didesmethyltamoxifen. Carcinogenesis 1999; 20:2011-6. [PMID: 10506118 DOI: 10.1093/carcin/20.10.2011] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The present study compares the formation of DNA adducts, determined by (32)P-postlabelling, in the livers of rats given tamoxifen and the N-demethylated metabolites N-desmethyltamoxifen and N, N-didesmethyltamoxifen. Results show that after 4 days treatment (0.11 mmol/kg i.p.), similar levels of DNA damage were seen after treatment with either tamoxifen or N-desmethyltamoxifen [109 +/- 40 (n = 3) and 100 +/- 33 (n = 4) adducts/10(8) nucleotides, respectively], even though the concentration of tamoxifen in the livers of tamoxifen-treated rats was about half that of N-desmethyltamoxifen in the N-desmethyltamoxifen-treated animals (51 +/- 16 and 100 +/- 8 nmol/g, respectively). Administration of N, N-didesmethyltamoxifen to rats resulted in a 5-fold lower level of damage (19 adducts/10(8) nucleotides, n = 2). Following (32)P-postlabelling and HPLC, hepatic DNA from rats treated with tamoxifen and its metabolites showed distinctive patterns of adducts. Treatment of rats with N,N-didesmethyltamoxifen gave a major product that co-eluted with one of the minor adduct peaks seen in the livers of rats given tamoxifen. Following dosing with N-desmethyltamoxifen, the major product co-eluted with one of the main peaks seen following treatment of rats with tamoxifen. This suggests that tamoxifen can be metabolically converted to N-desmethyltamoxifen prior to activation. However, analysis of the (32)P-postlabelled products from the reaction between alpha-acetoxytamoxifen and calf thymus DNA showed two main peaks, the smaller one of which ( approximately 15% of the total) also co-eluted with that attributed to N-desmethyltamoxifen. This indicates that N-desmethyltamoxifen and N,N-didesmethyltamoxifen are activated in a similar manner to tamoxifen leading to a complex mixture of adducts. Since an HPLC system does not exist that can fully separate all these (32)P-postlabelled adducts, care has to be taken when interpreting results and determining the relative importance of individual adducts and the metabolites they are derived from in the carcinogenic process.
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Affiliation(s)
- K Brown
- MRC Toxicology Unit, Hodgkin Building, Lancaster Road, Leicester LE1 9HN, UK
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Lowes DA, Brown K, Heydon RT, Martin EA, Gant TW. Site-specific tamoxifen-DNA adduct formation: lack of correlation with mutational ability in Escherichia coli. Biochemistry 1999; 38:10989-96. [PMID: 10460153 DOI: 10.1021/bi982704f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have mapped sites of tamoxifen adduct formation, in the lacI gene using the polymerase STOP assay, following reaction in vitro with alpha-acetoxytamoxifen and horseradish peroxidase (HRP)/H(2)O(2) activated 4-hydroxytamoxifen. For both compounds, most adduct formation occurred on guanines. However, one adenine, within a run of guanines, generated a strong polymerase STOP site with activated 4-hydroxytamoxifen, and a weaker STOP site with alpha-acetoxytamoxifen at the same location. In Escherichia coli the lac I gene reacted with 4-hydroxytamoxifen was more likely to be mutated (2 orders of magnitude) than when reacted with alpha-acetoxytamoxifen, despite the greater DNA adduct formation by alpha-acetoxytamoxifen. This correlates with the greater predicted ability of activated 4-hydroxytamoxifen adducts to disrupt DNA structure than alpha-acetoxytamoxifen adducts. For lac I reacted with activated 4-hydroxytamoxifen, a hot spot of base mutation was located in the region of the only adenosine adduct. No mutational hot spots were observed with alpha-acetoxytamoxifen. Our data clearly shows a lack of correlation between gross adduct number, as assayed by (32)P-postlabeling and mutagenic potential. These data indicate the importance of minor adduct formation in mutagenic potential and further that conclusions regarding the mutagenicity of a chemical may not be reliably derived from the gross determination of adduct formation.
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Affiliation(s)
- D A Lowes
- Medical Research Council Toxicology Unit, University of Leicester, United Kingdom
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Farrell DJ, Martin EA. Strategies to improve the nutritive value of rice bran in poultry diets. III. The addition of inorganic phosphorus and a phytase to duck diets. Br Poult Sci 1998; 39:601-11. [PMID: 9925312 DOI: 10.1080/00071669888467] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
1. In the first of 2 experiments ducklings grown from 2 to 19 d were given diets with 0, 200 or 400 g rice bran, with or without a phytase and with 1 or 3 g inorganic phosphorus (Pi) per kg for rice bran-based diets only. In the 2nd experiment rice bran concentrations were 0, 300 or 600 g rice bran per kg with or without a phytase and 1 g Pi/kg. Ducks were grown from 19 to 40 d of age. 2. In experiment 1, a response to phytase was observed for weight gain and food intake on most diets except those with 200 g rice bran (3 g Pi) and 4.00 g rice bran (1 g P)i/kg. Main effects showed that 400 g rice bran depressed growth rate and food conversion ratio (FCR); increasing Pi depressed food intake, while food phytase increased food intake and growth rate over 2 to 19 d. There were several interactions. Dry matter and P retention were reduced but N digestibility improved when rice bran was increased from 200 g to 400 g/kg at 2 to 10 d of age; apparent metabolisable energy (AME) and calcium retentions were improved, similar results being seen at 10 to 19 d of age. Calcium and P retentions increased with the addition of food phytase and, at 10 to 19 d of age, phytase increased dry matter digestibility. Increasing Pi improved calcium and P retention, but only at 2 to 10 d of age. 3. Tibia ash (g or g/kg) content of bone was lowest on the diet without rice bran and without phytase; Pi concentration had no effect but phytase increased tibia ash on diets with 0 and 200 g rice bran and 1 g Pi/kg. Retention of several minerals in tibia ash declined at the highest rice bran inclusion rate; Pi level and phytase both increased Mg retention. 4. In experiment 2, food intake and growth rate of ducks, but not FCR, declined as rice bran inclusion increased from 0 to 600 g/kg. Phytase improved growth rate but not food intake and FCR on all 3 diets. Dry matter digestibility declined with increasing rice bran inclusion, but AME increased; retention of P and Mg declined but those of Ca and Fe increased. Phytase improved dry matter digestibility and retention of N and P. AME also increased but this was only on diets with 0 and 600 g rice bran/kg. There were reductions of 8% and 10% in P excreted in experiments 1 and 2 respectively when food phytase was added. 5. Tibia ash declined with increasing dietary inclusion of rice bran. Zn and Mn in ash tended to decline and Mg to increase; Ca and P showed no change in concentration in tibia ash. Again, phytase increased tibia ash content in bone. 6. It was concluded that there were a number of unexpected benefits from adding a food phytase to these diets, which resulted in improved nutrient yield and bird performance, although several of the diets appeared to be adequate in available P.
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Affiliation(s)
- D J Farrell
- Department of Biochemistry, University of New England, Armidale, NSW, Australia
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Martin EA, Nolan JV, Nitsan Z, Farrell DJ. Strategies to improve the nutritive value of rice bran in poultry diets. IV. Effects of addition of fish meal and a microbial phytase to duckling diets on bird performance and amino acid digestibility. Br Poult Sci 1998; 39:612-21. [PMID: 9925313 DOI: 10.1080/00071669888476] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
1. Ducklings were given diets with vegetable protein (VP) and 0 or 600 g rice bran/kg; fish meal (60 g/kg) and a phytase (+, -) were added to the diets (VP + AP). An additional 40 g soyabean meal/kg was added to the diet with rice bran (VP ++). Amino acid digestibility and mineral retention were measured in the lower ileum of ducklings killed at 23 d of age. Acid insoluble ash was used as an inert marker. Trypsin and amylase activities were also measured and weights of the pancreas and small intestine recorded at slaughter. 2. Addition of soyabean meal (VP ++) to the diet with rice bran improved growth rate and food intake compared to the diet without (VP) and gave the same food intake and growth rate as the comparable basal diet (VP) without rice bran. Fish meal improved growth rate on the diets without rice bran and improved food intake on this diet (VP + AP). Rice bran depressed growth rate and food conversion ratio (FCR); protein source affected growth rate, food intake and FCR; phytase increased food intake only. There were several interactions. 3. Determined total amino acid composition of the diets appeared to meet the essential amino acid requirements of ducklings. Rice bran depressed the ileal digestibility of virtually all amino acids and phytase had no direct effect, although there were interactions. Fish meal addition to diets with rice bran improved the apparent digestibility of several essential amino acids as well as that of dry matter and crude protein. 4. Ileal retention of some minerals and tibia ash content were reduced by rice bran. Fish meal and phytase inclusion increased P retention and ash in tibia. 5. Higher intestinal trypsin activity and increased pancreas size were seen in ducklings on diets with rice bran compared to those without. Intestinal amylase activity was reduced in ducklings given rice bran, probably because of its low starch content. 6. The stimulating effect of fish meal on duckling performance was probably caused in part by the improvement in the digestibility of some amino acids. The addition of small amounts of minerals in fish meal may have increased mineral retention. Phytase gave benefits anticipated from our previous work, but also improved lysine and threonine digestibility in diets containing vegetable protein only.
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Affiliation(s)
- E A Martin
- Department of Biochemistry, University of New England, Armidale, NSW, Australia
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Martin EA, Farrell DJ. Strategies to improve the nutritive value of rice bran in poultry diets. II. Changes in oil digestibility, metabolisable energy and attempts to increase the digestibility of the oil fraction in the diets of chickens and ducklings. Br Poult Sci 1998; 39:555-9. [PMID: 9800043 DOI: 10.1080/00071669888764] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
1. In experiment 1, the effects of age on oil digestibility and apparent metabolisable energy (AME) were measured in chickens and ducklings between 3 and 28 d of age on a diet with 400 g rice bran/kg. In experiment 2, a biosurfactant and a food lipase were added to diets of chickens containing 200 and 400 g rice bran/kg. In experiment 3, chicken diets containing 0 or 400 g rice bran/kg were supplemented with a food lipase (2 concentrations) or a food enzyme or their combination. 2. In experiment 1, oil metabolisability and AME increased substantially as chickens aged. Oil metabolisability was much higher in ducklings, when comparisons were made with chickens of similar age. 3. In experiment 2, lipase or biosurfactant gave no improvement in bird performance. Growth rate and food conversion ratio were, respectively, 23% and 10% better on diets with 200 compared to 400 g rice bran/kg. 4. In experiment 3, there was a significant growth response to lipase plus the enzyme mixture on the diet with 200 g rice bran/kg. On the diet with 400 g rice bran/kg, growth improvement was seen with the enzyme mixture only. 5. In experiment 3, enzyme addition did not increase oil metabolisability or AME. At 4 to 8 d of age AME was higher on the diet without rice bran but oil metabolisability was the same as on the diet with rice bran. At 19 to 23 d of age AME was similar but oil metabolisability was higher on the diet with rice bran than without. Droppings' dry matter was higher on diets without than with rice bran (32.4 vs 27.1%). 6. The response to lipase and the combination of this and a food enzyme suggest that there may be benefit in examining this interaction further although they had no effect on oil metabolisability or on AME. It is concluded that a stable AME for rice bran cannot be provided for chickens until at least 21 d of age.
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Affiliation(s)
- E A Martin
- Department of Biochemistry, Microbiology and Nutrition, University of New England, Armidale, NSW, Australia
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Farrell DJ, Martin EA. Strategies to improve the nutritive value of rice bran in poultry diets. I. The addition of food enzymes to target the non-starch polysaccharide fractions in diets of chickens and ducks gave no response. Br Poult Sci 1998; 39:549-54. [PMID: 9800042 DOI: 10.1080/00071669888755] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
1. Three experiments were undertaken to test the efficacy of 2 enzymes targeting mainly the non-starch polysaccharides (NSPs) in rice bran. 2. In experiment one, 400 g rice bran/kg depressed chick performance and there was a significant decline in growth rate and food intake with increasing inclusion of rice bran (0, 200, 400 g). Neither enzyme had any benefit. 3. In experiment two, rice bran (inclusion 200 and 400 g/kg), did not alter growth rate, food intake or food conversion ratio of duckling (3 to 17 d of age). Again enzyme addition gave no response. 4. In experiment three, 300 g rice bran/kg stimulated duck (19 to 35 d of age) growth while 600 g rice bran/kg depressed growth but not food intake. Enzymes gave no response. 5. Relative gut viscosity declined with increasing rice bran inclusion as did dry matter in ileal digesta. There were differences between ducklings and chickens. 6. It was concluded that NSPs were not a significant factor in altering the nutritive value of rice bran and the enzymes used were therefore unlikely to be of benefit.
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Affiliation(s)
- D J Farrell
- Department of Biochemistry, Microbiology and Nutrition, University of New England, Armidale, NSW, Australia
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Martin EA, Heydon RT, Brown K, Brown JE, Lim CK, White IN, Smith LL. Evaluation of tamoxifen and alpha-hydroxytamoxifen 32P-post-labelled DNA adducts by the development of a novel automated on-line solid-phase extraction HPLC method. Carcinogenesis 1998; 19:1061-9. [PMID: 9667745 DOI: 10.1093/carcin/19.6.1061] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A novel HPLC system has been developed that has allowed the separation of tamoxifen DNA adducts formed in the livers of rats and mice treated with this drug. At least 13 different peaks have been separated from 32P-post-labelled DNA, with two major peaks jointly accounting for >60% of the total adducts formed by tamoxifen in the livers of treated rats and mice. This is a great improvement on the resolution obtained by thin layer chromatography, which separates the adducts into one main product consisting of a group of major adduct spots eluting together, plus several other minor spots. Identification of the nature of some of the peaks has been investigated. Comparisons of the products formed when alpha-acetoxytamoxifen is reacted with DNA in vitro with 32P-post-labelled liver DNA adducts from rats treated with tamoxifen or alpha-hydroxytamoxifen in vivo, appear to confirm that a major route of activation of tamoxifen in vivo is via alpha-hydroxylation. The resolving power of this HPLC system has further extended this result to show that six of the peaks, including the two major peaks, are formed by the reaction of an activated alpha-hydroxytamoxifen with DNA. Activation of 4-hydroxytamoxifen by the peroxidase/H2O2 system in vitro gives a more polar DNA adduct seen only at trace levels in liver DNA from tamoxifen-treated rats and mice.
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Brown K, Brown JE, Martin EA, Smith LL, White IN. Determination of DNA damage in F344 rats induced by geometric isomers of tamoxifen and analogues. Chem Res Toxicol 1998; 11:527-34. [PMID: 9585484 DOI: 10.1021/tx9702289] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
To investigate the activation mechanisms involved in tamoxifen carcinogenicity, analogues of tamoxifen isomers modified at the ethyl group were synthesized and assessed for their ability to induce hepatic DNA damage following their administration to female F344 rats. The cis isomer was prepared by acid-catalyzed isomerization of tamoxifen and isolated by preparative HPLC. The active metabolite alpha-hydroxytamoxifen and geometric isomers of bromotamoxifen and C-desmethylenetamoxifen, analogues in which the ethyl group has been replaced by a bromine atom and methyl group, respectively, were synthesized according to published procedures. The levels of hepatic DNA adducts induced were determined by 32P-postlabeling. Bromotamoxifen and tamoxifen 1,2-epoxide caused no detectable DNA damage relative to controls. Trans isomers of tamoxifen, C-desmethylenetamoxifen, and alpha-hydroxytamoxifen all produced DNA adducts at a 5-90-fold higher level than the corresponding cis isomers. In contrast, both the cis and trans isomers of alpha-hydroxytamoxifen showed similar reactivity toward calf thymus DNA in vitro. Molecular models of alpha-hydroxytamoxifen isomers suggest this difference in DNA adduct-forming ability is due to steric hindrance of the enzymes involved in the activation of this metabolite. There were high adduct levels in the liver, but no uterine DNA adducts were detected in rats treated with alpha-hydroxytamoxifen. This suggests that in contrast to the liver, alpha-hydroxytamoxifen is not further activated in rat uterus. This may help to explain the absence of uterine tumors in rats following long-term tamoxifen treatment.
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Affiliation(s)
- K Brown
- Pharmaceutical Chemistry, University of Bradford, West Yorkshire BD7 1DP, U.K
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