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Ren P, Didham RK, Murphy MV, Zeng D, Si X, Ding P. Forest edges increase pollinator network robustness to extinction with declining area. Nat Ecol Evol 2023; 7:393-404. [PMID: 36717744 PMCID: PMC9998274 DOI: 10.1038/s41559-022-01973-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Accepted: 12/16/2022] [Indexed: 02/01/2023]
Abstract
Edge effects often exacerbate the negative effects of habitat loss on biodiversity. In forested ecosystems, however, many pollinators actually prefer open sunny conditions created by edge disturbances. We tested the hypothesis that forest edges have a positive buffering effect on plant-pollinator interaction networks in the face of declining forest area. In a fragmented land-bridge island system, we recorded ~20,000 plant-pollinator interactions on 41 islands over 3 yr. We show that plant richness and floral resources decline with decreasing forest area at both interior and edge sites, but edges maintain 10-fold higher pollinator abundance and richness regardless of area loss. Edge networks contain highly specialized species, with higher nestedness and lower modularity than interior networks, maintaining high robustness to extinction following area loss while forest interior networks collapse. Anthropogenic forest edges benefit community diversity and network robustness to extinction in the absence of natural gap-phase dynamics in small degraded forest remnants.
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Affiliation(s)
- Peng Ren
- MOE Key Laboratory of Biosystems Homeostasis and Protection, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Raphael K Didham
- School of Biological Sciences, The University of Western Australia, Crawley, Western Australia, Australia.,CSIRO Health and Biosecurity, Centre for Environment and Life Sciences, Floreat, Western Australia, Australia
| | - Mark V Murphy
- School of Biological Sciences, The University of Western Australia, Crawley, Western Australia, Australia
| | - Di Zeng
- Zhejiang Zhoushan Archipelago Observation and Research Station, Institute of Eco-Chongming, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Xingfeng Si
- Zhejiang Zhoushan Archipelago Observation and Research Station, Institute of Eco-Chongming, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Ping Ding
- MOE Key Laboratory of Biosystems Homeostasis and Protection, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China.
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2
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Sultanova R, Martynova M, Sazgutdinova R. Honey-Bearing Potential of Tilia cordata Mill. Forests in the Southern Urals. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.832442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
This article examined the honey-bearing potential of Tilia cordata Mill. stands in the Southern Urals using forest management and taxation methods. The studies were conducted in pure and mixed even- and uneven-aged forests with T. cordata Mill. in different natural zones of the Southern Urals on the territory of the Bashkirs. These were forests of the South Ural forest-steppe region, the forest-steppe region of the European part of Russia, the area of coniferous-deciduous (mixed) forests of the European part of Russia. The research employed the method of laying temporary and permanent trial areas. T. cordata Mill. forests on the republic’s territory were divided into zones by forest districts. There is a discrepancy between the territorial localization of “nectar” (honey-bearing) linden and designated forest areas, that is, honey-bearing forest areas on the republic’s territory. It could be due to the lacking methodology for assigning linden to these categories. The increased rotation age of linden trees to 81–90 years for several decades, a ban on final cutting, reduced annual cut of soft-leaved forests by 15% enlarged the stocks of overmature forest to 48%. Depending on the age, the number of flowers on one T. cordata Mill. tree varies from 0 to 60.2 thousand pieces. The maximum amount of nectar is 69.04 kg/ha at 12-day linden flowering. The honey productivity of plants including T. cordata Mill., calculated concerning the linden age, its share in the forest composition, the average number of flowers on the tree, nectar per 1 ha of linden and the flowering period ranged from 252.8 to 662.8 kg/ha.
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3
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Perrot T, Bretagnolle V, Gaba S. Environmentally‐friendly landscape management improves oilseed rape yields by increasing pollinators and reducing pests. J Appl Ecol 2022. [DOI: 10.1111/1365-2664.14190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thomas Perrot
- Centre d’Etudes Biologiques de Chizé, UMR7372, CNRS & Université de La Rochelle, F‐79360 Villiers‐en‐Bois France
- INRAE, UMR 1065 Sante et Agroécologie du Vignoble, ISVV Université de Bordeaux Bordeaux Sciences Agro, F‐33883 Villenave d’Ornon Cedex France
| | - Vincent Bretagnolle
- Centre d’Etudes Biologiques de Chizé, UMR7372, CNRS & Université de La Rochelle, F‐79360 Villiers‐en‐Bois France
- LTSER « Zone Atelier Plaine & Val de Sèvre », F‐79360 Villiers‐en‐Bois France
| | - Sabrina Gaba
- Centre d’Etudes Biologiques de Chizé, UMR7372, CNRS & Université de La Rochelle, F‐79360 Villiers‐en‐Bois France
- USC 1339 Agripop Centre d’Etudes Biologiques de Chizé, INRAE, F‐79360 Villiers‐en‐Bois France
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4
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Ropars L, Affre L, Thébault É, Geslin B. Seasonal dynamics of competition between honey bees and wild bees in a protected Mediterranean scrubland. OIKOS 2022. [DOI: 10.1111/oik.08915] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lise Ropars
- IMBE, Aix Marseille Univ., Avignon Univ., CNRS, IRD Marseille France
| | - Laurence Affre
- IMBE, Aix Marseille Univ., Avignon Univ., CNRS, IRD Marseille France
| | - Élisa Thébault
- CNRS, Sorbonne Univ., Inst. of Ecology and Environmental Sciences of Paris Paris France
| | - Benoît Geslin
- IMBE, Aix Marseille Univ., Avignon Univ., CNRS, IRD Marseille France
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5
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Schuberta LF, Hellwigb N, Kirmera A, Schmid-Eggerc C, Schmidta A, Diekerb P, Tischewa S. Habitat quality and surrounding landscape structures influence wild bee occurrence in perennial wildflower strips. Basic Appl Ecol 2021. [DOI: 10.1016/j.baae.2021.12.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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6
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Reproductive patterns of solitary cavity-nesting bees responsive to both local and landscape factors. Urban Ecosyst 2021. [DOI: 10.1007/s11252-021-01116-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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7
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McCabe LM, Boyle NK, Scalici MB, Pitts-Singer TL. Adult body size measurement redundancies in Osmia lignaria and Megachile rotundata (Hymenoptera: Megachilidae). PeerJ 2021; 9:e12344. [PMID: 34760367 DOI: 10.7717/peerj.12344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 09/28/2021] [Indexed: 11/20/2022] Open
Abstract
Metrics to assess relative adult bee body size have included both mass and morphometrics, but these metrics may not equally or reliably estimate body size for all bee species and in all situations, due to bee age, diet, and/or environment. Understanding the relationships between different metrics and possible redundancies in the information they afford is important but not always known. Body size measurements provide valuable data for interpreting research outcomes for managed solitary bees, including Osmia lignaria Say and Megachile rotundata F. (Hymenoptera: Megachilidae). Applied studies of these important and readily available U.S. crop pollinators focus on refining commercial management practices, and basic empirical studies in various scientific disciplines (from genomics to ecology) employ them as model systems to study solitary bees. To examine common metrics of body size, we measured head capsule width (HCW), intertegular distance (ITD), and fresh and dry weights of newly emerged adults of both species. Using linear and exponential models, we determined relationships between these body size metrics. For M. rotundata, linear models best described relationships between ITD and all other metrics, and between HCW and fresh and dry weights. For O. lignaria, linear models best fit relationships between all metrics except for fresh weight with both ITD and HCW, which were fitted better with exponential models. For both species, model fits were strongest when males and females were pooled. Depending on the study question, knowing that only one metric may reliably measure body size can simplify evaluations of O. lignaria and M. rotundata responses to artificial or environmental variables.
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Affiliation(s)
- Lindsie M McCabe
- USDA-ARS Pollinating Insect Research Unit, Logan, UT, United States
| | - Natalie K Boyle
- USDA-ARS Pollinating Insect Research Unit, Logan, UT, United States.,Department of Entomology, Center for Pollinator Research, Pennsylvania State University, University Park, PA, United States
| | - Morgan B Scalici
- Biology Department, Utah State University, Logan, UT, United States
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8
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Pollination Potential of Riparian Hardwood Forests—A Multifaceted Field-Based Assessment in the Vistula Valley, Poland. FORESTS 2021. [DOI: 10.3390/f12070907] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Riparian forests with oaks, ashes and elms, now highly fragmented and rare in Europe, are considered hotspots for ecosystem services. However, their capacity to provide pollination seems to be quite low, although reports from in-situ research supporting this view are scarce. Our goal was therefore to thoroughly assess their pollination potential based on multifaceted field measurements. For this, we selected six test sites with well-developed riparian hardwood forests, located in the agricultural landscape along the middle Vistula River in Poland. We used seven indicators relating to habitat suitability (nesting sites and floral resources) and pollinator abundance (bumblebees and other Apoidea) and propose a threshold value (AdjMax) based on value distribution and Hampel’s test to indicate the level of pollination potential for this type of riparian forest. The obtained AdjMax for bumblebee density was 500 ind. ha−1, for Apoidea abundance—0.42 ind. day−1, while for nectar resources—200 kg ha−1. We demonstrate that the investigated small patches of the riparian hardwood forest have a higher pollination potential than reported earlier for riparian and other broadleaved temperate forests, but the indicators were inconsistent. As forest islands in the agricultural landscape, riparian hardwood forests play an important role in maintaining the diversity and abundance of wild pollinators, especially in early spring when there is still no food base available elsewhere.
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9
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The key is in variation: Spatial-environmental structuring of the morphological variation of a widespread Neotropical bee (Eulaema nigrita). ZOOL ANZ 2021. [DOI: 10.1016/j.jcz.2021.05.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Osorio-Canadas S, Flores-Hernández N, Sánchez-Ortiz T, Valiente-Banuet A. Changes in the structure and composition of the 'Mexical' scrubland bee community along an elevational gradient. PLoS One 2021; 16:e0254072. [PMID: 34197555 PMCID: PMC8248643 DOI: 10.1371/journal.pone.0254072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 06/21/2021] [Indexed: 11/25/2022] Open
Abstract
'Mexical' scrubland is a sclerophyllous evergreen Mediterranean-like vegetation occurring in the leeward slopes of the main Mexican mountain ranges, under tropical climate. This biome occupies an elevational range approximately from 1900 to 2600 meters above sea level, which frequently is the upper-most part of the mountains range. This puts it at risk of extinction in a scenario of global warming in which an upward retraction of this type of vegetation is expected. The Mexical remains one of the least studied ecosystems in Mexico. For instance, nothing is known about pollinator fauna of this vegetation. Our main objective is to make a first insight into the taxonomic identity of the bee fauna that inhabits this biome, and to study how it is distributed along the elevational gradient that it occupies. Our results highlight that elevation gradient negatively affects bee species richness and that this relationship is strongly mediated by temperature. Bee abundance had no significant pattern along elevational gradient, but shows a significant relationship with flower density. Interestingly, and contrary to previous works, we obtained a different pattern for bee richness and bee abundance. Bee community composition changed strongly along elevation gradient, mainly in relation to temperature and flower density. In a global warming scenario, as temperatures increases, species with cold preferences, occupying the highest part of the elevation gradient, are likely to suffer negative consequences (even extinction risk), if they are not flexible enough to adjust their physiology and/or some life-story traits to warmer conditions. Species occupying mid and lower elevations are likely to extend their range of elevational distribution towards higher ranges. This will foreseeably cause a new composition of species and a new scenario of interactions, the adjustment of which still leaves many unknowns to solve.
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Affiliation(s)
- Sergio Osorio-Canadas
- Departamento de Ecología de la Biodiversidad, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Noé Flores-Hernández
- Departamento de Ecología de la Biodiversidad, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Departamento de Ciencias Ambientales, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Unidad Lerma, Lerma de Villada, Mexico
| | - Tania Sánchez-Ortiz
- Departamento de Ecología de la Biodiversidad, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Alfonso Valiente-Banuet
- Departamento de Ecología de la Biodiversidad, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
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11
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Prendergast KS, Dixon KW, Bateman PW. Interactions between the introduced European honey bee and native bees in urban areas varies by year, habitat type and native bee guild. Biol J Linn Soc Lond 2021. [DOI: 10.1093/biolinnean/blab024] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Abstract
European honey bees have been introduced across the globe and may compete with native bees for floral resources. Compounding effects of urbanization and introduced species on native bees are, however, unclear. Here, we investigated how honey bee abundance and foraging patterns related to those of native bee abundance and diversity in residential gardens and native vegetation remnants for 2 years in urbanized areas of the Southwest Australian biodiversity hotspot and assessed how niche overlap influenced these relationships. Honey bees did not overtly suppress native bee abundance; however, complex relationships emerged when analysing these relationships according to body size, time of day and floral resource levels. Native bee richness was positively correlated with overall honeybee abundance in the first year, but negatively correlated in the second year, and varied with body size. Native bees that had higher resource overlap with honey bees were negatively associated with honey bee abundance, and resource overlap between honey bees and native bees was higher in residential gardens. Relationships with honey bees varied between native bee taxa, reflecting adaptations to different flora, plus specialization. Thus, competition with introduced bees varies by species and location, mediated by dietary breadth and overlap and by other life-history traits of individual bee species.
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Affiliation(s)
- Kit S Prendergast
- School of Molecular and Life Sciences, Curtin University, Bentley WA, Australia
| | - Kingsley W Dixon
- School of Molecular and Life Sciences, Curtin University, Bentley WA, Australia
| | - Philip W Bateman
- School of Molecular and Life Sciences, Curtin University, Bentley WA, Australia
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12
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Theodorou P, Herbst SC, Kahnt B, Landaverde-González P, Baltz LM, Osterman J, Paxton RJ. Urban fragmentation leads to lower floral diversity, with knock-on impacts on bee biodiversity. Sci Rep 2020; 10:21756. [PMID: 33303909 PMCID: PMC7730174 DOI: 10.1038/s41598-020-78736-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 11/26/2020] [Indexed: 11/23/2022] Open
Abstract
Bees and flowering plants are two closely interacting groups of organisms. Habitat loss and fragmentation associated with urbanisation are major threats to both partners. Yet how and why bee and floral richness and diversity co-vary within the urban landscape remain unclear. Here, we sampled bees and flowering plants in urban green spaces to investigate how bee and flowering plant species richness, their phylogenetic diversity and pollination-relevant functional trait diversity influence each other in response to urban fragmentation. As expected, bee abundance and richness were positively related to flowering plant richness, with bee body size (but not bee richness and diversity) increasing with nectar-holder depth of flowering plants. Causal modelling indicated that bottom-up effects dictated patterns of bee-flower relationships, with urban fragmentation diminishing flowering plants richness and thereby indirectly reducing bee species richness and abundance. The close relationship between bees and flowering plants highlights the risks of their parallel declines in response to land-use change within the urban landscape.
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Affiliation(s)
- Panagiotis Theodorou
- General Zoology, Institute for Biology, Martin-Luther University Halle-Wittenberg, Hoher Weg 8, 06120, Halle (Saale), Germany.
| | - Sarah-Christine Herbst
- General Zoology, Institute for Biology, Martin-Luther University Halle-Wittenberg, Hoher Weg 8, 06120, Halle (Saale), Germany
| | - Belinda Kahnt
- General Zoology, Institute for Biology, Martin-Luther University Halle-Wittenberg, Hoher Weg 8, 06120, Halle (Saale), Germany
| | - Patricia Landaverde-González
- General Zoology, Institute for Biology, Martin-Luther University Halle-Wittenberg, Hoher Weg 8, 06120, Halle (Saale), Germany
- Unidad para el Conocimiento, Uso y Valoración de la Biodiversidad, Centro de Estudios Conservacionistas-CECON-, Facultad de Ciencias Químicas y Farmacia, Universidad de San Carlos de Guatemala, Avenida La Reforma 0-63 zona 10, 01010, Ciudad de Guatemala, Guatemala
| | - Lucie M Baltz
- General Zoology, Institute for Biology, Martin-Luther University Halle-Wittenberg, Hoher Weg 8, 06120, Halle (Saale), Germany
| | - Julia Osterman
- General Zoology, Institute for Biology, Martin-Luther University Halle-Wittenberg, Hoher Weg 8, 06120, Halle (Saale), Germany
- Helmholtz Centre for Environmental Research-UFZ Leipzig, ESCALATE, Department of Computational Landscape Ecology, Permoserstrasse 15, 04318, Leipzig, Germany
| | - Robert J Paxton
- General Zoology, Institute for Biology, Martin-Luther University Halle-Wittenberg, Hoher Weg 8, 06120, Halle (Saale), Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103, Leipzig, Germany
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13
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Vieira KIC, Werneck HDA, Santos Júnior JED, Flores DSDS, Serrão JE, Campos LADO, Resende HC. Bees and the Environmental Impact of the Rupture of the Fundão Dam. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2020; 16:631-635. [PMID: 32406986 DOI: 10.1002/ieam.4288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/26/2019] [Accepted: 05/04/2020] [Indexed: 06/11/2023]
Abstract
The environmental consequences associated with the Fundão tailings dam failure in Mariana, Minas Gerais, Brazil on 5 November 2015 are still being investigated. Bees are the main pollinators believed to be most affected by the accident because they occur throughout the area affected by the dam rupture and build their nests in the soil. In this study, we evaluated the richness of different bee species in areas affected and not affected by the accident and measured the concentration of different metals on the pollen basket, or corbicula, located on the hind legs of Apis mellifera. Diversity indices were similar and there was no statistical difference in the diversity of bees sampled when comparing the sites affected and not affected by the tailings mud, either before or after the dam rupture. It is possible that the similarity is due to nearby forests that may be serving as areas of refuge. The levels of Al, Cu, Cd, Hg, and Pb in A. mellifera suggest no change in the level of metals in pollen collected by the bees that can be attributed to the rupture of the dam. Integr Environ Assess Manag 2020;16:631-635. © 2020 SETAC.
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Affiliation(s)
- Kamilla Ingred Castelan Vieira
- Laboratory of Conservation Genetics, Department of Management and Conservation of Natural and Agricultural Ecosystems, Federal University of Viçosa-Campus Florestal, Florestal, Minas Gerais, Brazil
| | | | - José Eustáquio Dos Santos Júnior
- Department of General Genetics, Ecology and Evolution/Department of Zoology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Dienny Sthefani da Silva Flores
- Laboratory of Conservation Genetics, Department of Management and Conservation of Natural and Agricultural Ecosystems, Federal University of Viçosa-Campus Florestal, Florestal, Minas Gerais, Brazil
| | - José Eduardo Serrão
- Department of Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | | | - Helder Canto Resende
- Laboratory of Conservation Genetics, Department of Management and Conservation of Natural and Agricultural Ecosystems, Federal University of Viçosa-Campus Florestal, Florestal, Minas Gerais, Brazil
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14
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Lourenço AP, Santos APM, Checon HH, Costa MR, Assis Júnior SL. Cavity-nesting bee communities in areas with different levels of vegetation disturbance. STUDIES ON NEOTROPICAL FAUNA AND ENVIRONMENT 2020. [DOI: 10.1080/01650521.2019.1710334] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Anete P. Lourenço
- Departamento de Ciências Biológicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Brazil
| | - Ana Paula M. Santos
- Departamento de Engenharia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Brazil
| | - Hélio H. Checon
- Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, Brazil
- Departamento de Oceanografia Biológica, Instituto Oceanográfico, Universidade de São Paulo, São Paulo, Brazil
| | - Mayra R. Costa
- Departamento de Ciências Biológicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Brazil
| | - Sebastião L. Assis Júnior
- Departamento de Engenharia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Brazil
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15
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Ropars L, Affre L, Schurr L, Flacher F, Genoud D, Mutillod C, Geslin B. Land cover composition, local plant community composition and honeybee colony density affect wild bee species assemblages in a Mediterranean biodiversity hot-spot. ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 2020. [DOI: 10.1016/j.actao.2020.103546] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Torné‐Noguera A, Arnan X, Rodrigo A, Bosch J. Spatial variability of hosts, parasitoids and their interactions across a homogeneous landscape. Ecol Evol 2020; 10:3696-3705. [PMID: 32313628 PMCID: PMC7160165 DOI: 10.1002/ece3.6158] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 02/07/2020] [Accepted: 02/12/2020] [Indexed: 11/07/2022] Open
Abstract
Species assemblages and their interactions vary through space, generating diversity patterns at different spatial scales. Here, we study the local-scale spatial variation of a cavity-nesting bee and wasp community (hosts), their nest associates (parasitoids), and the resulting antagonistic network over a continuous and homogeneous habitat. To obtain bee/wasp nests, we placed trap-nests at 25 sites over a 32 km2 area. We obtained 1,541 nests (4,954 cells) belonging to 40 host species and containing 27 parasitoid species. The most abundant host species tended to have higher parasitism rate. Community composition dissimilarity was relatively high for both hosts and parasitoids, and the main component of this variability was species turnover, with a very minor contribution of ordered species loss (nestedness). That is, local species richness tended to be similar across the study area and community composition tended to differ between sites. Interestingly, the spatial matching between host and parasitoid composition was low. Host β-diversity was weakly (positively) but significantly related to geographic distance. On the other hand, parasitoid and host-parasitoid interaction β-diversities were not significantly related to geographic distance. Interaction β-diversity was even higher than host and parasitoid β-diversity, and mostly due to species turnover. Interaction rewiring between plots and between local webs and the regional metaweb was very low. In sum, species composition was rather idiosyncratic to each site causing a relevant mismatch between hosts and parasitoid composition. However, pairs of host and parasitoid species tended to interact similarly wherever they co-occurred. Our results additionally show that interaction β-diversity is better explained by parasitoid than by host β-diversity. We discuss the importance of identifying the sources of variation to understand the drivers of the observed heterogeneity.
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Affiliation(s)
| | | | - Anselm Rodrigo
- CREAFCerdanyola del VallèsSpain
- Universitat Autònoma de BarcelonaCerdanyola del VallèsSpain
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17
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Steinert M, Sydenham M, Eldegard K, Moe S. Conservation of solitary bees in power-line clearings: Sustained increase in habitat quality through woody debris removal. Glob Ecol Conserv 2020. [DOI: 10.1016/j.gecco.2019.e00823] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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18
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Herrera CM. Flower traits, habitat, and phylogeny as predictors of pollinator service: a plant community perspective. ECOL MONOGR 2020. [DOI: 10.1002/ecm.1402] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Carlos M. Herrera
- Estación Biológica de Doñana Consejo Superior de Investigaciones Científicas Avenida Americo Vespucio 26 E‐41092 Sevilla Spain
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19
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Predicting changes in bee assemblages following state transitions at North American dryland ecotones. Sci Rep 2020; 10:708. [PMID: 31959812 PMCID: PMC6971228 DOI: 10.1038/s41598-020-57553-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Accepted: 12/26/2019] [Indexed: 11/11/2022] Open
Abstract
Drylands worldwide are experiencing ecosystem state transitions: the expansion of some ecosystem types at the expense of others. Bees in drylands are particularly abundant and diverse, with potential for large compositional differences and seasonal turnover across ecotones. To better understand how future ecosystem state transitions may influence bees, we compared bee assemblages and their seasonality among sites at the Sevilleta National Wildlife Refuge (NM, USA) that represent three dryland ecosystem types (and two ecotones) of the southwestern U.S. (Plains grassland, Chihuahuan Desert grassland, and Chihuahuan Desert shrubland). Using passive traps, we caught bees during two-week intervals from March–October, 2002–2014. The resulting dataset included 302 bee species and 56 genera. Bee abundance, composition, and diversity differed among ecosystems, indicating that future state transitions could alter bee assemblage composition in our system. We found strong seasonal bee species turnover, suggesting that bee phenological shifts may accompany state transitions. Common species drove the observed trends, and both specialist and generalist bee species were indicators of ecosystem types or months; these species could be sentinels of community-wide responses to future shifts. Our work suggests that predicting the consequences of global change for bee assemblages requires accounting for both within-year and among-ecosystem variation.
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Coulin C, Aizen MA, Garibaldi LA. Contrasting responses of plants and pollinators to woodland disturbance. AUSTRAL ECOL 2019. [DOI: 10.1111/aec.12771] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Carolina Coulin
- CONICET-Instituto de Investigaciones en Recursos Naturales; Agroecología y Desarrollo Rural (IRNAD); Sede Andina, Universidad Nacional de Río Negro; Bariloche Argentina
| | - Marcelo A. Aizen
- CONICET-Laboratorio Ecotono; INIBIOMA; Universidad Nacional del Comahue; Bariloche Argentina
| | - Lucas A. Garibaldi
- CONICET-Instituto de Investigaciones en Recursos Naturales; Agroecología y Desarrollo Rural (IRNAD); Sede Andina, Universidad Nacional de Río Negro; Bariloche Argentina
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Santamaría S, Sánchez AM, López-Angulo J, Ornosa C, Mola I, Escudero A. Landscape effects on pollination networks in Mediterranean gypsum islands. PLANT BIOLOGY (STUTTGART, GERMANY) 2018; 20 Suppl 1:184-194. [PMID: 28718203 DOI: 10.1111/plb.12602] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 07/11/2017] [Indexed: 06/07/2023]
Abstract
Habitat fragmentation is a major driver of global change that has operated historically on Mediterranean ecosystems. However, more needs to be understood about how fragmentation influences ecological interactions, particularly pollination. Gypsum outcrops are historically fragmented Mediterranean habitats and settings for the evolution of many endangered soil-specialist plants with narrow ranges. In this study, we aimed to determine how fragmentation (area and connectivity) affects: (i) pollinator community composition and (ii) structural properties of pollination networks; and whether there are differences in the effects of fragmentation on: (iii) the number of interactions and visits among pollinator functional groups; and (iv) the number of interactions and specialisation degree between soil-specialist and soil-generalist plants. We characterised the degree of fragmentation and the pollination network structures in 12 gypsum habitat fragments embedded in a cropland matrix during two consecutive years. We found significant relationships between fragmentation and network structure. The effects of fragmentation differed among pollinator functional groups, but not between soil-specialist and soil-generalist plants, in terms of number of interactions. However, the relatively higher pollinator specialisation of soil-specialist plants suggested greater dependence on pollinators. Inter-annual variations in the network structures demonstrated the importance of temporal replication. The observed patterns related to the landscape structure and pollination at both the network and species levels provide insights into the key ecological processes in gypsum islands. These findings may help to identify the potential drivers of species persistence, especially for endangered soil-specialist plants with narrow ranges in a changing scenario with exacerbated habitat fragmentation.
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Affiliation(s)
- S Santamaría
- Department of Biology and Geology, Rey Juan Carlos University, Madrid, Spain
| | - A M Sánchez
- Department of Biology and Geology, Rey Juan Carlos University, Madrid, Spain
| | - J López-Angulo
- Department of Biology and Geology, Rey Juan Carlos University, Madrid, Spain
| | - C Ornosa
- Department of Zoology and Physical Anthropology, Complutense University of Madrid, Madrid, Spain
| | - I Mola
- Obrascón Huarte Lain, S.A., Madrid, Spain
| | - A Escudero
- Department of Biology and Geology, Rey Juan Carlos University, Madrid, Spain
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Stange E, Zulian G, Rusch G, Barton D, Nowell M. Ecosystem services mapping for municipal policy: ESTIMAP and zoning for urban beekeeping. ONE ECOSYSTEM 2017. [DOI: 10.3897/oneeco.2.e14014] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Modelling patterns of pollinator species richness and diversity using satellite image texture. PLoS One 2017; 12:e0185591. [PMID: 28973006 PMCID: PMC5626433 DOI: 10.1371/journal.pone.0185591] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 09/17/2017] [Indexed: 11/19/2022] Open
Abstract
Assessing species richness and diversity on the basis of standardised field sampling effort represents a cost- and time-consuming method. Satellite remote sensing (RS) can help overcome these limitations because it facilitates the collection of larger amounts of spatial data using cost-effective techniques. RS information is hence increasingly analysed to model biodiversity across space and time. Here, we focus on image texture measures as a proxy for spatial habitat heterogeneity, which has been recognized as an important determinant of species distributions and diversity. Using bee monitoring data of four years (2010–2013) from six 4 × 4 km field sites across Central Germany and a multimodel inference approach we test the ability of texture features derived from Landsat-TM imagery to model local pollinator biodiversity. Textures were shown to reflect patterns of bee diversity and species richness to some extent, with the first-order entropy texture and terrain roughness being the most relevant indicators. However, the texture measurements accounted for only 3–5% of up to 60% of the variability that was explained by our final models, although the results are largely consistent across different species groups (bumble bees, solitary bees). While our findings provide indications in support of the applicability of satellite imagery textures for modeling patterns of bee biodiversity, they are inconsistent with the high predictive power of texture metrics reported in previous studies for avian biodiversity. We assume that our texture data captured mainly heterogeneity resulting from landscape configuration, which might be functionally less important for wild bees than compositional diversity of plant communities. Our study also highlights the substantial variability among taxa in the applicability of texture metrics for modelling biodiversity.
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Plascencia M, Philpott SM. Floral abundance, richness, and spatial distribution drive urban garden bee communities. BULLETIN OF ENTOMOLOGICAL RESEARCH 2017; 107:658-667. [PMID: 28245886 DOI: 10.1017/s0007485317000153] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In urban landscapes, gardens provide refuges for bee diversity, but conservation potential may depend on local and landscape features. Foraging and population persistence of bee species, as well as overall pollinator community structure, may be supported by the abundance, richness, and spatial distribution of floral resources. Floral resources strongly differ in urban gardens. Using hand netting and pan traps to survey bees, we examined whether abundance, richness, and spatial distribution of floral resources, as well as ground cover and garden landscape surroundings influence bee abundance, species richness, and diversity on the central coast of California. Differences in floral abundance and spatial distribution, as well as urban cover in the landscape, predicted different bee community variables. Abundance of all bees and of honeybees (Apis mellifera) was lower in sites with more urban land cover surrounding the gardens. Honeybee abundance was higher in sites with patchy floral resources, whereas bee species richness and bee diversity was higher in sites with more clustered floral resources. Surprisingly, bee species richness and bee diversity was lower in sites with very high floral abundance, possibly due to interactions with honeybees. Other studies have documented the importance of floral abundance and landscape surroundings for bees in urban gardens, but this study is the first to document that the spatial arrangement of flowers strongly predicts bee abundance and richness. Based on these findings, it is likely that garden managers may promote bee conservation by managing for floral connectivity and abundance within these ubiquitous urban habitats.
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Affiliation(s)
- M Plascencia
- Department of Ecology and Evolutionary Biology,University of California,Santa Cruz,Santa Cruz,CA 95064,USA
| | - S M Philpott
- Department of Environmental Studies,University of California,Santa Cruz,Santa Cruz,CA 95064,USA
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Metamorphosis is induced by food absence rather than a critical weight in the solitary bee, Osmia lignaria. Proc Natl Acad Sci U S A 2017; 114:10924-10929. [PMID: 28973885 DOI: 10.1073/pnas.1703008114] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Body size is an important phenotypic trait that correlates with performance and fitness. For determinate growing insects, body size variation is determined by growth rate and the mechanisms that stop growth at the end of juvenile growth. Endocrine mechanisms regulate growth cessation, and their relative timing along development shapes phenotypic variation in body size and development time. Larval insects are generally hypothesized to initiate metamorphosis once they attain a critical weight. However, the mechanisms underlying the critical weight have not been resolved even for well-studied insect species. More importantly, critical weights may or may not be generalizable across species. In this study, we characterized the developmental aspects of size regulation in the solitary bee, Osmia lignaria We demonstrate that starvation cues metamorphosis in O. lignaria and that a critical weight does not exist in this species. Larvae initiated pupation <24 h after food was absent. However, even larvae fed ad libitum eventually underwent metamorphosis, suggesting that some secondary mechanism regulates metamorphosis when provisions are not completely consumed. We show that metamorphosis could be induced by precocene treatment in the presence of food, which suggests that this decision is regulated through juvenile hormone signaling. Removing food at different larval masses produced a 10-fold difference in mass between smallest and largest adults. We discuss the implications of body size variation for insect species that are provided with a fixed quantity of provisions, including many bees which have economic value as pollinators.
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Traveset A, Castro-Urgal R, Rotllàn-Puig X, Lázaro A. Effects of habitat loss on the plant-flower visitor network structure of a dune community. OIKOS 2017. [DOI: 10.1111/oik.04154] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anna Traveset
- Mediterranean Inst. for Advanced Studies - Biodiversity and Conservation, c/Miquel Marqu- s 21, ES-07190 Esporles; Mallorca Balearic Islands Spain
| | - Rocío Castro-Urgal
- Mediterranean Inst. for Advanced Studies - Biodiversity and Conservation, c/Miquel Marqu- s 21, ES-07190 Esporles; Mallorca Balearic Islands Spain
| | - Xavier Rotllàn-Puig
- Mediterranean Inst. for Advanced Studies - Biodiversity and Conservation, c/Miquel Marqu- s 21, ES-07190 Esporles; Mallorca Balearic Islands Spain
| | - Amparo Lázaro
- Mediterranean Inst. for Advanced Studies - Biodiversity and Conservation, c/Miquel Marqu- s 21, ES-07190 Esporles; Mallorca Balearic Islands Spain
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Mensah S, Veldtman R, Seifert T. Potential supply of floral resources to managed honey bees in natural mistbelt forests. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 189:160-167. [PMID: 28038411 DOI: 10.1016/j.jenvman.2016.12.033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 12/11/2016] [Accepted: 12/12/2016] [Indexed: 06/06/2023]
Abstract
Honey bees play a vital role in the pollination of flowers in many agricultural systems, while providing honey through well managed beekeeping activities. Managed honey bees rely on the provision of pollen and nectar for their survival and productivity. Using data from field plot inventories in natural mistbelt forests, we (1) assessed the diversity and relative importance of honey bee plants, (2) explored the temporal availability of honey bee forage (nectar and pollen resources), and (3) elucidated how plant diversity (bee plant richness and overall plant richness) influenced the amount of forage available (production). A forage value index was defined on the basis of species-specific nectar and pollen values, and expected flowering period. Up to 50% of the overall woody plant richness were found to be honey bee plant species, with varying flowering period. As expected, bee plant richness increased with overall plant richness. Interestingly, bee plants' flowering period was spread widely over a year, although the highest potential of forage supply was observed during the last quarter. We also found that only few honey bee plant species contributed 90 percent of the available forage. Surprisingly, overall plant richness did not significantly influence the bee forage value. Rather, bee plant species richness showed significant and greater effect. The results of this study suggest that mistbelt forests can contribute to increase the spatial and temporal availability of diverse floral resources for managed honey bees. Conservation efforts must be specifically oriented towards honey bee plant species in mistbelt forests to preserve and enhance their potential to help maintain honey bee colonies. The implications for forest management, beekeeping activities and pollination-based agriculture were discussed.
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Affiliation(s)
- Sylvanus Mensah
- Department of Forest and Wood Science, Stellenbosch University, Private Bag X1, 7602 Matieland, South Africa; Laboratoire de Biomathématiques et d'Estimations Forestières, Université d'Abomey-Calavi, Cotonou 03 BP 2819, Bénin.
| | - Ruan Veldtman
- South African National Biodiversity Institute, Kirstenbosch Research Centre, Private Bag X7, 7735 Claremont, South Africa; Department of Conservation Ecology and Entomology, Stellenbosch University, Private Bag X1, 7602 Matieland, South Africa
| | - Thomas Seifert
- Department of Forest and Wood Science, Stellenbosch University, Private Bag X1, 7602 Matieland, South Africa
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Skogen KA, Jogesh T, Hilpman ET, Todd SL, Rhodes MK, Still SM, Fant JB. Land-use change has no detectable effect on reproduction of a disturbance-adapted, hawkmoth-pollinated plant species. AMERICAN JOURNAL OF BOTANY 2016; 103:1950-1963. [PMID: 27803000 DOI: 10.3732/ajb.1600302] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 09/22/2016] [Indexed: 06/06/2023]
Abstract
PREMISE OF THE STUDY Land-use change is cited as a primary driver of global biodiversity loss, with myriad consequences for species, populations, and ecosystems. However, few studies have examined its impact on species interactions, particularly pollination. Furthermore, when the effects of land-use change on pollination have been studied, the focus has largely been on species pollinated by diurnal pollinators, namely, bees and butterflies. Here, we focus on Oenothera harringtonii, a night-flowering, disturbance-adapted species that has experienced a range-wide gradient of land-use change. We tested the hypothesis that the negative impacts of land-use change are mitigated by long-distance pollination. METHODS Our study included both temporal (4 yr) and spatial (19 populations range-wide, and 1, 2, and 5 km from the population center) data, providing a comprehensive understanding of the role of land-use change on pollination biology and reproduction. KEY RESULTS We first confirmed that O. harringtonii is self-incompatible and reliant on pollinators for reproduction. We then showed that hawkmoths (primarily Hyles lineata) are highly reliable and effective pollinators in both space and time. Unlike other studies, we did not detect an effect of population size, increased isolation, or a reduction in suitable habitat in areas with evidence of land-use change on pollination (visitation, pollen removal and deposition). Furthermore, the proportion of suitable habitat and other fragmentation metrics examined were not associated with population size or density in this plant species. CONCLUSIONS We conclude that nocturnal pollination of Oenothera harringtonii via hawkmoths is robust to the negative impacts of land-use change.
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Affiliation(s)
- Krissa A Skogen
- Chicago Botanic Garden 1000 Lake Cook Road, Glencoe, Illinois 60022 USA
| | - Tania Jogesh
- Chicago Botanic Garden 1000 Lake Cook Road, Glencoe, Illinois 60022 USA
| | - Evan T Hilpman
- Chicago Botanic Garden 1000 Lake Cook Road, Glencoe, Illinois 60022 USA
- Washingtion State University, School of Biological Sciences, P.O. Box 644236, Pullman, Washington 99164 USA
| | - Sadie L Todd
- Chicago Botanic Garden 1000 Lake Cook Road, Glencoe, Illinois 60022 USA
- Iowa Department of Agriculture and Land Stewardship, 2230 S. Ankeny Boulevard, Ankeny, Iowa 50023 USA
| | - Matthew K Rhodes
- Chicago Botanic Garden 1000 Lake Cook Road, Glencoe, Illinois 60022 USA
- Department of Ecology and Evolutionary Biology, University of Arizona, P.O. Box 210088, Tucson, Arizona 85721 USA
| | - Shannon M Still
- Chicago Botanic Garden 1000 Lake Cook Road, Glencoe, Illinois 60022 USA
- University of California Davis Arboretum and Public Garden, One Shields Avenue, Davis, California 95616 USA
| | - Jeremie B Fant
- Chicago Botanic Garden 1000 Lake Cook Road, Glencoe, Illinois 60022 USA
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Geslin B, Le Féon V, Folschweiller M, Flacher F, Carmignac D, Motard E, Perret S, Dajoz I. The proportion of impervious surfaces at the landscape scale structures wild bee assemblages in a densely populated region. Ecol Evol 2016; 6:6599-6615. [PMID: 27777733 PMCID: PMC5058531 DOI: 10.1002/ece3.2374] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 07/07/2016] [Accepted: 07/15/2016] [Indexed: 11/21/2022] Open
Abstract
Given the predicted expansion of cities throughout the world, understanding the effect of urbanization on bee fauna is a major issue for the conservation of bees. The aim of this study was to understand how urbanization affects wild bee assemblages along a gradient of impervious surfaces and to determine the influence of landscape composition and floral resource availability on these assemblages. We chose 12 sites with a proportion of impervious surfaces (soil covered by parking, roads, and buildings) ranging from 0.06% to 64.31% within a 500 m radius. We collected using pan trapping and estimated the landscape composition of the sites within a 500 m radius and the species richness of plant assemblages within a 200 m radius. We collected 1104 bees from 74 species. The proportion of impervious surfaces at the landscape scale had a negative effect on wild bee abundance and species richness, whereas local flower composition had no effect. Ground-nesting bees were particularly sensitive to the urbanization gradient. This study provides new evidences of the impact of urbanization on bee assemblages and the proportion of impervious surfaces at the landscape scale emerged as a key factor that drives those assemblages.
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Affiliation(s)
- Benoît Geslin
- CNRS, IRDInstitut Méditerranéen de Biodiversité et d'Ecologie Marine et Continentale (IMBE) Aix Marseille UniversitéAvignon Université Pôle St Jérôme av. Escadrille N. Niemen13397Marseille Cedex 20France
- CNRS, UMR 7618iEES‐ParisF‐75005ParisFrance
| | - Violette Le Féon
- INRA, UMR 406 Abeilles et EnvironnementINRASite AgroparcF‐84914Avignon Cedex 9France
| | | | - Floriane Flacher
- CNRS, UMR 7618iEES‐ParisF‐75005ParisFrance
- Université ParisDiderot‐7F‐75013ParisFrance
| | | | - Eric Motard
- CNRS, UMR 7618iEES‐ParisF‐75005ParisFrance
- Université Pierre et Marie Curie‐6F‐75005ParisFrance
| | - Samuel Perret
- CEREEP Ecotron ÎleDeFranceUMS CNRS 3194Saint‐Pierre‐lès‐NemoursFrance
| | - Isabelle Dajoz
- CNRS, UMR 7618iEES‐ParisF‐75005ParisFrance
- Université Pierre et Marie Curie‐6F‐75005ParisFrance
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Torné-Noguera A, Rodrigo A, Osorio S, Bosch J. Collateral effects of beekeeping: Impacts on pollen-nectar resources and wild bee communities. Basic Appl Ecol 2016. [DOI: 10.1016/j.baae.2015.11.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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31
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Le Féon V, Poggio SL, Torretta JP, Bertrand C, Molina GAR, Burel F, Baudry J, Ghersa CM. Diversity and life-history traits of wild bees (Insecta: Hymenoptera) in intensive agricultural landscapes in the Rolling Pampa, Argentina. J NAT HIST 2015. [DOI: 10.1080/00222933.2015.1113315] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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32
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Nawaz S, Yuan Y. Computational pathology: Exploring the spatial dimension of tumor ecology. Cancer Lett 2015; 380:296-303. [PMID: 26592351 DOI: 10.1016/j.canlet.2015.11.018] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 11/09/2015] [Accepted: 11/10/2015] [Indexed: 02/06/2023]
Abstract
Tumors are evolving ecosystems where cancer subclones and the microenvironment interact. This is analogous to interaction dynamics between species in their natural habitats, which is a prime area of study in ecology. Spatial statistics are frequently used in ecological studies to infer complex relations including predator-prey, resource dependency and co-evolution. Recently, the emerging field of computational pathology has enabled high-throughput spatial analysis by using image processing to identify different cell types and their locations within histological tumor samples. We discuss how these data may be analyzed with spatial statistics used in ecology to reveal patterns and advance our understanding of ecological interactions occurring among cancer cells and their microenvironment.
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Affiliation(s)
- Sidra Nawaz
- Centre for Molecular Pathology, Institute of Cancer Research, London SM2 5NG, UK; Centre for Evolution and Cancer, Institute of Cancer Research, London SM2 5NG, UK; Division of Molecular Pathology, The Institute of Cancer Research, London SM2 5NG, UK
| | - Yinyin Yuan
- Centre for Molecular Pathology, Institute of Cancer Research, London SM2 5NG, UK; Centre for Evolution and Cancer, Institute of Cancer Research, London SM2 5NG, UK; Division of Molecular Pathology, The Institute of Cancer Research, London SM2 5NG, UK.
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Fernández JD, Lorite J, Bosch J, Gómez JM. Variation in the reproductive success of a narrow endemic plant: Effects of geographical distribution, abiotic conditions and pollinator community composition. Basic Appl Ecol 2015. [DOI: 10.1016/j.baae.2015.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Giannini TC, Tambosi LR, Acosta AL, Jaffé R, Saraiva AM, Imperatriz-Fonseca VL, Metzger JP. Safeguarding Ecosystem Services: A Methodological Framework to Buffer the Joint Effect of Habitat Configuration and Climate Change. PLoS One 2015; 10:e0129225. [PMID: 26091014 PMCID: PMC4475073 DOI: 10.1371/journal.pone.0129225] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 05/06/2015] [Indexed: 11/18/2022] Open
Abstract
Ecosystem services provided by mobile agents are increasingly threatened by the loss and modification of natural habitats and by climate change, risking the maintenance of biodiversity, ecosystem functions, and human welfare. Research oriented towards a better understanding of the joint effects of land use and climate change over the provision of specific ecosystem services is therefore essential to safeguard such services. Here we propose a methodological framework, which integrates species distribution forecasts and graph theory to identify key conservation areas, which if protected or restored could improve habitat connectivity and safeguard ecosystem services. We applied the proposed framework to the provision of pollination services by a tropical stingless bee (Melipona quadrifasciata), a key pollinator of native flora from the Brazilian Atlantic Forest and important agricultural crops. Based on the current distribution of this bee and that of the plant species used to feed and nest, we projected the joint distribution of bees and plants in the future, considering a moderate climate change scenario (following IPPC). We then used this information, the bee’s flight range, and the current mapping of Atlantic Forest remnants to infer habitat suitability and quantify local and regional habitat connectivity for 2030, 2050 and 2080. Our results revealed north to south and coastal to inland shifts in the pollinator distribution during the next 70 years. Current and future connectivity maps unraveled the most important corridors, which if protected or restored, could facilitate the dispersal and establishment of bees during distribution shifts. Our results also suggest that coffee plantations from eastern São Paulo and southern Minas Gerais States could suffer a pollinator deficit in the future, whereas pollination services seem to be secured in southern Brazil. Landowners and governmental agencies could use this information to implement new land use schemes. Overall, our proposed methodological framework could help design novel conservational and agricultural practices that can be crucial to conserve ecosystem services by buffering the joint effect of habitat configuration and climate change.
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Affiliation(s)
- Tereza C. Giannini
- Department of Ecology, Institute of Bioscience, University of Sao Paulo (USP), R. do Matao 321, 05508–090, Sao Paulo, Sao Paulo, Brazil
- Computation and Digital Systems, Engineering School, University of Sao Paulo (USP), Av. Prof. Luciano Gualberto 380, 05508–010, Sao Paulo, Sao Paulo, Brazil
- Vale Institute of Technology Sustainable Development, Rua Boaventura da Silva 955, 66055–090, Belém, Pará, Brazil
- * E-mail:
| | - Leandro R. Tambosi
- Department of Ecology, Institute of Bioscience, University of Sao Paulo (USP), R. do Matao 321, 05508–090, Sao Paulo, Sao Paulo, Brazil
| | - André L. Acosta
- Department of Ecology, Institute of Bioscience, University of Sao Paulo (USP), R. do Matao 321, 05508–090, Sao Paulo, Sao Paulo, Brazil
| | - Rodolfo Jaffé
- Department of Ecology, Institute of Bioscience, University of Sao Paulo (USP), R. do Matao 321, 05508–090, Sao Paulo, Sao Paulo, Brazil
| | - Antonio M. Saraiva
- Computation and Digital Systems, Engineering School, University of Sao Paulo (USP), Av. Prof. Luciano Gualberto 380, 05508–010, Sao Paulo, Sao Paulo, Brazil
| | - Vera L. Imperatriz-Fonseca
- Department of Ecology, Institute of Bioscience, University of Sao Paulo (USP), R. do Matao 321, 05508–090, Sao Paulo, Sao Paulo, Brazil
- Vale Institute of Technology Sustainable Development, Rua Boaventura da Silva 955, 66055–090, Belém, Pará, Brazil
| | - Jean Paul Metzger
- Department of Ecology, Institute of Bioscience, University of Sao Paulo (USP), R. do Matao 321, 05508–090, Sao Paulo, Sao Paulo, Brazil
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MacIvor JS, Packer L. 'Bee hotels' as tools for native pollinator conservation: a premature verdict? PLoS One 2015; 10:e0122126. [PMID: 25785609 PMCID: PMC4364699 DOI: 10.1371/journal.pone.0122126] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Accepted: 02/07/2015] [Indexed: 11/19/2022] Open
Abstract
Society is increasingly concerned with declining wild bee populations. Although most bees nest in the ground, considerable effort has centered on installing ‘bee hotels’—also known as nest boxes or trap nests—which artificially aggregate nest sites of above ground nesting bees. Campaigns to ‘save the bees’ often promote these devices despite the absence of data indicating they have a positive effect. From a survey of almost 600 bee hotels set up over a period of three years in Toronto, Canada, introduced bees nested at 32.9% of sites and represented 24.6% of more than 27,000 total bees and wasps recorded (47.1% of all bees recorded). Native bees were parasitized more than introduced bees and females of introduced bee species provisioned nests with significantly more female larva each year. Native wasps were significantly more abundant than both native and introduced bees and occupied almost 3/4 of all bee hotels each year; further, introduced wasps were the only group to significantly increase in relative abundance year over year. More research is needed to elucidate the potential pitfalls and benefits of using bee hotels in the conservation and population dynamics of wild native bees.
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Affiliation(s)
- J. Scott MacIvor
- Biology Department, York University, Toronto, Ontario, Canada
- * E-mail:
| | - Laurence Packer
- Biology Department, York University, Toronto, Ontario, Canada
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