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Wu GL, Fang H, Cui Z, Zhao J. Warming-driven indirect effects on alpine grasslands: short-term gravel encroachment rapidly reshapes community structure and reduces community stability. Oecologia 2023:10.1007/s00442-023-05393-y. [PMID: 37258693 DOI: 10.1007/s00442-023-05393-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 05/23/2023] [Indexed: 06/02/2023]
Abstract
The community stability is the main ability to resist and be resilient to climate changes. In a world of climate warming and melting glaciers, alpine gravel encroachment was occurring universally and threatening hillside grassland ecosystem. Gravel encroachment caused by climate warming and glacial melting may alter community structure and community stability in alpine meadow. Yet, the effects of climate warming-induced gravel encroachment on grassland communities are unknown. Here, a 1-year short-term field experiment was conducted to explore the early stage drive process of gravel encroachment on community structure and stability at four different gravel encroachment levels 0%, 30%, 60%, and 90% gravel coverage at an alpine meadow on the Qinghai Tibetan Plateau, by analyzing the changes of dominant species stability and species asynchrony to the simulated gravel encroachment processes. Gravel encroachment rapidly changed the species composition and species ranking of alpine meadow plant community in a short period of time. Specifically, community stability of alpine meadow decreased by 61.78-79.48%, which may be due to the reduced dominant species stability and species asynchrony. Species asynchrony and dominant species stability were reduced by 2.65-17.39% and 46.51-67.97%, respectively. The results of this study demonstrate that gravel encroachment presents a severe negative impact on community structure and stability of alpine meadow in the short term, the longer term and comprehensive study should be conducted to accurate prediction of global warming-induced indirect effects on alpine grassland ecosystems.
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Affiliation(s)
- Gao-Lin Wu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, No. 26, Xinong Road, Yangling, 712100, China.
- Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resource, Yangling, 712100, China.
- CAS Center for Excellence in Quaternary Science and Global Change, Xi'an, 710061, China.
| | - Hui Fang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, No. 26, Xinong Road, Yangling, 712100, China
| | - Zeng Cui
- Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resource, Yangling, 712100, China
| | - Jingxue Zhao
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, 730000, China
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52
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Rojas-Castillo OA, Kepfer-Rojas S, Vargas N, Jacobsen D. Forest buffer-strips mitigate the negative impact of oil palm plantations on stream communities. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 873:162259. [PMID: 36801315 DOI: 10.1016/j.scitotenv.2023.162259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/07/2023] [Accepted: 02/11/2023] [Indexed: 06/18/2023]
Abstract
The global area cultivated with oil palm has doubled in the past two decades, causing deforestation, land-use change, freshwater pollution, and species loss in tropical ecosystems worldwide. Despite the palm-oil industry been linked to severe deterioration of freshwater ecosystems, most studies have focused on terrestrial environments, while freshwaters have been significantly less studied. We evaluated these impacts by contrasting freshwater macroinvertebrate communities and habitat conditions in 19 streams from primary forests (7), grazing lands (6), and oil palm plantations (6). In each stream, we measured environmental characteristics, e.g., habitat composition, canopy cover, substrate, water temperature, and water quality; and we identified and quantified the assemblage of macroinvertebrates. Streams in oil palm plantations lacking riparian forest strips showed warmer and more variable temperatures, higher turbidity, lower silica content, and poorer macroinvertebrate taxon richness than primary forests. Grazing lands showed higher conductivity and temperature, and lower dissolved oxygen and macroinvertebrate taxon richness than primary forests. In contrast, streams in oil palm plantations that conserved a riparian forest, showed a substrate composition, temperature, and canopy cover more similar to the ones in primary forests. These habitat improvements by riparian forests in the plantations increased macroinvertebrate taxon richness and maintained a community resembling more the one in primary forests. Therefore, the conversion of grazing lands (instead of primary forests) to oil palm plantations can increase freshwater taxon richness only if riparian native forests are safeguarded.
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Affiliation(s)
- O A Rojas-Castillo
- Freshwater Biology Section, Department of Biology, University of Copenhagen, Universitetsparken 4, third floor, 2100 Ø, CPH, Denmark; Escuela de Biología, Universidad de San Carlos, Ciudad Universitaria zona 12, Edificios T-10 y T-12, Guatemala.
| | - S Kepfer-Rojas
- Forest, Nature and Biomass Section, Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej, 23 1958 Frederiksberg C, Denmark
| | - N Vargas
- Centro de Estudios del Mar y Acuicultura, Universidad de San Carlos, Ciudad Universitaria zona 12, Edificio T-14, Guatemala; Escuela de Biología, Universidad de San Carlos, Ciudad Universitaria zona 12, Edificios T-10 y T-12, Guatemala
| | - D Jacobsen
- Freshwater Biology Section, Department of Biology, University of Copenhagen, Universitetsparken 4, third floor, 2100 Ø, CPH, Denmark
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53
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Kobayashi Y, El-Wali M, Guðmundsson H, Guðmundsdóttir EE, Friðjónsson ÓH, Karlsson EN, Roitto M, Tuomisto HL. Life-cycle assessment of yeast-based single-cell protein production with oat processing side-stream. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 873:162318. [PMID: 36805067 DOI: 10.1016/j.scitotenv.2023.162318] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/13/2023] [Accepted: 02/14/2023] [Indexed: 06/18/2023]
Abstract
Production of fish meal and plant-based feed proteins continues to increase to meet the growing demand for seafood, leading to impacts on marine and terrestrial ecosystems. Microbial proteins such as single-cell proteins (SCPs) have been introduced as feed alternatives since they can replace current fish feed ingredients, e.g., soybean, which are associated with negative environmental impacts. Microbial protein production also enables utilization of grain processing side-streams as feedstock sources. This study assesses the environmental impacts of yeast-based SCP using oat side-stream as feedstock (OS-SCP). Life-cycle assessment with a cradle-to-gate approach was used to quantify global warming, freshwater eutrophication, marine eutrophication, terrestrial acidification, land use, and water consumption of OS-SCP production in Finland. Dried and wet side-streams of oat were compared with each other to identify differences in energy consumption and transportation effects. Sensitivity analysis was performed to examine the difference in impacts at various locations and fermentation times. Benchmarking was used to evaluate the environmental impacts of OS-SCP and other feed products, including both conventional and novel protein products. Results highlight the importance of energy sources in quantifying the environmental performance of OS-SCP production. OS-SCP produced with dried side-streams resulted in higher global warming (16.3 %) and water consumption (7.5 %) than OS-SCP produced from wet side-streams, reflecting the energy and water requirements for the drying process. Compared with conventional products, such as soy protein concentrates, OS-SCP resulted in 61 % less land use, while exacerbating the environmental impacts in all the other categories. OS-SCP had more impact on global warming (205-754 %), water consumption (166-1401 %), freshwater eutrophication (118-333 %), and terrestrial acidification (85-340 %) than other novel products, including yeast protein concentrate, methanotrophic bacterial SCP, and insect meal, while lowering global warming (11 %) and freshwater eutrophication (20 %) compared with dry microalgae biomass.
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Affiliation(s)
- Yumi Kobayashi
- Department of Agricultural Sciences, Faculty of Agriculture and Forestry, 27, 00014, University of Helsinki, Finland; Helsinki Institute of Sustainability Science (HELSUS), 4, 00014, University of Helsinki, Finland
| | - Mohammad El-Wali
- Department of Agricultural Sciences, Faculty of Agriculture and Forestry, 27, 00014, University of Helsinki, Finland; Helsinki Institute of Sustainability Science (HELSUS), 4, 00014, University of Helsinki, Finland.
| | | | | | | | | | - Marja Roitto
- Department of Agricultural Sciences, Faculty of Agriculture and Forestry, 27, 00014, University of Helsinki, Finland; Helsinki Institute of Sustainability Science (HELSUS), 4, 00014, University of Helsinki, Finland
| | - Hanna L Tuomisto
- Department of Agricultural Sciences, Faculty of Agriculture and Forestry, 27, 00014, University of Helsinki, Finland; Helsinki Institute of Sustainability Science (HELSUS), 4, 00014, University of Helsinki, Finland; Natural Resources Institute Finland, 2, 00790 Helsinki, Finland
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54
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Tafesse B, Bekele T, Demissew S, Dullo BW, Nemomissa S, Chala D. Conservation implications of mapping the potential distribution of an Ethiopian endemic versatile medicinal plant, Echinops kebericho Mesfin. Ecol Evol 2023; 13:e10061. [PMID: 37168986 PMCID: PMC10164648 DOI: 10.1002/ece3.10061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 04/08/2023] [Accepted: 04/22/2023] [Indexed: 05/13/2023] Open
Abstract
Echinops kebericho is a narrow-range multipurpose medicinal plant confined to Ethiopia. Intense land use change and overharvesting for traditional medicine have resulted in narrow distributions of its populations. It is a threatened species with a decreasing population trend. This study aims to map its potential distribution, which is key to guide conservation efforts and sustainable use. We modeled the potential distribution of E. kebercho using the maximum entropy model (MaxEnt) employing 11 less correlated predictor variables by calibrating the model at two complexity levels and replicating each model 10 times using a cross validation technique. We projected the models into the whole of Ethiopia and produced binary presence-absence maps by classifying the average map from both complexity levels applying three threshold criteria and ensembling the resulting maps into one for the final result. We mapped suitable habitat predicted with high certainty and identified local districts where E. kebericho can be cultivated or introduced to enhance its conservation. We estimated that E.kebercho has about 137,925 km2 of suitable habitat, mainly concentrated in the western highlands of the Ethiopian mountains. Our models at both complexity levels had high average performances, AUC values of 0.925 for the complex model and 0.907 for the simpler model. The variations in performance among the 10 model replicates were not remarkable, an AUC standard deviation of 0.040 for complex and 0.046 for simple model. Although E. kebericho is locally confined, our models predicted that it has a remarkably wider potential distribution area. We recommend introducing E. kebericho to these areas to improve its conservation status and tap its multiple benefits on a sustainable basis. Locally confined threatened plants and animals likely have wider potential distributions than their actual distributions and thus similar methodology can be applied for their conservation.
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Affiliation(s)
- Bedilu Tafesse
- Department of Plant Biology and Biodiversity Management, College of Natural SciencesAddis Ababa UniversityAddis AbabaEthiopia
| | - Tamrat Bekele
- Department of Plant Biology and Biodiversity Management, College of Natural SciencesAddis Ababa UniversityAddis AbabaEthiopia
| | - Sebsebe Demissew
- Department of Plant Biology and Biodiversity Management, College of Natural SciencesAddis Ababa UniversityAddis AbabaEthiopia
| | - Bikila Warkineh Dullo
- Department of Plant Biology and Biodiversity Management, College of Natural SciencesAddis Ababa UniversityAddis AbabaEthiopia
| | - Sileshi Nemomissa
- Department of Plant Biology and Biodiversity Management, College of Natural SciencesAddis Ababa UniversityAddis AbabaEthiopia
| | - Desalegn Chala
- Natural History MuseumUniversity of OsloOsloNorway
- Center for Biodiversity Dynamics in a Changing World (BIOCHANGE), Department of BiologyAarhus UniversityAarhus CDenmark
- Section for Ecoinformatics and Biodiversity, Department of BiologyAarhus UniversityAarhus CDenmark
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55
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Liu D, Semenchuk P, Essl F, Lenzner B, Moser D, Blackburn TM, Cassey P, Biancolini D, Capinha C, Dawson W, Dyer EE, Guénard B, Economo EP, Kreft H, Pergl J, Pyšek P, van Kleunen M, Nentwig W, Rondinini C, Seebens H, Weigelt P, Winter M, Purvis A, Dullinger S. The impact of land use on non-native species incidence and number in local assemblages worldwide. Nat Commun 2023; 14:2090. [PMID: 37045818 PMCID: PMC10097616 DOI: 10.1038/s41467-023-37571-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 03/20/2023] [Indexed: 04/14/2023] Open
Abstract
While the regional distribution of non-native species is increasingly well documented for some taxa, global analyses of non-native species in local assemblages are still missing. Here, we use a worldwide collection of assemblages from five taxa - ants, birds, mammals, spiders and vascular plants - to assess whether the incidence, frequency and proportions of naturalised non-native species depend on type and intensity of land use. In plants, assemblages of primary vegetation are least invaded. In the other taxa, primary vegetation is among the least invaded land-use types, but one or several other types have equally low levels of occurrence, frequency and proportions of non-native species. High land use intensity is associated with higher non-native incidence and frequency in primary vegetation, while intensity effects are inconsistent for other land-use types. These findings highlight the potential dual role of unused primary vegetation in preserving native biodiversity and in conferring resistance against biological invasions.
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Affiliation(s)
- Daijun Liu
- Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030, Vienna, Austria.
| | - Philipp Semenchuk
- Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030, Vienna, Austria
- Department of Arctic Biology, UNIS-The University Centre in Svalbard, 9171, Longyearbyen, Norway
| | - Franz Essl
- Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030, Vienna, Austria
| | - Bernd Lenzner
- Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030, Vienna, Austria
| | - Dietmar Moser
- Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030, Vienna, Austria
| | - Tim M Blackburn
- Research Department of Genetics, Evolution and Environment, University College London, London, UK
- Institute of Zoology, Zoological Society of London, London, UK
| | - Phillip Cassey
- Invasion Science and Wildlife Ecology Lab, School of Biological Sciences, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Dino Biancolini
- Global Mammal Assessment programme, Dipartimento di Biologia e Biotecnologie "Charles Darwin", Sapienza Università di Roma, Rome, Italy
- National Research Council of Italy - Institute for Bioeconomy (CNR-IBE), Via dei Taurini 19, Rome, Italy
| | - César Capinha
- Centro de Estudos Geográficos, Instituto de Geografia e Ordenamento do Território da Universidade de Lisboa, Lisboa, Portugal
- Laboratório Associado TERRA, Tapada da Ajuda, 1349-017, Lisboa, Portugal
| | - Wayne Dawson
- Department of Biosciences, Durham University, South Road, Durham, DH1 3LE, UK
| | - Ellie E Dyer
- UK Centre for Ecology and Hydrology, Wallingford, UK
- Centre for Biodiversity and Environment Research, Department of Genetics, Evolution, and Environment, University College London, London, UK
| | - Benoit Guénard
- Insect Biodiversity and Biogeography Laboratory, School of Biological Sciences, The University of Hong Kong, Pok Fu Lam Rd, Lung Fu Shan, Hong Kong SAR, China
| | - Evan P Economo
- Biodiversity and Biocomplexity Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa, 904-0495, Japan
- Radcliffe Institute for Advanced Study, Harvard University, Cambridge, MA, 02138, USA
| | - Holger Kreft
- Biodiversity, Macroecology & Biogeography, University of Göttingen, Büsgenweg 1, D-37077, Göttingen, Germany
- Centre of Biodiversity and Sustainable Land Use (CBL), University of Göttingen, Büsgenweg 1, D-37077, Göttingen, Germany
| | - Jan Pergl
- Czech Academy of Sciences, Institute of Botany, Department of Invasion Ecology, CZ-252 43, Průhonice, Czech Republic
| | - Petr Pyšek
- Czech Academy of Sciences, Institute of Botany, Department of Invasion Ecology, CZ-252 43, Průhonice, Czech Republic
- Department of Ecology, Faculty of Science, Charles University, Viničná 7, CZ-128 44, Prague, Czech Republic
| | - Mark van Kleunen
- Ecology, Department of Biology, University of Konstanz, Universitätsstrasse 10, D-78457, Konstanz, Germany
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, 318000, China
| | - Wolfgang Nentwig
- Institute of Ecology and Evolution, University of Bern, Baltzerstrasse 6, CH-3012, Bern, Switzerland
| | - Carlo Rondinini
- Global Mammal Assessment programme, Dipartimento di Biologia e Biotecnologie "Charles Darwin", Sapienza Università di Roma, Rome, Italy
| | - Hanno Seebens
- Senckenberg Biodiversity and Climate Research Centre, Senckenberganlage 25, 60325, Frankfurt, Germany
| | - Patrick Weigelt
- Biodiversity, Macroecology & Biogeography, University of Göttingen, Büsgenweg 1, D-37077, Göttingen, Germany
- Centre of Biodiversity and Sustainable Land Use (CBL), University of Göttingen, Büsgenweg 1, D-37077, Göttingen, Germany
- Campus-Institut Data Science, University of Göttingen, Goldschmidtstraße 1, D-37077, Göttingen, Germany
| | - Marten Winter
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
| | - Andy Purvis
- Department of Life Sciences, Natural History Museum, London, SW7 5BD, UK
- Department of Life Sciences, Imperial College London, Ascot, SL5 7PY, UK
| | - Stefan Dullinger
- Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030, Vienna, Austria
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56
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Etard A. Biodiversity conservation: Looking over the horizon. Curr Biol 2023; 33:R261-R264. [PMID: 37040706 DOI: 10.1016/j.cub.2023.02.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
Abstract
In an age of planetary changes, conservation efforts are essential to protect biodiversity and nature's benefits to people. Large-scale quantitative analyses forecasting major threats to biodiversity can provide insights into which species and areas should be prioritised for conservation.
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Affiliation(s)
- Adrienne Etard
- Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, Gower Street, London WC1E 6BT, UK.
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57
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Cardillo M, Skeels A, Dinnage R. Priorities for conserving the world's terrestrial mammals based on over-the-horizon extinction risk. Curr Biol 2023; 33:1381-1388.e6. [PMID: 37040697 DOI: 10.1016/j.cub.2023.02.063] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/15/2022] [Accepted: 02/21/2023] [Indexed: 04/13/2023]
Abstract
Three major axes of global change put the world's mammal biodiversity at risk: climate change, human population growth, and land-use change.1,2,3,4,5,6,7,8,9,10,11,12 In some parts of the world the full effects of these threats on species will only be felt in decades to come, yet conservation emphasizes species currently threatened with extinction, by threats that have already occurred. There have been calls for conservation to become more proactive by anticipating and protecting species that may not yet be threatened, but have a high chance of becoming threatened in the future.3,6,8,10,12,13,14 We refer to this as "over-the-horizon" extinction risk, and we identify such species among the world's nonmarine mammals by considering not only the severity of increase in threats faced by each species, but also the way each species' biology confers sensitivity or robustness to threats. We define four future risk factors based on species' biology and projected exposure to severe change in climate, human population, and land use. We regard species with two or more of these risk factors as especially vulnerable to future extinction risk.10,15,16,17,18,19 Our models predict that by 2100 up to 1,057 (20%) of nonmarine mammal species will have combinations of two or more future risk factors. These species will be particularly concentrated in two future risk hotspots in sub-Saharan Africa and southern/eastern Australia. Proactively targeting species with over-the-horizon extinction risk could help to future-proof global conservation planning and prevent a new wave of mammal species from becoming threatened with extinction by the end of this century.
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Affiliation(s)
- Marcel Cardillo
- Research School of Biology, Australian National University, 46 Sullivans Creek Rd, Acton, ACT 0200, Australia.
| | - Alexander Skeels
- Research School of Biology, Australian National University, 46 Sullivans Creek Rd, Acton, ACT 0200, Australia; Landscape Ecology, Department of Environmental Systems Science, Institute of Terrestrial Ecosystems, ETH Zürich, CH-8092 Zürich, Switzerland
| | - Russell Dinnage
- Research School of Biology, Australian National University, 46 Sullivans Creek Rd, Acton, ACT 0200, Australia; Institute of Environment, Department of Biological Sciences, Florida International University, Miami, FL 33199, USA
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58
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Weerasena L, Shier D, Tonkyn D, McFeaters M, Collins C. A sequential approach to reserve design with compactness and contiguity considerations. Ecol Modell 2023. [DOI: 10.1016/j.ecolmodel.2023.110281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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59
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Putra AR, Yen JDL, Fournier-Level A. Forecasting trait responses in novel environments to aid seed provenancing under climate change. Mol Ecol Resour 2023; 23:565-580. [PMID: 36308465 DOI: 10.1111/1755-0998.13728] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 10/23/2022] [Accepted: 10/27/2022] [Indexed: 11/28/2022]
Abstract
Revegetation projects face the major challenge of sourcing optimal plant material. This is often done with limited information about plant performance and increasingly requires factoring resilience to climate change. Functional traits can be used as quantitative indices of plant performance and guide seed provenancing, but trait values expected under novel conditions are often unknown. To support climate-resilient provenancing efforts, we develop a trait prediction model that integrates the effect of genetic variation with fine-scale temperature variation. We train our model on multiple field plantings of Arabidopsis thaliana and predict two relevant fitness traits-days-to-bolting and fecundity-across the species' European range. Prediction accuracy was high for days-to-bolting and moderate for fecundity, with the majority of trait variation explained by temperature differences between plantings. Projection under future climate predicted a decline in fecundity, although this response was heterogeneous across the range. In response, we identified novel genotypes that could be introduced to genetically offset the fitness decay. Our study highlights the value of predictive models to aid seed provenancing and improve the success of revegetation projects.
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Affiliation(s)
- Andhika R Putra
- School of BioSciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Jian D L Yen
- Arthur Rylah Institute for Environmental Research, Heidelberg, Victoria, Australia
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60
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Grzędzicka E. Assessing the role of invasive weeds in the impact of successional habitats on the bird assemblage in overgrowing agriculture. J Nat Conserv 2023. [DOI: 10.1016/j.jnc.2023.126352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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61
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Baecher JA, Johnson SA, Roznik EA, Scheffers BR. Experimental evaluation of how biological invasions and climate change interact to alter the vertical assembly of an amphibian community. J Anim Ecol 2023; 92:875-888. [PMID: 36872563 DOI: 10.1111/1365-2656.13899] [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: 05/26/2022] [Accepted: 11/17/2022] [Indexed: 03/07/2023]
Abstract
While biotic-abiotic interactions are increasingly documented in nature, a process-based understanding of how such interactions influence community assembly is lacking in the ecological literature. Perhaps the most emblematic and pervasive example of such interactions is the synergistic threat to biodiversity posed by climate change and invasive species. Invasive species often out-compete or prey on native species. Despite this long-standing and widespread issue, little is known about how abiotic conditions, such as climate change, will influence the frequency and severity of negative biotic interactions that threaten the persistence of native fauna. Treefrogs are a globally diverse group of amphibians that climb to complete life-cycle processes, such as foraging and reproduction, as well as to evade predators and competitors, resulting in frog communities that are vertically partitioned. Furthermore, treefrogs adjust their vertical position to maintain optimal body temperature and hydration in response to environmental change. Here, utilizing this model group, we designed a novel experiment to determine how extrinsic abiotic and biotic factors (changes to water availability and an introduced predator, respectively) interact with intrinsic biological traits, such as individual physiology and behaviour, to influence treefrogs' vertical niche. Our study found that treefrogs adjusted their vertical niche through displacement behaviours in accordance with abiotic resources. However, biotic interactions resulted in native treefrogs distancing themselves from abiotic resources to avoid the non-native species. Importantly, under altered abiotic conditions, both native species avoided the non-native species 33 $$ 33 $$ %- 70 % $$ 70\% $$ more than they avoided their native counterpart. Additionally, exposure to the non-native species resulted in native species altering their tree climbing behaviours by 56 % - 78 % $$ 56\%\hbox{--} 78\% $$ and becoming more vertically dynamic to avoid the non-native antagonist. Our experiment determined that vertical niche selection and community interactions were most accurately represented by a biotic-abiotic interaction model, rather than a model that considers these factors to operate in an isolated (singular) or even additive manner. Our study provides evidence that native species may be resilient to interacting disturbances via physiological adaptations to local climate and plasticity in space-use behaviours that mediate the impact of the introduced predator.
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Affiliation(s)
- J Alex Baecher
- School of Natural Resources and Environment, University of Florida, Gainesville, Florida, USA
| | - Steve A Johnson
- School of Natural Resources and Environment, University of Florida, Gainesville, Florida, USA.,Department of Wildlife Ecology and Conservation, University of Florida, Gainesville, Florida, USA
| | - Elizabeth A Roznik
- Department of Conservation and Research, Memphis Zoo, Memphis, Tennessee, USA.,North Carolina Zoo, Asheboro, North Carolina, USA
| | - Brett R Scheffers
- School of Natural Resources and Environment, University of Florida, Gainesville, Florida, USA.,Department of Wildlife Ecology and Conservation, University of Florida, Gainesville, Florida, USA
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62
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Rabbetts M, Fahrig L, Mitchell GW, Hannah KC, Collins SJ, Wilson S. Direct and indirect effects of agricultural land cover on avian biodiversity in eastern Canada. BIODIVERSITY AND CONSERVATION 2023; 32:1403-1421. [PMID: 36992920 PMCID: PMC10039827 DOI: 10.1007/s10531-023-02559-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 12/15/2022] [Accepted: 02/06/2023] [Indexed: 06/19/2023]
Abstract
UNLABELLED Agriculture is one of the largest threats to global biodiversity. However, most studies have focused only on the direct effects of agriculture on biodiversity, and few have addressed the indirect effects, potentially over or under-estimating the overall impacts of agriculture on biodiversity. The indirect effect is the response not to the agricultural cover types or operations per se, but instead, to the way that agriculture influences the extent and configuration of different types of natural land cover in the landscape. We used structural equation modelling (SEM) to evaluate the direct, indirect, and total effects of agriculture on species richness of three bird guilds: forest birds, shrub-edge birds, and open country birds. We found that forest bird richness was driven by the negative indirect effect of cropland via forest loss. Shrub-edge and open country bird richness increased with the amount of agriculture land covers; however, importantly, we found negative indirect effects of agriculture on both guilds via a reduction in more natural land covers. This latter result highlights how we would have over-estimated the positive effects of agriculture on shrub-edge and open country bird richness had we not measured both direct and indirect effects (i.e., the total effect size is less than the direct effect size). Overall, our results suggest that a bird-friendly agricultural landscape in our region would have forest that is configured to maximize forest edge, and a high proportion of perennial forage within the agricultural portion of the landscape. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s10531-023-02559-1.
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Affiliation(s)
| | - Lenore Fahrig
- Department of Biology, Carleton University, Ottawa, Canada
| | - Greg W. Mitchell
- Department of Biology, Carleton University, Ottawa, Canada
- Wildlife Research Division, Environment and Climate Change Canada, Ottawa, ON Canada
| | - Kevin C. Hannah
- Canadian Wildlife Service, Environment and Climate Change Canada, Ottawa, ON Canada
| | | | - Scott Wilson
- Department of Biology, Carleton University, Ottawa, Canada
- Department of Forest and Conservation Sciences, University of British Columbia, Vancouver, BC Canada
- Wildlife Research Division, Environment and Climate Change Canada, Delta, BC Canada
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63
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Piccini I, Macrì M, Gea M, Dessì L, Bonetta S, Schilirò T, Santovito A, Bonelli S. Genotoxic effects of particulate matter on larvae of a common and widespread butterfly along an urbanization gradient. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 252:114638. [PMID: 36791502 DOI: 10.1016/j.ecoenv.2023.114638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 02/06/2023] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
Biodiversity is currently declining worldwide. Several threats have been identified such as habitat loss and climate change. It is unknown if and how air pollution can work in addition or in synergy to these threats, contributing to the decline of current species and/or local extinction. Few studies have investigated the effects of particulate matter (PM), the main component of air pollution, on insects, and no studies have investigated its genotoxic effects through Micronucleus assay. Butterflies play an important role in the environment, as herbivores during larval stages, and as pollinators as adults. The aim of this study was to evaluate the genotoxic effects of PM10 from different sites along a gradient of population urbanization, on a common cabbage butterfly species (Pieris brassicae). PM10 was collected from April to September in an urban (Turin, Italy), a suburban (Druento, Italy) and a mountain site (Ceresole Reale, Italy) with different urbanization levels. P. brassicae larvae (n = 218) were reared in the laboratory under controlled conditions (26 °C, L:D 15:9) on cabbage plants (average 9.2 days), and they were exposed to PM10 organic extracts (20 and 40 m3/mL) or dimethyl sulfoxide (controls) through vaporization. After exposure, larvae were dissected and cells were used for the Micronucleus (MN) assay. Results showed that all PM extracts induced significant DNA damage in exposed larvae compared to controls, and that increasing the PM dose (from 20 to 40 m3/mL) increased genotoxic effects. However, we did not detect any significant differences between sites with different urbanization levels. In conclusion, PM at different concentrations induced genotoxic effects on larvae of a common butterfly species. More alarmingly, PM could work in addition to and/or in synergy with other compounds (e.g. pesticides) and, especially on species already threatened by other factors (e.g. fragmentation), thus affecting the vitality of populations, leading to local extinctions.
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Affiliation(s)
- Irene Piccini
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy.
| | - Manuela Macrì
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Marta Gea
- Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - Luca Dessì
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Sara Bonetta
- Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - Tiziana Schilirò
- Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - Alfredo Santovito
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Simona Bonelli
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
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64
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Foster WJ, Allen BJ, Kitzmann NH, Münchmeyer J, Rettelbach T, Witts JD, Whittle RJ, Larina E, Clapham ME, Dunhill AM. How predictable are mass extinction events? ROYAL SOCIETY OPEN SCIENCE 2023; 10:221507. [PMID: 36938535 PMCID: PMC10014245 DOI: 10.1098/rsos.221507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
Many modern extinction drivers are shared with past mass extinction events, such as rapid climate warming, habitat loss, pollution and invasive species. This commonality presents a key question: can the extinction risk of species during past mass extinction events inform our predictions for a modern biodiversity crisis? To investigate if it is possible to establish which species were more likely to go extinct during mass extinctions, we applied a functional trait-based model of extinction risk using a machine learning algorithm to datasets of marine fossils for the end-Permian, end-Triassic and end-Cretaceous mass extinctions. Extinction selectivity was inferred across each individual mass extinction event, before testing whether the selectivity patterns obtained could be used to 'predict' the extinction selectivity exhibited during the other mass extinctions. Our analyses show that, despite some similarities in extinction selectivity patterns between ancient crises, the selectivity of mass extinction events is inconsistent, which leads to a poor predictive performance. This lack of predictability is attributed to evolution in marine ecosystems, particularly during the Mesozoic Marine Revolution, associated with shifts in community structure alongside coincident Earth system changes. Our results suggest that past extinctions are unlikely to be informative for predicting extinction risk during a projected mass extinction.
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Affiliation(s)
| | - Bethany J. Allen
- School of Earth and Environment, University of Leeds, Leeds, UK
- Department of Biosystems Science and Engineering, ETH Zürich, Basel, Switzerland
- Computational Evolution Group, Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Niklas H. Kitzmann
- Potsdam Institute for Climate Impact Research (PIK)—Member of the Leibniz Association, Potsdam, Germany
- Institute of Physics and Astronomy, University of Potsdam, Potsdam, Germany
| | - Jannes Münchmeyer
- GFZ German Research Centre for Geoscience, Potsdam, Germany
- Department of Computer Science, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Tabea Rettelbach
- Institute of Physics and Astronomy, University of Potsdam, Potsdam, Germany
- Institute of Geosciences, University of Potsdam, Potsdam, Germany
- Department of Computer Science, Humboldt-Universität zu Berlin, Berlin, Germany
- Permafrost Research Section, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Potsdam, Germany
| | - James D. Witts
- Bristol Palaeobiology Research Group, School of Earth Sciences, University of Bristol, Bristol, UK
| | | | - Ekaterina Larina
- Department of Earth Sciences, University of Southern California, Los Angeles, CA, USA
- Jackson School of Geosciences, University of Texas, Austin, Texas, USA
| | - Matthew E. Clapham
- Department of Earth and Planetary Sciences, University of California, Santa Cruz, CA, USA
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65
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Cerini F, Childs DZ, Clements CF. A predictive timeline of wildlife population collapse. Nat Ecol Evol 2023; 7:320-331. [PMID: 36702859 DOI: 10.1038/s41559-023-01985-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 01/06/2023] [Indexed: 01/27/2023]
Abstract
Contemporary rates of biodiversity decline emphasize the need for reliable ecological forecasting, but current methods vary in their ability to predict the declines of real-world populations. Acknowledging that stressor effects start at the individual level, and that it is the sum of these individual-level effects that drives populations to collapse, shifts the focus of predictive ecology away from using predominantly abundance data. Doing so opens new opportunities to develop predictive frameworks that utilize increasingly available multi-dimensional data, which have previously been overlooked for ecological forecasting. Here, we propose that stressed populations will exhibit a predictable sequence of observable changes through time: changes in individuals' behaviour will occur as the first sign of increasing stress, followed by changes in fitness-related morphological traits, shifts in the dynamics (for example, birth rates) of populations and finally abundance declines. We discuss how monitoring the sequential appearance of these signals may allow us to discern whether a population is increasingly at risk of collapse, or is adapting in the face of environmental change, providing a conceptual framework to develop new forecasting methods that combine multi-dimensional (for example, behaviour, morphology, life history and abundance) data.
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Affiliation(s)
- Francesco Cerini
- School of Biological Sciences, University of Bristol, Bristol, UK.
| | - Dylan Z Childs
- School of Biosciences, University of Sheffield, Sheffield, UK
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66
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Beal T, Ortenzi F, Fanzo J. Estimated micronutrient shortfalls of the EAT-Lancet planetary health diet. Lancet Planet Health 2023; 7:e233-e237. [PMID: 36889864 DOI: 10.1016/s2542-5196(23)00006-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 11/20/2022] [Accepted: 01/12/2023] [Indexed: 05/26/2023]
Abstract
Unhealthy diets are a major contributor to the global burden of disease, and food systems cause substantial environmental destruction. To lay out how to achieve healthy diets for all, within planetary boundaries, the landmark EAT-Lancet Commission proposed the planetary health diet, which includes a range of possible intakes by food group and substantially restricts the intake of highly processed foods and animal source foods globally. However, concerns have been raised about the extent to which the diet provides adequate essential micronutrients, particularly those generally found in higher quantities and in more bioavailable forms in animal source foods. To address these concerns, we matched each food group point estimate within the respective range with globally representative food composition data. We then compared the resulting dietary nutrient intakes with globally harmonised recommended nutrient intakes for adults and women of reproductive age for six micronutrients that are globally scarce. To fill the dietary gaps that were estimated for vitamin B12, calcium, iron, and zinc, we suggest modifications to the original planetary health diet to achieve micronutrient adequacy (without fortification or supplementation) for adults, which included increasing the proportion of animal source foods and reducing foods high in phytate.
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Affiliation(s)
- Ty Beal
- Global Alliance for Improved Nutrition, Washington, DC, USA.
| | | | - Jessica Fanzo
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
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67
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Soga M, Gaston KJ. Nature benefit hypothesis: Direct experiences of nature predict self‐reported pro‐biodiversity behaviors. Conserv Lett 2023. [DOI: 10.1111/conl.12945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023] Open
Affiliation(s)
- Masashi Soga
- Graduate School of Agricultural and Life Sciences The University of Tokyo Bunkyo Tokyo Japan
| | - Kevin J. Gaston
- Environment and Sustainability Institute University of Exeter Penryn Cornwall UK
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68
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Investigating an Unknown Biodiversity: Evidence of Distinct Lineages of the Endemic Chola Guitarfish Pseudobatos percellens Walbaum, 1792 in the Western Atlantic Ocean. DIVERSITY 2023. [DOI: 10.3390/d15030344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
Anthropogenic actions have affected marine species for a long time, through overexploitation of natural stocks and habitat degradation, influencing the life strategies of several taxa, especially rays and sharks, which have suffered significant population declines in recent years. Therefore, conservation actions and stock management have become paramount. In this regard, chola guitarfish, Pseudobatos percellens, distributed throughout the Brazilian coast, is often commercially fished by local artisanal fleets or as by-catch in shrimp trawl fisheries. Therefore, this study aimed to understand the genetic diversity of P. percellens throughout the Brazilian coast, using single nucleotide polymorphisms (SNPs). Genetic analyses employing 3329 SNPs revealed a hidden biodiversity within P. percellens, with at least one lineage occurring in the Northern and Northeastern regions and another distributed in the Southeastern/Southern Brazilian coast, with high genetic differentiation between them. However, the Discriminant Analysis of Principal Components (DAPC) indicated the presence of in fact three lineages distributed in these regions that must still be better investigated. Therefore, to ensure adequate conservation of chola guitarfish biodiversity, populations must be managed separately along the Brazilian coast. Furthermore, the need for a taxonomic review for this group is noted.
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69
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Costante DM, Haines AM, Leu M. Threatened species face similar types and numbers of threats as endangered species when listed under the Endangered Species Act. WILDLIFE SOC B 2023. [DOI: 10.1002/wsb.1425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
| | - Aaron M. Haines
- Applied Conservation Lab, Biology Department Millersville University Millersville PA 17551 USA
| | - Matthias Leu
- Biology Department William & Mary Williamsburg VA 23185 USA
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70
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Miranda R, Escribano N, Casas M, Pino-Del-Carpio A, Villarroya A. The Role of Zoos and Aquariums in a Changing World. Annu Rev Anim Biosci 2023; 11:287-306. [PMID: 36266060 DOI: 10.1146/annurev-animal-050622-104306] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Zoos and aquariums have evolved significantly. From their origins as enclosures for the mere entertainment of the public, these institutions have undertaken new functions responding to the biodiversity crisis and social demands. Modern zoos and aquariums have the opportunity to educate people, contribute to species conservation, and produce animal-related research. However, there is increasing criticism toward the outcomes of their actions and the holding of species in their facilities. This review offers an integrated analysis of the state of knowledge about the role that zoos and aquariums play today. It describes their performance regarding their conservation, education, and research functions, highlighting general patterns and offering future perspectives. It identifies some challenges common to all these institutions, concluding that the way they keep up with the ever-growing social and environmental expectations will be decisive hereafter.
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Affiliation(s)
- Rafael Miranda
- Instituto de Biodiversidad y Medioambiente (BIOMA), Universidad de Navarra, Pamplona, Navarra, Spain; , , , ,
| | - Nora Escribano
- Instituto de Biodiversidad y Medioambiente (BIOMA), Universidad de Navarra, Pamplona, Navarra, Spain; , , , ,
| | - María Casas
- Instituto de Biodiversidad y Medioambiente (BIOMA), Universidad de Navarra, Pamplona, Navarra, Spain; , , , ,
| | - Andrea Pino-Del-Carpio
- Instituto de Biodiversidad y Medioambiente (BIOMA), Universidad de Navarra, Pamplona, Navarra, Spain; , , , ,
| | - Ana Villarroya
- Instituto de Biodiversidad y Medioambiente (BIOMA), Universidad de Navarra, Pamplona, Navarra, Spain; , , , ,
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71
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Molotoks A, Green J, Ribiero V, Wang Y, West C. Assessing the value of biodiversity‐specific footprinting metrics linked to South American soy trade. PEOPLE AND NATURE 2023. [DOI: 10.1002/pan3.10457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
Affiliation(s)
- Amy Molotoks
- Department of Environment and Geography, Stockholm Environment Institute York University of York York UK
| | - Jonathan Green
- Department of Environment and Geography, Stockholm Environment Institute York University of York York UK
| | | | - Yunxia Wang
- Genetics and Conservation, Royal Botanic Garden Edinburgh Edinburgh UK
| | - Chris West
- Department of Environment and Geography, Stockholm Environment Institute York University of York York UK
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72
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Iglesias‐Carrasco M, Medina I, Ord TJ. Global effects of forest modification on herpetofauna communities. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2023; 37:e13998. [PMID: 36073314 PMCID: PMC10099509 DOI: 10.1111/cobi.13998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 08/10/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
As the area covered by human-modified environments grows, it is increasingly important to understand the responses of communities to the novel habitats created, especially for sensitive and threatened taxa. We aimed to improve understanding of the major evolutionary and ecological processes that shape the assemblage of amphibian and reptile communities to forest modifications. To this end, we compiled a global data set of amphibian and reptile surveys in natural, disturbed (burned, logged), and transformed (monocultures, polyspecific plantations) forest communities to assess the richness, phylogenetic diversity, and composition of those communities, as well as the morphological disparity among taxa between natural and modified forest habitats. Forest transformations led to a diversity reduction of 15.46% relative to the statistically nonsignificant effect of disturbances. Transformations also led to a community composition that was 39.4% dissimilar to that on natural forests, compared with 16.1% difference in disturbances. Modifications did not affect the morphological disparity of communities (p = 0.167 and 0.744), and we found little evidence of taxon-specific responses to anthropic impacts. Monocultures and polyspecific plantations detrimentally affected the conservation and ecological value of both amphibian and reptile communities and altered the evolutionary processes shaping these communities, whereas forests with lower impact disturbances might, to some extent, serve as reservoirs of species. Although different mechanisms might buffer the collapse of herpetological communities, preserving remaining natural forests is necessary for conserving communities in the face of future anthropic pressures.
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Affiliation(s)
- Maider Iglesias‐Carrasco
- Evolution and Ecology of Sexual Interactions GroupDoñana Biological Station‐CSICSevillaSpain
- Research School of BiologyAustralian National UniversityCanberraAustralian Capital TerritoryAustralia
| | - Iliana Medina
- School of BioSciencesUniversity of MelbourneMelbourneVictoria3010Australia
| | - Terry J. Ord
- Evolution & Ecology Research Centre and the School of Biological, Earth and Environmental SciencesUniversity of New South WalesKensingtonNew South WalesAustralia
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73
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Arce AN, Cantwell-Jones A, Tansley M, Barnes I, Brace S, Mullin VE, Notton D, Ollerton J, Eatough E, Rhodes MW, Bian X, Hogan J, Hunter T, Jackson S, Whiffin A, Blagoderov V, Broad G, Judd S, Kokkini P, Livermore L, Dixit MK, Pearse WD, Gill RJ. Signatures of increasing environmental stress in bumblebee wings over the past century: Insights from museum specimens. J Anim Ecol 2023; 92:297-309. [PMID: 35978494 PMCID: PMC10086799 DOI: 10.1111/1365-2656.13788] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 06/22/2022] [Indexed: 11/27/2022]
Abstract
Determining when animal populations have experienced stress in the past is fundamental to understanding how risk factors drive contemporary and future species' responses to environmental change. For insects, quantifying stress and associating it with environmental factors has been challenging due to a paucity of time-series data and because detectable population-level responses can show varying lag effects. One solution is to leverage historic entomological specimens to detect morphological proxies of stress experienced at the time stressors emerged, allowing us to more accurately determine population responses. Here we studied specimens of four bumblebee species, an invaluable group of insect pollinators, from five museums collected across Britain over the 20th century. We calculated the degree of fluctuating asymmetry (FA; random deviations from bilateral symmetry) between the right and left forewings as a potential proxy of developmental stress. We: (a) investigated whether baseline FA levels vary between species, and how this compares between the first and second half of the century; (b) determined the extent of FA change over the century in the four bumblebee species, and whether this followed a linear or nonlinear trend; (c) tested which annual climatic conditions correlated with increased FA in bumblebees. Species differed in their baseline FA, with FA being higher in the two species that have recently expanded their ranges in Britain. Overall, FA significantly increased over the century but followed a nonlinear trend, with the increase starting c. 1925. We found relatively warm and wet years were associated with higher FA. Collectively our findings show that FA in bumblebees increased over the 20th century and under weather conditions that will likely increase in frequency with climate change. By plotting FA trends and quantifying the contribution of annual climate conditions on past populations, we provide an important step towards improving our understanding of how environmental factors could impact future populations of wild beneficial insects.
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Affiliation(s)
- Andres N Arce
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK.,School of Engineering, Arts, Science & Technology, University of Suffolk, Ipswich, UK
| | - Aoife Cantwell-Jones
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK
| | - Michael Tansley
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK.,Department of Zoology, University of Oxford, Oxford, UK
| | - Ian Barnes
- Department of Earth Sciences, Natural History Museum, London, UK
| | - Selina Brace
- Department of Earth Sciences, Natural History Museum, London, UK
| | - Victoria E Mullin
- Department of Earth Sciences, Natural History Museum, London, UK.,Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - David Notton
- Department of Earth Sciences, Natural History Museum, London, UK.,National Museum Scotland, Edinburgh, UK
| | - Jeff Ollerton
- Faculty of Arts, Science and Technology, University of Northampton, Northampton, UK
| | - Emma Eatough
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK
| | - Marcus W Rhodes
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK
| | - Xueni Bian
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK.,Department of Earth Sciences, Natural History Museum, London, UK
| | - James Hogan
- Oxford University Museum of Natural History, Oxford, UK
| | | | - Simon Jackson
- Tullie House Museum and Art Gallery Trust, Cumbria, UK.,Ipswich Museum (Colchester and Ipswich Museums), Ipswich, UK
| | | | | | - Gavin Broad
- Department of Earth Sciences, Natural History Museum, London, UK
| | | | - Phaedra Kokkini
- Department of Earth Sciences, Natural History Museum, London, UK
| | | | - Mahika K Dixit
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK
| | - William D Pearse
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK
| | - Richard J Gill
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK
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74
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Pelech EA, Evers JB, Pederson TL, Drag DW, Fu P, Bernacchi CJ. Leaf, plant, to canopy: A mechanistic study on aboveground plasticity and plant density within a maize-soybean intercrop system for the Midwest, USA. PLANT, CELL & ENVIRONMENT 2023; 46:405-421. [PMID: 36358006 PMCID: PMC10100491 DOI: 10.1111/pce.14487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 11/04/2022] [Accepted: 11/06/2022] [Indexed: 06/16/2023]
Abstract
Plants have evolved to adapt to their neighbours through plastic trait responses. In intercrop systems, plant growth occurs at different spatial and temporal dimensions, creating a competitive light environment where aboveground plasticity may support complementarity in light-use efficiency, realizing yield gains per unit area compared with monoculture systems. Physiological and architectural plasticity including the consequences for light-use efficiency and yield in a maize-soybean solar corridor intercrop system was compared, empirically, with the standard monoculture systems of the Midwest, USA. The impact of reducing maize plant density on yield was investigated in the following year. Intercropped maize favoured physiological plasticity over architectural plasticity, which maintained harvest index (HI) but reduced light interception efficiency (ɛi ) and conversion efficiency (ɛc ). Intercropped soybean invested in both plasticity responses, which maintained ɛi , but HI and ɛc decreased. Reducing maize plant density within the solar corridor rows did not improve yields under monoculture and intercrop systems. Overall, the intercrop decreased land-use efficiency by 9%-19% and uncoordinated investment in aboveground plasticity by each crop under high maize plant density does not support complementarity in light-use efficiency. Nonetheless, the mechanistic understanding gained from this study may improve crop cultivars and intercrop designs for the Midwest to increase yield.
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Affiliation(s)
- Elena A. Pelech
- The Carl R. Woese Institute for Genomic BiologyUniversity of Illinois at Urbana‐ChampaignUrbanaIllinois
| | - Jochem B. Evers
- Department of Plant Sciences, Centre for Crop Systems AnalysisWageningen UniversityWageningenThe Netherlands
| | - Taylor L. Pederson
- The Carl R. Woese Institute for Genomic BiologyUniversity of Illinois at Urbana‐ChampaignUrbanaIllinois
| | - David W. Drag
- The Carl R. Woese Institute for Genomic BiologyUniversity of Illinois at Urbana‐ChampaignUrbanaIllinois
| | - Peng Fu
- Center for Environment, Energy, and EconomyHarrisburg University of Science and TechnologyHarrisburgPennsylvaniaUSA
| | - Carl J. Bernacchi
- The Carl R. Woese Institute for Genomic BiologyUniversity of Illinois at Urbana‐ChampaignUrbanaIllinois
- USDA‐ARS Global Change and Photosynthesis Research UnitUrbanaIllinoisUSA
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75
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Sun J, Ortega DL, Lin W. Food values drive Chinese consumers' demand for meat and milk substitutes. Appetite 2023; 181:106392. [PMID: 36450325 DOI: 10.1016/j.appet.2022.106392] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/27/2022] [Accepted: 11/20/2022] [Indexed: 11/29/2022]
Abstract
Increasing consumption of alternatives to animal-based food products can have significant implications for the sustainability of global food systems. We utilize consumers' food values to identify the drivers of demand for alternative meat and milk products in China, the world's largest consumer market. Using data from 3015 Chinese consumers, we find that public food values, such as environmental impacts and animal welfare, drive consumers' demand for alternative meat and milk. We estimate that approximately 35% of urban food shoppers constitute the potential market for these products. Plant-based meat alternatives to products with strong consumption dependence, such as pork, must compete on price, while alternatives to products with weak consumption dependence, like milk, are likely to earn market premiums. We estimate that modest consumption of alternative meat and milk products in these markets can improve food system sustainability by lowering China's animal production greenhouse gas emissions by 3.4% in addition to reducing animal slaughtering and potentially decreasing health risks associated with the consumption of animal-based food products.
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Affiliation(s)
- Jiayu Sun
- Dept. of Agricultural, Food and Resource Economics, Michigan State University, United States.
| | - David L Ortega
- Dept. of Agricultural, Food and Resource Economics, Michigan State University, United States; China Academy for Rural Development (CARD), School of Public Affairs, Zhejiang University, China.
| | - Wen Lin
- China Academy for Rural Development (CARD), School of Public Affairs, Zhejiang University, China.
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76
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Goddard J, Shivaji R, Cronin JT. Ecological release and patch geometry can cause nonlinear density-area relationships. J Theor Biol 2023; 557:111325. [PMID: 36356943 DOI: 10.1016/j.jtbi.2022.111325] [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: 03/29/2022] [Revised: 10/11/2022] [Accepted: 10/13/2022] [Indexed: 11/09/2022]
Abstract
A primary driver of species extinctions and declining biodiversity is loss and fragmentation of habitats owing to human activities. Many studies spanning a wide diversity of taxa have described the relationship between population density and habitat patch area, i.e., the density-area relationship (DAR), as positive, neutral, negative or some combination of the three. However, the mechanisms responsible for these relationships remain elusive. We employ a theoretical spatially explicit population model built upon the reaction-diffusion framework with absorbing boundary conditions to model a habitat specialist dwelling in islands of habitat surrounded by a hostile matrix. We consider patches with a convex or non-convex geometry. Our results show that a single species following logistic-type population growth exhibits a strictly positive and continuous DAR. However, when multiple asymptotically stable steady states are preset in the system, a discontinuous DAR arises. In the case of two species governed by diffusive Lotka-Volterra growth and competitive interactions, we observe that overall DAR structure can be either (1) positive, (2) positive for small areas and neutral for large, or (3) hump-shaped, i.e., positive for area below a threshold and negative for area above. Patch complexity such as non-convex geometry can cause discontinuities in DAR slope for a single species and create qualitatively different patterns in a competitive system as compared to a convex patch. We also compared our theoretical results with two empirical studies (Anolis lizards on islands and crossbills and pine squirrels in forest fragments) where the pragmatic view of DAR fails to give a mechanistic understanding of what was observed. Close qualitative agreement between theoretical and observed DAR indicates that our model gives a reasonable explanation of the mechanisms underpinning DAR found in those studies. From a conservation perspective, the DAR is crucial to the identification of valuable habitat fragments that favor high abundance and the design of a reserve for a target species. When it comes to protecting a single species, these results suggest that there is unlikely to be a simple solution and that conservation decisions should always be made on a case-by-case basis.
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Affiliation(s)
- Jerome Goddard
- Department of Mathematics, Auburn University Montgomery, Montgomery, 36064, AL, USA.
| | - Ratnasingham Shivaji
- Department of Mathematics and Statistics, University of North Carolina Greensboro, Greensboro, 27412, NC, USA.
| | - James T Cronin
- Department of Biological Sciences, Louisiana State University, Baton Rouge, 70803, LA, USA.
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77
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Anthropogenic edge effects and aging errors by hunters can affect the sustainability of lion trophy hunting. Sci Rep 2023; 13:95. [PMID: 36635294 PMCID: PMC9837042 DOI: 10.1038/s41598-022-25020-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 11/23/2022] [Indexed: 01/13/2023] Open
Abstract
Many large predator populations are in decline globally with significant implications for ecosystem integrity and function. Understanding the drivers of their decline is required to adequately mitigate threats. Trophy hunting is often cited as a tool to conserve large mammal populations but may also have negative impacts if not well managed. Here we use a spatially implicit, individual based model to investigate the threats posed to African lion populations by poorly managed trophy hunting and additive anthropogenic mortality such as poaching and retaliatory killing. We confirm the results of previous studies that show that lion trophy hunting can be sustainable if only older male lions are hunted, but demonstrate that hunting becomes unsustainable when populations are exposed to additional anthropogenic mortality, as is the case for most free ranging populations. We show that edge effects can be a critical determinant of population viability and populations that encompass well protected source areas are more robust than those without. Finally, errors in aging of hunted lions by professional trophy hunters may undermine the sustainability of the age-based quota setting strategies that are now widely used to manage lion trophy hunting. The effect of aging errors was most detrimental to population persistence in the ≥ 6 and ≥ 7 year-old age thresholds that are frequently used to define suitably aged lions for hunting. Resource managers should limit offtakes to older demographics and additionally take a precautionary approach when setting hunting quotas for large carnivore populations that are affected by other sources of anthropogenic mortality, such as bush-meat poaching, retaliatory killing and problem animal control.
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78
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Shea MM, Kuppermann J, Rogers MP, Smith DS, Edwards P, Boehm AB. Systematic review of marine environmental DNA metabarcoding studies: toward best practices for data usability and accessibility. PeerJ 2023; 11:e14993. [PMID: 36992947 PMCID: PMC10042160 DOI: 10.7717/peerj.14993] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 02/12/2023] [Indexed: 03/31/2023] Open
Abstract
The emerging field of environmental DNA (eDNA) research lacks universal guidelines for ensuring data produced are FAIR-findable, accessible, interoperable, and reusable-despite growing awareness of the importance of such practices. In order to better understand these data usability challenges, we systematically reviewed 60 peer reviewed articles conducting a specific subset of eDNA research: metabarcoding studies in marine environments. For each article, we characterized approximately 90 features across several categories: general article attributes and topics, methodological choices, types of metadata included, and availability and storage of sequence data. Analyzing these characteristics, we identified several barriers to data accessibility, including a lack of common context and vocabulary across the articles, missing metadata, supplementary information limitations, and a concentration of both sample collection and analysis in the United States. While some of these barriers require significant effort to address, we also found many instances where small choices made by authors and journals could have an outsized influence on the discoverability and reusability of data. Promisingly, articles also showed consistency and creativity in data storage choices as well as a strong trend toward open access publishing. Our analysis underscores the need to think critically about data accessibility and usability as marine eDNA metabarcoding studies, and eDNA projects more broadly, continue to proliferate.
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Affiliation(s)
- Meghan M. Shea
- Emmett Interdisciplinary Program in Environment & Resources (E-IPER), Stanford University, Stanford, CA, United States of America
| | - Jacob Kuppermann
- Earth Systems Program, Stanford University, Stanford, CA, United States of America
| | - Megan P. Rogers
- Program in Human Biology, Stanford University, Stanford, CA, United States of America
| | - Dustin Summer Smith
- Earth Systems Program, Stanford University, Stanford, CA, United States of America
| | - Paul Edwards
- Program in Science, Technology and Society, Stanford University, Stanford, CA, United States of America
| | - Alexandria B. Boehm
- Department of Civil and Environmental Engineering, Stanford University, Stanford, CA, United States of America
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79
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Chozas S, Nunes A, Serrano HC, Ascensão F, Tapia S, Máguas C, Branquinho C. Rescuing Botany: using citizen-science and mobile apps in the classroom and beyond. NPJ BIODIVERSITY 2023. [PMCID: PMC9975877 DOI: 10.1038/s44185-023-00011-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
Biodiversity is declining due to the impact of human activities. However, public awareness of the biodiversity crisis is low, particularly for plants, creating a barrier to engage with conservation programs. In this perspective, we show how citizen science and mobile apps can be used as educational tools to raise awareness about plant biodiversity among students and the general public. We examine the outcomes of three Bachelor of Science activities as well as two informal education initiatives. We discuss the potential of these approaches as educational and outreach tools. Our results show that citizen science and mobile apps are excellent tools for engaging society in biodiversity conservation and environmental issues.
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Affiliation(s)
- Sergio Chozas
- grid.9983.b0000 0001 2181 4263Centre for Ecology, Evolution and Environmental Changes (cE3c) & Global Change and Sustainability Institute (CHANGE), Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal ,Sociedade Portuguesa de Botânica (SPBotânica), Lisbon, Portugal
| | - Alice Nunes
- grid.9983.b0000 0001 2181 4263Centre for Ecology, Evolution and Environmental Changes (cE3c) & Global Change and Sustainability Institute (CHANGE), Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
| | - Helena C. Serrano
- grid.9983.b0000 0001 2181 4263Centre for Ecology, Evolution and Environmental Changes (cE3c) & Global Change and Sustainability Institute (CHANGE), Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
| | - Fernando Ascensão
- grid.9983.b0000 0001 2181 4263Centre for Ecology, Evolution and Environmental Changes (cE3c) & Global Change and Sustainability Institute (CHANGE), Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
| | - Susana Tapia
- Sociedade Portuguesa de Botânica (SPBotânica), Lisbon, Portugal
| | - Cristina Máguas
- grid.9983.b0000 0001 2181 4263Centre for Ecology, Evolution and Environmental Changes (cE3c) & Global Change and Sustainability Institute (CHANGE), Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
| | - Cristina Branquinho
- grid.9983.b0000 0001 2181 4263Centre for Ecology, Evolution and Environmental Changes (cE3c) & Global Change and Sustainability Institute (CHANGE), Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
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80
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Albaladejo‐Robles G, Böhm M, Newbold T. Species life-history strategies affect population responses to temperature and land-cover changes. GLOBAL CHANGE BIOLOGY 2023; 29:97-109. [PMID: 36250232 PMCID: PMC10092366 DOI: 10.1111/gcb.16454] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 07/24/2022] [Accepted: 08/27/2022] [Indexed: 06/01/2023]
Abstract
Human-induced environmental changes have a direct impact on species populations, with some species experiencing declines while others display population growth. Understanding why and how species populations respond differently to environmental changes is fundamental to mitigate and predict future biodiversity changes. Theoretically, species life-history strategies are key determinants shaping the response of populations to environmental impacts. Despite this, the association between species life histories and the response of populations to environmental changes has not been tested. In this study, we analysed the effects of recent land-cover and temperature changes on rates of population change of 1,072 populations recorded in the Living Planet Database. We selected populations with at least 5 yearly consecutive records (after imputation of missing population estimates) between 1992 and 2016, and for which we achieved high population imputation accuracy (in the cases where missing values had to be imputed). These populations were distributed across 553 different locations and included 461 terrestrial amniote vertebrate species (273 birds, 137 mammals, and 51 reptiles) with different life-history strategies. We showed that populations of fast-lived species inhabiting areas that have experienced recent expansion of cropland or bare soil present positive populations trends on average, whereas slow-lived species display negative population trends. Although these findings support previous hypotheses that fast-lived species are better adapted to recover their populations after an environmental perturbation, the sensitivity analysis revealed that model outcomes are strongly influenced by the addition or exclusion of populations with extreme rates of change. Therefore, the results should be interpreted with caution. With climate and land-use changes likely to increase in the future, establishing clear links between species characteristics and responses to these threats is fundamental for designing and conducting conservation actions. The results of this study can aid in evaluating population sensitivity, assessing the likely conservation status of species with poor data coverage, and predicting future scenarios of biodiversity change.
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Affiliation(s)
- Gonzalo Albaladejo‐Robles
- Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and EnvironmentUniversity College LondonLondonUK
- Institute of ZoologyZoological Society of LondonLondonUK
| | - Monika Böhm
- Institute of ZoologyZoological Society of LondonLondonUK
- Global Center for Species SurvivalIndianapolisIndianaUSA
| | - Tim Newbold
- Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and EnvironmentUniversity College LondonLondonUK
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81
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Wood A, Queiroz C, Deutsch L, González-Mon B, Jonell M, Pereira L, Sinare H, Svedin U, Wassénius E. Reframing the local-global food systems debate through a resilience lens. NATURE FOOD 2023; 4:22-29. [PMID: 37118580 DOI: 10.1038/s43016-022-00662-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 11/04/2022] [Indexed: 04/30/2023]
Abstract
Despite the growing knowledge that food system solutions should account for interactions and drivers across scales, broader societal debate on how to solve food system challenges is often focused on two dichotomous perspectives and associated solutions: either more localized food systems or greater global coordination of food systems. The debate has found problematic expressions in contemporary challenges, prompting us to revisit the role that resilience thinking can play when faced with complex crises that increase uncertainty. Here we identify four 'aching points' facing food systems that are central points of tension in the local-global debate. We apply the seven principles of resilience to these aching points to reframe the solution space to one that embeds resilience into food systems' management and governance at all scales, supporting transformative change towards sustainable food systems.
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Affiliation(s)
- Amanda Wood
- Stockholm Resilience Centre, Stockholm University, Stockholm, Sweden.
| | - Cibele Queiroz
- Stockholm Resilience Centre, Stockholm University, Stockholm, Sweden
- Global Resilience Partnership, Stockholm, Sweden
| | - Lisa Deutsch
- Stockholm Resilience Centre, Stockholm University, Stockholm, Sweden
- Nordic Institute of Latin American Studies, Stockholm University, Stockholm, Sweden
| | | | - Malin Jonell
- Stockholm Resilience Centre, Stockholm University, Stockholm, Sweden
- Global Economic Dynamics and the Biosphere, The Royal Swedish Academy of Sciences, Stockholm, Sweden
- Beijer Institute of Ecological Economics, The Royal Swedish Academy of Sciences, Stockholm, Sweden
| | - Laura Pereira
- Stockholm Resilience Centre, Stockholm University, Stockholm, Sweden
- Global Change Institute, University of the Witwatersrand, Johannesburg, South Africa
| | - Hanna Sinare
- Stockholm Resilience Centre, Stockholm University, Stockholm, Sweden
| | - Uno Svedin
- Stockholm Resilience Centre, Stockholm University, Stockholm, Sweden
| | - Emmy Wassénius
- Stockholm Resilience Centre, Stockholm University, Stockholm, Sweden
- Global Economic Dynamics and the Biosphere, The Royal Swedish Academy of Sciences, Stockholm, Sweden
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82
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Mitochondrial DNA and Distribution Modelling Evidenced the Lost Genetic Diversity and Wild-Residence of Star Tortoise, Geochelone elegans (Testudines: Testudinidae) in India. Animals (Basel) 2022; 13:ani13010150. [PMID: 36611759 PMCID: PMC9817980 DOI: 10.3390/ani13010150] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/20/2022] [Accepted: 12/26/2022] [Indexed: 01/04/2023] Open
Abstract
The Indian star tortoise (Geochelone elegans) is a massively traded animal in South Asia. To mitigate this risk, the conservation agencies recommended guidelines to safeguard this charismatic species in nature. We adopted mitochondrial DNA-based investigation and performed species distribution modeling of G. elegans throughout its distribution range in the Indian subcontinent. The genetic analyses revealed weak genetic landscape shape interpolations, low intraspecific distances (0% to 1.5%) with mixed haplotype diversity, and a single molecular operational taxonomic unit (MOTU) in the cytochrome b gene dataset. The star tortoise, G. elegans, and its sister species Geochelone platynota showed a monophyletic clustering in the Bayesian (BA) phylogeny. We also attempt to understand the habitat suitability and quality of G. elegans in its distribution range. Our results suggest that, out of the extant area, only 56,495 km2 (9.90%) is suitable for this species, with regions of highest suitability in Sri Lanka. Comparative habitat quality estimation suggests the patch shape complexity and habitat fragmentation are greater in the western and southern ranges of India, which have been greatly influenced by an increased level of urbanization and agriculture practices. We have also provided a retrospect on the potential threat to G. elegans related to the wildlife trade on the regional and international spectrum. Our results detected multiple trading hubs and junctions overlying within the suitable ranges which need special attention in the vicinity. The present study calls for a proper conservation strategy to combat the fragmented distribution and explicitly recommends intensive genetic screening of founder individuals or isolated adult colonies, implementing scientific breeding, and subsequent wild release to restore the lost genetic diversity of star tortoises.
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83
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Collas L, Crastes dit Sourd R, Finch T, Green R, Hanley N, Balmford A. The costs of delivering environmental outcomes with land sharing and land sparing. PEOPLE AND NATURE 2022. [DOI: 10.1002/pan3.10422] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Affiliation(s)
- Lydia Collas
- Department of Zoology University of Cambridge Cambridge UK
| | - Romain Crastes dit Sourd
- Centre for Decision Research, Management Department Leeds University Business School, University of Leeds Leeds UK
| | - Tom Finch
- Royal Society for the Protection of Birds Bedfordshire UK
| | - Rhys Green
- Department of Zoology University of Cambridge Cambridge UK
- Royal Society for the Protection of Birds Bedfordshire UK
| | - Nick Hanley
- Institute of Biodiversity, Animal Health & Comparative Medicine, University of Glasgow Glasgow UK
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84
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Maitz NM, Taylor MFJ, Ward MS, Possingham HP. Assessing the impact of referred actions on protected matters under Australia's national environmental legislation. CONSERVATION SCIENCE AND PRACTICE 2022. [DOI: 10.1111/csp2.12860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Natalya M. Maitz
- Centre for Biodiversity and Conservation Science, School of Biological Sciences The University of Queensland Brisbane Australia
| | - Martin F. J. Taylor
- School of Earth and Environmental Sciences The Univeristy of Queensland Brisbane Australia
| | - Michelle S. Ward
- Centre for Biodiversity and Conservation Science, School of Biological Sciences The University of Queensland Brisbane Australia
- WWF Australia Brisbane Australia
| | - Hugh P. Possingham
- Centre for Biodiversity and Conservation Science, School of Biological Sciences The University of Queensland Brisbane Australia
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85
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Baraka E, Willis MS, Ishimwe BA. What Kigali’s open-air markets reveal about achieving food and nutrition security: the role of African indigenous crops. AGRICULTURE & FOOD SECURITY 2022; 11:17. [PMID: 35194514 PMCID: PMC8852854 DOI: 10.1186/s40066-022-00359-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 01/10/2022] [Indexed: 11/15/2022]
Abstract
Background Household dietary diversity in Rwanda remains low and significantly contributes to the double burden of malnutrition. Rwanda has one of the highest under five stunting rates globally, and malnutrition remains one of the most pressing public health issues; therefore, factors that shape food and nutrition security are of utmost concern. Globally, the variety of foods available in open-air markets has been shown to affect dietary diversity. Furthermore, the consumption of indigenous foods can contribute to a diverse diet and improve nutrition status. At present, there are limited data on foods available for purchase in open-air markets in Africa. Therefore, this study was designed to provide data on food availability in the largest open-air markets of Rwanda’s most populated city, Kigali, and to highlight which foods indigenous to Africa can be purchased. Methods All consumables were inventoried between October and December of 2020 in three open-air markets of Kigali, the capital city of Rwanda. Consumables were organized by the site of domestication and the nutritional contents of some African indigenous crops were compared to similar non-indigenous items. Results A variety of raw and processed consumables was available in the open-air markets inventoried; however, only 25.8% of available species are indigenous to Africa. All Rwanda’s staples, including sweet potatoes, plantains, beans, maize, banana, and cassava, are endemic to other continents. Indigenous plant species, which are often drought-resistant and more nutritious, for example, Africa’s pineapple fruits (Myrianthus holstii), could not be purchased in Kigali’s open-air markets. Pineapple fruits are richer in iron, vitamin C, protein, and vitamin A than banana, which is the most consumed fruit in Rwanda. Conclusions Given rapid population growth, limited arable land, and erratic climate patterns, policies to conserve and promote indigenous species, especially those already adapted to harsh environmental conditions, should be enacted in Rwanda. The cultivation of native vegetables and fruits in home gardens, and the conservation of edible wild species, can improve dietary diversity and enhance food and nutrition security across the entire country.
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86
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Li X, Hu W, Bleisch WV, Li Q, Wang H, Ti B, Qin Z, Sun J, Zhang F, Jiang X. Disproportionate loss of threatened terrestrial mammals along anthropogenic disturbance gradients. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 850:158038. [PMID: 35981589 DOI: 10.1016/j.scitotenv.2022.158038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 08/10/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
Tens of thousands of species are increasingly confronted with habitat degradation and threatened with local extirpation and global extinction as a result of human activities. Understanding the local processes that shape the regional distribution patterns of at-risk species is useful in safeguarding species against threats. However, there is only limited understanding of the processes that shape the regional distribution patterns of threatened species. We explored the drivers and patterns of species richness of threatened, non-threatened and total terrestrial mammals by employing multi-region multi-species occupancy models based on data from a broad camera trapping survey at 1096 stations stratified across different levels of human activities in 54 mountain forests in southwest China. We compared correlates between total and threatened species richness and examined relationships of human impact variables with the proportion of threatened species and the site's local contribution to β diversity (LCBD). We found that threatened species richness was negatively related to human modification and human presence. However, both non-threatened and total species richness increased as human modification increased. Predicted proportions of threatened species were strongly and positively related to LCBD but negatively related to human modification and human presence. Our results indicate that human impacts can lead to disproportionate loss of threatened terrestrial mammals and highlight the importance of considering threatened species diversity independently from total species richness for directing conservation resources. Our approach represents one of the highest-resolution analyses of different types of human impacts on regional diversity patterns of threatened terrestrial mammals available to inform conservation policy.
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Affiliation(s)
- Xueyou Li
- State Key Laboratory of Genetic Resources and Evolution & Yunnan Key Laboratory of Biodiversity and Ecological Security of Gaoligong Mountain, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China
| | - Wenqiang Hu
- State Key Laboratory of Genetic Resources and Evolution & Yunnan Key Laboratory of Biodiversity and Ecological Security of Gaoligong Mountain, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China
| | - William V Bleisch
- China Exploration and Research Society, 2707-08 SouthMark, Wong Chuk Hang, Hong Kong, China
| | - Quan Li
- State Key Laboratory of Genetic Resources and Evolution & Yunnan Key Laboratory of Biodiversity and Ecological Security of Gaoligong Mountain, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China
| | - Hongjiao Wang
- State Key Laboratory of Genetic Resources and Evolution & Yunnan Key Laboratory of Biodiversity and Ecological Security of Gaoligong Mountain, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China
| | - Bu Ti
- Deqan Administrative Sub-Bureau of Baimaxueshan National Nature Reserve, Diqing 674500, China
| | - Zhongyi Qin
- Chuxiong Administrative Sub-Bureau of Ailaoshan National Nature Reserve, Chuxiong 675000, China
| | - Jun Sun
- Gongshan Administrative Sub-Bureau of Gaoligongshan National Nature Reserve, Nujiang 673500, China
| | - Fuyou Zhang
- Baoshan Administrative Bureau of Gaoligongshan National Nature Reserve, Baoshan 678000, China
| | - Xuelong Jiang
- State Key Laboratory of Genetic Resources and Evolution & Yunnan Key Laboratory of Biodiversity and Ecological Security of Gaoligong Mountain, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China.
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87
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Jones SK, Sánchez AC, Beillouin D, Juventia SD, Mosnier A, Remans R, Carmona NE. Achieving win-win outcomes for biodiversity and yield through diversified farming. Basic Appl Ecol 2022. [DOI: 10.1016/j.baae.2022.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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88
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Burdon FJ, Reyes M, Schönenberger U, Räsänen K, Tiegs SD, Eggen RIL, Stamm C. Environmental context determines pollution impacts on ecosystem functioning. OIKOS 2022. [DOI: 10.1111/oik.09131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Francis J. Burdon
- Eawag – Swiss Federal Inst. of Aquatic Science and Technology Dübendorf Switzerland
- Te Aka Mātuatua – School of Science, Univ. of Waikato Hamilton New Zealand
| | - Marta Reyes
- Eawag – Swiss Federal Inst. of Aquatic Science and Technology Dübendorf Switzerland
| | - Urs Schönenberger
- Eawag – Swiss Federal Inst. of Aquatic Science and Technology Dübendorf Switzerland
| | - Katja Räsänen
- Eawag – Swiss Federal Inst. of Aquatic Science and Technology Dübendorf Switzerland
- Dept of Biological and Environmental Science, Univ. of Jyväskylä Jyväskylä Finland
| | - Scott D. Tiegs
- Dept of Biological Sciences, Oakland Univ. Rochester MI USA
| | - Rik I. L. Eggen
- Eawag – Swiss Federal Inst. of Aquatic Science and Technology Dübendorf Switzerland
- ETH Zürich, Inst. of Biogeochemistry and Pollutant Dynamics Zürich Switzerland
| | - Christian Stamm
- Eawag – Swiss Federal Inst. of Aquatic Science and Technology Dübendorf Switzerland
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89
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Sharma S, Acharya AD, Thakur YS, Bhawna. Controlled synthesis of hierarchical BiOCl nanostructure with exposed {010} facets to yield enhanced photocatalytic performance for PMMA deterioration. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03313-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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90
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Backhouse F, Welbergen JA, Magrath RD, Dalziell AH. Depleted cultural richness of an avian vocal mimic in fragmented habitat. DIVERS DISTRIB 2022. [DOI: 10.1111/ddi.13646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- Fiona Backhouse
- The Hawkesbury Institute for the Environment Western Sydney University Richmond New South Wales Australia
| | - Justin A. Welbergen
- The Hawkesbury Institute for the Environment Western Sydney University Richmond New South Wales Australia
| | - Robert D. Magrath
- Research School of Biology The Australian National University Canberra Australian Capital Territory Australia
| | - Anastasia H. Dalziell
- The Hawkesbury Institute for the Environment Western Sydney University Richmond New South Wales Australia
- Centre for Sustainable Ecosystem Solutions, School of Earth, Atmospheric and Life Sciences University of Wollongong Wollongong New South Wales Australia
- Fuller Evolutionary Biology Program, Cornell Lab of Ornithology Cornell University Ithaca New York USA
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91
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Chapin KJ, Jones MR, Winkler DE, Rink G, Massatti R. Evolutionary dynamics inform management interventions of a hanging garden obligate, Carex specuicola. FRONTIERS IN CONSERVATION SCIENCE 2022. [DOI: 10.3389/fcosc.2022.941002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Uncovering the historical and contemporary processes shaping rare species with complex distributions is of growing importance due to threats such as habitat destruction and climate change. Species restricted to specialized, patchy habitat may persist by virtue of life history characteristics facilitating ongoing gene flow and dispersal, but they could also reflect the remnants of formerly widespread, suitable habitat that existed during past climate regimes. If formerly widespread species did not rely upon traits facilitating high dispersibility to persist, contemporary populations could be at high risk of extirpation or extinction. Fortunately, genomic investigations provide an opportunity to illuminate such alternative scenarios while simultaneously offering guidance for future management interventions. Herein, we test the role of these mechanisms in shaping patterns of genomic diversity and differentiation across a highly restricted and rare ecosystem: desert hanging gardens. We focus on Carex specuicola (Cyperaceae), a hanging garden obligate narrowly distributed in the Four Corners region of the southwestern United States that is listed as Threatened under the United States Endangered Species Act. Population structure and diversity analyses reveal that hanging garden populations are shaped by strong genetic drift, but that individuals in gardens are occasionally more closely related to individuals at other gardens than to individuals within the same garden. Similarly, gardens separated by long geographic distances may contain individuals that are more closely related compared to individuals in gardens separated by short geographic distances. Demographic modeling supports historical gene flow between some contemporary garden pairs, which is corroborated by low estimates of inbreeding coefficients and recent divergence times. As such, multiple lines of evidence support dispersal and gene flow across C. specuicola populations at both small and large spatial scales, indicating that even if C. specuicola was formerly more widespread, it may be well suited to persist in hanging gardens so long as suitable habitat remains available. Analyses like those demonstrated herein may be broadly applicable for understanding the short- and long-term evolutionary processes influencing rare species, and especially those having complex distributions across heterogeneous landscapes.
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92
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Loveridge AJ, Sousa LL, Cushman S, Kaszta Ż, Macdonald DW. Where have all the lions gone? Establishing realistic baselines to assess decline and recovery of African lions. DIVERS DISTRIB 2022. [DOI: 10.1111/ddi.13637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- Andrew J. Loveridge
- Wildlife Conservation Research Unit, Recanati‐Kaplan Centre, Department of Zoology University of Oxford Oxford UK
| | - Lara L. Sousa
- Wildlife Conservation Research Unit, Recanati‐Kaplan Centre, Department of Zoology University of Oxford Oxford UK
| | - Samuel Cushman
- Wildlife Conservation Research Unit, Recanati‐Kaplan Centre, Department of Zoology University of Oxford Oxford UK
- US Forest Service, Rocky Mountain Research Station Flagstaff Arizona USA
| | - Żaneta Kaszta
- Wildlife Conservation Research Unit, Recanati‐Kaplan Centre, Department of Zoology University of Oxford Oxford UK
| | - David W. Macdonald
- Wildlife Conservation Research Unit, Recanati‐Kaplan Centre, Department of Zoology University of Oxford Oxford UK
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93
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Ma T, Sun G, Li X, Liu X, Liu F, Qian F, Xiao W. Effects of forest amount and fragmentation on different bird guilds reveal strategies of forest restoration in Three Gorges Reservoir area of Yangtze River, China. Glob Ecol Conserv 2022. [DOI: 10.1016/j.gecco.2022.e02224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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94
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Calleja JA, Domènech G, Sáez L, Lara F, Garilleti R, Albertos B. Extinction risk of threatened and non-threatened mosses: Reproductive and ecological patterns. Glob Ecol Conserv 2022. [DOI: 10.1016/j.gecco.2022.e02254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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95
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Masseloux J, Le QT, Burr J, Gerber BD. Estimating arboreality and the effects of forest structure on tropical tree‐dwelling mesomammals using arboreal camera traps. Anim Conserv 2022. [DOI: 10.1111/acv.12822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- J. Masseloux
- Department of Natural Resources Science University of Rhode Island Kingston RI USA
| | - Q. T. Le
- Southern Institute of Ecology Vietnam Academy of Science and Technology Ho Chi Minh City Vietnam
| | - J. Burr
- Department of Natural Resources Science University of Rhode Island Kingston RI USA
| | - B. D. Gerber
- Department of Natural Resources Science University of Rhode Island Kingston RI USA
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96
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Magliolo M, Naude VN, van der Merwe VC, Prost S, Orozco‐terWengel P, Burger PA, Kotze A, Grobler JP, Dalton DL. Simulated genetic efficacy of metapopulation management and conservation value of captive reintroductions in a rapidly declining felid. Anim Conserv 2022. [DOI: 10.1111/acv.12821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- M. Magliolo
- South African National Biodiversity Institute Pretoria South Africa
- Department of Genetics University of the Free State Bloemfontein South Africa
| | - V. N. Naude
- Department of Conservation Ecology and Entomology University of Stellenbosch Matieland South Africa
- School of Animal, Plant and Environmental Sciences University of the Witwatersrand Johannesburg South Africa
| | - V. C. van der Merwe
- Endangered Wildlife Trust Johannesburg South Africa
- Institute for Communities and Wildlife in Africa University of Cape Town Cape Town South Africa
| | - S. Prost
- South African National Biodiversity Institute Pretoria South Africa
- LOEWE‐Centre for Translational Biodiversity Genomics Senckenberg Nature Research Society Frankfurt Germany
| | | | - P. A. Burger
- Department of Interdisciplinary Life Sciences Research Institute of Wildlife Ecology Vienna Austria
| | - A. Kotze
- South African National Biodiversity Institute Pretoria South Africa
- Department of Genetics University of the Free State Bloemfontein South Africa
| | - J. P. Grobler
- Department of Genetics University of the Free State Bloemfontein South Africa
| | - D. L. Dalton
- South African National Biodiversity Institute Pretoria South Africa
- School of Health and Life Sciences Teesside University Middlesbrough UK
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97
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Fonseka N, Goddard J, Henderson A, Nichols D, Shivaji R. Modeling effects of matrix heterogeneity on population persistence at the patch-level. MATHEMATICAL BIOSCIENCES AND ENGINEERING : MBE 2022; 19:13675-13709. [PMID: 36654063 DOI: 10.3934/mbe.2022638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Habitat loss and fragmentation is the largest contributing factor to species extinction and declining biodiversity. Landscapes are becoming highly spatially heterogeneous with varying degrees of human modification. Much theoretical study of habitat fragmentation has historically focused on a simple theoretical landscape with patches of habitat surrounded by a spatially homogeneous hostile matrix. However, terrestrial habitat patches are often surrounded by complex mosaics of many different land cover types, which are rarely ecologically neutral or completely inhospitable environments. We employ an extension of a reaction diffusion model to explore effects of heterogeneity in the matrix immediately surrounding a patch in a one-dimensional theoretical landscape. Exact dynamics of a population exhibiting logistic growth, an unbiased random walk in the patch and matrix, habitat preference at the patch/matrix interface, and two functionally different matrix types for the one-dimensional landscape is obtained. These results show existence of a minimum patch size (MPS), below which population persistence is not possible. This MPS can be estimated via empirically derived estimates of patch intrinsic growth rate and diffusion rate, habitat preference, and matrix death and diffusion rates. We conclude that local matrix heterogeneity can greatly change model predictions, and argue that conservation strategies should not only consider patch size, configuration, and quality, but also quality and spatial structure of the surrounding matrix.
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Affiliation(s)
- Nalin Fonseka
- School of Arts and Sciences, Carolina University, Winston-Salem, NC 27101, USA
| | - Jerome Goddard
- Department of Mathematics, Auburn University Montgomery, Montgomery, AL 36124, USA
| | - Alketa Henderson
- Department of Mathematics and Statistics, University of North Carolina Greensboro, Greensboro, NC 27412, USA
| | - Dustin Nichols
- Department of Mathematics and Statistics, University of North Carolina Greensboro, Greensboro, NC 27412, USA
| | - Ratnasingham Shivaji
- Department of Mathematics and Statistics, University of North Carolina Greensboro, Greensboro, NC 27412, USA
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98
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Conservation status of the world’s carnivorous mammals (order Carnivora). Mamm Biol 2022. [DOI: 10.1007/s42991-022-00305-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
AbstractThe conservation of carnivores (order Carnivora) can lead to the conservation of other species as well as entire ecosystems since they play an important ecosystemic role. However, their predatory behaviour has caused many of these species to experience marked population declines worldwide and they may therefore face greater anthropogenic threats than other animal groups. To examine the conservation status, population trends, distribution patterns, habitats and threats of all extant species belonging to this order (N = 290), we collected data from the International Union for the Conservation of Nature's Red List. In addition, we calculated the Red List Index (RLI) to measure the change in extinction risk of species over time. Carnivores are more threatened than mammals in general (26.9% of endangered species vs. 22.7%) and have a significantly higher proportion of species with declining populations (48.3% vs. 31.9%). Eupleridae, Ursidae and Felidae families have the worst conservation status. Between the 1990s and 2000s, most families suffered a considerable decline in their RLI value, the most notable being Felidae. The greatest numbers of threatened carnivore species are found in forest, shrubland and grassland habitats. East and South Asia hold great numbers of carnivore species as well as the highest proportion of threatened and declining species. Hunting and trapping of terrestrial animals, along with habitat loss (caused by deforestation and agricultural expansion), pose the main threats to the Carnivora order. Our findings indicate that, within mammals, the conservation of carnivores should be a priority, and conservation measures directed at this group should be undertaken or increased as a matter of urgency.
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99
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Segura-Hernández L, Barrantes G, Chacón-Madrigal E, García-Rodríguez A. Species distribution models and climatic niche comparisons provide clues on the geographic origin of a spider invasion in the Americas. Biol Invasions 2022. [DOI: 10.1007/s10530-022-02904-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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100
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Abstract
Spatial dynamics have long been recognized as an important driver of biodiversity. However, our understanding of species' coexistence under realistic landscape configurations has been limited by lack of adequate analytical tools. To fill this gap, we develop a spatially explicit metacommunity model of multiple competing species and derive analytical criteria for their coexistence in fragmented heterogeneous landscapes. Specifically, we propose measures of niche and fitness differences for metacommunities, which clarify how spatial dynamics and habitat configuration interact with local competition to determine coexistence of species. We parameterize our model with a Bayesian approach using a 36-y time-series dataset of three Daphnia species in a rockpool metacommunity covering >500 patches. Our results illustrate the emergence of interspecific variation in extinction and recolonization processes, including their dependencies on habitat size and environmental temperature. We find that such interspecific variation contributes to the coexistence of Daphnia species by reducing fitness differences and increasing niche differences. Additionally, our parameterized model allows separating the effects of habitat destruction and temperature change on species extinction. By integrating coexistence theory and metacommunity theory, our study provides platforms to increase our understanding of species' coexistence in fragmented heterogeneous landscapes and the response of biodiversity to environmental changes.
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