Ecology Letters最新文献_第10页

Comparing temporal dynamics of compositional reorganization in long-term studies of birds and fish 比较鸟类和鱼类长期研究中成分重组的时间动态

IF 8.8 1区环境科学与生态学

Ecology Letters Pub Date : 2023-05-14 DOI: 10.1111/ele.14214

Amelia Penny, Maria Dornelas, Anne Magurran

{"title":"Comparing temporal dynamics of compositional reorganization in long-term studies of birds and fish","authors":"Amelia Penny, Maria Dornelas, Anne Magurran","doi":"10.1111/ele.14214","DOIUrl":"https://doi.org/10.1111/ele.14214","url":null,"abstract":"The composition of ecological assemblages has changed rapidly over the past century. Compositional reorganization rates are high relative to rates of alpha diversity change, creating an urgent need to understand how this compositional reorganization is progressing. We developed a quantitative framework for comparing temporal trajectories of compositional reorganization and applied it to two long-term bird and marine fish datasets. We then evaluated how the number and magnitude of short-term changes relate to overall rates of change. We found varied trajectories of turnover across birds and fish, with linear directional change predominating in birds and non-directional change more common in fish. The number of changes away from the baseline was a more consistent correlate of the overall rate of change than the magnitude of such changes, but large unreversed changes were found in both fish and birds, as were time series with accelerating compositional change. Compositional reorganization is progressing through a complex mix of temporal trajectories, including both threshold-like behaviour and the accumulation of repeated, linear change.","PeriodicalId":161,"journal":{"name":"Ecology Letters","volume":"26 7","pages":"1071-1083"},"PeriodicalIF":8.8,"publicationDate":"2023-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ele.14214","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5852429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hummingbird blood traits track oxygen availability across space and time 蜂鸟的血液特征追踪了时空中氧气的可用性

IF 8.8 1区环境科学与生态学

Ecology Letters Pub Date : 2023-05-13 DOI: 10.1111/ele.14235

Jessie L. Williamson, Ethan B. Linck, Emil Bautista, Ashley Smiley, Jimmy A. McGuire, Robert Dudley, Christopher C. Witt

{"title":"Hummingbird blood traits track oxygen availability across space and time","authors":"Jessie L. Williamson, Ethan B. Linck, Emil Bautista, Ashley Smiley, Jimmy A. McGuire, Robert Dudley, Christopher C. Witt","doi":"10.1111/ele.14235","DOIUrl":"https://doi.org/10.1111/ele.14235","url":null,"abstract":"Predictable trait variation across environments suggests shared adaptive responses via repeated genetic evolution, phenotypic plasticity or both. Matching of trait–environment associations at phylogenetic and individual scales implies consistency between these processes. Alternatively, mismatch implies that evolutionary divergence has changed the rules of trait–environment covariation. Here we tested whether species adaptation alters elevational variation in blood traits. We measured blood for 1217 Andean hummingbirds of 77 species across a 4600-m elevational gradient. Unexpectedly, elevational variation in haemoglobin concentration ([Hb]) was scale independent, suggesting that physics of gas exchange, rather than species differences, determines responses to changing oxygen pressure. However, mechanisms of [Hb] adjustment did show signals of species adaptation: Species at either low or high elevations adjusted cell size, whereas species at mid-elevations adjusted cell number. This elevational variation in red blood cell number versus size suggests that genetic adaptation to high altitude has changed how these traits respond to shifts in oxygen availability.","PeriodicalId":161,"journal":{"name":"Ecology Letters","volume":"26 7","pages":"1223-1236"},"PeriodicalIF":8.8,"publicationDate":"2023-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6122114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Disentangling spatiotemporal dynamics in metacommunities through a species-patch network approach 基于物种-斑块网络的元群落时空动态分析

IF 8.8 1区环境科学与生态学

Ecology Letters Pub Date : 2023-05-12 DOI: 10.1111/ele.14243

Hai-Dong Li, Marcel Holyoak, Zhishu Xiao

{"title":"Disentangling spatiotemporal dynamics in metacommunities through a species-patch network approach","authors":"Hai-Dong Li, Marcel Holyoak, Zhishu Xiao","doi":"10.1111/ele.14243","DOIUrl":"https://doi.org/10.1111/ele.14243","url":null,"abstract":"Colonization and extinction at local and regional scales, and gains and losses of patches are important processes in the spatiotemporal dynamics of metacommunities. However, analytical challenges remain in quantifying such spatiotemporal dynamics when species extinction-colonization and patch gain and loss processes act simultaneously. Recent advances in network analysis show great potential in disentangling the roles of colonization, extinction, and patch dynamics in metacommunities. Here, we developed a species-patch network approach to quantify metacommunity dynamics including (i) temporal changes in network structure, and (ii) temporal beta diversity of species-patch links and its components that reflect species extinction-colonization and patch gain and loss. Application of the methods to simulated datasets demonstrated that the approach was informative about metacommunity assembly processes. Based on three empirical datasets, our species-patch network approach provided additional information about metacommunity dynamics through distinguishing the effects of species colonization and extinction at different scales from patch gains and losses and how specific environmental factors related to species-patch network structure. In conclusion, our species-patch network framework provides effective methods for monitoring and revealing long-term metacommunity dynamics by quantifying gains and losses of both species and patches under local and global environmental change.","PeriodicalId":161,"journal":{"name":"Ecology Letters","volume":"26 8","pages":"1261-1276"},"PeriodicalIF":8.8,"publicationDate":"2023-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6107266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biogeographic context is related to local scale tree demography, co-occurrence and functional differentiation 生物地理环境与局地尺度树木的人口分布、共生和功能分化有关

IF 8.8 1区环境科学与生态学

Ecology Letters Pub Date : 2023-05-10 DOI: 10.1111/ele.14233

Nathan G. Swenson, Jenny Zambrano, Robert Howe, Amy Wolf

引用次数: 1

Herbaceous vegetation responses to experimental fire in savannas and forests depend on biome and climate 热带稀树草原和森林草本植被对实验火的响应取决于生物群落和气候

IF 8.8 1区环境科学与生态学

Ecology Letters Pub Date : 2023-05-10 DOI: 10.1111/ele.14236

Zachary J. Gold, Adam F. A. Pellegrini, Tyler K. Refsland, Romina J. Andrioli, Marlin L. Bowles, Dale G. Brockway, Neil Burrows, Augusto C. Franco, Steve W. Hallgren, Sarah E. Hobbie, William A. Hoffmann, Kevin P. Kirkman, Peter B. Reich, Patrice Savadogo, Divino Silvério, Kirsten Stephan, Tercia Strydom, J. Morgan Varner, Dale D. Wade, Allan Wills, A. Carla Staver

{"title":"Herbaceous vegetation responses to experimental fire in savannas and forests depend on biome and climate","authors":"Zachary J. Gold, Adam F. A. Pellegrini, Tyler K. Refsland, Romina J. Andrioli, Marlin L. Bowles, Dale G. Brockway, Neil Burrows, Augusto C. Franco, Steve W. Hallgren, Sarah E. Hobbie, William A. Hoffmann, Kevin P. Kirkman, Peter B. Reich, Patrice Savadogo, Divino Silvério, Kirsten Stephan, Tercia Strydom, J. Morgan Varner, Dale D. Wade, Allan Wills, A. Carla Staver","doi":"10.1111/ele.14236","DOIUrl":"https://doi.org/10.1111/ele.14236","url":null,"abstract":"Fire-vegetation feedbacks potentially maintain global savanna and forest distributions. Accordingly, vegetation in savanna and forest ecosystems should have differential responses to fire, but fire response data for herbaceous vegetation have yet to be synthesized across biomes. Here, we examined herbaceous vegetation responses to experimental fire at 30 sites spanning four continents. Across a variety of metrics, herbaceous vegetation increased in abundance where fire was applied, with larger responses to fire in wetter and in cooler and/or less seasonal systems. Compared to forests, savannas were associated with a 4.8 (±0.4) times larger difference in herbaceous vegetation abundance for burned versus unburned plots. In particular, grass cover decreased with fire exclusion in savannas, largely via decreases in C4 grass cover, whereas changes in fire frequency had a relatively weak effect on grass cover in forests. These differential responses underscore the importance of fire for maintaining the vegetation structure of savannas and forests.","PeriodicalId":161,"journal":{"name":"Ecology Letters","volume":"26 7","pages":"1237-1246"},"PeriodicalIF":8.8,"publicationDate":"2023-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ele.14236","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6193621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Early-life food stress hits females harder than males in insects: A meta-analysis of sex differences in environmental sensitivity 昆虫早期食物压力对雌性的影响比雄性更大:对环境敏感性性别差异的荟萃分析

IF 8.8 1区环境科学与生态学

Ecology Letters Pub Date : 2023-05-10 DOI: 10.1111/ele.14241

Tiit Teder, Ants Kaasik

{"title":"Early-life food stress hits females harder than males in insects: A meta-analysis of sex differences in environmental sensitivity","authors":"Tiit Teder, Ants Kaasik","doi":"10.1111/ele.14241","DOIUrl":"https://doi.org/10.1111/ele.14241","url":null,"abstract":"Fitness consequences of early-life environmental conditions are often sex-specific, but corresponding evidence for invertebrates remains inconclusive. Here, we use meta-analysis to evaluate sex-specific sensitivity to larval nutritional conditions in insects. Using literature-derived data for 85 species with broad phylogenetic and ecological coverage, we show that females are generally more sensitive to food stress than males. Stressful nutritional conditions during larval development typically lead to female-biased mortality and thus increasingly male-biased sex ratios of emerging adults. We further demonstrate that the general trend of higher sensitivity to food stress in females can primarily be attributed to their typically larger body size in insects and hence higher energy needs during development. By contrast, there is no consistent evidence of sex-biased sensitivity in sexually size-monomorphic species. Drawing conclusions regarding sex-biased sensitivity in species with male-biased size dimorphism remains to wait for the accumulation of relevant data. Our results suggest that environmental conditions leading to elevated juvenile mortality may potentially affect the performance of insect populations further by reducing the proportion of females among individuals reaching reproductive age. Accounting for sex-biased mortality is therefore essential to understanding the dynamics and demography of insect populations, not least importantly in the context of ongoing insect declines.","PeriodicalId":161,"journal":{"name":"Ecology Letters","volume":"26 8","pages":"1419-1431"},"PeriodicalIF":8.8,"publicationDate":"2023-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ele.14241","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5797751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Adversarial interspecies relationships facilitate population suppression by gene drive in spatially explicit models 在空间显式模型中，对抗性种间关系通过基因驱动促进种群抑制

IF 8.8 1区环境科学与生态学

Ecology Letters Pub Date : 2023-05-10 DOI: 10.1111/ele.14232

Yiran Liu, WeiJian Teo, Haochen Yang, Jackson Champer

引用次数: 0

Humidity – The overlooked variable in the thermal biology of mosquito-borne disease 湿度——在蚊媒疾病的热生物学中被忽视的变量

IF 8.8 1区环境科学与生态学

Ecology Letters Pub Date : 2023-05-10 DOI: 10.1111/ele.14228

Joel J. Brown, Mercedes Pascual, Michael C. Wimberly, Leah R. Johnson, Courtney C. Murdock

{"title":"Humidity – The overlooked variable in the thermal biology of mosquito-borne disease","authors":"Joel J. Brown, Mercedes Pascual, Michael C. Wimberly, Leah R. Johnson, Courtney C. Murdock","doi":"10.1111/ele.14228","DOIUrl":"https://doi.org/10.1111/ele.14228","url":null,"abstract":"Vector-borne diseases cause significant financial and human loss, with billions of dollars spent on control. Arthropod vectors experience a complex suite of environmental factors that affect fitness, population growth and species interactions across multiple spatial and temporal scales. Temperature and water availability are two of the most important abiotic variables influencing their distributions and abundances. While extensive research on temperature exists, the influence of humidity on vector and pathogen parameters affecting disease dynamics are less understood. Humidity is often underemphasized, and when considered, is often treated as independent of temperature even though desiccation likely contributes to declines in trait performance at warmer temperatures. This Perspectives explores how humidity shapes the thermal performance of mosquito-borne pathogen transmission. We summarize what is known about its effects and propose a conceptual model for how temperature and humidity interact to shape the range of temperatures across which mosquitoes persist and achieve high transmission potential. We discuss how failing to account for these interactions hinders efforts to forecast transmission dynamics and respond to epidemics of mosquito-borne infections. We outline future research areas that will ground the effects of humidity on the thermal biology of pathogen transmission in a theoretical and empirical framework to improve spatial and temporal prediction of vector-borne pathogen transmission.","PeriodicalId":161,"journal":{"name":"Ecology Letters","volume":"26 7","pages":"1029-1049"},"PeriodicalIF":8.8,"publicationDate":"2023-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ele.14228","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5797750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Community theory: Testing environmental stress models 社区理论:测试环境压力模型

IF 8.8 1区环境科学与生态学

Ecology Letters Pub Date : 2023-05-09 DOI: 10.1111/ele.14240

Bruce A. Menge

引用次数: 0

Recent exposure to environmental stochasticity does not determine the demographic resilience of natural populations 最近暴露于环境随机性并不能决定自然种群的人口弹性

IF 8.8 1区环境科学与生态学

Ecology Letters Pub Date : 2023-05-09 DOI: 10.1111/ele.14234

James Cant, Pol Capdevila, Maria Beger, Roberto Salguero-Gómez

{"title":"Recent exposure to environmental stochasticity does not determine the demographic resilience of natural populations","authors":"James Cant, Pol Capdevila, Maria Beger, Roberto Salguero-Gómez","doi":"10.1111/ele.14234","DOIUrl":"https://doi.org/10.1111/ele.14234","url":null,"abstract":"Escalating climatic and anthropogenic pressures expose ecosystems worldwide to increasingly stochastic environments. Yet, our ability to forecast the responses of natural populations to this increased environmental stochasticity is impeded by a limited understanding of how exposure to stochastic environments shapes demographic resilience. Here, we test the association between local environmental stochasticity and the resilience attributes (e.g. resistance, recovery) of 2242 natural populations across 369 animal and plant species. Contrary to the assumption that past exposure to frequent environmental shifts confers a greater ability to cope with current and future global change, we illustrate how recent environmental stochasticity regimes from the past 50 years do not predict the inherent resistance or recovery potential of natural populations. Instead, demographic resilience is strongly predicted by the phylogenetic relatedness among species, with survival and developmental investments shaping their responses to environmental stochasticity. Accordingly, our findings suggest that demographic resilience is a consequence of evolutionary processes and/or deep-time environmental regimes, rather than recent-past experiences.","PeriodicalId":161,"journal":{"name":"Ecology Letters","volume":"26 7","pages":"1186-1199"},"PeriodicalIF":8.8,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ele.14234","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6158401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2