Ecology Letters最新文献_第10页

Drivers and Consequences of Size Declines in Unicells. 单细胞大小下降的驱动因素和后果。

IF 7.7 1区环境科学与生态学

Ecology Letters Pub Date : 2026-05-01 DOI: 10.1111/ele.70387

Dustin J Marshall, Hayley E Cameron, Akira Abe, Suzana Goncalves Leles, Craig R White, John Delong

{"title":"Drivers and Consequences of Size Declines in Unicells.","authors":"Dustin J Marshall, Hayley E Cameron, Akira Abe, Suzana Goncalves Leles, Craig R White, John Delong","doi":"10.1111/ele.70387","DOIUrl":"10.1111/ele.70387","url":null,"abstract":"The communities of unicellular microbes (bacteria, protists and yeasts) that underpin ecosystems are changing. In warmer conditions, protists tend to shrink, but the consequences of these changes in size are unclear. We show preliminary evidence that warming-mediated declines in cell size observed in protists also apply to bacteria and yeasts. Predicting the consequences of these warming-mediated size declines requires that the relationships between cell size and key functional traits are well-characterised. We show that the critical relationship between unicellular size and energy use-that is, metabolic scaling-has been systematically mis-estimated in the past. Projections of the effects of warming on unicellular respiration change from superlinear to sublinear once the metabolic scaling relationship is updated, with worrying consequences for the biological carbon pump and other ecosystem services. Other size-function scaling relationships (e.g., photosynthesis) are likely to have been similarly mis-estimated. Next, we show that theory on the relationships between size, temperature and demography is more ambivalent than previously recognised, leaving uncertainty as to how warming will alter the dynamics of unicellular populations. Finally, we identify pathways for improving our capacity to predict future changes in unicellular size, and decrease the uncertainty surrounding the consequences of these changes.","PeriodicalId":161,"journal":{"name":"Ecology Letters","volume":"29 5","pages":"e70387"},"PeriodicalIF":7.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13146120/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831317","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

Evolution of Reproductive Plasticity in a Seasonal Tropical Environment. 热带季节性环境下生殖可塑性的进化。

IF 7.7 1区环境科学与生态学

Ecology Letters Pub Date : 2026-05-01 DOI: 10.1111/ele.70401

Marcus Hicks, Zunilda Escalante-Arteaga, Lizett Retuerto-Silva, Jamal Kabir, Tú Minh Au, Sridhar Halali, Geoffrey Gallice, Vicencio Oostra

{"title":"Evolution of Reproductive Plasticity in a Seasonal Tropical Environment.","authors":"Marcus Hicks, Zunilda Escalante-Arteaga, Lizett Retuerto-Silva, Jamal Kabir, Tú Minh Au, Sridhar Halali, Geoffrey Gallice, Vicencio Oostra","doi":"10.1111/ele.70401","DOIUrl":"10.1111/ele.70401","url":null,"abstract":"Seasonality can drive the evolution of reproductive plasticity in insects. An extreme form is reproductive diapause, where individuals halt reproduction during unfavourable seasons. How diapause evolves from milder forms of plasticity (e.g., through changes in cue perception and responses) is poorly understood. In the tropics, seasonality is common, but it is unclear how widespread reproductive plasticity is, or how it correlates with dry and wet seasons. Here, we analyse reproductive plasticity in Amazonian butterflies using a four-year monthly time series of reproductive phenotypes. Sampling nine species across four Nymphalidae subfamilies, we observe a widespread occurrence of diverse reproductive plasticity, suggesting repeated evolutionary changes in reproductive plasticity. Detailed analyses of two Catonephele species reveal a conserved cue (temperature), with species-specific divergence of cue response (dry season diapause only in C. acontius). Together, our data support the ubiquity of reproductive plasticity in the tropics and suggest repeated evolutionary change in diapause.","PeriodicalId":161,"journal":{"name":"Ecology Letters","volume":"29 5","pages":"e70401"},"PeriodicalIF":7.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148012764","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

IF 7.9 1区环境科学与生态学

Ecology Letters Pub Date : 2026-05-01

引用次数: 0

Plant Functional Traits and Vegetation Structure Explain Pollination Networks at Scale. 植物功能性状和植被结构在尺度上解释授粉网络。

IF 7.7 1区环境科学与生态学

Ecology Letters Pub Date : 2026-05-01 DOI: 10.1111/ele.70389

Kendall M Jefferys, Luísa G Carvalheiro, Adrian González Chaves, Jacobus Petersen, Xiongjie Deng, Waira S Machida, Katherine C R Baldock, Danilo Boscolo, Daniel W Carstensen, Alice Classen, Patrícia Alves Ferreira, Breno M Freitas, Alípio José de Souza Pacheco Filho, Travis J Guy, Ruben Heleno, Christopher N Kaiser-Bunbury, Luciano E Lopes, Gabriel Guariglia Perez, Raimunda Gomes Silva Soares, Anna Traveset, Chloe Strevens, Jesús Aguirre-Gutiérrez

{"title":"Plant Functional Traits and Vegetation Structure Explain Pollination Networks at Scale.","authors":"Kendall M Jefferys, Luísa G Carvalheiro, Adrian González Chaves, Jacobus Petersen, Xiongjie Deng, Waira S Machida, Katherine C R Baldock, Danilo Boscolo, Daniel W Carstensen, Alice Classen, Patrícia Alves Ferreira, Breno M Freitas, Alípio José de Souza Pacheco Filho, Travis J Guy, Ruben Heleno, Christopher N Kaiser-Bunbury, Luciano E Lopes, Gabriel Guariglia Perez, Raimunda Gomes Silva Soares, Anna Traveset, Chloe Strevens, Jesús Aguirre-Gutiérrez","doi":"10.1111/ele.70389","DOIUrl":"10.1111/ele.70389","url":null,"abstract":"Quantifying biotic interactions at scale is critical to understanding ecosystem functions, such as plant-pollinator interactions. Here, we demonstrate how woody plant functional traits and vegetation structure gathered with remote sensing can aid in predicting plant-pollinator network indices from fine to broad spatial extents. We analysed 209 tropical plant-pollinator networks, where vegetation characteristics were generated using spectral and LiDAR data. We found that pollination network structures were correlated to plant traits reflective of drought-adaptive strategies and nutrient availability. Networks were predicted to be more nested and less specialised with increasing leaf nitrogen content. Further, relationships between leaf thickness, photosynthetic capacity, and water content indicate that networks may be more modular and less connected under arid, high-light conditions where plants invest in water-conserving tissues yet maintain high photosynthetic rates. Our findings reveal plant functional strategies as underlying environmental mechanisms that structure plant-pollinator networks, paving the way to predict interactions using remote sensing.","PeriodicalId":161,"journal":{"name":"Ecology Letters","volume":"29 5","pages":"e70389"},"PeriodicalIF":7.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147986026","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

Native-Alien Dichotomy in Pathogen Genomics: Host Specialization Versus Environmental Decoupling. 病原体基因组学中的本地-外来二分法：宿主特化与环境脱钩。

IF 7.7 1区环境科学与生态学

Ecology Letters Pub Date : 2026-05-01 DOI: 10.1111/ele.70394

Yongning Li, George L W Perry, Mahajabeen Padamsee, Shixiao Yu

{"title":"Native-Alien Dichotomy in Pathogen Genomics: Host Specialization Versus Environmental Decoupling.","authors":"Yongning Li, George L W Perry, Mahajabeen Padamsee, Shixiao Yu","doi":"10.1111/ele.70394","DOIUrl":"10.1111/ele.70394","url":null,"abstract":"Genome size is a key genomic trait underpinning evolutionary potential and ecological adaptation in pathogens, yet its biogeographic patterns remain poorly understood. From New Zealand data, we quantify the influence of host traits versus environmental factors on biogeographic patterns of genome size in pathogenic fungi, and test whether these predictors differ between native and alien pathogens. Host plants were the strongest predictors of genome size, with effects particularly pronounced in Basidiomycota and biotrophic fungi. Within co-origin host-pathogen pairs (native-native; alien-alien), conservative host traits were associated with smaller pathogen genomes overall, but with larger genomes in Basidiomycota. Host effects were stronger in native pathogens, while environmental filtering diverged, with climate dominating in native pathogens and terrain-related factors in alien pathogens. Native pathogens exhibited pronounced geographic genomic differentiation, whereas alien pathogens showed spatial homogenization. These results reveal a hierarchical framework that enhances predictions of disease dynamics under global environmental change.","PeriodicalId":161,"journal":{"name":"Ecology Letters","volume":"29 5","pages":"e70394"},"PeriodicalIF":7.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831331","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

Integrating Physiological Rates of Thermal Stress and Repair Predicts Heat Failure During Temperature Fluctuations. 整合热应力和修复的生理速率预测温度波动期间的热失效。

IF 7.7 1区环境科学与生态学

Ecology Letters Pub Date : 2026-05-01 DOI: 10.1111/ele.70398

Michael Ørsted, Lisa Bjerregaard Jørgensen, Petr Hůla, Johannes Overgaard

{"title":"Integrating Physiological Rates of Thermal Stress and Repair Predicts Heat Failure During Temperature Fluctuations.","authors":"Michael Ørsted, Lisa Bjerregaard Jørgensen, Petr Hůla, Johannes Overgaard","doi":"10.1111/ele.70398","DOIUrl":"10.1111/ele.70398","url":null,"abstract":"The Thermal Death Time (TDT) model has enabled quantification of heat injury in ectothermic organisms across variable thermal stress intensities and durations. Using experimental data from Drosophila suzukii, here we extend this framework to include a quantitative assessment of repair of thermal injury. We first demonstrate that heat injury accumulates additively and exponentially at stressful temperatures and subsequently show how repair of heat injury also depends on both temperature and duration across permissive temperatures. We find repair to be additive across different permissive temperatures, with the highest repair rate at intermediate temperatures. Importantly, integration of injury and repair rates enables accurate predictions of thermal failure during simple temperature fluctuations alternating between stressful and permissive temperature ranges. Our data therefore support an extension of the TDT framework to integrate injury-repair dynamics. With further validation for other traits and taxa, these dynamics will be critical for assessing thermal vulnerability in a warming climate.","PeriodicalId":161,"journal":{"name":"Ecology Letters","volume":"29 5","pages":"e70398"},"PeriodicalIF":7.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13180311/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147961595","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

Indirect Interactions Driven by Soil Effects Enable Coexistence Among Competing Plant Species. 土壤效应驱动的间接相互作用使竞争植物物种能够共存。

IF 7.7 1区环境科学与生态学

Ecology Letters Pub Date : 2026-05-01 DOI: 10.1111/ele.70396

Ezequiel Antorán, Jaime Madrigal-González, Rubén Bernardo-Madrid, Miguel Á Fernández-Martínez, Marcelino de la Cruz, Joaquín Calatayud

{"title":"Indirect Interactions Driven by Soil Effects Enable Coexistence Among Competing Plant Species.","authors":"Ezequiel Antorán, Jaime Madrigal-González, Rubén Bernardo-Madrid, Miguel Á Fernández-Martínez, Marcelino de la Cruz, Joaquín Calatayud","doi":"10.1111/ele.70396","DOIUrl":"10.1111/ele.70396","url":null,"abstract":"Reciprocal effects between plants and soil have been proposed as mechanisms that promote coexistence. However, recent theoretical and empirical works have questioned their role in stabilizing coexistence within multispecies communities. In these systems, soil-mediated indirect interactions may play a pivotal but often overlooked role. We investigate these indirect interactions using an experimental system of two competing shrub species grown in soil conditioned by a mediating third tree species. Tree-induced shifts in soil microbial communities, metabolites and nutrients boost growth in the weak competitor species while reducing germination in the dominant competitor. Simulations demonstrate that these shifts in plant performance are sufficient to stabilize coexistence, producing simulated spatial distributions consistent with those observed in natural communities. Our findings underscore the role of soil effects in driving indirect interactions that sustain coexistence in diverse plant communities, highlighting the importance of indirect but also positive and negative multitrophic interactions in maintaining biodiversity.","PeriodicalId":161,"journal":{"name":"Ecology Letters","volume":"29 5","pages":"e70396"},"PeriodicalIF":7.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13180312/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147961643","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

IF 7.9 1区环境科学与生态学

Ecology Letters Pub Date : 2026-05-01

引用次数: 0

Top-Down and Bottom-Up Effects on Insect Herbivores Under Global Change-A Meta-Analysis. 全球变化下昆虫食草性自上而下和自下而上的影响——meta分析

IF 7.7 1区环境科学与生态学

Ecology Letters Pub Date : 2026-05-01 DOI: 10.1111/ele.70386

Mayra C Vidal, Mattheau S Comerford, Billie Maguire, Shannon M Murphy

{"title":"Top-Down and Bottom-Up Effects on Insect Herbivores Under Global Change-A Meta-Analysis.","authors":"Mayra C Vidal, Mattheau S Comerford, Billie Maguire, Shannon M Murphy","doi":"10.1111/ele.70386","DOIUrl":"10.1111/ele.70386","url":null,"abstract":"Global environmental change is driving widespread insect declines, yet underlying mechanisms remain poorly understood, particularly when mediated by trophic interactions. Many studies purportedly test global change stressors on insect herbivores mediated via their host plants (bottom-up) and natural enemies (top-down), but we lack a comprehensive understanding of overall effects. Here, we performed a meta-analysis of 246 papers testing 18 distinct global change stressors impacting insect herbivores via trophic interactions. We found variable, often opposing impacts of global change stressors on herbivore fitness when herbivores and their host plants were exposed, while the only detected significant effect involving natural enemies was a reduced herbivore fitness under warming, potentially due to increased enemy attacks. Notably, generalists exhibited greater vulnerability to global change than specialists, challenging assumptions that dietary generalists are more resilient. Insect herbivores tested in agricultural systems were more prone to be benefited by global change, whereas closed experimental systems amplified negative outcomes. Our results underscore the importance of considering trophic interactions and context-specific dynamics in predicting ecological responses to environmental change. By integrating bottom-up and top-down mechanisms, our study provides a nuanced quantitative understanding of how global change influences insect herbivores, with important implications for biodiversity conservation in the Anthropocene.","PeriodicalId":161,"journal":{"name":"Ecology Letters","volume":"29 5","pages":"e70386"},"PeriodicalIF":7.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13161830/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147872809","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

IF 7.7 1区环境科学与生态学

Ecology Letters Pub Date : 2026-05-01 DOI: 10.1111/ele.70397

Yuzhi Zhu, Meng Li, Junyong Zheng, Yongqiang Wang, Yanghang Ren, Han Zhang, Zeyu Feng, Sandy P Harrison, I Colin Prentice, Yue Zhang, Lewei Jin, Shuang Sun, Mengguang Han, Xiangyin Ni, Yang Wang, Shizuo Fu, Peter B Reich, Ian J Wright, Han Wang

{"title":"Non-Correlated Variation of Leaf and Fine Root Traits in Subtropical Forest Plants.","authors":"Yuzhi Zhu, Meng Li, Junyong Zheng, Yongqiang Wang, Yanghang Ren, Han Zhang, Zeyu Feng, Sandy P Harrison, I Colin Prentice, Yue Zhang, Lewei Jin, Shuang Sun, Mengguang Han, Xiangyin Ni, Yang Wang, Shizuo Fu, Peter B Reich, Ian J Wright, Han Wang","doi":"10.1111/ele.70397","DOIUrl":"10.1111/ele.70397","url":null,"abstract":"Plants employ multiple strategies to adapt to their growth environment. Characterizing key dimensions in plant trait space is important for understanding functional diversity within ecosystems. Leaf and root functional traits have been studied in the context of resource economics, but whether they covary, and through which mechanisms, is still debated. We investigated this in subtropical forests by sampling root and leaf traits on individuals of co-existing species in two communities with different resource availability. We found largely non-correlated variation between leaf and fine root traits both across and within communities, and a clear decoupling between leaf economic spectrum and root economic space, independent of evolutionary history. Our results suggest that leaf-root trait relationships are shaped by an interplay between microenvironmental heterogeneity that drives decoupling and shared selection pressures promoting covariation. The interplay explains the weak observed coordination and highlights the importance of environmental context in predicting above- and below-ground plant functions.","PeriodicalId":161,"journal":{"name":"Ecology Letters","volume":"29 5","pages":"e70397"},"PeriodicalIF":7.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147986058","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