American Naturalist最新文献_第5页

Upcycling in the Hawaiian Islands: Native Forest Birds Commonly Engage in Nest Material Kleptoparasitism. 夏威夷群岛的升级回收：原生森林鸟类通常会参与鸟巢材料盗窃寄生。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-06-01 Epub Date: 2026-04-08 DOI: 10.1086/740144

Erin E Wilson Rankin, Jessie L Knowlton, David J Flaspohler, David T Rankin

引用次数: 0

Disturbance Interacts with Dispersal and Niche Breadth to Shape Scale-Dependent Diversity Change in Metacommunities. 干扰与扩散和生态位宽度相互作用，形成元群落尺度依赖性多样性变化。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-06-01 Epub Date: 2026-04-16 DOI: 10.1086/739955

Zachary Hajian-Forooshani, Jonathan M Chase

{"title":"Disturbance Interacts with Dispersal and Niche Breadth to Shape Scale-Dependent Diversity Change in Metacommunities.","authors":"Zachary Hajian-Forooshani, Jonathan M Chase","doi":"10.1086/739955","DOIUrl":"10.1086/739955","url":null,"abstract":"AbstractEnvironmental disturbance can drive biodiversity change at both local (α) and regional (γ) scales, yet its effects on spatial turnover (β diversity) are often inconsistent. Using a process-based metacommunity model, we show how dispersal and niche breadth jointly structure scale-dependent diversity dynamics in response to disturbance. Our results reveal that dispersal determines the balance of diversity loss between α and γ scales, leading to either homogenization (β diversity decreases) or differentiation (β diversity increases) after disturbance. High dispersal promotes rapid local recovery but accelerates regional extinctions, while dispersal limitation impedes recolonization. Niche breadth mediates sensitivity to disturbance, with specialist-dominated communities suffering greater diversity loss. We show how the interaction between dispersal and niche breadth structure the dynamics of scale-specific diversity dynamics, which determine β diversity change following disturbance. These results offer a mechanistic framework for predicting when and how communities reorganize across scales following environmental perturbation.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"207 6","pages":"838-850"},"PeriodicalIF":2.7,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148037210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

The Geometry of Macroevolution: Phenotypic Evolution on Non-Euclidean Manifolds. 宏观进化的几何：非欧几里得流形上的表型进化。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-06-01 Epub Date: 2026-03-23 DOI: 10.1086/740145

James D Boyko, Daniel L Rabosky

{"title":"The Geometry of Macroevolution: Phenotypic Evolution on Non-Euclidean Manifolds.","authors":"James D Boyko, Daniel L Rabosky","doi":"10.1086/740145","DOIUrl":"10.1086/740145","url":null,"abstract":"AbstractPhylogenetic comparative methods typically rely on an often unstated and potentially unrealistic assumption: that phenotypes evolve within a flat Euclidean space. We advocate for explicitly considering the \"geometry of macroevolution,\" proposing that complex developmental and genetic constraints may cause phenotypes to evolve on curved, non-Euclidean manifolds. On such manifolds, the shortest path between two forms (the geodesic) is not a straight line. We demonstrate how measuring evolutionary divergence on a curved manifold with an inappropriate Euclidean metric can systematically underestimate true path lengths, creating analytical artifacts. Specifically, this geometric distortion can produce the appearance of declining evolutionary rates over time, offering a novel complementary explanation for widely observed patterns like age-rate scaling. Characterizing this geometry can be approached through a priori theoretical models or empirically through data-driven manifold learning. The convergence of large-scale phenomic datasets and machine learning is making it increasingly feasible to infer this geometric structure directly from data. Our goal is to encourage the field to move from implicitly assuming a geometry to deliberately characterizing it, ensuring that inferred macroevolutionary patterns reflect biological reality rather than the constraints of our analytical framework.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"207 6","pages":"751-762"},"PeriodicalIF":2.7,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148037206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Are There Ecological Consequences of Urban Adaptation? A Test of Eco-Evolutionary Dynamics in a Terrestrial Isopod (Oniscus asellus). 城市适应有生态后果吗？陆生等足动物（Oniscus asellus）的生态进化动力学试验。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-06-01 Epub Date: 2026-04-16 DOI: 10.1086/739747

Aaron R Yilmaz, Grace Bellino, Ryan A Martin

{"title":"Are There Ecological Consequences of Urban Adaptation? A Test of Eco-Evolutionary Dynamics in a Terrestrial Isopod (Oniscus asellus).","authors":"Aaron R Yilmaz, Grace Bellino, Ryan A Martin","doi":"10.1086/739747","DOIUrl":"10.1086/739747","url":null,"abstract":"AbstractUrbanization affects many aspects of the environment with the potential to alter both ecological and evolutionary processes. However, while examples of urban evolution are accumulating, tests of urban eco-evolutionary dynamics are rare. We carried out a reciprocal transplantation experiment using the terrestrial isopod Oniscus asellus to test how adaptation to the urban heat island influenced ecological processes. As isopods are important decomposers, we asked whether leaf-litter decomposition differed among reciprocal transplant treatments and used a separate laboratory experiment to isolate the effects of temperature on rates of isopod leaf consumption. We found that leaf-litter decomposition was greater in urban habitats and that leaf consumption was elevated at higher laboratory temperatures and for rural isopods compared with urban isopods. Although we found evidence for local adaptation to both environments, fitness was lower overall within urban environments. However, urban adaptation did not feed back to influence leaf decomposition. As fitness was depressed in urban environments, our results suggest that populations could struggle to keep pace with anthropogenic change. Additionally, our results for leaf-litter decomposition indicate that the warmed environment of cities has the potential to alter important ecological processes but that contemporary urban adaptation does not necessarily cause further urban eco-evolutionary feedbacks.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"207 6","pages":"771-784"},"PeriodicalIF":2.7,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148037187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Antifragility: A Cross-Cutting Concept for Understanding Ecological Responses to Variability. 反脆弱性：理解生态对可变性反应的跨领域概念。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-06-01 Epub Date: 2026-03-20 DOI: 10.1086/740143

Jonas Wickman, Christopher A Klausmeier, Elena Litchman

引用次数: 0

The Fecundity-Longevity Trade-Off in a Clonal Eusocial Insect: In Isolation, Subordinate Workers Match Dominants in Reproduction. 克隆性社会性昆虫的繁殖力-寿命权衡：在隔离状态下，从属工蜂在繁殖中与优势工蜂匹配。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-06-01 Epub Date: 2026-03-19 DOI: 10.1086/739956

Piuli Shit, Jürgen Heinze, Abel Bernadou

{"title":"The Fecundity-Longevity Trade-Off in a Clonal Eusocial Insect: In Isolation, Subordinate Workers Match Dominants in Reproduction.","authors":"Piuli Shit, Jürgen Heinze, Abel Bernadou","doi":"10.1086/739956","DOIUrl":"10.1086/739956","url":null,"abstract":"AbstractReproductive division of labor (DOL) is key to the ecological success of eusocial insects such as ants, termites, and honeybees, in which queens reproduce while workers perform nonreproductive tasks. DOL is often associated with a shift in the fecundity-longevity trade-off, with queens outliving nonreproductive workers. In most species, reproductive and nonreproductive individuals differ significantly (e.g., in ontogeny or morphology), which may contribute to this phenomenon. In contrast, in the ant Platythyrea punctata, females are clonally identical, and socially dominant workers produce female offspring from unfertilized eggs by thelytokous parthenogenesis. We investigated whether all workers-that is, dominants and subordinates-reproduce when given the opportunity. We formed dyads of workers of the same age and allowed them to establish rank orders. We then investigated their reproductive performance in isolation. We found that nearly 88% of workers regardless of social rank activated their ovaries in isolation. However, of the 12% that never laid eggs, a higher proportion were previously classified as subordinates than as dominants. This suggests that reproductive ability may differ among workers. Isolated subordinates that were reproductively active matched isolated dominants in their egg-laying rate, with no apparent trade-off between fecundity and longevity. Reproductive costs, likely related to the use of physiological or energetic resources, were evident for both workers in isolation, as egg-laying rates declined over time in the absence of supportive workers. These results highlight the complex interplay between reproduction, longevity, and social status in eusocial insects and provide insights into how eusociality has shaped aging and life history evolution.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"207 6","pages":"851-859"},"PeriodicalIF":2.7,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148037182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Front and Back Matter. 正面和背面物质。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-06-01 Epub Date: 2026-05-26 DOI: 10.1086/742305

引用次数: 0

Species Traits Mediate Environmental Responses but Not Conspecific Density Dependence in Tropical Tree Saplings. 物种性状介导热带树苗的环境响应，而非同种密度依赖。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-05-01 Epub Date: 2026-03-06 DOI: 10.1086/739608

Xiaohua Ma, Rong Gu, Guoshan Shi, Feng Liu, Guanghong Cao, Yun Deng, Shangwen Xia, Xiaodong Yang, Zhiming Zhang, Luxiang Lin

{"title":"Species Traits Mediate Environmental Responses but Not Conspecific Density Dependence in Tropical Tree Saplings.","authors":"Xiaohua Ma, Rong Gu, Guoshan Shi, Feng Liu, Guanghong Cao, Yun Deng, Shangwen Xia, Xiaodong Yang, Zhiming Zhang, Luxiang Lin","doi":"10.1086/739608","DOIUrl":"10.1086/739608","url":null,"abstract":"AbstractUnderstanding how functional traits mediate species-specific responses to environmental variation and neighborhood interaction is fundamental for linking individual performance to community assembly. We used a hierarchical framework to examine how functional traits along the acquisitive-conservative spectrum mediate growth responses to environmental effects and density dependence. We monitored the growth of 16,717 saplings from 115 tree species over 5 years in a tropical rainforest and measured 10 functional traits reflecting the acquisitive-conservative spectrum. We employed Bayesian hierarchical models to quantify the relative importance of environmental and density factors on sapling growth and investigate how functional traits mediate species-specific responses to these factors. Sapling growth rates were primarily influenced by soil conditions, light availability (canopy closure), and conspecific adult neighbor density. Acquisitive species exhibited enhanced growth under high light, favorable soil resources, and low aluminum conditions compared with conservative species. However, we found no significant relationship between functional traits and conspecific density dependence. Functional traits mediate environmental responses through divergent resource use strategies rather than conspecific density dependence. Trait-based mechanisms underlying species coexistence may operate through pathways beyond the acquisitive-conservative spectrum. Our hierarchical modeling provides a framework for disentangling the complex relationships between functional traits, environmental responses, and density dependence in diverse tropical forests.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"207 5","pages":"710-727"},"PeriodicalIF":2.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147788349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Exploring the Genotype-to-Phenotype Map Using Quantifiable Patterns in Metazoan Genomic and Morphological Data. 利用后生动物基因组和形态学数据的可量化模式探索基因型-表型图谱。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-05-01 Epub Date: 2026-03-19 DOI: 10.1086/739490

Kevin J Peterson, Alexander W Clarke, Grygoriy Zolotarov, Bradley Deline, Trevor D Lamb, Mark A McPeek, Pedro Martinez, Bastian Fromm

{"title":"Exploring the Genotype-to-Phenotype Map Using Quantifiable Patterns in Metazoan Genomic and Morphological Data.","authors":"Kevin J Peterson, Alexander W Clarke, Grygoriy Zolotarov, Bradley Deline, Trevor D Lamb, Mark A McPeek, Pedro Martinez, Bastian Fromm","doi":"10.1086/739490","DOIUrl":"10.1086/739490","url":null,"abstract":"AbstractA prevailing problem in evolutionary biology is elucidating the genotype-to-phenotype map that characterizes how genomic activities regulate different aspects of organismal morphology and their variability in both space and time. Here, we explore potential causality between genome content and both morphological complexity and disparity by compiling the regulatory components (i.e., transcription factors, RNA-binding proteins, and microRNA families) as well as a representative set of nonregulatory housekeeping genes in 32 species belonging to a wide variety of animal phyla spanning a range of morphological, ecological, and genomic characteristics. A principal component analysis of these four nonoverlapping genomic components from each of these 32 species in relation to their last common ancestor revealed that no relationship exists between genome space and disparity, as changes to animal body plans appear to be largely the result of changes to the regulatory networks that govern animal development rather than gaining or losing specific sets of regulatory genes. However, using both phylogenetically correlated and phylogenetically uncorrelated statistical tests, we find a strong relationship between the loss of all considered gene types in some parasitic taxa, an exacerbation of a trend that characterizes animal genomes in general. We also find a strong correlation, and a likely causal relationship, between microRNA innovations and organismal complexity. While this analysis of genomic features suggests how complexity and disparity are each encoded in the genome, further analysis of the regulatory networks in which they participate should provide a more comprehensive description of how organisms diversify their morphologies through time.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"207 5","pages":"666-692"},"PeriodicalIF":2.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147788263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Density Dependence Impacts Our Understanding of Population Resilience. 密度依赖影响我们对人口弹性的理解。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-05-01 Epub Date: 2026-03-06 DOI: 10.1086/739605

Christina M Hernández, Iain Stott, David N Koons, Roberto Salguero-Gómez

{"title":"Density Dependence Impacts Our Understanding of Population Resilience.","authors":"Christina M Hernández, Iain Stott, David N Koons, Roberto Salguero-Gómez","doi":"10.1086/739605","DOIUrl":"10.1086/739605","url":null,"abstract":"AbstractCurrent metrics of demographic resilience (e.g., resistance, recovery) summarize how populations respond to the frequent, varied disturbances that ecological systems experience. Much of the application of these metrics has focused on the potential response of populations represented by time-invariant, density-independent structured population models to hypothetical disturbances. Here, we show that density dependence has profound and complex impacts on our understanding of resilience. We examine resilience measures in a flexible structured model with five vital rate parameters (juvenile survival, adult survival, juvenile progression, adult retrogression, and adult reproductive output) with density dependence operating on one vital rate at a time. Depending on which vital rate was subject to density effects, existing measures of demographic resilience (compensation, resistance, and recovery time) either increased or decreased with population density. Moreover, the density-independent model underpredicted the recovery time of the corresponding density-dependent model, with a greater offset for species with longer generation times and higher iteroparity. Our findings demonstrate the importance of underlying nonlinear processes when examining demographic resilience, particularly if we hope to predict how natural populations will respond to real disturbances.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"207 5","pages":"693-709"},"PeriodicalIF":2.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147788261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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