American Naturalist最新文献_第2页

Abundance and Functional Roles, Not Richness, Govern Wood-Fall Degenerative Ecosystem Function in the Deep Sea. 丰度和功能角色，而不是丰富度，支配着深海木材退化生态系统功能。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-09-01 Epub Date: 2026-03-26 DOI: 10.1086/741526

Craig R McClain, Mark Genung, Corie M Boolukos, S River D Bryant, Granger W Hanks, Avery S Hiley, James R Junker, Philip J Manlick, Clifton Nunnally, Chiara Romano, Greg W Rouse, John P Whiteman, Seth D Newsome

{"title":"Abundance and Functional Roles, Not Richness, Govern Wood-Fall Degenerative Ecosystem Function in the Deep Sea.","authors":"Craig R McClain, Mark Genung, Corie M Boolukos, S River D Bryant, Granger W Hanks, Avery S Hiley, James R Junker, Philip J Manlick, Clifton Nunnally, Chiara Romano, Greg W Rouse, John P Whiteman, Seth D Newsome","doi":"10.1086/741526","DOIUrl":"10.1086/741526","url":null,"abstract":"AbstractBiological diversity is widely recognized as a key driver of ecosystem function, yet the mechanisms underlying biodiversity-ecosystem function (BEF) relationships in natural systems, particularly for regenerative processes, remain poorly understood. We examined the BEF relationship in deep-sea xylophagous bivalve communities using 63 experimental wood falls deployed ∼2,000 m deep in the Gulf of Mexico. This system allowed us to combine natural community assembly with controlled wood-fall deployments to examine how trophic partitioning, species dominance, and community-level properties influence total wood consumption, our metric of ecosystem function. We identified 26,324 individuals from 12 xylophagous bivalve species, which occupied complementary trophic niches, although their contributions to wood consumption varied substantially. Wood consumption increased with total abundance and, to a lesser extent, species richness, but richness effects largely reflected underlying variation in abundance. Analyses using the Price equation and species randomization approaches revealed that ecosystem function was primarily driven by a core group of abundant species, with occasional nonrandom contributions from rare species. These results indicate that in naturally assembled deep-sea communities, total abundance and key species' functional capacity outweigh species richness or phylogenetic diversity as predictors of ecosystem function, emphasizing the importance of individual species roles in shaping BEF relationships.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"208 3","pages":"261-277"},"PeriodicalIF":2.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148801104","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 : 2026-09-01 Epub Date: 2026-08-20 DOI: 10.1086/743605

引用次数: 0

Spark, Scaffold, Substrate: The Multiple Hidden Roles of Natural History in Ecology and Evolutionary Biology. 火花、支架、基质：自然历史在生态学和进化生物学中的多重隐藏角色。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-09-01 Epub Date: 2026-04-10 DOI: 10.1086/741683

Hari Sridhar, Joyshree Chanam, Priyanka Hariharan

{"title":"Spark, Scaffold, Substrate: The Multiple Hidden Roles of Natural History in Ecology and Evolutionary Biology.","authors":"Hari Sridhar, Joyshree Chanam, Priyanka Hariharan","doi":"10.1086/741683","DOIUrl":"10.1086/741683","url":null,"abstract":"AbstractOver the last 30 years, as ecology and evolutionary biology (EEB) has become more theoretical, experimental, and data driven, there has been a growing worry that the space for natural history (i.e., the direct observation of organisms in their environments) has shrunk. The jury is still out on whether such a worry is well founded. On the one hand, quantitative evidence for natural history's decline is equivocal, and numerous journals continue to publish natural history. On the other hand, the recent introduction of separate sections for natural history by many prominent EEB journals does suggest an ongoing separation between natural history and mainstream EEB. This debate, however, has so far focused mainly on the fate of natural history in the foreground, that is, intentionally and systematically collected natural history information that is made visible in scientific articles. In this article, we draw attention to hidden natural history in EEB research, that is, that which works in the background and remains hidden from view because it is written out of scientific articles. Here, by leveraging a collection of backstory oral history interviews anchored around famous scientific articles in EEB, we make visible and describe three roles for background natural history in EEB: (1) as spark (motivating research questions and hypothesis), (2) as scaffold (supporting the conduct of studies), and (3) as substrate (serving as raw material for new research). We examine how accounting for hidden natural history shifts the conversation around natural history's decline and explore the potential epistemic implications that arise from such natural history being hidden.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"208 3","pages":"235-249"},"PeriodicalIF":2.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148801064","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

Emergent Periodical Cicada Nymphs Use Skototaxis to Navigate to Trees. 紧急周期蝉若虫使用滑行导航到树上。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-09-01 Epub Date: 2026-03-20 DOI: 10.1086/741447

Martha R Weiss, Sean B Menke, Pablo Frank-Bolton, Mariana Abarca, John T Lill

引用次数: 0

Impacts of Harvest Removal on Mesocarnivore Territorial Dynamics Captured by Mechanistic Home Range Analysis. 机械化家园范围分析捕获的收获对中食肉动物领土动态的影响。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-09-01 Epub Date: 2026-04-01 DOI: 10.1086/741600

Derek A Arnold, Jonathan R Potts, Knut Kielland, Greg A Breed

{"title":"Impacts of Harvest Removal on Mesocarnivore Territorial Dynamics Captured by Mechanistic Home Range Analysis.","authors":"Derek A Arnold, Jonathan R Potts, Knut Kielland, Greg A Breed","doi":"10.1086/741600","DOIUrl":"10.1086/741600","url":null,"abstract":"AbstractTerritorial behavior plays a key role in shaping the emergent population dynamics and spatial distribution of animal species, yet given its complexity, our understanding of the mechanisms driving territorial formation remains limited. This study used an integrated step selection analysis and a complete territorial location dataset to parameterize a mechanistic home range analysis (MHRA) model, allowing an examination of territorial dynamics in Canada lynx (Lynx canadensis) at a population peak. MHRA models were parameterized using data from two study sites, allowing an analysis of territorial formation and movement under contrasting harvest regimes. In an unharvested region, the model successfully predicted the behavior of a nonterritorial individual that used a mix of territorial space and poor-quality (unoccupied) habitat. In the high-harvest region, the model correctly predicted neighboring lynx response to an observed territorial shift following the harvest of a territorial lynx. This predictive accuracy suggests that territorial behaviors in this cyclically fluctuating species are driven by the interplay among territorial saturation, prey availability, and human exploitation. This approach provides a framework for understanding territorial processes grounded in individual movement patterns while offering insights relevant to population ecology and wildlife management across territorial species.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"208 3","pages":"299-313"},"PeriodicalIF":2.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148801107","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

When Correcting for Regression to the Mean Is Worse Than No Correction at All. 当修正回归均值比根本不修正更糟糕时。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-09-01 Epub Date: 2026-04-01 DOI: 10.1086/741601

José F Fontanari, Mauro Santos

{"title":"When Correcting for Regression to the Mean Is Worse Than No Correction at All.","authors":"José F Fontanari, Mauro Santos","doi":"10.1086/741601","DOIUrl":"10.1086/741601","url":null,"abstract":"AbstractThe ubiquitous regression to the mean (RTM) effect complicates statistical inference regarding the relationship between baseline levels of a biological variable and its subsequent change. We demonstrate that common RTM correction methods are problematic: the Berry et al. method, popularized by Kelly and Price in The American Naturalist, is unreliable for hypothesis testing or effect size estimation, leading to systematic bias and inflated error rates. Conversely, while the Blomqvist method is theoretically unbiased, its high sampling variance limits its practical utility in small to moderate datasets. Using a structural linear model, we show that the most robust approach to navigating RTM is not to correct the data but to evaluate the uncorrected crude slope against a structural null expectation derived from measurement repeatability-the proportion of total variance attributable to true individual differences. We illustrate this approach using empirical data from studies of lizard thermal physiology and bird telomere dynamics. Ultimately, we argue that any conclusion regarding a differential treatment effect is statistically unfounded without a clear understanding of the experiment's repeatability.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"208 3","pages":"314-331"},"PeriodicalIF":2.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148801039","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

Eco-Evolutionary Dynamics of Infection and Immunity in Experimentally Founded Lake Populations of Threespine Stickleback. 湖泊实验种群三刺鱼感染和免疫的生态进化动态。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-09-01 Epub Date: 2026-04-10 DOI: 10.1086/741682

Daniel I Bolnick, Lucas Eckert, Rowan D H Barrett, Emma Choi, Grant Haines, Andrew P Hendry, Emily V Kerns, Åsa J Lind, Kathryn Milligan-McClellan, Catherine L Peichel, Kristofer T Sasser, Alice R Thornton, Cole Wolf, Natalie C Steinel, Jesse N Weber

{"title":"Eco-Evolutionary Dynamics of Infection and Immunity in Experimentally Founded Lake Populations of Threespine Stickleback.","authors":"Daniel I Bolnick, Lucas Eckert, Rowan D H Barrett, Emma Choi, Grant Haines, Andrew P Hendry, Emily V Kerns, Åsa J Lind, Kathryn Milligan-McClellan, Catherine L Peichel, Kristofer T Sasser, Alice R Thornton, Cole Wolf, Natalie C Steinel, Jesse N Weber","doi":"10.1086/741682","DOIUrl":"10.1086/741682","url":null,"abstract":"AbstractHost-parasite interactions are likely to involve eco-evolutionary feedbacks. Parasites can impose strong selection on host immune traits. Evolution of these traits can suppress parasite abundance, which alters the strength of selection. Such eco-evo feedbacks can be hard to document in natural settings, where long-term interactions may have converged on relatively stable equilibria. However, when a species disperses into an unoccupied habitat, it can experience altered parasite abundance (e.g., enemy release) or encounter new parasite genotypes. These perturbations may be followed by observable eco-evolutionary dynamics as the newly assembled host-parasite communities interact and evolve. To test this hypothesis, we experimentally founded nine whole-lake populations of threespine stickleback and tracked changes in the prevalence of a parasite (Schistocephalus solidus) and a heritable host immune trait (fibrosis) for 7 years. In native source lakes, among-population differences in tapeworm prevalence and fibrosis were relatively stable across years, suggesting there are alternative eco-evolutionary equilibria. In contrast, the experimentally founded populations initially exhibited enemy release, followed by strong year-to-year fluctuations in infection and fibrosis. In lakes with high initial infection rates, fibrosis subsequently increased in severity, suppressing infections. Conversely, low fibrosis was followed by increased parasite prevalence. This temporal autocorrelation between parasite prevalence and immune traits weakened over time. These results are consistent with the existence of transient eco-evolutionary dynamics between host and parasite in newly founded populations.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"208 3","pages":"278-298"},"PeriodicalIF":2.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13495988/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148801081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Heterogeneous Predation, Community Asynchrony, and Metacommunity Stability in Cyanobacterial Mats. 蓝藻垫的异质捕食、群落不同步和元群落稳定性。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-09-01 Epub Date: 2026-03-26 DOI: 10.1086/741527

Ethan C Cissell, Sophie J McCoy

引用次数: 0

Conserved Polymorphism, Fossils, and the Macroevolutionary Reach of Microevolution. 保守多态性、化石和微观进化的宏观进化范围。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-08-01 Epub Date: 2026-02-12 DOI: 10.1086/740891

Gabriel S Bever, Jacob Wilson, William Foster, Fernando Torres, Donald Cerio, E J Huang

{"title":"Conserved Polymorphism, Fossils, and the Macroevolutionary Reach of Microevolution.","authors":"Gabriel S Bever, Jacob Wilson, William Foster, Fernando Torres, Donald Cerio, E J Huang","doi":"10.1086/740891","DOIUrl":"10.1086/740891","url":null,"abstract":"AbstractCharles Darwin established modern evolutionary biology with his insight that the engine of global biodiversity is fueled by individual differences inherent to all populations. One hundred and sixty-seven years later, the concepts and mechanisms that bridge this macro- to microevolutionary spectrum remain highly sought after. In this essay, we explore phenotypic evolution at the interface of micro- and macroevolution from the perspective of morphology-based systematics by addressing the hypothesis that intraspecific polymorphism can be phylogenetically conserved. We begin by setting a theoretical footing for this \"multispecies zone of polymorphism\" by synthesizing recent contributions from population biology and phylogenomics regarding the timescale of microevolutionary dynamics. Next, we derive from this hypothesis predictions that can be tested with broad-based phenotypic sampling and discuss how these predictions align with expected patterns of homoplasy. We then use paleontology and its unique sampling potential as a lens to examine how conserved polymorphism may be shaping macroevolutionary inferences and outline future work. These efforts emphasize that the micro-macro interface remains a critical yet understudied aspect of phenotypic evolution with potentially far-reaching implications. The benefits of resolving these dynamics extend well beyond the best practices of phylogenetic reconstruction, as they reflect the very nature of the micro-macroevolutionary dichotomy in evolutionary theory.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"208 2","pages":"127-147"},"PeriodicalIF":2.7,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148581014","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

Positional Intraclutch Variation in Egg Shape Associated with Maternal Guarding in a Shield Bug. 盾蝽卵形的位置内孵变异与母体保护有关。

IF 2.7 2区环境科学与生态学

American Naturalist Pub Date : 2026-08-01 Epub Date: 2026-03-02 DOI: 10.1086/741119

Hirotaka Masamoto, Takahiro Hosokawa, Shin-Ichi Kudo

引用次数: 0