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Does Parental Care Modify the Association of Early-Life Size and Growth with Physiology? 亲代抚育是否会改变婴儿早期体型和生长与生理的关系?
IF 2.4 2区 环境科学与生态学
American Naturalist Pub Date : 2025-05-01 Epub Date: 2025-03-24 DOI: 10.1086/734993
Zachary M Laubach, Sage A Madden, Aleea Pardue, Rebecca J Safran
{"title":"Does Parental Care Modify the Association of Early-Life Size and Growth with Physiology?","authors":"Zachary M Laubach, Sage A Madden, Aleea Pardue, Rebecca J Safran","doi":"10.1086/734993","DOIUrl":"https://doi.org/10.1086/734993","url":null,"abstract":"<p><p>AbstractSize and growth early in life are associated with physiological development, and these traits influence fitness. Life history theory predicts that the relationship between traits reflect constraints involving allocation and acquisition of resources. Using longitudinal data from 113 wild nestling barn swallows (<i>Hirundo rustica erythrogaster</i>), we first characterized developmental changes in glucose metabolism, a physiological trait involved in energy mobilization and response to stress. Next, we tested hypotheses from life history theory about allocation and acquisition of resources based on associations of nestling size and growth with glucose physiology and assessed whether these relationships are modified by parental care. Larger nestlings had higher baseline blood glucose and larger magnitude of change in glucose in response to a stressor than smaller nestlings. Furthermore, the relationship in which greater growth was associated with a stronger stress response, as indicated by a larger magnitude of increase in glucose levels, was most pronounced among birds in nests that received the lowest amount of parental care. These results suggest that physiological constraints may contribute to the early-life disadvantage of slow growth, especially in the context of lower parental care. While these findings are inconsistent with a trade-off involving differential allocation of resources between life history traits, they align with the differential acquisition hypothesis.</p>","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"205 5","pages":"469-484"},"PeriodicalIF":2.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144004311","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
Understanding Interindividual Social Networks in Mixed-Species Bird Flocks. 了解混种鸟群中个体间的社会网络。
IF 2.4 2区 环境科学与生态学
American Naturalist Pub Date : 2025-05-01 Epub Date: 2025-03-17 DOI: 10.1086/735017
Akshay Bharadwaj, Aiti Thapa, Akshiti Bhat, Aman Biswakarma, Bharath Tamang, Binod Munda, Biren Biswakarma, Dambar K Pradhan, Dema Tamang, Kabir Pradhan, Mangal K Rai, Pawan Chamling Rai, Rohit Rai, Shambu Rai, Umesh Srinivasan
{"title":"Understanding Interindividual Social Networks in Mixed-Species Bird Flocks.","authors":"Akshay Bharadwaj, Aiti Thapa, Akshiti Bhat, Aman Biswakarma, Bharath Tamang, Binod Munda, Biren Biswakarma, Dambar K Pradhan, Dema Tamang, Kabir Pradhan, Mangal K Rai, Pawan Chamling Rai, Rohit Rai, Shambu Rai, Umesh Srinivasan","doi":"10.1086/735017","DOIUrl":"https://doi.org/10.1086/735017","url":null,"abstract":"<p><p>AbstractMixed-species flocks (MSFs) are an important form of animal social organization. Most studies examine MSFs at the species level, notwithstanding that social interactions occur between individuals. Empirical studies of multispecies, individual-level MSF social networks have seldom been undertaken. In this study, we use mist netting, color banding, and standardized observations to construct individual-level social networks for MSFs in the Eastern Himalaya. We describe two distinct flocktypes comprising two sets of understory species. Our social network analyses and spatial visualization suggest that the pattern of individual-level co-occurrences differs between these flocktypes and with previously described Neotropical MSFs. One flocktype has a multi-individual territorial network among individuals of its central species, while the other is led by a species with no apparent social structure. Furthermore, the addition of associating species has opposite impacts on the modularity of the two different social networks. Our study provides novel insights into MSFs at the individual level.</p>","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"205 5","pages":"528-536"},"PeriodicalIF":2.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144027087","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
Anthocyanin Impacts Multiple Plant-Insect Interactions in a Carnivorous Plant. 花青素对食肉植物中多种植物-昆虫相互作用的影响。
IF 2.4 2区 环境科学与生态学
American Naturalist Pub Date : 2025-05-01 Epub Date: 2025-03-24 DOI: 10.1086/735010
Sylvie A Martin-Eberhardt, Marjorie G Weber, Kadeem J Gilbert
{"title":"Anthocyanin Impacts Multiple Plant-Insect Interactions in a Carnivorous Plant.","authors":"Sylvie A Martin-Eberhardt, Marjorie G Weber, Kadeem J Gilbert","doi":"10.1086/735010","DOIUrl":"https://doi.org/10.1086/735010","url":null,"abstract":"<p><p>AbstractAlthough there are many hypothesized ecological functions of plant coloration, they have been only partly resolved by examining ecological hypotheses in isolation. Multiple ecological interactions may act in concert or in opposition to fix or maintain variation in plant coloration, that is, via ecological pleiotropy. To investigate the adaptive value of red plant pigment (anthocyanin) in a carnivorous plant, we compared insect prey capture, herbivore damage, and recruitment of specialist insect larvae in naturally occurring sympatric red and green color morphs of the pitcher plant <i>Sarracenia purpurea</i>. We integrated field and laboratory bioassays, visual modeling, chemical analysis of anthocyanins, and a long-term demographic study to investigate multiple ways anthocyanins mediate plant-insect interactions. In support of ecological pleiotropy, each morph performed better in one or more ecological contexts, providing evidence for ecological interactions exerting opposing selection on plant color and thus maintaining variation. The mixture of both ecological benefits and costs to anthocyanin production is further supported by stable color polymorphism and seed set data consistent with balancing selection. More broadly, this work reveals the impacts of a single anthocyanin compound on multiple key plant-insect interactions, demonstrating evidence for ecological pleiotropy maintaining intraspecific diversity in plant color.</p>","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"205 5","pages":"502-515"},"PeriodicalIF":2.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144042821","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
Partial Migration, Oversummering, and Intermittent Breeding by Shorebirds. 滨鸟的部分迁徙、过夏和间歇繁殖。
IF 2.4 2区 环境科学与生态学
American Naturalist Pub Date : 2025-04-01 Epub Date: 2025-02-10 DOI: 10.1086/734101
Ronald C Ydenberg
{"title":"Partial Migration, Oversummering, and Intermittent Breeding by Shorebirds.","authors":"Ronald C Ydenberg","doi":"10.1086/734101","DOIUrl":"10.1086/734101","url":null,"abstract":"<p><p>AbstractIndividuals of some long-distance migrant shorebird species may remain on or near nonbreeding areas in place of making a breeding migration. Existing hypotheses associate oversummering with factors that impair successful migration and breeding. The hypothesis developed here takes a life history trade-off perspective. Based on the idea that survival while oversummering is higher than that of migration and breeding, it predicts that oversummering evolves when the survival advantage compensates in fitness terms for the reproduction foregone by doing so. Adults have higher reproductive success and so oversummer less readily than do yearlings. If the oversummering survival gain is similar to the threshold level of compensation required, interindividual variation in condition may place some individuals above and others below the threshold for oversummering. Partial oversummering can result. This theory accurately predicts the strong contrast in oversummering patterns observed in Peru for both adult and yearling semipalmated <i>Calidris pusilla</i> and western sandpipers <i>C. mauri</i>, otherwise very similar species. Delayed maturity (i.e., oversummering by yearlings) and intermittent breeding (partial oversummering by adults) strongly affect population productivity. These behaviors may have increased over recent decades and hence could be contributing to the steep declines being reported for some shorebird species.</p>","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"205 4","pages":"361-370"},"PeriodicalIF":2.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143781304","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
Evolutionary Lability of Sexual Selection and Its Implications for Speciation and Macroevolution. 性选择的进化不稳定性及其对物种形成和宏观进化的影响。
IF 2.4 2区 环境科学与生态学
American Naturalist Pub Date : 2025-04-01 Epub Date: 2025-03-06 DOI: 10.1086/734457
Matheus Januario, Renato C Macedo-Rego, Daniel L Rabosky
{"title":"Evolutionary Lability of Sexual Selection and Its Implications for Speciation and Macroevolution.","authors":"Matheus Januario, Renato C Macedo-Rego, Daniel L Rabosky","doi":"10.1086/734457","DOIUrl":"10.1086/734457","url":null,"abstract":"<p><p>AbstractSexual selection is widely hypothesized to facilitate speciation and phenotypic evolution, but evidence from comparative studies has been mixed. Many previous studies have relied on proxy variables to quantify the intensity of sexual selection, raising the possibility that inconclusive results may reflect, in part, the imperfect measurement of this evolutionary process. Here, we test the relationship between phylogenetic speciation rates and indices of the opportunity for sexual selection drawn from populations of 82 vertebrate taxa. These indices provide a much more direct assessment of sexual selection intensity than proxy traits and allow straightforward comparisons among distantly related clades. We find no correlation between the opportunity for sexual selection and speciation rate, and this result is consistent across many complementary analyses. In addition, widely used proxy variables-sexual dimorphism and dichromatism-are not correlated with the indices employed here. Moreover, we find that the opportunity for sexual selection has low phylogenetic signal and that intraspecific variability in selection indices for many species approaches the range of variation observed across all vertebrates as a whole. Our results potentially reconcile a major paradox in speciation biology at the interface between microevolution and macroevolution: sexual selection can be important for speciation, yet the evolutionary lability of the process over deeper timescales restricts its impact on broad-scale patterns of biodiversity.</p>","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"205 4","pages":"388-412"},"PeriodicalIF":2.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143781399","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
Dynamics of Mixed-Ploidy Populations under Demographic and Environmental Stochasticities. 人口和环境随机性条件下混合倍性种群的动态。
IF 2.4 2区 环境科学与生态学
American Naturalist Pub Date : 2025-04-01 Epub Date: 2025-02-18 DOI: 10.1086/734411
Michelle L Gaynor, Nicholas Kortessis, Douglas E Soltis, Pamela S Soltis, José Miguel Ponciano
{"title":"Dynamics of Mixed-Ploidy Populations under Demographic and Environmental Stochasticities.","authors":"Michelle L Gaynor, Nicholas Kortessis, Douglas E Soltis, Pamela S Soltis, José Miguel Ponciano","doi":"10.1086/734411","DOIUrl":"10.1086/734411","url":null,"abstract":"<p><p>AbstractThe population dynamics of autopolyploids-organisms with more than two genome copies of a single species-and their diploid progenitors have been extensively studied. The acquisition of multiple genome copies is heavily influenced by stochasticity, which strongly suggests the efficacy of a probabilistic approach to examine the long-term dynamics of a population with multiple cytotypes. Yet our current understanding of the dynamics of autopolyploid populations has not incorporated stochastic population dynamics and coexistence theory. To investigate the factors contributing to the probability and stability of coexisting cytotypes, we designed a new population dynamics model that incorporates demographic and environmental stochasticities to simulate the formation, establishment, and persistence of diploids, triploids, and autotetraploids in the face of gene flow among cytotypes. We found that increased selfing rates and pronounced reproductive isolation promote coexistence of multiple cytotypes. In stressful environments and with strong competitive effects among cytotypes, these dynamics are more complex; our stochastic modeling approach reveals the resulting intricacies that give autotetraploids competitive advantage over their diploid progenitors. Our work is foundational for a better understanding of the dynamics of coexistence of multiple cytotypes.</p>","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"205 4","pages":"413-434"},"PeriodicalIF":2.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143780229","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
Discovering Stochastic Dynamical Equations from Ecological Time Series Data. 从生态时间序列数据中发现随机动力学方程。
IF 2.4 2区 环境科学与生态学
American Naturalist Pub Date : 2025-04-01 Epub Date: 2025-02-27 DOI: 10.1086/734083
Arshed Nabeel, Ashwin Karichannavar, Shuaib Palathingal, Jitesh Jhawar, David B Brückner, Danny Raj M, Vishwesha Guttal
{"title":"Discovering Stochastic Dynamical Equations from Ecological Time Series Data.","authors":"Arshed Nabeel, Ashwin Karichannavar, Shuaib Palathingal, Jitesh Jhawar, David B Brückner, Danny Raj M, Vishwesha Guttal","doi":"10.1086/734083","DOIUrl":"10.1086/734083","url":null,"abstract":"<p><p>AbstractTheoretical studies have shown that stochasticity can affect the dynamics of ecosystems in counterintuitive ways. However, without knowing the equations governing the dynamics of populations or ecosystems, it is difficult to ascertain the role of stochasticity in real datasets. Therefore, the inverse problem of inferring the governing stochastic equations from datasets is important. Here, we present an equation discovery methodology that takes time series data of state variables as input and outputs a stochastic differential equation. We achieve this by combining traditional approaches from stochastic calculus with the equation discovery techniques. We demonstrate the generality of the method via several applications. First, we deliberately choose various stochastic models with fundamentally different governing equations, yet they produce nearly identical steady-state distributions. We show that we can recover the correct underlying equations, and thus infer the structure of their stability, accurately from the analysis of time series data alone. We demonstrate our method on two real-world datasets-fish schooling and single-cell migration-that have vastly different spatiotemporal scales and dynamics. We illustrate various limitations and potential pitfalls of the method and how to overcome them via diagnostic measures. Finally, we provide our open-source code via a package named PyDaDDy (<u>Py</u>thon Library for <u>Da</u>ta-<u>D</u>riven <u>Dy</u>namics).</p>","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"205 4","pages":"E100-E117"},"PeriodicalIF":2.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143781887","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
Availability of Juvenile Refuge Habitats Explains the Dynamics and Size Structure of Cannibalistic Fish Populations. 幼鱼避难所的可用性解释了食人鱼种群的动态和大小结构。
IF 2.4 2区 环境科学与生态学
American Naturalist Pub Date : 2025-04-01 Epub Date: 2025-02-18 DOI: 10.1086/734103
Wojciech Uszko, Tobias van Kooten, Pär Byström
{"title":"Availability of Juvenile Refuge Habitats Explains the Dynamics and Size Structure of Cannibalistic Fish Populations.","authors":"Wojciech Uszko, Tobias van Kooten, Pär Byström","doi":"10.1086/734103","DOIUrl":"10.1086/734103","url":null,"abstract":"<p><p>AbstractMany animals exhibit ontogenetic niche shifts as they grow, which strongly affects population dynamics. However, such niche shifts can be constrained by the physical environment that the population occupies. To study this, we develop a physiologically structured population model parameterized for brown trout and vary the availability of a stream used as an exclusive juvenile nursery habitat. We find fewer but large, fast-growing adults in lakes with small streams and more but smaller, slow-growing adults in lakes with large streams. We show that the mechanism behind this pattern is a reduced ability of cannibals to control juvenile survival in the lake with increasing stream availability. Juveniles emerging from the stream at larger sizes intensify competition with the lake-dwelling adults, leading to slower individual growth. These results are similar for other sources of size-dependent juvenile mortality in the lake. Field data from brown trout lakes across a stream size gradient show the same pattern: reduced trout growth and fewer large individuals in lakes with larger tributary streams. We show how ontogenetic niche shifts and stage-specific habitat availability affect population structure and dynamics through size-dependent mortality and competition. Our results provide an important foundation that may help design effective conservation and restoration strategies.</p>","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"205 4","pages":"371-387"},"PeriodicalIF":2.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143781885","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
Do Mixed-Species Groups Travel as One? An Investigation on Large African Herbivores Monitored Using Animal-Borne Video Collars. 混合物种群体是否作为一个整体旅行?对使用兽载视频项圈监测的非洲大型食草动物的调查。
IF 2.4 2区 环境科学与生态学
American Naturalist Pub Date : 2025-04-01 Epub Date: 2025-02-17 DOI: 10.1086/734410
Romain Dejeante, Marion Valeix, Simon Chamaillé-Jammes
{"title":"Do Mixed-Species Groups Travel as One? An Investigation on Large African Herbivores Monitored Using Animal-Borne Video Collars.","authors":"Romain Dejeante, Marion Valeix, Simon Chamaillé-Jammes","doi":"10.1086/734410","DOIUrl":"10.1086/734410","url":null,"abstract":"<p><p>AbstractAlthough prey foraging in mixed-species groups benefit from a reduced risk of predation, whether heterospecific groupmates move together in the landscape, and more generally to what extent mixed-species groups remain cohesive over time and space, remains unknown. Here, we used GPS collars with video cameras to investigate the movements of plains zebras (<i>Equus quagga</i>) in mixed-species groups. Blue wildebeest (<i>Connochaetes taurinus</i>), impalas (<i>Aepyceros melampus</i>), and giraffes (<i>Giraffa camelopardalis</i>) commonly form mixed-species groups with zebras in savanna ecosystems. We found that zebras adjust their movement decisions solely on the basis of the presence of giraffes, being more likely to move in zebra-giraffe herds, and this was correlated with a higher cohesion of such groups. Additionally, zebras moving with giraffes spent more time grazing, suggesting that zebras benefit from foraging in the proximity of giraffes. Our results provide new insights into animal movements in mixed-species groups, contributing to a better consideration of mutualism in movement ecology.</p>","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"205 4","pages":"451-458"},"PeriodicalIF":2.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143781889","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
Vertical Niche Partitioning and the Performance of Mixotrophic Generalists against Autotrophic and Heterotrophic Specialists under Contrasting Light-Nutrient Supply Regimes. 在不同的光营养供应制度下,垂直生态位分配和混合营养多面手对自养和异养专家的表现
IF 2.4 2区 环境科学与生态学
American Naturalist Pub Date : 2025-04-01 Epub Date: 2025-02-12 DOI: 10.1086/734553
Philippe Le Noac'h, Sebastian Diehl, Beatrix E Beisner
{"title":"Vertical Niche Partitioning and the Performance of Mixotrophic Generalists against Autotrophic and Heterotrophic Specialists under Contrasting Light-Nutrient Supply Regimes.","authors":"Philippe Le Noac'h, Sebastian Diehl, Beatrix E Beisner","doi":"10.1086/734553","DOIUrl":"10.1086/734553","url":null,"abstract":"<p><p>AbstractA vertical separation in light and nutrient availability is observed in many terrestrial and aquatic ecosystems. In lakes and oceans, the opposing vertical gradients of light and nutrients typically observed are believed to promote phagomixotrophy, a generalist strategy that combines resource acquisition through photoautotrophic and phagoheterotrophic pathways. While phagomixotrophy is widespread, it is not well understood how this strategy performs against pure specialist strategies in a resource competition context. We simulate the dynamics of three competitors (pure photoautotroph, phagomixotroph, pure phagoheterotroph) and bacterial prey over the vertical dimension of a water column to investigate what conditions of resource availability favor mixotrophy and how the presence of the phagomixotroph alters community dynamics. Since mixotrophs can be more or less photoautotrophic, we incorporated this variability into our model. Under weak vertical mixing, mixotrophs persist under most light and nutrient conditions and negatively affect specialists. Mixotrophs can even be dominant competitors when they display an optimal degree of phototrophy, which is positively related to water transparency and negatively related to nutrient supply. The model indicates that the spatial organization of nanophytoplankton communities in water columns could arise through vertical niche partitioning of multiple resource acquisition strategies and that phagomixotrophy can promote overall community production.</p>","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"205 4","pages":"435-450"},"PeriodicalIF":2.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143781338","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
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