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HiDaFernPT: Historical data of spore availability for 121 fern and lycopod taxa in Portugal (1926–2013)
IF 4.4 2区 环境科学与生态学
Ecology Pub Date : 2025-02-11 DOI: 10.1002/ecy.70026
Sérgio Timóteo, Ruben Heleno, Filipe Covelo, Joaquim Santos, Pedro Lopes, António C. Gouveia, Arménio Matos, Agostinho Salgado, M. Teresa Girão da Cruz, João Farminhão, Marta Horta, Guilherme Barreto, Ana V. Marques, Leonardo Craveiro, Patrícia Pinto, Matilde Santos, Bárbara Nunes, Margarida Barreiro, André Dias, Gabriel Rodrigues, Leonor Esteves, Marina Wanderley, Inês Santos, José Pedro Artiaga, João Veríssimo, Inês Vilhena, Lucas Moniz, Arthur Leão, Marta Couras, Sara Beatriz Mendes, Mauro Nereu, Ana Margarida Dias da Silva, Fátima Sales, M. Teresa Gonçalves, António Coutinho, Helena Freitas, Joaquim S. Silva, Jaime Ramos, Elizabete Marchante, José M. Costa
{"title":"HiDaFernPT: Historical data of spore availability for 121 fern and lycopod taxa in Portugal (1926–2013)","authors":"Sérgio Timóteo,&nbsp;Ruben Heleno,&nbsp;Filipe Covelo,&nbsp;Joaquim Santos,&nbsp;Pedro Lopes,&nbsp;António C. Gouveia,&nbsp;Arménio Matos,&nbsp;Agostinho Salgado,&nbsp;M. Teresa Girão da Cruz,&nbsp;João Farminhão,&nbsp;Marta Horta,&nbsp;Guilherme Barreto,&nbsp;Ana V. Marques,&nbsp;Leonardo Craveiro,&nbsp;Patrícia Pinto,&nbsp;Matilde Santos,&nbsp;Bárbara Nunes,&nbsp;Margarida Barreiro,&nbsp;André Dias,&nbsp;Gabriel Rodrigues,&nbsp;Leonor Esteves,&nbsp;Marina Wanderley,&nbsp;Inês Santos,&nbsp;José Pedro Artiaga,&nbsp;João Veríssimo,&nbsp;Inês Vilhena,&nbsp;Lucas Moniz,&nbsp;Arthur Leão,&nbsp;Marta Couras,&nbsp;Sara Beatriz Mendes,&nbsp;Mauro Nereu,&nbsp;Ana Margarida Dias da Silva,&nbsp;Fátima Sales,&nbsp;M. Teresa Gonçalves,&nbsp;António Coutinho,&nbsp;Helena Freitas,&nbsp;Joaquim S. Silva,&nbsp;Jaime Ramos,&nbsp;Elizabete Marchante,&nbsp;José M. Costa","doi":"10.1002/ecy.70026","DOIUrl":"https://doi.org/10.1002/ecy.70026","url":null,"abstract":"<p>Species phenology is being altered by ongoing climate changes with yet underappreciated consequences for ecological processes and ecosystem stability. Contrary to what happens with some key life events of flowering plants, comparatively little information exists about fern and lycophyte phenology and how it is affected by the current climatic changes. In part, this stems from the lack of long-term datasets. Here we provide information on the collection day and site of the spores of 121 native and introduced fern (Polypodiopsida) and lycopod (Lycopodiopsida) taxa for the <i>Index Seminum</i> of the Botanic Garden of the University of Coimbra. Spores were collected from spontaneous and cultivated individuals across Portugal between 1926 and 2013. The database includes 3383 curated records with information on the species, or infraspecific taxa (including authority), and are fully georeferenced and provided with a confidence interval for the collection site. Taxonomy was first curated manually by in-house botanists and then harmonized according to the Global Biodiversity Information Facility (GBIF) backbone taxonomy. The data are released under a Creative Commons Attribution Non Commercial (CC-BY-NC 4.0) license.</p>","PeriodicalId":11484,"journal":{"name":"Ecology","volume":"106 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ecy.70026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143389304","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
Climate-induced range expansion of cushion plants promotes functional homogenization of soil nematode communities
IF 4.4 2区 环境科学与生态学
Ecology Pub Date : 2025-02-11 DOI: 10.1002/ecy.70017
Anning Zhang, André L. C. Franco, Shuyan Chen, Hongxian Song, Ziyang Liu, Xiaoxuan Jiang, Sa Xiao, Lizhe An, Pedro Cardoso
{"title":"Climate-induced range expansion of cushion plants promotes functional homogenization of soil nematode communities","authors":"Anning Zhang,&nbsp;André L. C. Franco,&nbsp;Shuyan Chen,&nbsp;Hongxian Song,&nbsp;Ziyang Liu,&nbsp;Xiaoxuan Jiang,&nbsp;Sa Xiao,&nbsp;Lizhe An,&nbsp;Pedro Cardoso","doi":"10.1002/ecy.70017","DOIUrl":"https://doi.org/10.1002/ecy.70017","url":null,"abstract":"<p>Global climate change is causing plants and other organisms to naturally expand their ranges to higher latitudes or altitudes. This expansion is leading to a strong reshuffling of biotic interactions with consequent ecosystem functions in the new ranges. We report here that soil fauna communities respond strongly to the cushion plants in a large-scale latitudinal gradient in the Qinghai–Tibet Plateau. Local taxonomic, functional, and phylogenetic diversity of soil nematodes increased with the presence of cushion plants independently of the latitudinal gradient, but communities became more functionally similar in the presence of cushion plants and with increasing latitude. This functional homogenization was driven by deterministic processes through which the presence of cushion plants favored some functional traits (i.e., nematode trophic groups: herbivores and bacterivores). Our study reveals functional homogenizations of soil fauna communities in response to climate warming-induced plant range expansion. Given that soil nematodes represent the most abundant and functionally diverse animal communities in terrestrial ecosystems, these findings indicate important changes in the functional dimension of biodiversity and in the delivery of ecosystem functions under climate change.</p>","PeriodicalId":11484,"journal":{"name":"Ecology","volume":"106 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143389187","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
Interactive effects of leaf pathogens and plant mycorrhizal type on plant diversity–productivity relationships 叶片病原体和植物菌根类型对植物多样性-生产力关系的交互影响
IF 4.4 2区 环境科学与生态学
Ecology Pub Date : 2025-02-11 DOI: 10.1002/ecy.70029
Nianxun Xi, Yansong Zhao, Marina Semchenko
{"title":"Interactive effects of leaf pathogens and plant mycorrhizal type on plant diversity–productivity relationships","authors":"Nianxun Xi,&nbsp;Yansong Zhao,&nbsp;Marina Semchenko","doi":"10.1002/ecy.70029","DOIUrl":"https://doi.org/10.1002/ecy.70029","url":null,"abstract":"<p>Diversity–productivity relationships can differ between forests dominated by different mycorrhizal types and be modulated by specialist and generalist pathogens. However, little is known about how these factors interact to modulate biodiversity effects. We addressed this knowledge gap with a 2-year experiment combining the manipulation of plant richness (one, two, four, eight species) and mycorrhizal tree type (arbuscular mycorrhizal [AM] tree-dominated; ecto-mycorrhizal [ECM] tree-dominated) with fungicide application for leaf pathogens (added or control). Biodiversity effects were quantified for community productivity and its two components (shoots and roots). We observed nonlinear diversity–productivity relationships, with the productivity of ECM tree-dominated communities increasing at low to intermediate diversity and declining at the highest species richness. Foliar fungicide application reduced positive complementarity effects and increased productivity in both ECM tree monocultures as well as eight-species mixtures. This finding suggests that the dilution effects of specialized pathogens may dominate at low diversity, while the spillover effects of generalist pathogens may become dominant at high diversity, resulting in unimodal diversity–productivity relationships. In AM tree-dominated communities, aboveground productivity strongly increased in response to leaf pathogen suppression in eight-species mixtures, and the release from leaf pathogens benefited most of the species that were most productive in fungicide-treated monocultures. This agrees with the prediction that spillover effects of generalist pathogens in diverse plant communities could differentially suppress highly productive species due to the trade-off between growth and defense. In addition, positive biodiversity effects on root production were significantly stronger in AM tree- than ECM tree-dominated communities. Our results demonstrate that relationships between plant diversity and productivity can be nonlinear due to the combined effects of specialized and generalized plant–fungal interactions, depend on plant mycorrhizal type, and differ between aboveground and belowground compartments.</p>","PeriodicalId":11484,"journal":{"name":"Ecology","volume":"106 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ecy.70029","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143389303","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
More extinction driven by the Red Queen in smaller habitats
IF 4.4 2区 环境科学与生态学
Ecology Pub Date : 2025-02-10 DOI: 10.1002/ecy.70018
Xiao Liu, Quan-Guo Zhang
{"title":"More extinction driven by the Red Queen in smaller habitats","authors":"Xiao Liu,&nbsp;Quan-Guo Zhang","doi":"10.1002/ecy.70018","DOIUrl":"https://doi.org/10.1002/ecy.70018","url":null,"abstract":"<p>Populations in antagonistic coevolutionary interactions may “run or die,” and their fates are determined by their evolutionary potential. The asymmetry of evolutionary speed between coevolving partners, for example, resulting from genetic constraints, can be mitigated in larger populations. We therefore hypothesize more frequent extinction driven by antagonistic coevolution with declining habitat size. In bacterium-virus systems, viruses (the consumers) typically suffer an evolutionary disadvantage due to constraints of genetic variation; and this pattern may apply to host–parasite interactions in general. Here, in our experiment with the bacterium <i>Pseudomonas fluorescens</i> SBW25 and its lytic phage virus SBW25Φ2, the likelihood of viral extinction was greater in smaller habitats. Among viral populations that did persist, those from small habitats showed lower infectivity and their coevolving bacterial populations had greater densities. Therefore, the impact of habitat size reduction on biodiversity could be exacerbated by coevolutionary processes. Our results also lead to a number of suggestions for biocontrol practices, particularly for evolutionary training of phages.</p>","PeriodicalId":11484,"journal":{"name":"Ecology","volume":"106 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143380427","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
Insect hosts are nutritional landscapes navigated by fungal pathogens
IF 4.4 2区 环境科学与生态学
Ecology Pub Date : 2025-02-07 DOI: 10.1002/ecy.70015
Henrik H. De Fine Licht, Zsuzsanna Csontos, Piet Jan Domela Nijegaard Nielsen, Enzo Buhl Langkilde, August K. Kjærgård Hansen, Jonathan Z. Shik
{"title":"Insect hosts are nutritional landscapes navigated by fungal pathogens","authors":"Henrik H. De Fine Licht,&nbsp;Zsuzsanna Csontos,&nbsp;Piet Jan Domela Nijegaard Nielsen,&nbsp;Enzo Buhl Langkilde,&nbsp;August K. Kjærgård Hansen,&nbsp;Jonathan Z. Shik","doi":"10.1002/ecy.70015","DOIUrl":"https://doi.org/10.1002/ecy.70015","url":null,"abstract":"<p>Nutrition can mediate host–pathogen interactions indirectly when specific deficiencies (e.g., iron or glutamine) constrain host immune performance. Nutrition can also directly govern these interactions as invading pathogens colonize finite landscapes of nutritionally variable host tissues that must be optimally foraged during pathogen development. We first used a conceptual framework of nutritional niches to show that insect-pathogenic <i>Metarhizium</i> fungi navigate host landscapes where different tissues vary widely in (protein [P] and carbohydrates [C]). We next tested whether host-specific <i>Metarhizium</i> species have narrower fundamental nutritional niches (FNNs) than host-generalists by measuring pathogen performance across an in vitro nutritional landscape simulating a within-host foraging environment. We then tested how developing pathogens navigate nutritional landscapes by developing a liquid-media approach to track pathogen intake of P and C over time. Host-specificity did not govern FNN dimensions, as the three tested <i>Metarhizium</i> species: (1) grew maximally across C treatments assuming P was present above a lower threshold, and (2) similarly initiated dispersal behaviors and sporulated when either C or P became depleted. However, specialist and generalist pathogens navigated nutritional landscapes differently. The host specialist (<i>M. acridum</i>) first prioritized C intake, but generalists (<i>M. anisopliae</i>, <i>M. robertsii</i>) prioritized P and C according to their availability. The numbers of known hosts may be insufficient to delimit pathogens as specialists or generalists as diverse hosts do not necessarily comprise diverse nutritional landscapes. Instead, the immune responses of hosts and nutritional niche breadth of pathogens are likely co-equal evolutionary drivers of host specificity.</p>","PeriodicalId":11484,"journal":{"name":"Ecology","volume":"106 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ecy.70015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362603","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
Combining observational and experimental data to estimate environmental and species drivers of fungal metacommunity dynamics
IF 4.4 2区 环境科学与生态学
Ecology Pub Date : 2025-02-07 DOI: 10.1002/ecy.70014
Hedvig Kristina Nenzén, Helen Moor, Robert B. O'Hara, Mari Jönsson, Jenni Nordén, Elisabet Ottosson, Tord Snäll
{"title":"Combining observational and experimental data to estimate environmental and species drivers of fungal metacommunity dynamics","authors":"Hedvig Kristina Nenzén,&nbsp;Helen Moor,&nbsp;Robert B. O'Hara,&nbsp;Mari Jönsson,&nbsp;Jenni Nordén,&nbsp;Elisabet Ottosson,&nbsp;Tord Snäll","doi":"10.1002/ecy.70014","DOIUrl":"https://doi.org/10.1002/ecy.70014","url":null,"abstract":"<p>Understanding the distribution and dynamics of species is central to ecology and important for managing biodiversity. The distributions of species in metacommunities are determined by many factors, including environmental conditions and interactions between species. Yet, it is difficult to quantify the effect of species interactions on metacommunity dynamics from observational data. We present an approach to estimate the importance of species interactions that combines data from two observational presence–absence inventories (providing colonization–extinction data) with data from species interaction experiments (providing informative prior distributions in the Bayesian framework). We further illustrate the approach on wood-decay fungi that interact within a downed log through competition for resources and space, and facilitate the succession of other species by decomposing the wood. Specifically, we estimated the relative importance of species interactions by examining how the presence of a species influenced the colonization and extinction probability of other species. Temporal data on fruit body occurrence of 12 species inventoried twice were jointly analyzed with experimental data from two laboratory experiments that aimed to estimate competitive interactions. Both environmental variables and species interactions affected colonization and extinction dynamics. Late-successional fungi had more colonization interactions with predecessor species than early-successional species. We identified several species interactions, and the presence of certain species changed the probability that later-successional species colonized by −81% to 512%. The presence of certain species increased the probability that other species went extinct from a log by 14%–61%. Including the informative priors from experimental data added two colonization interactions and one extinction interaction for which the observational field data was inconclusive. However, most species had no detectable interactions, either because they did not interact or because of low species occupancy, meaning data limitation. We show how temporal presence-absence data can be combined with experimental data to identify which species influence the colonization-extinction dynamics of others. Accounting for species interactions in metacommunity models, in addition to environmental drivers, is important because interactions can have cascading effects on other species.</p>","PeriodicalId":11484,"journal":{"name":"Ecology","volume":"106 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ecy.70014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362604","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
Rates and controls of nitrogen fixation in postfire lodgepole pine forests
IF 4.4 2区 环境科学与生态学
Ecology Pub Date : 2025-02-07 DOI: 10.1002/ecy.70016
Robert E. Heumann, Monica G. Turner, Cory C. Cleveland
{"title":"Rates and controls of nitrogen fixation in postfire lodgepole pine forests","authors":"Robert E. Heumann,&nbsp;Monica G. Turner,&nbsp;Cory C. Cleveland","doi":"10.1002/ecy.70016","DOIUrl":"https://doi.org/10.1002/ecy.70016","url":null,"abstract":"<p>Severe, stand-replacing wildfire substantially depletes nitrogen (N) stocks in subalpine conifer forests, potentially exacerbating N limitation of net primary productivity in many forested regions where fire frequency is increasing. In lodgepole pine (<i>Pinus contorta</i> var. <i>latifolia</i>) forests in the Greater Yellowstone Ecosystem (GYE), long-term data show surface soil and biomass N stocks are replenished during the first few decades following wildfire, but the source(s) of that N are unclear. We measured acetylene reduction rates in multiple cryptic niches (i.e., lichen, moss, pine litter, dead wood, and mineral soil) in 34-year-old lodgepole pine stands in the GYE to explore the rates, temporal patterns, and climate controls on cryptic N fixation. Acetylene reduction rates were highest in late May (0.376 nmol C<sub>2</sub>H<sub>4</sub> g<sup>−1</sup> h<sup>−1</sup>) when moisture availability was high compared with early August and mid-October when moisture was relatively low (0.112 and 0.002 nmol C<sub>2</sub>H<sub>4</sub> g<sup>−1</sup> h<sup>−1</sup>, respectively). We observed modest rates of nitrogenase activity in a few niches following a mid-summer rain event, suggesting that moisture is an important factor regulating field-based N fixation rates. In a laboratory experiment, moss responded more strongly to temperature and moisture variation than all other niches. Acetylene reduction rates in dead wood increased with temperature but not moisture content. No other niches showed clear responses to either moisture or temperature manipulation. Together, the field and laboratory results suggest that frequent asynchrony between favorable temperature and moisture conditions may limit N fixation rates in the field. Overall, total annual cryptic N fixation inputs (mean: 0.26; range: 0.07–2.9 kg N ha<sup>−1</sup> year<sup>−1</sup>) represented &lt;10% of the postfire biomass and surface soil N accumulation in the same stands (39.4 kg N ha<sup>−1</sup> year<sup>−1</sup>), pointing to a still unknown source of ecosystem N following fire.</p>","PeriodicalId":11484,"journal":{"name":"Ecology","volume":"106 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362256","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
Intraspecific scaling of home range size and its bioenergetic association
IF 4.4 2区 环境科学与生态学
Ecology Pub Date : 2025-02-06 DOI: 10.1002/ecy.70003
Evan E. Byrnes, Jenna L. Hounslow, Vital Heim, Clemency E. White, Matthew J. Smukall, Stephen J. Beatty, Adrian C. Gleiss
{"title":"Intraspecific scaling of home range size and its bioenergetic association","authors":"Evan E. Byrnes,&nbsp;Jenna L. Hounslow,&nbsp;Vital Heim,&nbsp;Clemency E. White,&nbsp;Matthew J. Smukall,&nbsp;Stephen J. Beatty,&nbsp;Adrian C. Gleiss","doi":"10.1002/ecy.70003","DOIUrl":"10.1002/ecy.70003","url":null,"abstract":"<p>Home range size and metabolic rate of animals are theorized to scale in relation to body mass with similar exponents. This expectation has only been indirectly tested using lab-derived estimates of basal metabolic rate as proxies for field energy requirements. Therefore, it is unclear if existing theory aligns with observed patterns of home range scaling since field metabolic rates may scale differently than basal metabolic rates. We conducted the first direct field test of the relationship between home range and metabolic rate allometry. Using acoustic telemetry, we simultaneously measured the home range sizes and field metabolic rates of lemon sharks (<i>Negaprion brevirostris</i>) spanning one order of magnitude in body mass and compared the allometric scaling exponents of these traits. Similarity between allometric scaling exponents confirmed an expected strong association between metabolic rate and home range size. However, a nonsignificant but negative association between standard metabolic rate (SMR) and home range size suggests a complex relationship between metabolism and home range, contrasting previous assumptions of a positive relationship. Nevertheless, an overall positive association between home range size and total metabolic rate persisted, driven by a strong association between active energy expenditure and home range size. These findings underscore the intricate relationship between energetics and home range size, emphasizing the need for additional direct field investigations and the potential for modern tagging technologies to gather relevant data.</p>","PeriodicalId":11484,"journal":{"name":"Ecology","volume":"106 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ecy.70003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143192108","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
Soil legacies of genotypic diversity enhance population resistance to water stress
IF 4.4 2区 环境科学与生态学
Ecology Pub Date : 2025-02-06 DOI: 10.1002/ecy.4529
Zekang Liu, Cai Cheng, Qun Zhang, Xing Tian, Lin Jiang, Kerri M. Crawford, Xiang Liu, Jianquan Liu, Qiang He, Bo Li, Jihua Wu
{"title":"Soil legacies of genotypic diversity enhance population resistance to water stress","authors":"Zekang Liu,&nbsp;Cai Cheng,&nbsp;Qun Zhang,&nbsp;Xing Tian,&nbsp;Lin Jiang,&nbsp;Kerri M. Crawford,&nbsp;Xiang Liu,&nbsp;Jianquan Liu,&nbsp;Qiang He,&nbsp;Bo Li,&nbsp;Jihua Wu","doi":"10.1002/ecy.4529","DOIUrl":"10.1002/ecy.4529","url":null,"abstract":"<p>While the positive relationship between plant diversity and ecosystem functioning is frequently observed and often attributed to direct plant–plant interactions, it remains unclear whether and how the effects of plant diversity endure through soil legacy effects, particularly at the level of genotypic diversity. We manipulated the genotypic diversity of <i>Scirpus mariqueter</i> and tested its soil legacy effects on a conspecific phytometer under low- and high-water availability conditions. We found that genotypic diversity enhanced phytometer productivity through soil legacies, with stronger effects under low-water availability conditions, improving its resistance to water stress. Moreover, this effect was attributed to the association between asexual and sexual reproductive strategies by increasing ramet number to ensure plant survival under low-water availability and promoting sexual reproduction to escape stress. The observed diversity effects were primarily associated with increased levels of microbial biomass in soils trained by populations with diverse genotypes. Our findings highlight the importance of plant genotypic diversity in modulating ecosystem functioning through soil legacies and call for management measures that promote genetic diversity to make ecosystems sustainable in the face of climate change.</p>","PeriodicalId":11484,"journal":{"name":"Ecology","volume":"106 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143192109","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
Mean plant toxicity modulates the effects of plant defense variability
IF 4.4 2区 环境科学与生态学
Ecology Pub Date : 2025-02-04 DOI: 10.1002/ecy.70012
Vincent S. Pan, Kadeem J. Gilbert, William C. Wetzel
{"title":"Mean plant toxicity modulates the effects of plant defense variability","authors":"Vincent S. Pan,&nbsp;Kadeem J. Gilbert,&nbsp;William C. Wetzel","doi":"10.1002/ecy.70012","DOIUrl":"https://doi.org/10.1002/ecy.70012","url":null,"abstract":"<p>Plant trait variation is thought to suppress herbivore performance, but experiments typically manipulate only a single mean level of the trait. We manipulated the mean and variation of the concentration of a plant toxin in a model plant–herbivore system across three field and greenhouse experiments. Plants with leaves painted with a higher mean toxin concentration exhibited increased fitness and resistance to herbivores; however, at high mean concentrations, variation reduced the defensive effect, while at lower mean concentrations, variation enhanced it. This reversal aligns with models that include herbivore food selectivity, but our simulations revealed that the benefits of food selectivity for herbivores were minimal. Instead, nonlinear averaging and physiological tracking effects likely drove patterns in plant fitness and resistance to herbivores. We suggest that high defense variation in plants may be a widespread defensive phenotype, but for well-defended plants, variation may inadvertently promote herbivore niche expansion.</p>","PeriodicalId":11484,"journal":{"name":"Ecology","volume":"106 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ecy.70012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112173","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
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