Population Ecology最新文献

Regional‐scale effects of deer‐induced forest degradation on river ecosystem dynamics 鹿引起的森林退化对河流生态系统动态的区域效应

IF 1.7 4区环境科学与生态学

Population Ecology Pub Date : 2024-01-08 DOI: 10.1002/1438-390x.12174

Hikaru Nakagawa, Daisuke Fujiki, Hiroo Numata, Luhan Wu, Terutaka Mori, T. Minamoto

{"title":"Regional‐scale effects of deer‐induced forest degradation on river ecosystem dynamics","authors":"Hikaru Nakagawa, Daisuke Fujiki, Hiroo Numata, Luhan Wu, Terutaka Mori, T. Minamoto","doi":"10.1002/1438-390x.12174","DOIUrl":"https://doi.org/10.1002/1438-390x.12174","url":null,"abstract":"Almost all ecosystems are open systems, meaning that significant changes in one ecosystem can lead to unexpected changes in others. Deer overabundance has become a problem worldwide, leading to forest degradation that has impacts on not only terrestrial, but also aquatic ecosystems. This study aims to investigate the regional‐scale importance of large herbivores in inter‐ecosystem interactions by examining the effects of deer‐induced forest degradation on fish populations. We selected similar‐scale catchments from river systems in Hyogo, Japan, that differed in the time since deer‐induced forest degradation. Conventional surveys for fish densities and microhabitat environments were conducted in 23 catchments, and surveys using quantitative eDNA metabarcoding were conducted in 95 catchments. We examined the relationships between fish population densities, microhabitats, and time since forest degradation, considering confounding effects. Data from 8 and 17 fish taxa detected by snorkeling and eDNA methods, respectively, were available for statistical analysis. Snorkeling‐counts (Individuals/1 m transect) and eDNA concentrations (Copies/L) in river water were strongly correlated. Fine sediments on riverbeds were increased in the 3–15 years following forest degradation and decreased after 16 years. Population densities of sand‐preferring fishes, as inferred from both eDNA and snorkeling, reasonably followed this pattern. These patterns may be caused by the depletion of fine sediments on mountain slopes. The results of this study suggest that deer‐induced worldwide alternation may also occur in aquatic ecosystems.","PeriodicalId":54597,"journal":{"name":"Population Ecology","volume":"16 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139446809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Population Ecology 2024 Editorial 人口生态学 2024》社论

IF 1.7 4区环境科学与生态学

Population Ecology Pub Date : 2023-12-17 DOI: 10.1002/1438-390x.12173

Atsushi Yamauchi

引用次数: 0

Correction to “A primer of community ecology using the R language” 对 "使用 R 语言的群落生态学入门 "的更正

IF 1.7 4区环境科学与生态学

Population Ecology Pub Date : 2023-12-15 DOI: 10.1002/1438-390x.12175

引用次数: 0

Restoring eastern hellbender (Cryptobranchus a. alleganiensis) populations through translocation of headstarted individuals 通过迁移起始个体恢复东部地狱蛙（Cryptobranchus a. alleganiensis）种群

IF 1.7 4区环境科学与生态学

Population Ecology Pub Date : 2023-11-20 DOI: 10.1002/1438-390x.12171

Matthew D. Kaunert, Ryan K. Brown, Stephen Spear, Peter B. Johantgen, V. Popescu

{"title":"Restoring eastern hellbender (Cryptobranchus a. alleganiensis) populations through translocation of headstarted individuals","authors":"Matthew D. Kaunert, Ryan K. Brown, Stephen Spear, Peter B. Johantgen, V. Popescu","doi":"10.1002/1438-390x.12171","DOIUrl":"https://doi.org/10.1002/1438-390x.12171","url":null,"abstract":"Freshwater biodiversity is declining at a fast pace despite significant efforts directed toward the management and conservation of aquatic systems. Eastern hellbenders are one of North America's most iconic stream amphibian species, a sentinel of stream health, and are experiencing rapid population declines throughout most of their range. Common conservation strategies include headstarting; however, the success of this strategy for rebuilding hellbender populations and the most optimal release scenarios have largely been unassessed. We use a cohort of 205 animals released in several Ohio watersheds to evaluate the success of headstarting and reintroduction efforts over 3 years. Using PIT‐tag surveys over 25 occasions between July 2018 and November 2021 and capture–recapture models, we found that 3‐year apparent survival post‐release was 0.162 ± 0.061, with lower survival in year 1 (0.383 ± 0.058) and greater in years 2 (0.696 ± 0.086) and 3 (0.609 ± 0.154). Using demographic simulations, we found that releasing cohorts of N = 100 individuals at fewer suitable sites several times (e.g., 3 releases, 2 or 3 years apart) would be a better strategy compared to single release events across multiple sites. Additional simulations showed that eastern hellbender headstarting programs using wild eggs can be highly beneficial in producing more animals reaching adulthood (up to 7 times, if survival in captivity is assumed to be 100%) compared to development in the wild. This study emphasizes the need to monitor the success of reintroduction programs and provides evidence that headstarting can be a viable strategy for rebuilding eastern hellbender populations.","PeriodicalId":54597,"journal":{"name":"Population Ecology","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139257167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Effects of selective logging on genetic diversity and population structure of a keystone mistletoe 选择性采伐对楔石槲寄生遗传多样性和种群结构的影响

4区环境科学与生态学

Population Ecology Pub Date : 2023-11-07 DOI: 10.1002/1438-390x.12170

Francisco E. Fontúrbel, Héctor González‐Ancin, Noemí Rojas‐Hernández, Caren Vega‐Retter

{"title":"Effects of selective logging on genetic diversity and population structure of a keystone mistletoe","authors":"Francisco E. Fontúrbel, Héctor González‐Ancin, Noemí Rojas‐Hernández, Caren Vega‐Retter","doi":"10.1002/1438-390x.12170","DOIUrl":"https://doi.org/10.1002/1438-390x.12170","url":null,"abstract":"Abstract The effects of habitat degradation remain not fully understood. A recent study reported low effects of habitat degradation on plant genetic diversity but indicates that reduction in habitat quality could impact it as well as gene flow indirectly via ecological interactions. Selective logging is a way of habitat degradation, but studies examining its effects on plant genetic diversity on non‐logged forest plant species are relatively scarce. Using 3470 single‐nucleotide polymorphisms, we assess the effects of different selective logging intensities on the genetic diversity of 66 individuals of a keystone mistletoe ( Tristerix corymbosus ). We also examined the possible relationship with its seed disperser ( Dromiciops gliroides ) abundance in three sites of the temperate rainforests of southern Chile, with different levels of selective logging intensity. Our results show that selective logging increases allelic richness and inbreeding in this mistletoe; inbreeding increased with selective logging intensity, and heterozygosity decreased with D. gliroides abundance. While wood extraction seems to positively affect T. corymbosus genetic diversity, its long‐term consequences—such as increased inbreeding—are yet to be assessed in future studies.","PeriodicalId":54597,"journal":{"name":"Population Ecology","volume":"80 S1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135539968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Properties and interpretation of the Skellam model—A discrete‐time contest competition population model Skellam模型的性质和解释——离散时间竞争种群模型

4区环境科学与生态学

Population Ecology Pub Date : 2023-10-06 DOI: 10.1002/1438-390x.12169

Jurģis Šuba, Yukichika Kawata, Andreas Lindén

引用次数: 0

Announcement of the 4th Population Ecology Awards 第四届人口生态奖公布

4区环境科学与生态学

Population Ecology Pub Date : 2023-10-01 DOI: 10.1002/1438-390x.12166

引用次数: 0

Acknowledgements to reviewers and editors 感谢审稿人和编辑

4区环境科学与生态学

Population Ecology Pub Date : 2023-10-01 DOI: 10.1002/1438-390x.12168

引用次数: 0

Estimating current effective sizes of large populations from a single sample of genomic marker data: A comparison of estimators by simulations 从单个基因组标记数据样本估计当前大种群的有效规模:模拟估算器的比较

4区环境科学与生态学

Population Ecology Pub Date : 2023-09-19 DOI: 10.1002/1438-390x.12167

Jinliang Wang

{"title":"Estimating current effective sizes of large populations from a single sample of genomic marker data: A comparison of estimators by simulations","authors":"Jinliang Wang","doi":"10.1002/1438-390x.12167","DOIUrl":"https://doi.org/10.1002/1438-390x.12167","url":null,"abstract":"Abstract Genome‐wide single nucleotide polymorphisms (SNPs) data are increasingly used in estimating the current effective population sizes ( N e ) for informing the conservation of endangered species and guiding the management of exploited species. Previous assessments of sibship frequency (SF) and linkage disequilibrium (LD) estimators of N e focused on small populations where genetic drift is strong and thus N e is easy to estimate. Genomic single nucleotide polymorphism (SNP) data provide ample information and hold the potential for application of these estimators to large populations where genetic drift is rather weak and thus N e is difficult to estimate. In this study, I simulated very large populations and sampled a widely variable number of individuals (genotyped at 10,000 SNPs) for estimating N e by both SF and LD methods. I also considered the more realistic situation where a population experiences a bottleneck, and where marker data suffer from genotyping errors. The simulations show that both SF and LD methods can yield accurate N e estimates of very large populations when sampled individuals are sufficiently numerous. When n is much smaller than N e , however, N e estimates are in a bimodal distribution with a substantial proportion of the estimates being infinitely large. For a population with a bottleneck, LD estimator overestimates and underestimates the N e of the parental population from samples taken at and after the bottleneck, respectively. LD estimator also overestimates N e substantially when applied to data suffering from allelic dropouts and false alleles. In contrast, SF estimator is unbiased and accurate when populations are changing in size or markers suffer from genotyping errors.","PeriodicalId":54597,"journal":{"name":"Population Ecology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135106630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Frequency‐dependent community dynamics driven by sexual interactions 由性互动驱动的频率依赖的群落动态

4区环境科学与生态学

Population Ecology Pub Date : 2023-09-11 DOI: 10.1002/1438-390x.12165

Masato Yamamichi, Kaoru Tsuji, Shoko Sakai, Erik I. Svensson

{"title":"Frequency‐dependent community dynamics driven by sexual interactions","authors":"Masato Yamamichi, Kaoru Tsuji, Shoko Sakai, Erik I. Svensson","doi":"10.1002/1438-390x.12165","DOIUrl":"https://doi.org/10.1002/1438-390x.12165","url":null,"abstract":"Abstract Research in community ecology has tended to focus on trophic interactions (e.g., predation, resource competition) as driving forces of community dynamics, and sexual interactions have often been overlooked. Here we discuss how sexual interactions can affect community dynamics, especially focusing on frequency‐dependent dynamics of horizontal communities (i.e., communities of competing species in a single ecological guild). By combining mechanistic and phenomenological models of competition, we place sexual reproduction into the framework of modern coexistence theory. First, we review how population dynamics of two species competing for two resources can be represented by the Lotka–Volterra competition model as well as frequency dynamics, and how niche differentiation and overlap produce negative and positive frequency‐dependence (i.e., stable coexistence and priority effect), respectively. Then, we explore two situations where sexual interactions change the frequency‐dependence in community dynamics: (1) reproductive interference, that is, negative interspecific interactions due to incomplete species recognition in mating trials, can promote positive frequency‐dependence and (2) density‐dependent intraspecific adaptation load, that is, reduced population growth rates due to adaptation to intraspecific sexual (or social) interactions, produces negative frequency‐dependence. We show how reproductive interference and density‐dependent intraspecific adaptation load can decrease and increase niche differences in the framework of modern coexistence theory, respectively. Finally, we discuss future empirical and theoretical approaches for studying how sexual interactions and related phenomena (e.g., reproductive interference, intraspecific adaptation load, and sexual dimorphism) driven by sexual selection and conflict can affect community dynamics.","PeriodicalId":54597,"journal":{"name":"Population Ecology","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135982482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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