globalchange  > 气候减缓与适应
DOI: 10.1111/ele.12918
Scopus记录号: 2-s2.0-85041709217
论文题名:
Extreme streams: species persistence and genomic change in montane insect populations across a flooding gradient
作者: Poff N.L.; Larson E.I.; Salerno P.E.; Morton S.G.; Kondratieff B.C.; Flecker A.S.; Zamudio K.R.; Funk W.C.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2018
卷: 21, 期:4
起始页码: 525
结束页码: 535
语种: 英语
英文关键词: Disturbance gradient ; extreme event ; genomic change ; landscape vulnerability ; population persistence ; resilience traits ; resistance traits ; stream insects
Scopus关键词: Hexapoda
英文摘要: The ecological and evolutionary consequences of extreme events are poorly understood. Here, we tested predictions about species persistence and population genomic change in aquatic insects in 14 Colorado mountain streams across a hydrological disturbance gradient caused by a one in 500-year rainfall event. Taxa persistence ranged from 39 to 77% across sites and declined with increasing disturbance in relation to species' resistance and resilience traits. For taxa with mobile larvae and terrestrial adult stages present at the time of the flood, average persistence was 84% compared to 25% for immobile taxa that lacked terrestrial adults. For two of six species analysed, genomic diversity (allelic richness) declined after the event. For one species it greatly expanded, suggesting resilience via re-colonisation from upstream populations. Thus, while resistance and resilience traits can explain species persistence to extreme disturbance, population genomic change varies among species, challenging generalisations about evolutionary responses to extreme events at landscape scales. © 2018 John Wiley & Sons Ltd/CNRS
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107473
Appears in Collections:气候减缓与适应

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作者单位: Department of Biology & Graduate Degree Program in Ecology, Colorado State University, Fort Collins, CO, United States; Institute for Applied Ecology, University of Canberra, ACTACT, Australia; Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, United States; Department of Biology, Colorado State University, Fort Collins, CO, United States; Department of Bioagricultural Sciences and Pest Management & Graduate Degree Program in Ecology, Colorado State University, Fort Collins, CO, United States

Recommended Citation:
Poff N.L.,Larson E.I.,Salerno P.E.,et al. Extreme streams: species persistence and genomic change in montane insect populations across a flooding gradient[J]. Ecology Letters,2018-01-01,21(4)
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