DOI: 10.1073/pnas.1918363117
论文题名: Biotic and anthropogenic forces rival climatic/abiotic factors in determining global plant population growth and fitness
作者: Morris W.F. ; Ehrlén J. ; Dahlgren J.P. ; Loomis A.K. ; Louthan A.M.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期: 2 起始页码: 1107
结束页码: 1112
语种: 英语
英文关键词: Anthropogenic impacts
; Climate change
; Environmental driver
; Population growth rate
; Species interactions
Scopus关键词: article
; biodiversity
; biome
; climate change
; environmental change
; growth rate
; human
; human impact (environment)
; natural population
; organismal interaction
; population growth
英文摘要: Multiple, simultaneous environmental changes, in climatic/abiotic factors, interacting species, and direct human influences, are impacting natural populations and thus biodiversity, ecosystem services, and evolutionary trajectories. Determining whether the magnitudes of the population impacts of abiotic, biotic, and anthropogenic drivers differ, accounting for their direct effects and effects mediated through other drivers, would allow us to better predict population fates and design mitigation strategies. We compiled 644 paired values of the population growth rate (λ) from high and low levels of an identified driver from demographic studies of terrestrial plants. Among abiotic drivers, natural disturbance (not climate), and among biotic drivers, interactions with neighboring plants had the strongest effects on λ. However, when drivers were combined into the 3 main types, their average effects on λ did not differ. For the subset of studies that measured both the average and variability of the driver, λ was marginally more sensitive to 1 SD of change in abiotic drivers relative to biotic drivers, but sensitivity to biotic drivers was still substantial. Similar impact magnitudes for abiotic/biotic/anthropogenic drivers hold for plants of different growth forms, for different latitudinal zones, and for biomes characterized by harsher or milder abiotic conditions, suggesting that all 3 drivers have equivalent impacts across a variety of contexts. Thus, the best available information about the integrated effects of drivers on all demographic rates provides no justification for ignoring drivers of any of these 3 types when projecting ecological and evolutionary responses of populations and of biodiversity to environmental changes. © 2020 National Academy of Sciences. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164365
Appears in Collections: 气候变化与战略
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作者单位: Morris, W.F., Department of Biology, Duke University, Durham, NC 27708, United States; Ehrlén, J., Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, SE-106 91, Sweden; Dahlgren, J.P., Department of Biology, University of Southern Denmark, Odense M, DK-5230, Denmark, Interdisciplinary Centre on Population Dynamics, University of Southern Denmark, Odense M, DK-5230, Denmark; Loomis, A.K., Department of Biology, Duke University, Durham, NC 27708, United States; Louthan, A.M., Department of Biology, Duke University, Durham, NC 27708, United States
Recommended Citation:
Morris W.F.,Ehrlén J.,Dahlgren J.P.,et al. Biotic and anthropogenic forces rival climatic/abiotic factors in determining global plant population growth and fitness[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(2)