DOI: 10.1111/gcb.14320
Scopus记录号: 2-s2.0-85051467583
论文题名: Community disassembly under global change: Evidence in favor of the stress-dominance hypothesis
作者: Kuczynski L. ; Grenouillet G.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 9 起始页码: 4417
结束页码: 4427
语种: 英语
英文关键词: assembly rules
; biological invasion
; climate change
; community reassembly
; functional diversity
; long-term change
; phylogenetic diversity
; stream fish community
英文摘要: Ecological theory suggests that communities are not random combinations of species but rather the results of community assembly processes filtering and sorting species that are able to coexist together. To date, such processes (i.e., assembly rules) have been inferred from observed spatial patterns of biodiversity combined with null model approaches, but relatively few attempts have been made to assess how these processes may be changing through time. Specifically, in the context of the ongoing biodiversity crisis and global change, understanding how processes shaping communities may be changing and identifying the potential drivers underlying these changes become increasingly critical. Here, we used time series of 460 French freshwater fish communities and assessed both functional and phylogenetic diversity patterns to determine the relative importance of two key assembly rules (i.e., habitat filtering and limiting similarity) in shaping these communities over the last two decades. We aimed to (a) describe the temporal changes in both functional and phylogenetic diversity patterns, (b) determine to what extent temporal changes in processes inferred through the use of standardized diversity indices were congruent, and (c) test the relationships between the dynamics of assembly rules and both climatic and biotic drivers. Our results revealed that habitat filtering, although already largely predominant over limiting similarity, became more widespread over time. We also highlighted that phylogenetic and trait-based approaches offered complementary information about temporal changes in assembly rules. Finally, we found that increased environmental harshness over the study period (especially higher seasonality of temperature) led to an increase in habitat filtering and that biological invasions increased functional redundancy within communities. Overall, these findings underlie the need to develop temporal perspectives in community assembly studies, as understanding ongoing temporal changes could provide a better vision about the way communities could respond to future global changes. © 2018 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110250
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: UMR Laboratoire Evolution et Diversité Biologique, IRD 253, CNRS 5174, UPS, ENFA, Toulouse, France; Institut Universitaire de France, Paris, France
Recommended Citation:
Kuczynski L.,Grenouillet G.. Community disassembly under global change: Evidence in favor of the stress-dominance hypothesis[J]. Global Change Biology,2018-01-01,24(9)