干旱区生态环境知识资源中心(Arid): Substantial long-term loss of alpha and gamma diversity of lake invertebrates in a landscape exposed to a drying climate

Arid

DOI	10.1111/gcb.15890
	Substantial long-term loss of alpha and gamma diversity of lake invertebrates in a landscape exposed to a drying climate
	Atkinson, S. T.; Cale, D.; Pinder, A.; Chambers, J. M.; Halse, S. A.; Robson, Belinda J.
通讯作者	Robson, BJ (corresponding author), Murdoch Univ, Harry Butler Inst, Murdoch, WA, Australia. ; Robson, BJ (corresponding author), Murdoch Univ, Environm & Conservat Sci, Murdoch, WA, Australia.
来源期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
EISSN	1365-2486
出版年	2021
英文摘要	Many regions across the globe are shifting to more arid climates. For shallow lakes, decreasing rainfall volume and timing, changing regional wind patterns and increased evaporation rates alter water regimes so that dry periods occur more frequently and for longer. Drier conditions may affect fauna directly and indirectly through altered physicochemical conditions in lakes. Although many studies have predicted negative effects of such changes on aquatic biodiversity, empirical studies demonstrating these effects are rare. Global warming has caused severe climatic drying in southwestern Australia since the 1970s, so we aimed to determine whether lakes in this region showed impacts on lake hydroperiod, water quality, and alpha, beta and gamma diversity of lake invertebrates from 1998 to 2011. Seventeen lakes across a range of salinities were sampled biennially in spring in the Wheatbelt and Great Southern regions of Western Australia. Multivariate analyses were used to identify changes in alpha, beta and gamma diversity and examine patterns in physicochemical data. Salinity and average rainfall partially explained patterns in invertebrate richness and assemblage composition. Climatic drying was associated with significant declines in lake depth, increased frequency of dry periods, and reduced alpha and gamma diversity (gamma declined from similar to 300 to similar to 100 taxa from 1998 to 2011 in the 17 wetlands). In contrast, beta diversity remained consistently high, because each lake retained a distinct fauna. Mean alpha diversity per-lake declined both in lakes that dried and lakes that did not dry out, but lakes which retained a greater proportion of their maximum depth retained more alpha diversity. Accumulated losses in alpha diversity caused the decline in gamma diversity likely through shrinking habitat area, fewer stepping stones for dispersal and loss of specific habitat types. Biodiversity loss is thus likely from lakes in drying regions globally. Management actions will need to sustain water depth in lakes to prevent biodiversity loss.
英文关键词	aquatic invertebrates Australia beta diversity biodiversity climate change long-term ecological research salinity salt lakes wetlands
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000705536500001
WOS关键词	BETA-DIVERSITY ; AQUATIC INVERTEBRATES ; MACROINVERTEBRATE COMMUNITIES ; WESTERN-AUSTRALIA ; WETLANDS ; BIODIVERSITY ; HYDROPERIOD ; DISPERSAL ; DROUGHT ; WATER
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363461
作者单位	[Atkinson, S. T.; Chambers, J. M.; Robson, Belinda J.] Murdoch Univ, Harry Butler Inst, Murdoch, WA, Australia; [Atkinson, S. T.; Chambers, J. M.; Robson, Belinda J.] Murdoch Univ, Environm & Conservat Sci, Murdoch, WA, Australia; [Cale, D.; Pinder, A.; Halse, S. A.] Dept Biodivers Conservat & Attract, Bentley, WA, Australia; [Halse, S. A.] Bennelongia Environm Consultants, Jolimont, WA, Australia
推荐引用方式 GB/T 7714	Atkinson, S. T.,Cale, D.,Pinder, A.,et al. Substantial long-term loss of alpha and gamma diversity of lake invertebrates in a landscape exposed to a drying climate[J],2021.
APA	Atkinson, S. T.,Cale, D.,Pinder, A.,Chambers, J. M.,Halse, S. A.,&Robson, Belinda J..(2021).Substantial long-term loss of alpha and gamma diversity of lake invertebrates in a landscape exposed to a drying climate.GLOBAL CHANGE BIOLOGY.
MLA	Atkinson, S. T.,et al."Substantial long-term loss of alpha and gamma diversity of lake invertebrates in a landscape exposed to a drying climate".GLOBAL CHANGE BIOLOGY (2021).