干旱区生态环境知识资源中心(Arid): Ecological drivers of alpha and beta diversity of freshwater invertebrates in arid and semiarid Patagonia (Argentina)

Arid

DOI	10.1016/j.scitotenv.2019.04.392
	Ecological drivers of alpha and beta diversity of freshwater invertebrates in arid and semiarid Patagonia (Argentina)
	Epele, Luis B.1; Brand, Cecilia ; Laura Miserendino, Maria
通讯作者	Epele, Luis B.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2019
卷号	678 页码:62-73
英文摘要	Freshwater biodiversity is showing a global decline in relation to environmental change and there is an urgent need to quantify different facets of biodiversity to assess the conservation value of freshwater ecosystems. Identifying the ecological drivers of arid and semiarid Patagonian waterbodies is a critical requirement for planning action to conserve these still poorly understood habitats. We tested the responses of alpha and beta diversity of invertebrates (presence-absence, abundance, and biomass) to local, landscape, and climatic features, in 45 Patagonian freshwater bodies classified in three groups: isolated ponds, connected ponds, and lotic systems. We first compared the invertebrate community compositions of the different waterbodies. Secondly, using a co-inertia analysis we assessed the relative roles of local, landscape and climatic factors in driving variation in assemblage composition. Finally, we compared different facets of beta diversity and modelled their responses to environmental variables (predictors), by generalized dissimilarity modelling (GDM). Unexpectedly, lotic systems with a total of 109 taxa, were richer than lotic ones, but isolated ponds contributed most to beta diversity and supported more unique and proportionally more endemic species. Alpha and beta diversity were mainly driven by local features and secondly by climatic descriptors. However, these patterns shifted according to different community composition measures. Collectively, our results suggest that isolated ponds have a higher biodiversity value and would be more vulnerable than connected ponds and lotic systems to environmental changes. However, all waterbody types contributed to gamma biodiversity, reinforcing the importance of conserving a diversity of freshwater ecosystems in any landscape and particularly in arid and semiarid Patagonia. Our findings are a first step to resolving and quantifying the amount of changes occurring in Patagonian waterbodies, and are a prerequisite for predicting changes in species distributions in the face of global change. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Ponds Lotic systems Invertebrates Conservation Diversity facets Generalized dissimilarity modelling
类型	Article
语种	英语
国家	Argentina
收录类别	SCI-E
WOS记录号	WOS:000468618900008
WOS关键词	TROPHIC STATE INDEX ; NESTEDNESS COMPONENTS ; SPATIAL-PATTERNS ; SANTA-CRUZ ; LAND-USE ; BIODIVERSITY ; PONDS ; MACROINVERTEBRATES ; REPLACEMENT ; TURNOVER
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218700
作者单位	1.UNPSJB, CONICET, Ctr Invest Esquel Montana & Estepa Patagon, Roca 780, Esquel, Chubut, Argentina; 2.Univ Nacl Patagonia San Juan Bosco, Fac Ciencias Nat & Ciencias Salud, Esquel, Chubut, Argentina
推荐引用方式 GB/T 7714	Epele, Luis B.,Brand, Cecilia,Laura Miserendino, Maria. Ecological drivers of alpha and beta diversity of freshwater invertebrates in arid and semiarid Patagonia (Argentina)[J],2019,678:62-73.
APA	Epele, Luis B.,Brand, Cecilia,&Laura Miserendino, Maria.(2019).Ecological drivers of alpha and beta diversity of freshwater invertebrates in arid and semiarid Patagonia (Argentina).SCIENCE OF THE TOTAL ENVIRONMENT,678,62-73.
MLA	Epele, Luis B.,et al."Ecological drivers of alpha and beta diversity of freshwater invertebrates in arid and semiarid Patagonia (Argentina)".SCIENCE OF THE TOTAL ENVIRONMENT 678(2019):62-73.