干旱区生态环境知识资源中心(Arid): In transition: Avian biogeographic responses to a century of climate change across desert biomes

Arid

DOI	10.1111/gcb.15030
	In transition: Avian biogeographic responses to a century of climate change across desert biomes
	Iknayan, Kelly J.1,2; Beissinger, Steven R.1,2
通讯作者	Iknayan, Kelly J.
来源期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
EISSN	1365-2486
出版年	2020
卷号	26 期号:6 页码:3268-3284
英文摘要	Transition zones between biomes, also known as ecotones, are areas of pronounced ecological change. They are primarily maintained by abiotic factors and disturbance regimes that could hinder or promote species range shifts in response to climate change. We evaluated how climate change has affected metacommunity dynamics in two adjacent biomes and across their ecotone by resurveying 106 sites that were originally surveyed for avian diversity in the early 20th century by Joseph Grinnell and colleagues. The Mojave, a warm desert, and the Great Basin, a cold desert, have distinct assemblages and meet along a contiguous, east-west boundary. Both deserts substantially warmed over the past century, but the Mojave dried while the Great Basin became wetter. We examined whether the distinctiveness and composition of desert avifaunas have changed, if species distributions shifted, and how the transition zone impacted turnover patterns. Avifauna change was characterized by (a) reduced occupancy, range contractions, and idiosyncratic species redistributions; (b) degradation of historic community structure, and increased taxonomic and climatic differentiation of the species inhabiting the two deserts; and (c) high levels of turnover at the transition zone but little range expansion of species from the warm, dry Mojave into the cooler, wetter Great Basin. Although both deserts now support more drier and warmer tolerant species, their bird communities still occupy distinct climatological space and differ significantly in climatic composition. Our results suggest a persistent transition zone between biomes contributes to limiting the redistribution of birds, and highlight the importance of understanding how transition zone dynamics impact responses to climate change.
英文关键词	birds climate change community dynamics Great Basin Desert latitudinal shifts Mojave Desert occupancy transition zones
类型	Article
语种	英语
国家	USA
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000523211000001
WOS关键词	GREAT-BASIN ; POLEWARD SHIFTS ; SPECIES TRAITS ; RANGE SHIFTS ; BIRDS ; METACOMMUNITY ; NORTH ; COMMUNITY ; DISTRIBUTIONS ; TURNOVER
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
来源机构	University of California, Berkeley
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314637
作者单位	1.Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA; 2.Univ Calif Berkeley, Museum Vertebrate Zool, Berkeley, CA 94720 USA
推荐引用方式 GB/T 7714	Iknayan, Kelly J.,Beissinger, Steven R.. In transition: Avian biogeographic responses to a century of climate change across desert biomes[J]. University of California, Berkeley,2020,26(6):3268-3284.
APA	Iknayan, Kelly J.,&Beissinger, Steven R..(2020).In transition: Avian biogeographic responses to a century of climate change across desert biomes.GLOBAL CHANGE BIOLOGY,26(6),3268-3284.
MLA	Iknayan, Kelly J.,et al."In transition: Avian biogeographic responses to a century of climate change across desert biomes".GLOBAL CHANGE BIOLOGY 26.6(2020):3268-3284.