DOI: 10.1111/gcb.12740
论文题名: Climate change in our backyards: The reshuffling of North America's winter bird communities
作者: Princé K. ; Zuckerberg B.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 2 起始页码: 572
结束页码: 585
语种: 英语
英文关键词: Avian ecology
; Citizen science
; Climate change
; Community temperature index
; Project FeederWatch
; Winter warming
Scopus关键词: bird
; climate change
; climate effect
; community response
; community structure
; overwintering
; population dynamics
; warming
; North America
; Aves
; adaptation
; animal
; animal dispersal
; bird
; Canada
; climate change
; Mexico
; physiology
; population dynamics
; season
; species difference
; time factor
; United States
; Adaptation, Physiological
; Animal Distribution
; Animals
; Birds
; Canada
; Climate Change
; Mexico
; Population Dynamics
; Seasons
; Species Specificity
; Time Factors
; United States
英文摘要: Much of the recent changes in North American climate have occurred during the winter months, and as result, overwintering birds represent important sentinels of anthropogenic climate change. While there is mounting evidence that bird populations are responding to a warming climate (e.g., poleward shifts) questions remain as to whether these species-specific responses are resulting in community-wide changes. Here, we test the hypothesis that a changing winter climate should favor the formation of winter bird communities dominated by warm-adapted species. To do this, we quantified changes in community composition using a functional index - the Community Temperature Index (CTI) - which measures the balance between low- and high-temperature dwelling species in a community. Using data from Project FeederWatch, an international citizen science program, we quantified spatiotemporal changes in winter bird communities (n = 38 bird species) across eastern North America and tested the influence of changes in winter minimum temperature over a 22-year period. We implemented a jackknife analysis to identify those species most influential in driving changes at the community level and the population dynamics (e.g., extinction or colonization) responsible for these community changes. Since 1990, we found that the winter bird community structure has changed with communities increasingly composed of warm-adapted species. This reshuffling of winter bird communities was strongest in southerly latitudes and driven primarily by local increases in abundance and regional patterns of colonization by southerly birds. CTI tracked patterns of changing winter temperature at different temporal scales ranging from 1 to 35 years. We conclude that a shifting winter climate has provided an opportunity for smaller, southerly distributed species to colonize new regions and promote the formation of unique winter bird assemblages throughout eastern North America. © 2014 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61865
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest and Wildlife Ecology, University of Wisconsin-Madison, Madison, WI, United States
Recommended Citation:
Princé K.,Zuckerberg B.. Climate change in our backyards: The reshuffling of North America's winter bird communities[J]. Global Change Biology,2015-01-01,21(2)