DOI: 10.1111/gcb.12419
论文题名: Dietary guild composition and disaggregation of avian assemblages under climate change
作者: Ko C.-Y. ; Schmitz O.J. ; Barbet-Massin M. ; Jetz W.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期: 3 起始页码: 790
结束页码: 802
语种: 英语
英文关键词: Avian
; Climate change
; Community composition
; Dispersal
; Guild assembly
; Species distributions
Scopus关键词: bird
; climate change
; climate effect
; community composition
; diet
; environmental factor
; geographical distribution
; guild
; uncertainty analysis
; Africa
; Asia
; South America
; Aves
; animal
; article
; biodiversity
; bird
; classification
; climate change
; community composition
; diet
; dispersal
; guild assembly
; species distributions
; theoretical model
; avian
; climate change
; community composition
; dispersal
; guild assembly
; species distributions
; Animals
; Biodiversity
; Birds
; Climate Change
; Diet
; Models, Theoretical
英文摘要: Climate change is expected to cause geographic redistributions of species. To the extent that species within assemblages have different niche requirements, assemblages may no longer remain intact and dis- and reassemble at current or new geographic locations. We explored how climate change projected by 2100 may transform the world's avian assemblages (characterized at a 110 km spatial grain) by modeling environmental niche-based changes to their dietary guild structure under 0, 500, and 2000 km-dispersal distances. We examined guild structure changes at coarse (primary, high-level, and mixed consumers) and fine (frugivores, nectarivores, insectivores, herbivores, granivores, scavengers, omnivores, and carnivores) ecological resolutions to determine whether or not geographic co-occurrence patterns among guilds were associated with the magnitude to which guilds are functionally resolved. Dietary guilds vary considerably in their global geographic prevalence, and under broad-scale niche-based redistribution of species, these are projected to change very heterogeneously. A nondispersal assumption results in the smallest projected changes to guild assemblages, but with significant losses for some regions and guilds, such as South American insectivores. Longer dispersal distances are projected to cause greater degrees of disassembly, and lead to greater homogenization of guild composition, especially in northern Asia and Africa. This arises because projected range gains and losses result in geographically heterogeneous patterns of guild compensation. Projected decreases especially of primary and mixed consumers most often are compensated by increases in high-level consumers, with increasing uncertainty about these outcomes as dispersal distance and degree of guild functional resolution increase. Further exploration into the consequences of these significant broad-scale ecological functional changes at the community or ecosystem level should be increasingly on the agenda for conservation science. © 2013 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61983
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, United States; School of Forestry and Environmental Studies, Yale University, New Haven, CT, United States; Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan; Muséum National d'Histoire Naturelle, UMR 7204 MNHN-CNRS-UPMC, Conservation des espèces, Restauration et Suivi des Populations, Paris, France
Recommended Citation:
Ko C.-Y.,Schmitz O.J.,Barbet-Massin M.,et al. Dietary guild composition and disaggregation of avian assemblages under climate change[J]. Global Change Biology,2014-01-01,20(3)