DOI: 10.1111/gcb.12169
论文题名: Upward ant distribution shift corresponds with minimum, not maximum, temperature tolerance
作者: Warren R.J. ; Chick L.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 7 起始页码: 2082
结束页码: 2088
语种: 英语
英文关键词: Aphaenogaster picea
; Aphaenogaster rudis
; Physiological tolerance
; Regional climate
; Seed dispersers
; Southern appalachian mountains
; Species distributions
Scopus关键词: acclimation
; ant
; climate change
; elevation
; movement
; regional climate
; seed dispersal
; spatial distribution
; temperature tolerance
; acclimatization
; animal
; ant
; article
; biodiversity
; climate change
; physiology
; population dynamics
; population migration
; temperature
; United States
; Acclimatization
; Animal Migration
; Animals
; Ants
; Biodiversity
; Climate Change
; Georgia
; Population Dynamics
; Temperature
; Appalachians
; Georgia
; United States
; Aphaenogaster
; Aphaenogaster picea
; Aphaenogaster rudis
; Formicidae
; Picea
英文摘要: Rapid climate change may prompt species distribution shifts upward and poleward, but species movement in itself is not sufficient to establish climate causation. Other dynamics, such as disturbance history, may prompt species distribution shifts resembling those expected from rapid climate change. Links between species distributions, regional climate trends and physiological mechanism are needed to convincingly establish climate-induced species shifts. We examine a 38-year shift (1974-2012) in an elevation ecotone between two closely related ant species, Aphaenogaster picea and A. rudis. Even though A. picea and A. rudis are closely related with North American distributions that sometimes overlap, they also exhibit local- and regional-scale differences in temperature requirements so that A. rudis is more southerly and inhabits lower elevations whereas A. picea is more northerly and inhabits high elevations. We find considerable movement by the warm-habitat species upward in elevation between 1974 and 2012 with A. rudis, replacing the cold-habitat species, A. picea, along the southern edge of the Appalachian Mountain chain in north Georgia, USA. Concomitant with the distribution shifts, regional mean and maximum temperatures remain steady (1974-2012), but minimum temperatures increase. We collect individuals from the study sites and subject them to thermal tolerance testing in a controlled setting and find that maximum and minimum temperature acclimatization occurs along the elevation gradient in both species, but A. rudis consistently becomes physiologically incapacitated at minimum and maximum temperatures 2 °C higher than A. picea. These results indicate that rising minimum temperatures allow A. rudis to move upward in elevation and displace A. picea. Given that Aphaenogaster ants are the dominant woodland seed dispersers in eastern deciduous forests, and that their thermal tolerances drive distinct differences in temperature-cued synchrony with early blooming plants, these climate responses not only impact ant-ant interactions, but might have wide implications for ant-plant interactions. © 2013 Blackwell Publishing Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62399
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Biology, SUNY Buffalo State, 1300 Elmwood Avenue, Buffalo, NY, 14222, United States; Department of Ecology and Evolutionary Biology, University of Tennessee, 569 Dabney Hall, Knoxville, TN, 37996, United States
Recommended Citation:
Warren R.J.,Chick L.. Upward ant distribution shift corresponds with minimum, not maximum, temperature tolerance[J]. Global Change Biology,2013-01-01,19(7)