Signatures of range expansion and erosion in eastern North American trees

被引:46
|
作者
Murphy, Helen T. [1 ]
VanDerWal, Jeremy [2 ]
Lovett-Doust, Jon [3 ]
机构
[1] CSIRO Ecosyst Sci & Climate Adaptat Flagship, Atherton, Qld 4883, Australia
[2] James Cook Univ, Sch Marine & Trop Biol, Ctr Trop Biodivers & Climate Change, Townsville, Qld 4811, Australia
[3] Nipissing Univ, Sch Grad Studies, N Bay, ON P1B8L7, Canada
关键词
Abundance; climate change; geographic range; latitude; leading edge; occupancy; trailing edge; RAPID CLIMATE-CHANGE; SPECIES DISTRIBUTIONS; GEOGRAPHIC RANGE; GLACIAL REFUGIA; LATE QUATERNARY; CHANGE IMPACTS; HABITAT LOSS; ABUNDANCE; EXTINCTION; RESPONSES;
D O I
10.1111/j.1461-0248.2010.01526.x
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
P>Abundance and occupancy of populations at high- and low-latitude geographic range edges will be critically important in determining a species' response to climate change. Low abundance and occupancy at expanding (high latitude) edges of the range may limit a species capacity to migrate, and at trailing (low latitude) edges, may result in range erosion and regional extinction. We examined abundance-occupancy distributions across the geographic ranges of 102 eastern North American trees and looked for signatures reflecting capacity to respond to climate change. We found that 62% of species display a signature consistent with higher climatic suitability in the northern latitudes of their range. However, our results suggest that the most common response is likely to involve range erosion in the south and limited range expansion in the north, possibly leading to an overall reduction in range size for many species. In particular, species with smaller ranges centred at lower latitudes may not have the capacity to successfully track the current rate of climate change.
引用
收藏
页码:1233 / 1244
页数:12
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