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Ecol Lett. 2015 Sep;18(9):944-53. doi: 10.1111/ele.12474. Epub 2015 Jul 20.

Species traits and climate velocity explain geographic range shifts in an ocean-warming hotspot.

Author information

1
Biodiversity Research Centre, University of British Columbia, 2212 Main Mall, Vancouver, BC, V6T 1Z4, Canada.
2
Earth to Ocean Research Group, Department of Biological Sciences, Simon Fraser University, Burnaby, V5A 1S6, Canada.
3
Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, 7001, Australia.
4
CSIRO Oceans and Atmosphere Flagship, Hobart, 7001, Australia.
5
School of Plant Biology & UWA Oceans Institute, The University of Western Australia, Crawley, 6009, Australia.
6
Australian Institute of Marine Science, 39 Fairway, Crawley, 6009, Australia.
7
The Marine Biological Association of the United Kingdom, The Laboratory, Plymouth, PL1 2PB, UK.
8
CSIRO Oceans and Atmosphere Flagship, Floreat, 6014, WA, Australia.
9
School of Earth and Environment, The University of Western Australia, Crawley, 6009, Australia.
10
Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, Southampton, SO14 3ZH, UK.

Abstract

Species' ranges are shifting globally in response to climate warming, with substantial variability among taxa, even within regions. Relationships between range dynamics and intrinsic species traits may be particularly apparent in the ocean, where temperature more directly shapes species' distributions. Here, we test for a role of species traits and climate velocity in driving range extensions in the ocean-warming hotspot of southeast Australia. Climate velocity explained some variation in range shifts, however, including species traits more than doubled the variation explained. Swimming ability, omnivory and latitudinal range size all had positive relationships with range extension rate, supporting hypotheses that increased dispersal capacity and ecological generalism promote extensions. We find independent support for the hypothesis that species with narrow latitudinal ranges are limited by factors other than climate. Our findings suggest that small-ranging species are in double jeopardy, with limited ability to escape warming and greater intrinsic vulnerability to stochastic disturbances.

KEYWORDS:

Benthic invertebrates; climate change; climate response; fishes; functional traits; invasion; range expansion; range shifts; range size

PMID:
26189556
DOI:
10.1111/ele.12474
[Indexed for MEDLINE]

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