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TTER Evidence of climatic niche shift during biological invasion
| Citations: | 47 - 5 self |
BibTeX
@MISC{Broennimann_tterevidence,
author = {O. Broennimann and U. A. Treier and H. Müller-schärer and W. Thuiller and A. T. Peterson and A. Guisan},
title = {TTER Evidence of climatic niche shift during biological invasion},
year = {}
}
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Abstract
Niche-based models calibrated in the native range by relating species observations to climatic variables are commonly used to predict the potential spatial extent of speciesÕ invasion. This climate matching approach relies on the assumption that invasive species conserve their climatic niche in the invaded ranges. We test this assumption by analysing the climatic niche spaces of Spotted Knapweed in western North America and Europe. We show with robust cross-continental data that a shift of the observed climatic niche occurred between native and non-native ranges, providing the first empirical evidence that an invasive species can occupy climatically distinct niche spaces following its introduction into a new area. The models fail to predict the current invaded distribution, but correctly predict areas of introduction. Climate matching is thus a useful approach to identify areas at risk of introduction and establishment of newly or not-yet-introduced neophytes, but may not predict the full extent of invasions
Keyphrases
climatic niche shift tter evidence biological invasion invasive specie climatic niche potential spatial extent specie invasion current invaded distribution not-yet-introduced neophyte distinct niche space full extent observed climatic niche non-native range predict area invaded range climate matching climatic variable niche-based model climatic niche space western north america spotted knapweed native range useful approach specie observation approach relies first empirical evidence robust cross-continental data new area
