NDLI: Modelling the risk of invasion by the red-swamp crayfish (Procambarus clarkii): incorporating local variables to better inform management decisions

Content Provider	Springer Nature Link
Author	Moreira, Francisco D. Ascensão, Fernando Capinha, César Rodrigues, Diana Segurado, Pedro Santos Reis, Margarida Rebelo, Rui
Copyright Year	2014
Abstract	The correct modelling of the potential distribution of an invasive species is crucial to define effective management and monitoring strategies. Here we compared the results of models built at different spatial scales to identify the areas at risk of invasion by the red swamp crayfish (Procambarus clarkii) in the northwest of Portugal. Firstly, we surveyed crayfish at 97 locations. Secondly, we used presence–absence data and local variables to model its current distribution (local variables model) and identified slope and river width as the best explanatory factors. Thirdly, we integrated these two local variables into a former model built for the Iberian Peninsula (regional model) increasing considerably its predictive power. Finally, we compared both models focusing on the area predicted to be invaded. The local model showed a considerably narrower extent of suitable areas for crayfish in the study area than the regional model. These results show that the refinement of regional scale predictions through the incorporation of species-environment relationships at local scales may be important for supporting management decisions. By not integrating the effects of local variability, regional bioclimatic models may overlook the potential distribution of this invader at manageable extents. Results further suggest that a wide range of native ecosystems of conservation value are probably unsuitable for this invasive species.
Starting Page	273
Ending Page	285
Page Count	13
File Format	PDF
ISSN	13873547
Journal	Biological Invasions
Volume Number	17
Issue Number	1
e-ISSN	15731464
Language	English
Publisher	Springer International Publishing
Publisher Date	2014-06-01
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biological invasions Red swamp crayfish Risk assessment Spatial Scale Species distribution models Ecology Freshwater & Marine Ecology Plant Sciences Developmental Biology
Content Type	Text
Resource Type	Article
Subject	Ecology Ecology, Evolution, Behavior and Systematics

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