Changes in the distribution of multispecies pest assemblages affect levels of crop damage in warming tropical Andes

© 2014 John Wiley & Sons Ltd.

Détails bibliographiques
Publié dans:Global change biology. - 1999. - 21(2015), 1 vom: 12. Jan., Seite 82-96
Auteur principal: Crespo-Pérez, Verónica (Auteur)
Autres auteurs: Régnière, Jacques, Chuine, Isabelle, Rebaudo, François, Dangles, Olivier
Format: Article en ligne
Langue:English
Publié: 2015
Accès à la collection:Global change biology
Sujets:Journal Article Research Support, Non-U.S. Gov't Phthorimaea operculella Symmetrischema tangolias Tecia solanivora agricultural pests climate change climatic variability hazard mapping heterogeneous landscapes plus... individual based model potato tuber moth
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520 |a Climate induced species range shifts might create novel interactions among species that may outweigh direct climatic effects. In an agricultural context, climate change might alter the intensity of competition or facilitation interactions among pests with, potentially, negative consequences on the levels of damage to crop. This could threaten the productivity of agricultural systems and have negative impacts on food security, but has yet been poorly considered in studies. In this contribution, we constructed and evaluated process-based species distribution models for three invasive potato pests in the Tropical Andean Region. These three species have been found to co-occur and interact within the same potato tuber, causing different levels of damage to crop. Our models allowed us to predict the current and future distribution of the species and therefore, to assess how damage to crop might change in the future due to novel interactions. In general, our study revealed the main challenges related to distribution modeling of invasive pests in highly heterogeneous regions. It yielded different results for the three species, both in terms of accuracy and distribution, with one species surviving best at lower altitudes and the other two performing better at higher altitudes. As to future distributions our results suggested that the three species will show different responses to climate change, with one of them expanding to higher altitudes, another contracting its range and the other shifting its distribution to higher altitudes. These changes will result in novel areas of co-occurrence and hence, interactions of the pests, which will cause different levels of damage to crop. Combining population dynamics and species distribution models that incorporate interspecific trade-off relationships in different environments revealed a powerful approach to provide predictions about the response of an assemblage of interacting species to future environmental changes and their impact on process rates 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Phthorimaea operculella 
650 4 |a Symmetrischema tangolias 
650 4 |a Tecia solanivora 
650 4 |a agricultural pests 
650 4 |a climate change 
650 4 |a climatic variability 
650 4 |a hazard mapping 
650 4 |a heterogeneous landscapes 
650 4 |a individual based model 
650 4 |a potato tuber moth 
700 1 |a Régnière, Jacques  |e verfasserin  |4 aut 
700 1 |a Chuine, Isabelle  |e verfasserin  |4 aut 
700 1 |a Rebaudo, François  |e verfasserin  |4 aut 
700 1 |a Dangles, Olivier  |e verfasserin  |4 aut 
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773 1 8 |g volume:21  |g year:2015  |g number:1  |g day:12  |g month:01  |g pages:82-96 
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