Use este identificador para citar ou linkar para este item: http://repositorio.bc.ufg.br/handle/ri/11122
Tipo do documento: Artigo
Título: Predicting the current distribution and potential spread of the exotic grass eragrostis plana nees in South America and identifying a bioclimatic niche shift during invasion
Autor: Barbosa, Fabiana G.
Pillar, Valério D.
Palmer, Anthony R.
Melo, Adriano Sanches
Abstract: Eragrostis plana (Poaceae) is a perennial grass introduced from South Africa to the state of Rio Grande do Sul in southern Brazil. Currently, it is considered an invasive grass in several regions of the world, including South America, where it has caused negative ecological and socio-economic impacts. Ecological niche models, using bioclimatic variables, are often used to predict the potential distribution of invasive species. In this study we prepared two bioclimatic models for E. plana using the Genetic Algorithm for Rule-set Production, the first based on data from its native region (South Africa) and the second on data from both the native and invaded (South America) regions.We then projected each model onto South America to identify regions vulnerable to invasion by the species, and compared our results with available records of the species in South America. Finally, we explored the model’s predictions for the existence of a bioclimatic niche shift during the invasion process of E. plana in South America, using multivariate statistical analysis. The model created with native distribution data was only able to predict (with highly suitable habitat) the region of introduction of E. plana in South America. However, the current distribution, as well as the region of introduction of the species, was reliably predicted by the model created with data from both native and invaded regions. Our multivariate analysis supports a hypothesis of bioclimatic niche shift during the invasion process of E. plana in South America.
Palavras-chave: Bioclimatic variable
Ecological niche model
GARP
Invasive grass
Native pasture
País: brasil
Programa: Programa de Pós-Graduação em Ecologia e Evolução
Citação: BARBOSA, Fabiana G.; PILLAR, Valério D.; PALMER, Anthony R.; MELO, Adriano S. Predicting the current distribution and potential spread of the exotic grass eragrostis plana nees in South America and identifying a bioclimatic niche shift during invasion. Austral Ecology, v. 38, p. 260-267, May 2013. Disponível em: <http://onlinelibrary.wiley.com/doi/10.1111/j.1442-9993.2012.02399.x/epdf>.
Tipo de acesso: Acesso Aberto
Identificador do documento: 10.1111/j.1442-9993.2012.02399.x
Identificador do documento: 10.1111/j.1442-9993.2012.02399.x
URI: http://repositorio.bc.ufg.br/handle/ri/11122
Data de publicação: Mai-2013
Aparece nas coleções:ICB - Artigos publicados em periódicos

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