Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/81213
Type: Artigo de periódico
Title: Predicting invasive potential of smooth crotalaria (Crotalaria pallida) in Brazilian national parks based on African records
Author: Fonseca, RL
Guimaraes, PR
Morbiolo, SR
Scachetti-Pereira, R
Peterson, AT
Abstract: Alien weed species rank among the most important threats to conservation of biodiversity, making understanding the extent to which protected natural areas are vulnerable to invasion by weeds pivotal in long-term maintenance and conservation of biodiversity. We investigated the potential geographic range of the invasive paleotropical weed, smooth crotalaria, in protected natural areas across Brazil. The ecological niche dimensions of smooth crotalaria in Africa (its putative original distribution) were modeled using a genetic algorithm. Models for the native range and their projections to South America showed good predictive ability when challenged with independent occurrence data. All Brazilian protected natural areas were predicted as highly vulnerable to invasion by this species. However, smooth crotalaria appears more likely to occur in open (savanna-like vegetation, such as cerrado and pantanal) and highly fragmented (Atlantic forest) areas than in extensive closed forests (Amazon). Management suggestions and research priorities are outlined based on these results.
Subject: alien species
conservation policies
conservation units
ecological niche models
geographic distribution
Country: EUA
Editor: Weed Sci Soc Amer
Citation: Weed Science. Weed Sci Soc Amer, v. 54, n. 3, n. 458, n. 463, 2006.
Rights: fechado
Identifier DOI: 10.1614/WS-05-059R4.1
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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