4.6 Article

Pet distribution modelling: Untangling the invasive potential of Trachemys dorbigni (Emydidae) in the Americas

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PLOS ONE
卷 16, 期 11, 页码 -

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PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0259626

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资金

  1. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq/ MCTIC) [206876/2017-3, 309095/2016-6, 150621/2018-3]
  2. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq/ MCTIC) (Synthesis Center on Biodiversity and Ecosystem Services) [152411/2020-8, 151224/ 2021-8]
  3. Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES/MEC)

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The study assessed the invasive potential of the South American turtle Trachemys dorbigni in the Americas using climatic and human activity variables. Results indicate that human activities enable the species to establish populations outside its original climatic niche, highlighting the importance of considering human activity in prevention measures.
Human activities have been changing the global biogeographic patterns by the introductions of invasive species. For reptiles, the invasion rate increase of non-native species is remarkably related to the pet trade, especially for freshwater turtles. Here we estimated the invasive potential of the South American turtle Trachemys dorbigni in the Americas using a combination of climatic and human activity variables. We built species distribution models based on data from the native and invasive ranges, using the ensemble model from five different algorithms (GAM, MAXENT, BRT, RF and GBM). We compared the two models' performance and predictions, one calibrated with only climatic variables (climate-driven), and the second also included a descriptive variable of human activity (climate plus humandriven). Suitable areas for T. dorbignicovered occurrence areas of its congeners and highly diversified ecoregions, such as the eastern USA, the islands of Central America, and the south eastern and eastern Brazilian coast. Our results indicate that human activities allow T. dorbigni to establish populations outside of its original climatic niche. Including human activity variables proved fundamental to refining the results to identify more susceptible areas to invasion and to allow the efficient targeting of prevention measures. Finally, we suggested a set of actions to prevent T. dorbigni becoming a highly impacting species in the areas identified as more prone to its invasion.

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