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Caracterização e história biogeográfica dos ecossistemas secos neotropicais. (Portuguese)
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- Additional Information
- Alternate Title:
Characterization and biogeographic history of neotropical dry ecosystems. (English)
- Abstract:
The Neotropical region holds the largest species richness in the globe, occurring from Central Mexico to southern of Brazil. In this paper, we aim to summarize the main information available in the literature that characterizes the Neotropical biomes of Seasonally Dry Forests (SDF), Chaco and Savannas. Here we surveyed and reviewed biogeographic hypotheses concerning these environments that seek to explain their historical dynamics. Our goal is to offer a characterization of these biomes as a major step towards the understanding of the main hypotheses biogeographical associated with them. Although it supports an attractive scenario for research, Neotropical species are poorly studied, and questions concerning their ecological aspects, origin, evolutionary history and maintenance of the high biodiversity are unknown or even little understood. Although our review presents researches with different points of view regarding the biogeographic dynamics of vegetation formations, there is a consensus of being the product of a complex interaction between the historical, ecological and biological processes. Biodiversity studies of threatened regions, such as the Neotropic, are guidance for simulations and impacts predictions, for plans and research strategies. [ABSTRACT FROM AUTHOR]
- Abstract:
A região Neotropical, detentora da maior riqueza de espécies no globo, ocorre do México Central ao sul do Brasil. Neste trabalho, buscamos sumarizar as principais informações disponíveis na literatura que caracterizam os biomas neotropicais de Florestas Sazonalmente Seca (FTSS), Chaco e Savanas. Revisamos hipóteses biogeográficas concernentes a esses ambientes que buscam explicar sua dinâmica histórica. Nosso objetivo é oferecer uma caracterização desses biomas como etapa principal para o entendimento das principais hipóteses biogeográficas a eles associadas. Ainda que comporte como um cenário atraente para pesquisa, as espécies neotropicais são pouco estudas, sendo questões referentes a seus aspectos ecológicos, origem, história evolutiva e manutenção da elevada biodiversidade desconhecidas ou, ainda, pouco compreendidas. Embora, nossa revisão apresente pesquisas com diferentes pontos de vista quanto à dinâmica biogeográfica das formações vegetais, há consenso de que é produto de complexa interação entre os processos históricos, ecológicos e biológicos. Os estudos em biodiversidade de regiões ameaçadas, como os Neotrópicos, são norteadores para simulações e previsões de impactos, planos e estratégias de pesquisa. [ABSTRACT FROM AUTHOR]
- Abstract:
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