Data/hora: 06/06/2024 08:08:20

Provedor de dados: | 42
País: | Brazil
Título: | Distributional patterns of herbivore megamammals during the Late Pleistocene of South America
Autores: | GALLO,VALERIA; AVILLA,LEONARDO S.; PEREIRA,RODRIGO C.L.; ABSOLON,BRUNO A.
Data: | 2013-06-01
Ano: | 2013
Palavras-chave: | Distributional patterns; Historical Biogeography; Panbiogeography; Megafauna; Late Pleistocene; South America.
Resumo: | The geographic distribution of 27 species of the South American megafauna of herbivore mammals during the Late Pleistocene was analyzed in order to identify their distributional patterns. The distribution of the species was studied using the panbiogeographical method of track analysis. Six generalized tracks (GTs) and two biogeographic nodes were obtained. The GTs did not completely superpose with the areas of open savanna present in Pleistocene, nor with the biotic tracks of some arthropods typical of arid climate, indicating that these animals avoided arid environment. Overall, the GTs coincided with some biogeographic provinces defined on the basis of living taxa, indicating that certain current distributional patterns already existed in Pleistocene. The biogeographic nodes coincided with the borders between the main vegetal formations of the Pleistocene, showing that the type of vegetation had great influence in the distribution of the mammalian megafauna. The node 1 confirmed the existence of contact zones between paleobiogeographic regions near Argentina-Uruguay border. The node 2 connects the Brazilian Intertropical regions.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200533
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/S0001-37652013000200005
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.85 n.2 2013
Fonte: | info:eu-repo/semantics/openAccess