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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Landscape changes in a neotropical forest-savanna ecotone zone in central Brazil: The role of protected areas in the maintenance of native vegetation

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Autor(es):
Garcia, Andrea S. ; Sawakuchi, Henrique O. ; Ferreira, Manuel Eduardo ; Ballester, Maria Victoria R.
Número total de Autores: 4
Tipo de documento: Artigo Científico
Fonte: Journal of Environmental Management; v. 187, p. 16-23, FEB 1 2017.
Citações Web of Science: 7
Resumo

In the Amazon-savanna ecotone in northwest Brazil, the understudied Araguaia River Basin contains high biodiversity and seasonal wetlands. The region is representative of tropical humid-dry ecotone zones, which have experienced intense land use and land cover (LULC) conversions. Here we assessed the LULC changes for the last four decades in the central portion of the Araguaia River Basin to understand the temporal changes in the landscape composition and configuration outside and inside protected areas. We conducted these analyzes by LULC mapping and landscape metrics based on patch classes. During this period, native vegetation was reduced by 26%. Forests were the most threatened physiognomy, with significant areal reduction and fragmentation. Native vegetation cover was mainly replaced by croplands and pastures. Such replacement followed spatial and temporal trends related to the implementation of protected areas and increases in population cattle herds. The creation of most protected areas took place between 1996 and 2007, the same period during which the conversion of the landscape matrix from natural vegetation'to agriculture occurred. We observed that protected areas mitigate fragmentation, but their roles differ according to their location and level of protection. Still, we argue that landscape characteristics, such as suitability for agriculture, also influence landscape conversions and should be considered when establishing protected areas. The information provided in this study can guide new research on species conservation and landscape planning, as well as improve the understanding of the impacts of landscape composition and configuration changes. (C) 2016 Elsevier B.V. All rights reserved. (AU)

Processo FAPESP: 07/01686-2 - Alteração no uso e cobertura do solo na região da Ilha do Bananal (Tocantins)
Beneficiário:Henrique Oliveira Sawakuchi
Linha de fomento: Bolsas no Brasil - Mestrado
Processo FAPESP: 03/13172-2 - O papel dos sistemas fluviais amazônicos no balanço regional e global de carbono: evasão de CO2 e interações entre os ambientes terrestres e aquáticos
Beneficiário:Reynaldo Luiz Victória
Linha de fomento: Auxílio à Pesquisa - Temático