Ilhas do litoral norte do estado de São Paulo: paisagem e conservação / Ilhas do litoral norte do estado de São Paulo: paisagem e conservação

AUTOR(ES)
DATA DE PUBLICAÇÃO

2010

RESUMO

To achieve more precise models of conservation units, it´s needed to consider the importance of development of knowledge of the insular dynamics. The main goal of the study was to evaluate the relationship between the types of vegetation found in eight island of northern coast of Sao Paulo state, it´s relationship as well structural features like area, shape, and distance from the shore, using as parameter vegetal species of different stages in ecological sucession in coastal rainforests. Eight islands were selected: Prumirim, Porcos Pequena, Comprida and Das Couves in Ubatuba municipality; Mar Virado, Tamanduá and Maramduba, in Caraguatatuba municipality, and Ilha da Vitória, in Ilhabela complex. The study was developed in three stages: a general overview of the study area, with generation of maps in 1:10,000 scale, including the mapping of vegetation; second, collection of primary data by metric study of landscapes of all islands in the northern coast, evaluating area, shape and isolation. Land field studies in Prumirim island, where most of the data was collected, complemented by iterature evaluation of arboreal species which was also performed to compare species distribution. Third, the mapping of landscapes units and elaboration of a proposal of planning of usage of the studied areas, using three variables: conservation, settling and tourism. Our results include: vegetation maps, where the vegetal covering was measured and compared, and analysis of landscape metrics, which sheds light into insulated areas parameters. The literature analysis of species showed clearly the relevance of pioneer species, which are very frequent in the studied areas. We have identified also a high correlation between the number of species in a given island with its area and shape, in concordance with the island biogeography theory. Finally, from the landscape units studied, we could elaborated a proposal of usage of these islands, identifying a strong potential for ecological tourism, and most importantly, to conservation of these unique areas. We hope that this work can bring new insights into conservation policies in isolated areas.

ASSUNTO(S)

ilhas islands mata atlântica. biogeografia conservação e mata atlântica conservation landscape biogeography paisagem

ACESSO AO ARTIGO

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