STUDY OF TERRITORIAL DISTRIBUTION OF THE MANGRO-VE SPECIES RHIZOPHORA MANGLE, RHIZOPHORA RACE-MOSA, AND PELLICIERA RHIZOPHORAE, ON TÉRRABA-SIERPE NATIONAL WETLANDS, 2012.
ISBN 978-85-88783-11-9
Authors
1Acuña, F.
1GEOGRAFIA Email: jeka_a03@hotmail.com
Abstract
STUDY OF TERRITORIAL DISTRIBUTION OF THE MANGRO-VE SPECIES RHIZOPHORA MANGLE, RHIZOPHORA RACE-MOSA, AND PELLICIERA RHIZOPHORAE, ON TÉRRABA-SIERPE NATIONAL WETLANDS, 2012. Abstract. Coastal marine ecosystems such as mangroves are influenced by the presence of salt and fresh water, are distributed in the tropics and in some cases in the subtropics. In Costa Rica are located in both the Pa-cific coast and the coast of the Caribbean Sea. In the last decade, hu-man actions such as forest clearing for planting mangrove rice agro-chemicals discharge to course of rivers, erosion and sedimentation in-frastructure development, these ecosystems have deteriorated. The objective of this investigation was to identify and determine the distri-bution of species of Rhizophora mangle and Rhizophora racemosa Pel-liciera rhizophorae in Terraba-Sierpe National Wetland by remote sen-sors. The research was conducted in two stages: (a) use of GIS for pro-cessing and supervised classification of an image Rapid Eye 2012 with Spectral Angle Mapper classifier and (b) validation of the map with con-trol points taken field using a Global Positioning System. A map of land cover was obtained, with an area of 3 295ha distributed: 1487ha occu-pied by P. rhizophorae equivalent to 47% of the area, 1033ha of R. man-gle and Pelliciera rhizophorae both with 32% coverage, the remaining area corresponds to other land cover 775 ha. We conclude that the spe-cies with the highest prevalence was P. rhizophorae research is recom-mended to follow up human actions are affecting other areas of the wet-land.
Keywords
Satellite image; supervised classification; Geographic Information System