Summit-to-Sea mapping and change detection using satellite imagery: tools for conservation and management of coral reefs

 

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Detalles Bibliográficos
Autores: Saphiro, A. C., Rohmann, S. O.
Formato: artículo original
Estado:Versión publicada
Fecha de Publicación:2005
Descripción:Continuous summit-to-sea maps showing both land features and shallow-water coral reefs have been completed in Puerto Rico and the U.S. Virgin Islands, using circa 2000 Landsat 7 Enhanced Thematic Mapper (ETM+) Imagery. Continuous land/sea terrain was mapped by merging Digital Elevation Models (DEM) with satellite-derived bathymetry. Benthic habitat characterizations were created by unsupervised classifications of Landsat imagery clustered using field data, and produced maps with an estimated overall accuracy of >75% (Tau coefficient >0.65). These were merged with Geocover-LC (land use/land cover) data to create continuous land/ sea cover maps. Image pairs from different dates were analyzed using Principle Components Analysis (PCA) in order to detect areas of change in the marine environment over two different time intervals: 2000 to 2001, and 1991 to 2003. This activity demonstrates the capabilities of Landsat imagery to produce continuous summit-tosea maps, as well as detect certain changes in the shallow-water marine environment, providing a valuable tool for efficient coastal zone monitoring and effective management and conservation.
País:Portal de Revistas UCR
Institución:Universidad de Costa Rica
Repositorio:Portal de Revistas UCR
Lenguaje:Inglés
OAI Identifier:oai:portal.ucr.ac.cr:article/26656
Acceso en línea:https://revistas.ucr.ac.cr/index.php/rbt/article/view/26656
Access Level:acceso abierto
Palabra clave:remote sensing
benthic habitats
change analysis
Landsat
coral reefs
mapping
Sensores remotos
hábitat béntico
análisis de cambios
arrecifes coralinos
mapeo