English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/87463
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Mapping Posidonia oceanica from IKONOS

AuthorsFornes, A.; Basterretxea, Gotzon ; Orfila, Alejandro ; Jordi, Antoni ; Álvarez-Díaz, Alberto ; Tintoré, Joaquín
Issue Date2006
CitationISPRS Journal of Photogrammetry and Remote Sensing 60(5): 315-322 (2006)
AbstractPosidonia oceanica is the dominant seagrass in the Mediterranean Sea that affects biological, biogeochemical and physical processes in Mediterranean coastal areas. The widespread loss of this species is attributed to excessive anthropic pressure and other large-scale environmental changes. Seagrass conservation requires mapping to estimate the extent of existing stocks and to measure changes over time. Optical remote sensing provides a cost-effective method to monitor vast areas of shallow waters that are potential P. oceanica habitat. As part of an interdisciplinary research effort, where the effects of these seagrasses on the hydrodynamics were investigated, new technologies of reliable, fast and effective monitoring of P. oceanica were essential. This paper presents a method for using IKONOS multispectral imagery for bottom classification in a shallow coastal area of Mallorca (Balearic Islands). After applying a supervised classification, pixels are automatically classified in four classes: sand, rock, P. oceanica bottoms and unclassifiable pixels. Results indicate that, in these clear waters, the spectral response of P. oceanica can be determined to a depth of about 15 m. In order to validate the method, the image classification is compared with a bottom classification derived from an acoustical survey. Agreement with the reference acoustic seabed classification is up to 84% for the sampled area. Spectral IKONOS image analysis is presented as an effective approach for monitoring P. oceanica meadows in most clear, shallow waters of the western Mediterranean. © 2006 International Society for Photogrammetry and Remote Sensing, Inc. (ISPRS).
Identifiersdoi: 10.1016/j.isprsjprs.2006.04.002
issn: 0924-2716
Appears in Collections:(IMEDEA) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.