Autre(s) titre(s) |
Use of satellite imagery in management of giant-kelp resources, morbihan gulf, kerguelen archipelago |
Type |
Article |
Date |
1992 |
Langue(s) |
Français |
Auteur(s) |
Belsher T, Mouchot Mc |
Affiliation(s) |
CTR CANADIEN TELEDETECT, DIV APPLICAT, OTTAWA K1A 0Y7, ONTARIO, CANADA |
Source |
Oceanologica Acta (0399-1784) (Gauthier-Villars), 1992 , Vol. 15 , N. 3 , P. 297-307 |
WOS© Times Cited |
15 |
Résumé en anglais |
Macrocystis pyrifera, algae which grow to about 60 m in length, are widely present in the Kerguelen Islands. A satellite program has been initiated to map these species quantitatively and qualitatively as well as to establish a possible correlation between their occurrence and sea- surface temperature. Data from SPOT-1 and NOAA-11 AVHRR were acquired during the 1988 austral summer around the area of "l'ile Noire". SPOT-1 data processing has permitted estimation of the biomass (wet weight) of Macrocystis pyrifera at 1 106 kt, spread over an area of 186.30 km2 in the Morbihan Gulf. Supervised classification shows that 30 % of the vegetal coverage carries 60 % of the total biomass. These clusters of seaweed represent a potential of 13 220 tons of industrial-quality alginates. NOAA-11 data have permitted the location of SPOT-1 imagery on the Kerguelen archipelago. The different thematic maps obtained by processing the remotely-sensed data have permitted assessment of previously acquired biological and physical data. The validation of the remotely-sensed data was carried out through a ground-truthing mission at the time of acquisition. |
Texte intégral |
Fichier |
Pages |
Taille |
Accès |
18782.pdf |
12 |
891 KB |
Libre accès |
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