Évaluation, par télédétection satellitaire, des stocks de Macrocystis pyrifera dans le golfe du Morbihan (archipel de Kerguelen)
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 temperatu...
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Gauthier-Villars
1992
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Online Access: | https://archimer.ifremer.fr/doc/00100/21163/18782.pdf https://archimer.ifremer.fr/doc/00100/21163/ |
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ftarchimer:oai:archimer.ifremer.fr:21163 2023-05-15T17:02:06+02:00 Évaluation, par télédétection satellitaire, des stocks de Macrocystis pyrifera dans le golfe du Morbihan (archipel de Kerguelen) Belsher, T Mouchot, Mc 1992 application/pdf https://archimer.ifremer.fr/doc/00100/21163/18782.pdf https://archimer.ifremer.fr/doc/00100/21163/ fre fre Gauthier-Villars https://archimer.ifremer.fr/doc/00100/21163/18782.pdf https://archimer.ifremer.fr/doc/00100/21163/ info:eu-repo/semantics/openAccess restricted use Oceanologica Acta (0399-1784) (Gauthier-Villars), 1992 , Vol. 15 , N. 3 , P. 297-307 text Publication info:eu-repo/semantics/article 1992 ftarchimer 2021-09-23T20:21:28Z 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. Article in Journal/Newspaper Kerguelen Islands Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Austral Golfe du Morbihan ENVELOPE(70.189,70.189,-49.434,-49.434) Kerguelen Kerguelen Islands Noire ENVELOPE(140.019,140.019,-66.666,-66.666) |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
French |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Belsher, T Mouchot, Mc |
spellingShingle |
Belsher, T Mouchot, Mc Évaluation, par télédétection satellitaire, des stocks de Macrocystis pyrifera dans le golfe du Morbihan (archipel de Kerguelen) |
author_facet |
Belsher, T Mouchot, Mc |
author_sort |
Belsher, T |
title |
Évaluation, par télédétection satellitaire, des stocks de Macrocystis pyrifera dans le golfe du Morbihan (archipel de Kerguelen) |
title_short |
Évaluation, par télédétection satellitaire, des stocks de Macrocystis pyrifera dans le golfe du Morbihan (archipel de Kerguelen) |
title_full |
Évaluation, par télédétection satellitaire, des stocks de Macrocystis pyrifera dans le golfe du Morbihan (archipel de Kerguelen) |
title_fullStr |
Évaluation, par télédétection satellitaire, des stocks de Macrocystis pyrifera dans le golfe du Morbihan (archipel de Kerguelen) |
title_full_unstemmed |
Évaluation, par télédétection satellitaire, des stocks de Macrocystis pyrifera dans le golfe du Morbihan (archipel de Kerguelen) |
title_sort |
évaluation, par télédétection satellitaire, des stocks de macrocystis pyrifera dans le golfe du morbihan (archipel de kerguelen) |
publisher |
Gauthier-Villars |
publishDate |
1992 |
url |
https://archimer.ifremer.fr/doc/00100/21163/18782.pdf https://archimer.ifremer.fr/doc/00100/21163/ |
long_lat |
ENVELOPE(70.189,70.189,-49.434,-49.434) ENVELOPE(140.019,140.019,-66.666,-66.666) |
geographic |
Austral Golfe du Morbihan Kerguelen Kerguelen Islands Noire |
geographic_facet |
Austral Golfe du Morbihan Kerguelen Kerguelen Islands Noire |
genre |
Kerguelen Islands |
genre_facet |
Kerguelen Islands |
op_source |
Oceanologica Acta (0399-1784) (Gauthier-Villars), 1992 , Vol. 15 , N. 3 , P. 297-307 |
op_relation |
https://archimer.ifremer.fr/doc/00100/21163/18782.pdf https://archimer.ifremer.fr/doc/00100/21163/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
_version_ |
1766055337099526144 |