Horizon / Plein textes La base de ressources documentaires de l'IRD

IRD

Publications des scientifiques de l'IRD

Laë Raymond. Effect of drought, dams and fishing pressure on the fisheries of the Central Delta on the Niger river. International Journal of Ecology and Environmental Sciences, 1994, 20, p. 119-128. ISSN 0377-015X

Fichier PDF disponible http://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_6/b_fdi_35-36/40721.pdf
(1 Mo)

Titre
Effect of drought, dams and fishing pressure on the fisheries of the Central Delta on the Niger river
Année de publication1994
Type de documentArticle
AuteursLaë Raymond.
SourceInternational Journal of Ecology and Environmental Sciences, 1994, 20, p. 119-128. ISSN 0377-015X
RésuméThe fishing sector in Mali is now in a general slump. The Sahelian drought is primarily responsible for the low flooding, the decrease of floodplains and the lack of fish recruitment. During the lowest flood years, fish landings may decline by 40,000 metric tons. Dams built for agricultural or electrical use are also playing a part in reducing floodplain area: in 1989, the decrease of production was estimated at 5,000 tons, for landings of about 45,000 metric tons. During the dry season, the stock of adults, which are particularly in danger of overfishing, is partly ensured by the releasing of water from dams which disturb fishing. The crisis which come from a natural phenomenon has developed sociological and economical disruptions. The number of fishermen has doubled in the last 20 years and the catch per effort has reduced according to the decline of catches. Thus communal strife has increased. (Résumé d'auteur)
Plan de classement040PECHE03
DescripteursMILIEU DELTAIQUE ; PLAINE INONDABLE ; BARRAGE ; SECHERESSE ; CONSEQUENCE ECOLOGIQUE ; RESSOURCES HALIEUTIQUES ; STOCK ; SUREXPLOITATION ; PRODUCTION HALIEUTIQUE
Descr. géo.MALI ; NIGER DELTA CENTRE
LocalisationFonds IRD [F B40721] ; Montpellier (Centre IRD)
Identifiant IRDfdi:40721
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:40721

Export des données

Accès direct

Bureau du chercheur

Site de la documentation

Espace intranet IST (accès réservé)

Suivi des publications IRD (accès réservé)

Mentions légales

Services Horizon

Poser une question

Consulter l'aide en ligne

Déposer une publication (accès réservé)

S'abonner au flux RSS

Voir les tableaux chronologiques et thématiques

Centres de documentation

Bondy

Montpellier (centre IRD)

Montpellier (MSE)

Cayenne

Nouméa

Papeete

Abidjan

Dakar

Niamey

Ouagadougou

Tunis

La Paz

Quito