Data/hora: 08/06/2024 13:38:42

Provedor de dados: | 5
País: | France
Título: | Application of spot data to a base-line ecological study of the mahakam delta mangroves (east kalimantan, indonesia)
Autores: | Dutrieux, Eric; Denis, Jacques; Populus, Jacques.
Data: | 1990
Ano: | 1990
Palavras-chave: | Mangroves; Ecosystème deltaïque; Succession de communautés; Teledetection; Pollution par hydrocarbures; Mangroves; Estuarine ecosystems; Communities succession; Remote sensing; Oil pollution.
Resumo: | The objective of this study is to explain the spatial and temporal distribution of the vegetal communities of the Mahakam delta, chiefly on the basis of its physical and chemical characteristics. The delta is at present subjected to intense oil exploitation, and it is necessary to describe the situation on the site and its natural evolution in arder to be able to evaluate the damage that accidentai oil spillage could cause. The authors provide elements to define the sensitive zones whose protection should be a matter of priority. SPOT imagery was chosen as the tool allowing such an approach on a delta measuring 1 500 km2 SPOT satellite images of the Mahakam delta show that different plant communities succeed one another bath in time and in space. The sedimentation zones are colonized first by Sonneratia caseolaris, which saon gives way to a fairly varied formation, dominated by Avicennia sp. This species is gradually replaced either by ferns (Acrostichum), or by Nypa fruticans which covers most of the delta. Lastly, towards the apex of the delta, Heritiera littoralis forms a transition between tbe Nypa communities and the tropical rain forest. The peripheral zones are the most diversified, and also the most sensitive to oil impact, while the Nypa communities, subjected to permanent natural stress (very high salinity variations), constitute the most resistant species found. The peripheral zones, which are the richest, thus deserve particular attention in case of accidentai oil spillage.
Tipo: | Text
Idioma: | Inglês
Identificador: | http://archimer.ifremer.fr/doc/00131/24251/22244.pdf
Editor: | Gauthier-Villars
Relação: | http://archimer.ifremer.fr/doc/00131/24251/
Formato: | application/pdf
Fonte: | Oceanologica Acta (0399-1784) (Gauthier-Villars), 1990 , Vol. 13 , N. 3 , P. 317-326
Fonte: | Gauthier-Villars