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Vegetative dynamics in mangrove- areas: a comparison of the current state of the art and the evolution during the past 50 years using photography from the air

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Dutch title: Vegetatiedynamiek in mangrovegebieden: vergelijking van de huidige toestand en van de evolutie gedurende de laatste 50 jaar aan de hand van luchtfotografie
Reference no: P101/OZR186
Period: October 1997 till December 1998
Status: Completed

Thesaurus terms: Aerial photography; Coastal waters; Mangroves; Marine biology; Vegetation cover
Geographical term: ISW, Sri Lanka [Marine Regions]

Institutes (2)  Top 
  • Vrije Universiteit Brussel; Faculteit Wetenschappen & Bio-ingenieurswetenschappen; Vakgroep Biologie; Ecology and Biodiversity; Laboratorium voor Algemene Plantkunde en Natuurbeheer (APNA), more, co-ordinator
  • Institutionele werkingstoelagen (v.d. overheid); Universiteiten; Projectmatig onderzoek, more, sponsor

Mangals occur on all tropical coasts and in lagoons (between approximately the 30° latitudinal degrees), when a number of environmental conditions are fulfilled (slope, substrate type, water quality, protection against wave action etc.). In spite of their established ecological and derived economical (coastal fisheries, protection against coastal erosion) and direct economical importance (e.g. timber and fuel), they are still threatened because of lack of protection and lack of management. A rational management requires insight into the vegetation dynamics, which cannot be established over a short period, nor retrospectively, unless a time series of aerial photographs is available. This is the case for the Sri Lankan mangal, studied by the VUB. The programme in the proposal aims at the analysis of vegetation dynamics in mangals of S.W. Sri Lanka on basis of aerial photographs (1956-94). Because within mangal vegetation overview and positioning is extremely difficult (yet necessary for the vegetation recording methodology) a global positioning system is required and applied for in the proposal.

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