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Theses

Suivi de la gestion des zones humides camarguaises par télédétection en référence à leur intérêt avifaunistique

Abstract : In spite of the numerous functions and services they provide, wetlands are among the most threatened habitats in the world. The Camargue wetlands do not escape from the impacts of global changes and are increasingly managed to improving yield of agricultural and socio-economic activities. Remote sensing has long been considered as a promising complementary tool for wetland monitoring. Here we show that multi spectral and temporal data issued from high-resolution satellite images combined with a single field campaign permit a wetland follow-up that is replicable over time without re-sampling. We developed robust and reliable models to characterize the evolution of vegetation and flooded areas within marshes enclosing helophytes and hydrophytes, which are well-represented habitats supporting bird species of conservation or economic concern in the Camargue. We used two statistical approaches. The first one is qualitative and determines the presence of certain vegetation types and the presence of water in differing conditions of vegetation density. The second approach is quantitative and permits the monitoring of vegetation parameters that are associated with ecological requirements of vulnerable birds in reed marshes. These models will be most useful for proposing management practices conciliating the preservation and durable use of Mediterranean wetlands.
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https://tel.archives-ouvertes.fr/tel-00292694
Contributor : Aurélie Davranche Connect in order to contact the contributor
Submitted on : Wednesday, July 9, 2008 - 12:18:45 PM
Last modification on : Sunday, June 26, 2022 - 3:32:01 AM
Long-term archiving on: : Friday, September 24, 2010 - 10:23:00 AM

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  • HAL Id : tel-00292694, version 4

Citation

Aurélie Davranche. Suivi de la gestion des zones humides camarguaises par télédétection en référence à leur intérêt avifaunistique. Géographie. Université de Provence - Aix-Marseille I, 2008. Français. ⟨tel-00292694v4⟩

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