دورية أكاديمية
Cartographie de l’herbier du bassin d’Arcachon par télédétection spatiale : potentiel pour le suivi d’un indicateur DCE ; Mapping of the beard of the Arcachon basin by spatial remote sensing: potential for monitoring a DCE indicator
| العنوان: | Cartographie de l’herbier du bassin d’Arcachon par télédétection spatiale : potentiel pour le suivi d’un indicateur DCE ; Mapping of the beard of the Arcachon basin by spatial remote sensing: potential for monitoring a DCE indicator |
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| المؤلفون: | Lafon, Virginie, Dehouck, Aurélie, Montaudouin, Xavier de, Marieu, Vincent, Blanchet, Hugues, Froidefond, Jean-Marie |
| المصدر: | Journées de l'hydraulique |
| بيانات النشر: | Société Hydrotechnique de France Université de Lyon, CNRS & ENS de Lyon |
| سنة النشر: | 2009 |
| مصطلحات موضوعية: | geo, envir |
| جغرافية الموضوع: | pp. 1-5 |
| الوصف: | Seagrass Mapping from Satellite Remote Sensing : A New Strategy for Monitoring a WDF indicator The Water Framework Directive (WFD) requires that all inland and coastal waters within defined river basin districts must reach at least good status by 2015. With this aim, it is recommended (1) to classify the status of each water body according to several ecological quality standards ; (2) to implement operational monitoring techniques in order to evaluate long term changes and to identify the reasons for the observed modifications. Arcachon lagoon (France) is defined as a coastal water body. Among the ecological compartments addressed by the WFD, the aquatic vegetation status must be established in terms of diversity, abundance and spatial extent. This latter aspect is probably the most difficult to derive at the scale of such a large entity, unless comprehensive remote sensing observation tools are used. Recently, a thematic map of the lagoon has been realised using high resolution satellite imagery. The image processing has been validated using in situ observations and assess cover extent and rate. This map shows the spatial distribution of seagrass meadows in summer 2007 together with the vegetation cover and represents the initial status required by the WFD. The objective of the present study is to apply this mapping strategy to a series of satellite images acquired between 2003 and 2006 with the aim (1) to assess the seasonal to interannual variability of seagrass meadows and the actual trends ; (2) to propose an operational tool for intertidal seagrass monitoring. ; La Directive Cadre sur l’Eau (DCE) fixe l'objectif d’atteindre, à l’horizon 2015, le bon état des différents milieux aquatiques sur tout le territoire européen. Dans ce but, il est préconisé (1) d’établir, pour chaque masse d’eau, un état des lieux initial permettant sa classification par rapport aux conditions de référence sur plusieurs compartiments biologiques ; (2) de définir des outils opérationnels afin d’évaluer les changements à long terme ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | French |
| العلاقة: | 10670/1.ecw3rx; https://www.persee.fr/doc/jhydr_0000-0001_2009_act_31_1_5947Test |
| الإتاحة: | https://www.persee.fr/doc/jhydr_0000-0001_2009_act_31_1_5947Test |
| حقوق: | other ; lic_creative-commons |
| رقم الانضمام: | edsbas.A2012CE |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |