Type of resources
Available actions
Topics
INSPIRE themes
Keywords
Contact for the resource
Provided by
Years
Formats
Representation types
Update frequencies
status
Scale
-
-
-
-
Synthèse des observations de faune et de flore réalisées par les agents du Parc national des Ecrins depuis sa création en 1973. Mise à jour continue à partir des différents protocoles d'inventaire et de suivi de la faune et de la flore. Cette synthèse agglomère l'ensemble des observations depuis différents protocoles, en ne gardant que leur tronc commun (Observateurs / Date / Taxon - espèce, basé sur le référence national Taxref du MNHN / Localisation XY / Altitude / Protocole source / Jeu de données / Commune / Organisme producteur de la donnée / Critère d'observation).
-
-
-
Mountain lakes are often situated in protected natural areas, a feature that leads to their role as sentinels of global environmental change. The data contain modelling of bathymetry measured for GIS (Shape) in Lake Muzelle in the Massif des Ecrins (WGS84). LTER - ZA - RZA Zone Atelier Alpes ZAA
-
-
Local glacial fluctuations and flood occurrences were investigated in the sediment sequence of proglacial Lake Muzelle. Composite sediment sequence Muz12-I – april 2012 (IGSN:IEFRA00A4). The sample covers the period from 303 to 2012. Based on geochemical analysis and organic matter content established using loss on ignition and reflectance spectroscopy, we identified six periods of increased glacial activity over the last 1700 yr. Each is in accordance with records from reference glaciers in the Alps. A total of 255 graded layers were identified and interpreted as flood deposits. Most of these occurred during glacial advances such as the Little Ice Age period and exhibit thicker deposits characterized by an increase in the fine grain-size fraction. Fine sediment produced by glacial activity is transported to the proglacial lake during heavy rainfall events. The excess of glacial flour during these periods seems to increase the watershed's tendency to produce flood deposits in the lake sediment, suggesting a strong influence of the glacier on flood reconstruction records. Thus, both flood frequency and intensity, which are estimated based on layer thickness as a proxy, cannot be used in reconstruction of past extreme events because of their variability. There is a need to take into account changes in sediment supply in proglacial areas that could preclude satisfactory interpretation of floods in terms of past climate variability. Glacial fluctuation Glacial focal spot LTER - ZA - RZA Zone Atelier Alpes ZAA
-
Compilation de différentes couches. Les sites retenus sont considérés comme site de référence dans les activités du parc national.