Adult shad have been monitored since 1994 by trapping at the Moulin de Tan, with the upstream and downstream traps operating year-round. The configuration of the traps allows only a partial capture according to the flow. A second trap downstream of the Moulin de Leslé installed for the trapping of salmon smolts (April-May) allows the accidental capture of a few adult shad. Phenology and biological traits of migrating adult shad (alosa alosa) sampled by trapping during the survey in the Scorff River (France). In the downstream part of the river Scorff, a trapping system (2 traps downstream, one trap upstream) allows to monitor the migration of adult shad (alosa alosa). On this occasion, biometric characteristics are developed to characterize the population in order to feed this data set. They are measured, weighed, sexed and their tissues and scales are taken. The survey is carried out within the framework of the Research Observatory on Diadromous Fishes of Coastal Rivers (ORE DiaPFC).
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This resource has been registered with GBIF, and assigned the following GBIF UUID: a4223067-27cf-472b-b834-e6cdfa9ce030. Institut national de recherche pour l’agriculture, l’alimentation et l’environnement (INRAE) publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF France.
Occurrence; Observation; Population density; population distribution; catch effort; salmo salar; salmon; Occurrence
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The Scorff, a coastal river in Brittany (France)
|Bounding Coordinates||South West [47.77, -3.34], North East [48.17, -3.25]|
No Description available
|Species||Alosa alosa (shad)|
|Start Date / End Date||1994-06-24 / 2022-03-04|
The Research Observatory on Diadromous Fish in Coastal Streams (ORE DiaPFC) is a research infrastructure steered by INRAE in partnership with OFB and part of the OFB-INRAE R&D center. It’s focused on the study of the evolution of diadromous fish populations under the influence human induced environmental changes that affect these rivers (mainly climate and effects of agriculture). Diadromous species of primary interest are salmon (Salmo salar), trout (Salmo trutta), eel (Anguilla Anguilla), shads (Alosa sp.), and lampreys (Lampetra sp. and Petromyzon marinus). These species are threatened by the consequences of human activities. They are flagship species for the biodiversity of coastal streams. Nowadays, these streams are the main refuges for diadromous fish that have disappeared or dramatically declined on larger rivers. This ERO DiaPFC is a Research Infrastructure based on four coastal streams of the Atlantic and Channel coast of France: the Bresle and the Oir in Normandy, the Scorff in Brittany and the Nivelle in the Pays Basque. These four rivers are equipped with diadromous fish trapping facilities and are thoroughly and continuously surveyed from the mid 1980s. They are twinned with experimental ecology facilities located in Rennes (Brittany) and Saint-Pée-sur-Nivelle (Pays Basque). This set of facilities is complemented by individual-based eco-genetic simulators for in silico experimentation on virtual populations
|Title||ORE-DiaPFC Observatoire de Recherche en Environnement des poissons diadromes sur les Petits Fleuves Côtiers - ERO DiaPFC Ecological Research Observatory on Diadromous Fish in coastal streams|
The personnel involved in the project:
|Collection Name||Colisa - Collection of Ichtyological Samples|
|Specimen preservation methods||Dried, No treatment|
This data set is intended to be updated annually