Phenology and biological traits of migrating eels sampled by trapping in the survey in the Bresle river (France)

Quentin Josset1, Jérôme Lentieul1, Aurélie Flesselle2, Tony Macquet3, Laurent Petit1, Quentin Josset4, GBIF France5

1 OFB DRAS, INRAE U3E, Pôle OFB-INRAE-Agrocampus Ouest-UPPA pour la gestion des migrateurs amphihalins dans leur environnement, Rue des Fontaines, 76260, Eu, France; 2 INRAE U3E, Pôle OFB-INRAE-Agrocampus Ouest-UPPA pour la gestion des migrateurs amphihalins dans leur environnement, Rue des Fontaines, 76260, Eu, France; 3 EPTB Bresle, Rue des Fontaines, 76260, Eu, France; 4 OFB DRAS, INRAE U3E, Pôle OFB-INRAE-Agrocampus Ouest-UPPA pour la gestion des migrateurs amphihalins dans leur environnement, Rue des Fontaines, 76260, EU, France; 5 GBIF France, 43 rue Buffon Géologie CP48, 75005, Paris, France

Corresponding author(s): Quentin Josset (quentin.josset@ofb.gouv.fr)Jérôme Lentieul (jerome.lentieul@ofb.gouv.fr)Aurélie Flesselle (aurelie.flesselle@inrae.fr)Tony MacquetLaurent Petit, Quentin Josset (quentin.josset@ofb.gouv.fr)

Received {date}; Revised {date}; Accepted {date}; Published {date}

Citation: Combination of authors, year of data paper publication (in parentheses), Title, Journal Name, Volume, Issue number (in parentheses), and doi of the data paper.

Resource Citation

Josset Q, Lentieul J, Flesselle A, Macquet T, Petit L (2020): Phenology and biological traits of migrating eels sampled by trapping in the survey in the Bresle river (France). v1.1. Institut National de la Recherche Agronomique (INRA). Dataset/Occurrence. http://ipt.gbif.fr/resource?r=inra_ang_bresle&v=1.1

Abstract

Since 1982, migratory eels have been captured on the Bresle basin, first as a bycatch from salmonid trapping, then to observe migration phenology and quantify their abundance. 15 km from the river estuary a trapping system controls silver eels migration for a period of 6 months per year (3-6 months per year historically) and since 1994 an upstream trap captures yellow eel in their upstream migration 3 km from the estuary. On the occasion of the capture, biometric characteristics are taken to characterize the population in order to feed this data set.

Keywords: Occurrence, Observation, Population density, population distribution, catch effort, salmo salar, salmon

Project details

Project 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 
Personnel: Etienne Prévost
Funding: INRAE
Study area descriptions/descriptor: ERO DiaPFC is a Research Infrastructure based on three 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 
Design description: The issue of 'Research Observatory on Diadromes Fish in Coastal Rivers (ORE DiaPFC) is to study the evolution of diadromous fish populations as a result of environmental changes (climate change and changes related to agriculture ) that affect these rivers.

Data published through GBIF: http://ipt.gbif.fr/resource?r=inra_ang_bresle

Taxonomic coverage

Taxonomic ranks
Species: Anguilla anguilla (Linnaeus, 1758)

Spatial coverage

General spatial coverage: The Bresle river in Normandy (France). 
Coordinates: 49°41'24''N and 50°3'36''N Latitude; 1°22'12''E and 1°45'0''E Longitude 

Temporal coverage: March 1, 1982 - December 31, 2018

Methods

Method step description: Elvers have been monitored since 1994 on the Bresle. The trap, which is located, at a distance of 3 km from the estuary, is checked twice a day throughout the elvers’ period of activity, ranging from march to November. 
Study extent description: Elvers are monitored by trapping on the facilities of Eu. As a consequence of its location, the trap does not cover the whole river and a bypass exists a few hundred meters downstream. The effectiveness of the trap is not monitored. 
Sampling description: Since 1994, trapping of upstream-migrating elvers to the upstream parts of the Bresle River has been carried out by using an eel climbing ramp, which provides the eels with a substrate (brushes) that allows them to climb to the trap. Then they are counted and weighted alltogether, or measured in length individually. 

Datasets

Dataset description
Object name: Darwin Core Archive Phenology and biological traits of migrating eels sampled by trapping in the survey in the Bresle river (France)
Character encoding: UTF-8
Format name: Darwin Core Archive format
Format version: 1.0
Distribution: http://ipt.gbif.fr/archive.do?r=inra_ang_bresle
Publication date of data: 2020-03-06
Language: English
Licences of use: Creative Commons Attribution (CC-BY) 4.0 License

Metadata language: English
Date of metadata creation: 2020-02-28
Hierarchy level: Dataset