Abundances and biological traits of the juveniles salmon sampled in the survey of Salmon abundance Indices in the Bresle river (France)

Latest version published by Institut National de la Recherche Agronomique (INRA) on Nov 4, 2019 Institut National de la Recherche Agronomique (INRA)

A survey started in 2016 is conducted every year in early autumn (September to early october) to quantify the abundance of juvenile Atlantic salmon in the Bresle In Normandy. The electrofishing protocol of Prévost and Baglinière (1995) is used. It targets Atlantic salmon young of the year (0+ parr), but older fish (juvenile salmon ≥1+) are also caught and included in this dataset. Sampling is restricted to areas with shallow running water flowing on coarse bottom substrate, i.e. the preferred habitat of young of the year salmon. The data consist of abundance indices and biological traits measured on the fish sampled: length, weight and age. The latter is ascertained from scale samples taken from the fish which size does not allow to determine their age unambiguously. The survey is carried out under the Research Observatory on Diadromes Fishes in Coastal Streamss (ERO DiaPFC) program. The data are stored in the database of the ERO. They are used to develop predictive models and tools for providing scientific advice to improve the management of this heritage species.

Data Records

The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 112 records. 1 extension data tables also exist. An extension record supplies extra information about a core record. The number of records in each extension data table is illustrated below.

  • Occurrence (core)
    112
  • MeasurementOrFact 
    896

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

Downloads

Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

Data as a DwC-A file download 112 records in English (13 KB) - Update frequency: unknown
Metadata as an EML file download in English (18 KB)
Metadata as an RTF file download in English (18 KB)

Versions

The table below shows only published versions of the resource that are publicly accessible.

How to cite

Researchers should cite this work as follows:

Josset Q, Lentieul J, Flesselle A, Macquet T, Petit L, Beaulaton L (2019): Abundances and biological traits of the juveniles salmon sampled in the survey of Salmon abundance Indices in the Bresle river (France). v1.1. Institut National de la Recherche Agronomique (INRA). Dataset/Occurrence. http://ipt.gbif.fr/resource?r=inra_rennes_bresle&v=1.1

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is Institut National de la Recherche Agronomique (INRA). This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC) 4.0 License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: 2a4fd70a-468d-4af6-8ff3-d81adefb79f6.  Institut National de la Recherche Agronomique (INRA) publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF France.

Keywords

Occurrence; Population density; population distribution; catch effort; salmo salar; salmon

Contacts

Who created the resource:

Quentin Josset
-
AFB DRED, INRA U3E, Pôle AFB-INRA-Agrocampus Ouest-UPPA pour la gestion des migrateurs amphihalins dans leur environnement Rue des Fontaines 76260 Eu FR +33 (0)2 27 28 06 11
Jérôme Lentieul
-
AFB DRED, INRA U3E, Pôle AFB-INRA-Agrocampus Ouest-UPPA pour la gestion des migrateurs amphihalins dans leur environnement Rue des Fontaines 76260 Eu FR +33 (0)2 27 28 06 11
Aurélie Flesselle
-
INRA U3E, Pôle AFB-INRA-Agrocampus Ouest-UPPA pour la gestion des migrateurs amphihalins dans leur environnement Rue des Fontaines 76260 Eu FR +33 (0)2 27 28 06 11
Tony Macquet
-
EPTB Bresle Rue des Fontaines 76260 Eu FR +33 (0)2 27 28 06 11
Laurent Petit
-
AFB DRED, INRA U3E, Pôle AFB-INRA-Agrocampus Ouest-UPPA pour la gestion des migrateurs amphihalins dans leur environnement Rue des Fontaines 76260 Eu FR +33 (0)2 27 28 06 11
Laurent Beaulaton
-
AFB DRED, INRA U3E, Pôle AFB-INRA-Agrocampus Ouest-UPPA pour la gestion des migrateurs amphihalins dans leur environnement 65 rue Saint Brieuc 35042 Rennes FR 33 (0)2 23 48 56 64

Who can answer questions about the resource:

Frédéric Marchand
-
INRA U3E, Pôle AFB-INRA-Agrocampus Ouest-UPPA pour la gestion des migrateurs amphihalins dans leur environnement 65 rue de St Brieuc, CS 84215 35042 Rennes FR +33 223485786

Who filled in the metadata:

Frédéric Marchand
-
INRA U3E, Pôle AFB-INRA-Agrocampus Ouest-UPPA pour la gestion des migrateurs amphihalins dans leur environnement 65 rue de St Brieuc, CS 84215 35042 Rennes FR +33 223485786

Who else was associated with the resource:

Distributor
GBIF France
IT support
GBIF France 43 rue Buffon 75005 Paris FR +33140798065

Geographic Coverage

The Bresle river in Normandy (France).

Bounding Coordinates South West [49.737, 1.285], North East [50.131, 1.969]

Taxonomic Coverage

No Description available

Species  Salmo salar

Temporal Coverage

Start Date / End Date 2016-10-06 / 2018-09-12

Project Data

The Research Observatory on Diadromous Fish in Coastal Streams (ORE DiaPFC) is a research infrastructure steered by INRA in partnership with AFB and part of the AFB-INRA 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
Funding INRA
Study Area Description 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.

The personnel involved in the project:

Principal Investigator
Etienne Prévost

Sampling Methods

In the Bresle, sampling is conducted at 8 sites spread along the mainstem in the area of the hydrographic network colonized by Atlantic salmon. The sites are visited in 3 years, 2 in the first year, 4 in the second and 2 in the third year.

Study Extent Bresle river, CdSandre=G01-0400 Source latitude and longitude : 49.6909, 1.7498 Last confluence point latitude and longitude : 50.0644, 1.37 The Bresle is a small coastal river that flows into the English Channel, in the commune of Le Tréport. 68.1 km separate in a straight line its source, in the commune of Abancourt in Oise (60) from its mouth. However, the particular hydrology of limestone substratum rivers, as well as the multiplication throughout the history of mills and other structures along its course, more than doubles the length of the actual watercourse. The river drains a watershed of nearly 748 km², composed mainly of a chalky substrate dating back to the upper Cretaceous. The basin has historically been marked by the glass industry, but also by the paper industry, as well as by gravel extraction. Agricultural practices that were once mainly focused on dairy farming and grazing are now shifting towards the production of maize, protein crops for livestock, and potatoes. Migratory salmonids can now reach the municipality of Saint-Germain-sur-Bresle, just over 50 km from the sea.

Method step description:

  1. Age is verified from scale reading according to standard methods described by (Baglinière and Le Louarn, 1987) and (Richard and Bagliniere, 1990).
  2. Fish capture was carried out with a backpack electrofishing equipment. The same gear was used since the beginning of the data collection, namely a Martin Pêcheur from DREAM Electronique, It is tuned to produce a pulsed DC with a 400 Hz frequency, 250-300 volts and a square-waveform between 4 and 10% duty cycle. Fishing is operated according to the following steps : 1. Two large dip-nets with metal frames are placed facing the current, lying on the bottom, and kept at a fixed position. 2. The anode scans an area of about 4-5 m upstream of the dip-nets in the vein of water filtered by them. 3. Fish attracted by the anode and shocked go down into the nets guided by the electrode and driven by the water flow. If necessary, the fish stuck on the bottom or in aquatic vegetation are recovered by a small hand net. 4. Individuals are transferred into a bucket previously filled with water. 5. The whole team moves laterally several meters out of the area that has just been disturbed by the electric field, the carrier of the electrofishing gear taking care of not to step on the area he will next explore with the anode. When a bank is reached, the progression is a few meters upstream. Then steps 1-5 are repeatedThe sampling at a given site stops after 5 minutes of actual fishing – i.e. the duration when the electric field is applied in the water - measured directly on the counter of the electric fishing equipment. Juvenile abundance is quantified by the number of individuals captured for a unit effort (5 minutes of fishing under the conditions specified above). Biometric measurement of the fish are recorded after their anesthesia with benzocaïne. The fish length is measured from the tip of the mouth to the fork of the caudal fin (1 millimeter precision). Fish are then weighed (0.2 g precision) and maturity status is assessed by a gentle pressure on the belly that allows to get sperm in mature males. All the fish sampled are then released in their original site.

Collection Data

Collection Name Colisa - Collection of Ichtyological Samples
Collection Identifier https://colisa.fr/
Specimen preservation methods Dried,  No treatment

Bibliographic Citations

  1. Prévost E., Baglinière J.-L., 1995. Présentation et premiers éléments de mise au point d'une méthode simple d'évaluation du recrutement en juvéniles de saumon atlantique (Salmo salar) de l'année en eau courante, p. 39-48. In Gascuel D., Durand J.L., Fonteneau A., (Eds.) Les recherches françaises en évaluation quantitative et modélisation des ressources et des systèmes halieutiques. Colloques et séminaires, ORSTOM éditions, Paris.
  2. Prévost E., Nihouarn A., 1999. Relation entre indicateur d'abondance de type CPUE et estimation de densité par enlèvements successifs pour les juvéniles de saumon atlantique (Salmo salar L.) de l'année. Bull. Fr. Pêche Piscic., 352 : 19-30.
  3. Baglinière, J. L., and Le Louarn, H. 1987. Caractéristiques scalimétriques des principales espèces de poissons d’eau douce de France. Bulletin Français de la Pêche et de la Pisciculture: 1–39.
  4. Richard, A., and Bagliniere, J. L. 1990. Description et interprétation des écailles de truites de mer (Salmo trutta L.) de deux rivières de Basse-Normandie : l’Orne et la Touques. Bulletin Français de la Pêche et de la Pisciculture: 239–257.

Additional Metadata

This data set is intended to be updated annually.

Alternative Identifiers 2a4fd70a-468d-4af6-8ff3-d81adefb79f6
http://ipt.gbif.fr/resource?r=inra_rennes_bresle