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Abundances and biological traits of fish sampled by electrofishing (except specific abundance indices) on the River Oir since 1988 (France).

Latest version published by Institut National de la Recherche Agronomique (INRA) on Sep 12, 2018 Institut National de la Recherche Agronomique (INRA)

Since 1988, an annual campaign is conducted to quantify by electrofishing the abundance of fishes in the Oir basin. Originally, the main target species were salmon and trout. Beginning in 2000, eels were monitored in the same way as salmonids. The inventory of the entire fish community has been carried out on a network of seven sites. It is usually done in September and october. Two sites are also monitored in May for all species The data consist of 1738 electrofishing operations and 138765 fish caught. Biological traits measured on the fish sampled are sex, maturity status, length, weight and age. Some of the salmon, trout and eels are identified individually with a pit tag. Scale sampling is carried out on a sample to estimate the age of the fish. The survey is carried out under the Research Observatory on Diadromous Fish in Coastal Streams (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 142,148 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)
    142148
  • MeasurementOrFact 
    995036

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 142,148 records in English (7 MB) - Update frequency: unknown
Metadata as an EML file download in English (27 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:

Marchand F., Azam D., Delanoë R., Destouches J-P; Tremblay J., Baglinière J-L., Nevoux M. and Prévost E. 2017. Abundances and biological traits of of fish sampled by electrofishing (except specific abundance indices) on the River Oir since 1988 (France).

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 (CC-BY) 4.0 License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: 6242ca69-c65e-4723-b629-9aeb05b51c88.  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; Observation; Population density; population distribution; catch effort; salmo salar; salmon

Contacts

Who created the resource:

Frédéric Marchand
Researcher
INRA-U3E 65 rue de St Brieuc, CS 84215 35042 Rennes FR +33223485786
Didier Azam
Researcher
INRA-U3E 65 rue de St Brieuc, CS 84215 35042 Rennes FR +33223485786
Richard Delanoë
Researcher
AFB-DAST Le moulin de Cerisel 50220 Ducey FR +330688155198
Jean-Pierre Destouches
Researcher
INRA-U3E 65 rue de St Brieuc, CS 84215 35042 Rennes FR +33223485786
Julien Tremblay
Researcher
INRA-U3E 65 rue de St Brieuc, CS 84215 35042 Rennes FR +33 223485786
Jean-Luc Baglinière
Researcher
INRA-ESE 65 rue de St Brieuc, CS 84215 35042 Rennes FR +33 223485447
Marie Nevoux
Researcher
INRA-ESE 65 rue de St Brieuc, CS 84215 35042 Rennes FR +33223485235
Etienne Prévost
Researcher
INRA-ECOBIOP Aquapôle - Ibarron 64310 St-Pée-sur-Nivelle FR +33559515983

Who can answer questions about the resource:

Frédéric Marchand
Researcher
INRA-U3E 65 rue de St Brieuc, CS 84215 35042 Rennes FR +33223485786

Who filled in the metadata:

Frédéric Marchand
Researcher
INRA-U3E 65 rue de St Brieuc, CS 84215 35042 Rennes FR +33223485786

Who else was associated with the resource:

Distributor
GBIF France
IT support
GBIF France 43 rue Buffon 75005 Paris FR
Originator
Didier Azam
Researcher
INRA-U3E 65 rue de St Brieuc, CS 84215 35042 Rennes FR +33223485786
Principal Investigator
Etienne Prévost
Researcher
INRA-ECOBIOP Aquapôle - Ibarron 64310 St-Pée-sur-Nivelle FR +33559515983
Content Provider
Frédéric Marchand
Researcher
INRA-U3E 65 rue de St Brieuc, CS 84215 35042 Rennes FR +33223485786
Content Provider
Richard Delanoë
n/a
AFB-DAST Le moulin de Cerisel 50220 Ducey FR +330688155198
Content Provider
Julien Tremblay
Researcher
INRA-U3E 65 rue de St Brieuc, CS 84215 35042 Rennes FR +33 223485786
Programmer
Nadine Herrard
-
INRA-U3E 65 rue de St Brieuc, CS 84215 35042 Rennes FR +33 223485773
Content Provider
Jean-Luc Baglinière
Researcher
INRA-ESE 65 rue de St Brieuc, CS 84215 35042 Rennes FR +33 223485447
Content Provider
Marie Nevoux
Researcher
INRA-ESE 65 rue de St Brieuc, CS 84215 35042 Rennes FR +33 223485235
Content Provider
Jean-Pierre Destouches
Researcher
INRA-U3E 65 rue de St Brieuc, CS 84215 35042 Rennes FR +33 223485786

Geographic Coverage

The OIR, a coastal river in Normandy (France)

Bounding Coordinates South West [48.6, -1.29], North East [48.68, -1.1]

Taxonomic Coverage

Freswater fish and crayfish

Temporal Coverage

Start Date / End Date 1988-10-03 / 2017-10-11

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:

Point Of Contact
Etienne Prévost

Sampling Methods

Since 1988, an annual campaign is conducted to quantify by electrofishing the abundance of fishes in the Oir basin. Over the years, sampling has been conducted at 49 sites spread along the mainstem and 53 situated on six tributaries. Originally, the main target species were salmon and trout. Beginning in 2000, eels were monitored in the same way as salmonids. The inventory of the entire fish community has been carried out on a network of seven sites. It is usually done in autumn. Two sites on two tributaries are also monitored in May for all species.

Study Extent Oir river : Latitude ranges from 48.6840 to 48.5985; longitude ranges from -1.2949 to -1. 0994. The Oir River is located on the southern edge of Normandy. It is a tributary of the Sélune, a coastal river that flows into the Bay of Mont Saint-Michel. The Oir is 21 km long and has a mean gradient of 1.1%. Annual mean discharge is 1.1 m3/s and the drainage basin area is 85.4 km2, which is dominated by sedimentary schist and metamorphic hornfels with granite inclusions. Agriculture is the main human activity and land use. Migratory fish cannot access the upper Sélune because a dam located 15 km from the sea blocks them. The Oir, with a 16 km long section accessible to Atlantic salmon, is the main spawning ground and the most productive tributary of the Sélune hydrographic network.

Method step description:

  1. Electrofishing surveys were part of long-term monitoring programmes on each river and followed consistent protocols with standardised effort. Fish capture was carried out with different electrofishing equipment using similar settings (direct current, 200-300V). When the target is only salmonids and eels, electrofishing is carried out on a set of sites spread over the entire river network of the Oir River. The capture efficiency is evaluated by carrying out 2 passages on several representative sites.
  2. 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 (hereafter length to the nearest millimetre,mm), except for fish whose caudal fin has no fork and for which the total length has been measured. Fish are then weighed (0.2 g precision) and examined for evidence of sexual maturity (mature if it had a soft and distended underbelly from enlarged gonads [Frome] or produced milt when massaged gently. Scales and a piece of fin are taken from a subsample of individuals. Some of the salmon, trout and eels are identified individually with a pit tag. All the fish sampled are then released in their original site.
  3. Age is verified from scale reading according to standard methods described by (Baglinière and Le Louarn, 1987) and (Richard and Bagliniere, 1990).

Collection Data

Collection Name Colisa - Collection of Ichtylogical Samples
Collection Identifier https://www6.inra.fr/diapfc/Collections
Specimen preservation methods Dried,  Other,  No treatment
Curatorial Units Count 9,707 +/- 0 Fin ,  Count 16,567 +/- 0 Scale

Bibliographic Citations

  1. 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.
  2. 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 6242ca69-c65e-4723-b629-9aeb05b51c88
http://ipt.gbif.fr/resource?r=inra_pe_oir