説明
A survey started in 2016 and is conducted every year in early autumn (September to early october) to quantify the abundance of european eel in the Bresle, Normandy. The electrofishing protocol of eel abundance indices (2022) is used. It targets juveniles of european eels, but older fish are also caught and included in this dataset. Sampling is restricted to areas with shallow running water. The data consist of abundance indices and biological traits measured on the fish sampled: length, weight. 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 species.
データ レコード
この オカレンス（観察データと標本) リソース内のデータは、1 つまたは複数のデータ テーブルとして生物多様性データを共有するための標準化された形式であるダーウィン コア アーカイブ (DwC-A) として公開されています。 コア データ テーブルには、339 レコードが含まれています。
拡張データ テーブルは1 件存在しています。拡張レコードは、コアのレコードについての追加情報を提供するものです。 各拡張データ テーブル内のレコード数を以下に示します。
この IPT はデータをアーカイブし、データ リポジトリとして機能します。データとリソースのメタデータは、 ダウンロード セクションからダウンロードできます。 バージョン テーブルから公開可能な他のバージョンを閲覧でき、リソースに加えられた変更を知ることができます。
バージョン
次の表は、公にアクセス可能な公開バージョンのリソースのみ表示しています。
引用方法
研究者はこの研究内容を以下のように引用する必要があります。:
Josset Q., Flesselle A., Floquet A., Macquet T., Beaulaton and Marchand F. (2024). Abundances and biological traits of eels sampled in the survey of eels abundance Indices in the Bresle river (France)
権利
研究者は権利に関する下記ステートメントを尊重する必要があります。:
パブリッシャーとライセンス保持者権利者は Institut national de recherche pour l’agriculture, l’alimentation et l’environnement (INRAE)。 This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.
GBIF登録
このリソースをはGBIF と登録されており GBIF UUID: faa02037-fddd-4c62-9f28-2d0d0fee2468が割り当てられています。 GBIF France によって承認されたデータ パブリッシャーとして GBIF に登録されているInstitut national de recherche pour l’agriculture, l’alimentation et l’environnement (INRAE) が、このリソースをパブリッシュしました。
キーワード
Population density; catch effort
連絡先
- 最初のデータ採集者 ●
- 連絡先
- Engineer
- 92 Chaussée de Picardie
- +33 22 76 37 50 78
- 最初のデータ採集者
- Technician
- 92 Chaussée de Picardie
- +33 22 76 37 50 78
- 最初のデータ採集者
- Technician
- 92 Chaussée de Picardie
- 最初のデータ採集者
- Technician
- 92 Chaussée de Picardie
- +33 22 76 37 50 78
- 最初のデータ採集者
- Engineer
- 65 rue de Saint Brieuc
- メタデータ提供者
- Engineer
- 65 rue de Saint Brieuc
- プログラマー
- Engineer
- 65 rue de St Brieuc, CS 84215
- +33223485786
地理的範囲
The Bresle river in Normandy (France). http://www.sandre.eaufrance.fr/geo/CoursEau/G01-0400
| 座標（緯度経度） | 南 西 [-90, -180], 北 東 [90, 180] |
|---|
時間的範囲
| 開始日 / 終了日 | 2016-10-03 / 2023-10-15 |
|---|
プロジェクトデータ
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-L'Institut Agro-UPPA 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.
| タイトル | 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 |
|---|---|
| ファンデイング | - INRAE : French National Institute for Agricultural, Food en Environment Research - OFB : French Office for Biodiversity. - Data collected on troutin the framework of the ORE DiaPFC have been included in the national program for the data collect in support of scientific advice for the Common Fisheries Policy for the European regulations on fisheries management. In this context, INRAE and OFB contribute to the National Work Program piloted by the DPMA of the Ministry of the Environment. This program is financially supported by FEAMP and FEAMPA |
| 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 |
| 研究の意図、目的、背景など（デザイン） | 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. |
収集方法
On the Bresle, sampling is conducted at 14 sites spread along the mainstem, in the area of the hydrographic network colonized by the European eel.
| Study Extent | 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:
- Fish capture was carried out with a portable 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. In the case of a watercourse of reduced width, only one is used. 2. The anode scans an area about 2-2.5 m upstream of the dip-nets in the vein of water filtered by them. The electric current is applied for a duration of 30s, with a circuit cut after 15s and for a duration of 2s. 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. The electric field is variable, adapted to the conductivity of the water. In the areas where there are many roots or stones, the operator may have to fish longer in order to attract the fish out of their hiding place. 4. Individuals are transferred into a bucket previously filled with water. 5. The whole team moves from bank to bank 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 and the team goes the other way. 6. 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 tip of the caudal fin (1 millimeter precision). Fish are then weighed (0.2 g precision). All the fish sampled are then released in their original site of capture.
追加のメタデータ
This data set is intended to be updated annually.
| 代替識別子 | faa02037-fddd-4c62-9f28-2d0d0fee2468 |
|---|---|
| https://ipt.gbif.fr/resource?r=bresle-iaa |