Ichthyogeographic regions and watershed size in the French river Rhône network
Identifieur interne : 001244 ( Main/Exploration ); précédent : 001243; suivant : 001245Ichthyogeographic regions and watershed size in the French river Rhône network
Auteurs : T. Changeux [France] ; D. Pont [France]Source :
- Hydrobiologia [ 0018-8158 ] ; 1995-03-01.
Descripteurs français
- Wicri :
- geographic : France.
English descriptors
- KwdEn :
Abstract
Abstract: Fish community structure can be considered at several scales. The watershed is the largest geographic unit connecting freshwater systems. It describes the upstream-downstream gradient resulting from changes in flow rates. The watershed can also extend over distinct ecological regions. The number of native fish species recorded in each sub-watershed directly connected to the Rhône is strongly correlated with the area of the sub-watershed. Three major groups of sub-watersheds can be retained as ichthyogeographic regions: the Saône region, dominated by a large alluvial plain and rich in species, the Isère region representing the north and central Alpine rivers and the Durance region, strongly influenced by the Mediterranean climate. The River Rhône basin reveals a high diversity of native faunal regions which have to be considered in monitoring and managing the network.
Url:
DOI: 10.1007/BF00024476
Affiliations:
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Changeux</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire d'Ecologie des Systèmes Fluviaux, URA CNRS 1451, Université Cl. Bernard, 1 rue Parmentier, 13200, Arles</wicri:regionArea><placeName><region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region><settlement type="city">Arles</settlement></placeName></affiliation></author><author><name sortKey="Pont, D" sort="Pont, D" uniqKey="Pont D" first="D." last="Pont">D. Pont</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire d'Ecologie des Systèmes Fluviaux, URA CNRS 1451, Université Cl. 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The watershed is the largest geographic unit connecting freshwater systems. It describes the upstream-downstream gradient resulting from changes in flow rates. The watershed can also extend over distinct ecological regions. The number of native fish species recorded in each sub-watershed directly connected to the Rhône is strongly correlated with the area of the sub-watershed. Three major groups of sub-watersheds can be retained as ichthyogeographic regions: the Saône region, dominated by a large alluvial plain and rich in species, the Isère region representing the north and central Alpine rivers and the Durance region, strongly influenced by the Mediterranean climate. The River Rhône basin reveals a high diversity of native faunal regions which have to be considered in monitoring and managing the network.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Provence-Alpes-Côte d'Azur</li></region><settlement><li>Arles</li></settlement></list><tree><country name="France"><region name="Provence-Alpes-Côte d'Azur"><name sortKey="Changeux, T" sort="Changeux, T" uniqKey="Changeux T" first="T." last="Changeux">T. Changeux</name></region><name sortKey="Pont, D" sort="Pont, D" uniqKey="Pont D" first="D." last="Pont">D. Pont</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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