Le marais doux endigué de Bourgneuf-Machecoul (Pays de Loire) Premier éléments de connaissance du peuplement piscicole. Relation ichtyofaune-habitat et problèmes majeurs de gestion (Maroc)
The dammed up marshes of the French Atlantic coast cover about 200 000 ha between River Vilaine and the « Bassin d'Arcachon ». Eighty eight % are managed with freshwater. They constitute original environments initially created for agriculture or for salt production, and they are now threatened...
Published in: | Revue des sciences de l'eau |
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Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | French |
Published: |
Université du Québec - INRS-Eau, Terre et Environnement (INRS-ETE)
2005
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Subjects: | |
Online Access: | http://www.erudit.org/fr/revues/rseau/1992-v5-n4-rseau3268/705144ar.pdf https://www.erudit.org/fr/revues/rseau/1992-v5-n4-rseau3268/705144ar.pdf https://id.erudit.org/iderudit/705144ar https://doi.org/10.7202/705144ar https://www.erudit.org/fr/revues/rseau/1992-v5-n4-rseau3268/705144ar/ https://core.ac.uk/display/59609542 https://academic.microsoft.com/#/detail/2165598010 |
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openpolar |
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Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
French |
topic |
Sciences Humaines et Sociales Social Sciences and Humanities Marais littoral endigué marais Breton-Vendéen peuplement piscicole Anguilla anguilla Ictalurus melas densités biomasses répartition spatio-temporelle habitat gestion hydraulique Breton-Vendéen marsh dyked marsh coastal wetland fish community density biomass spatio-temporal distribution water management envir geo |
spellingShingle |
Sciences Humaines et Sociales Social Sciences and Humanities Marais littoral endigué marais Breton-Vendéen peuplement piscicole Anguilla anguilla Ictalurus melas densités biomasses répartition spatio-temporelle habitat gestion hydraulique Breton-Vendéen marsh dyked marsh coastal wetland fish community density biomass spatio-temporal distribution water management envir geo Eric Feunteun Jean-Claude Lefeuvre P. Elie C. Rigaud Le marais doux endigué de Bourgneuf-Machecoul (Pays de Loire) Premier éléments de connaissance du peuplement piscicole. Relation ichtyofaune-habitat et problèmes majeurs de gestion (Maroc) |
topic_facet |
Sciences Humaines et Sociales Social Sciences and Humanities Marais littoral endigué marais Breton-Vendéen peuplement piscicole Anguilla anguilla Ictalurus melas densités biomasses répartition spatio-temporelle habitat gestion hydraulique Breton-Vendéen marsh dyked marsh coastal wetland fish community density biomass spatio-temporal distribution water management envir geo |
description |
The dammed up marshes of the French Atlantic coast cover about 200 000 ha between River Vilaine and the « Bassin d'Arcachon ». Eighty eight % are managed with freshwater. They constitute original environments initially created for agriculture or for salt production, and they are now threatened by land abandonment within the next decade. Concurrently to aquaculture (in created or existing ponds), exploitation of the fish stocks in the ditchweb is likely to encourage a diversification of agricultural activities. Unfortunately, bibliographic analysis reveals the relative scarceness of research about sampling methods and qualitative or quantitative characteristics of these fish communities. This is quite surprising considering the importance of the ditchwed of this kind of environment outlined by several authors. In the Netherlands, BELTMANN (1984) assessed that there is a total of 400 000 km of ditches. In France, the littoral dyked marshes of the Atlantic coast couid comprise 20 000 km of ditches and about 24 000 ha of open water. The present work provides for the first data on the fish community of Bourgneuf marsh.The northern part of the marsh of Bourgneuf, 2 700 ha provided whith f reshwater, contains nearly every kind of landscapes found throughout the whole Breton-Vendéen marsh. The pattern of the ditch network strongly changes from a zone to another (fig.1) : presence of former salt pans in the western part, regular geometric shapes in the recently created polders next to the River Falleron, irregular ditchweb pattern in the eastern part. The average density of the ditch network is 91 m of ditches per ha, totalizing 234 km in the study area. The total surface of open water, composed of ditches and basins (former salt pans), covers 411 ha (over 15 % of the study site). Diversity of ditch types occurs at fine scales (<1 000 m2), they vary according to their widths (0,3 to 7 m), depths (average, 42 cm; SD, 20,4), thickness of silt layer (average, 43 cm; SD, 42) and their hydrophyte vegetation cover (average, ... |
format |
Article in Journal/Newspaper |
author |
Eric Feunteun Jean-Claude Lefeuvre P. Elie C. Rigaud |
author_facet |
Eric Feunteun Jean-Claude Lefeuvre P. Elie C. Rigaud |
author_sort |
Eric Feunteun |
title |
Le marais doux endigué de Bourgneuf-Machecoul (Pays de Loire) Premier éléments de connaissance du peuplement piscicole. Relation ichtyofaune-habitat et problèmes majeurs de gestion (Maroc) |
title_short |
Le marais doux endigué de Bourgneuf-Machecoul (Pays de Loire) Premier éléments de connaissance du peuplement piscicole. Relation ichtyofaune-habitat et problèmes majeurs de gestion (Maroc) |
title_full |
Le marais doux endigué de Bourgneuf-Machecoul (Pays de Loire) Premier éléments de connaissance du peuplement piscicole. Relation ichtyofaune-habitat et problèmes majeurs de gestion (Maroc) |
title_fullStr |
Le marais doux endigué de Bourgneuf-Machecoul (Pays de Loire) Premier éléments de connaissance du peuplement piscicole. Relation ichtyofaune-habitat et problèmes majeurs de gestion (Maroc) |
title_full_unstemmed |
Le marais doux endigué de Bourgneuf-Machecoul (Pays de Loire) Premier éléments de connaissance du peuplement piscicole. Relation ichtyofaune-habitat et problèmes majeurs de gestion (Maroc) |
title_sort |
le marais doux endigué de bourgneuf-machecoul (pays de loire) premier éléments de connaissance du peuplement piscicole. relation ichtyofaune-habitat et problèmes majeurs de gestion (maroc) |
publisher |
Université du Québec - INRS-Eau, Terre et Environnement (INRS-ETE) |
publishDate |
2005 |
url |
http://www.erudit.org/fr/revues/rseau/1992-v5-n4-rseau3268/705144ar.pdf https://www.erudit.org/fr/revues/rseau/1992-v5-n4-rseau3268/705144ar.pdf https://id.erudit.org/iderudit/705144ar https://doi.org/10.7202/705144ar https://www.erudit.org/fr/revues/rseau/1992-v5-n4-rseau3268/705144ar/ https://core.ac.uk/display/59609542 https://academic.microsoft.com/#/detail/2165598010 |
long_lat |
ENVELOPE(141.567,141.567,-66.774,-66.774) |
geographic |
le Marais |
geographic_facet |
le Marais |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
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Revue des sciences de l'eau |
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509 |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::f54360e74309a47d76c470d33d05535a 2023-05-15T13:28:23+02:00 Le marais doux endigué de Bourgneuf-Machecoul (Pays de Loire) Premier éléments de connaissance du peuplement piscicole. Relation ichtyofaune-habitat et problèmes majeurs de gestion (Maroc) The sweet marsh contained in Bourgneuf-Machecoul (Pays de Loire) is the first element of knowledge of the fish population. Ichtyofaune-habitat relationship and major management problems (Morocco) Eric Feunteun Jean-Claude Lefeuvre P. Elie C. Rigaud 2005-04-12 http://www.erudit.org/fr/revues/rseau/1992-v5-n4-rseau3268/705144ar.pdf https://www.erudit.org/fr/revues/rseau/1992-v5-n4-rseau3268/705144ar.pdf https://id.erudit.org/iderudit/705144ar https://doi.org/10.7202/705144ar https://www.erudit.org/fr/revues/rseau/1992-v5-n4-rseau3268/705144ar/ https://core.ac.uk/display/59609542 https://academic.microsoft.com/#/detail/2165598010 fr fre Université du Québec - INRS-Eau, Terre et Environnement (INRS-ETE) http://www.erudit.org/fr/revues/rseau/1992-v5-n4-rseau3268/705144ar.pdf https://www.erudit.org/fr/revues/rseau/1992-v5-n4-rseau3268/705144ar.pdf https://id.erudit.org/iderudit/705144ar http://dx.doi.org/10.7202/705144ar https://www.erudit.org/fr/revues/rseau/1992-v5-n4-rseau3268/705144ar/ https://core.ac.uk/display/59609542 https://academic.microsoft.com/#/detail/2165598010 undefined oai:erudit.org:705144ar 705144ar 10.7202/705144ar 2165598010 10|opendoar____::16e6a3326dd7d868cbc926602a61e4d0 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|issn___print::130cf49e979129942002da43f89d0654 10|openaire____::8ac8380272269217cb09a928c8caa993 10|openaire____::5f532a3fc4f1ea403f37070f59a7a53a Sciences Humaines et Sociales Social Sciences and Humanities Marais littoral endigué marais Breton-Vendéen peuplement piscicole Anguilla anguilla Ictalurus melas densités biomasses répartition spatio-temporelle habitat gestion hydraulique Breton-Vendéen marsh dyked marsh coastal wetland fish community density biomass spatio-temporal distribution water management envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2005 fttriple https://doi.org/10.7202/705144ar 2023-01-22T17:23:48Z The dammed up marshes of the French Atlantic coast cover about 200 000 ha between River Vilaine and the « Bassin d'Arcachon ». Eighty eight % are managed with freshwater. They constitute original environments initially created for agriculture or for salt production, and they are now threatened by land abandonment within the next decade. Concurrently to aquaculture (in created or existing ponds), exploitation of the fish stocks in the ditchweb is likely to encourage a diversification of agricultural activities. Unfortunately, bibliographic analysis reveals the relative scarceness of research about sampling methods and qualitative or quantitative characteristics of these fish communities. This is quite surprising considering the importance of the ditchwed of this kind of environment outlined by several authors. In the Netherlands, BELTMANN (1984) assessed that there is a total of 400 000 km of ditches. In France, the littoral dyked marshes of the Atlantic coast couid comprise 20 000 km of ditches and about 24 000 ha of open water. The present work provides for the first data on the fish community of Bourgneuf marsh.The northern part of the marsh of Bourgneuf, 2 700 ha provided whith f reshwater, contains nearly every kind of landscapes found throughout the whole Breton-Vendéen marsh. The pattern of the ditch network strongly changes from a zone to another (fig.1) : presence of former salt pans in the western part, regular geometric shapes in the recently created polders next to the River Falleron, irregular ditchweb pattern in the eastern part. The average density of the ditch network is 91 m of ditches per ha, totalizing 234 km in the study area. The total surface of open water, composed of ditches and basins (former salt pans), covers 411 ha (over 15 % of the study site). Diversity of ditch types occurs at fine scales (<1 000 m2), they vary according to their widths (0,3 to 7 m), depths (average, 42 cm; SD, 20,4), thickness of silt layer (average, 43 cm; SD, 42) and their hydrophyte vegetation cover (average, ... Article in Journal/Newspaper Anguilla anguilla Unknown le Marais ENVELOPE(141.567,141.567,-66.774,-66.774) Revue des sciences de l'eau 5 4 509 528 |