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7- Biological Heritage And Food Chains (The Seine-Aval Scientific Programme
idioma: francês
Editor:
QUAE, maio de 2010 ‧
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5,19€
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IMEDIATO
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SINOPSE
L'estuaire de la Seine a été fortement aménagé : réduction de la zone intertidale à moins de 30 km2, chenalisation du fleuve de Poses à la mer, forte compartimentalisation de l'édifice biologique qui est diversifié en habitats mais pauvre en espèces. Des contrastes sont observés entre des zones où la faune est très abondante (vasière intertidale nord ; plancton de la partie salée de l'estuaire) et des zones presque azoïque (benthos de l'estuaire fluvial). Il existe des paradoxes d'une part, entre l'extrême abondance des premiers maillons de la chaîne trophique et le fait que ceux-ci soient soumis à des apports en contaminants et, d'autre part, entre l'abondance des proies disponibles et la pauvreté de l'ichtyofaune. La gestion globale de l'estuaire impose des mesures permettant le maintien de la fonctionnalité actuelle de cet estuaire d'intérêt européen pour les oiseaux et assurant la restauration des grands poissons migrateurs.
Introduction Chapter I - The forces, constraints and historical evolution of the estuarine environment Forces and constraints Low biodiversity, high densities and high productivity Evolution of the environment and the consequences on its populations Evolution of the estuarine fisheries Migratory fish in the Seine estuary from the Middle Ages to the 20th century Chapter II - The biological heritage of the estuarine ecosystem The influence of salinity in estuarine waters Characteristics of the pelagic compartment Characteristics of the suprabenthic compartment Characteristics of the benthic compartment Quantitative characteristics Temporal changes The fluvial estuary Characteristics of the pelagic compartment Characteristics of the benthic compartment Riparian zone The channel A comparison with other European rivers The ecological quality of the Seine, according to the macrozoobenthos Chapter III - Food chains The trophic network of the marine region of the estuary The macrobenthos of the Seine's riverine region: what kind of trophic network? The importance of the eastern Bay of Seine and the estuary as a fish nursery area: The particular role of the intertidal zone The Seine's value and function as a fisheries resource Dietary requirements of the communities and their trophic relationships The importance of the intertidal zones for the avifauna of the Seine estuary Chapter IV - The Seine estuary today: compartmentalization of the biological structure, threats and probable evolution of the estuary The compartmentalization of the estuarine ecosystem The wetlands: a difficult-to-manage compartment The expected effects of a major development project. . on the rehabilitation of the different habitats Conclusion and perspectives References Glossary
Introduction Chapter I - The forces, constraints and historical evolution of the estuarine environment Forces and constraints Low biodiversity, high densities and high productivity Evolution of the environment and the consequences on its populations Evolution of the estuarine fisheries Migratory fish in the Seine estuary from the Middle Ages to the 20th century Chapter II - The biological heritage of the estuarine ecosystem The influence of salinity in estuarine waters Characteristics of the pelagic compartment Characteristics of the suprabenthic compartment Characteristics of the benthic compartment Quantitative characteristics Temporal changes The fluvial estuary Characteristics of the pelagic compartment Characteristics of the benthic compartment Riparian zone The channel A comparison with other European rivers The ecological quality of the Seine, according to the macrozoobenthos Chapter III - Food chains The trophic network of the marine region of the estuary The macrobenthos of the Seine's riverine region: what kind of trophic network? The importance of the eastern Bay of Seine and the estuary as a fish nursery area: The particular role of the intertidal zone The Seine's value and function as a fisheries resource Dietary requirements of the communities and their trophic relationships The importance of the intertidal zones for the avifauna of the Seine estuary Chapter IV - The Seine estuary today: compartmentalization of the biological structure, threats and probable evolution of the estuary The compartmentalization of the estuarine ecosystem The wetlands: a difficult-to-manage compartment The expected effects of a major development project. . on the rehabilitation of the different habitats Conclusion and perspectives References Glossary
DETALHES
| Propriedade | Descrição |
|---|---|
| ISBN: | 9782759200108 |
| Editor: | QUAE |
| Data de Lançamento: | maio de 2010 |
| Idioma: | Francês |
| Tipo de produto: | Livro |
| Coleção: | Savoir-Faire |
| Classificação Temática: |
Livros em Francês
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Ciências Exatas e Nat.
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| EAN: | 9782759200108 |
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