Modelling the current distribution of European diadromous fishes: an approach integrating regional anthropogenic pressures
1. Twenty-eight diadromous fish species occurred in Europe, North Africa and the Middle East in historical times. Their current distributions were assessed in terms of abundance classes (missing, rare, common and abundant) in 196 basins ranging from Morocco to northern Norway and from Greenland to I...
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ftcemoa:oai:irsteadoc.irstea.fr:PUB00025936 2023-05-15T16:30:37+02:00 Modelling the current distribution of European diadromous fishes: an approach integrating regional anthropogenic pressures Lassalle, G. Crouzet, P. Rochard, E. CEMAGREF BORDEAUX UR EPBX FRA EUROPEAN ENVIRONMENT AGENCY DNK 2009 application/pdf https://irsteadoc.irstea.fr/cemoa/PUB00025936 Anglais eng https://irsteadoc.irstea.fr/cemoa/PUB00025936 Date de dépôt: 2009-02-04 - Tous les documents et informations contenus dans la base CemOA Publications sont protégés en vertu du droit de propriété intellectuelle, en particulier par le droit d'auteur. La personne consultant la base CemOA Publications peut visualiser, reproduire, ou stocker des copies des publications, à condition que l'information soit seulement pour son usage personnel et non commercial. L'utilisation des travaux universitaires est soumise à autorisation préalable de leurs auteurs. Toute information relative au signalement d'une publication contenue dans CemOA Publications doit inclure la citation bibliographique usuelle : Nom du ou des auteurs, titre et source du document, date et URL de la notice (dc_identifier). 21577 BARRAGE MODELISATION REPARTITION GEOGRAPHIQUE DENSITE DE POPULATION POISSON ABONDANCE D'ESPECE OBSTACLE A LA MIGRATION ABUNDANCE DAMS DIADROMOUS FISHES DISTRIBUTION MODELLING HUMAN POPULATION DENSITY MODELLING GEOGRAPHICAL DISTRIBUTION FISH POPULATION DENSITY SPECIES ABUNDANCE Article de revue scientifique à comité de lecture 2009 ftcemoa 2021-06-29T09:14:48Z 1. Twenty-eight diadromous fish species occurred in Europe, North Africa and the Middle East in historical times. Their current distributions were assessed in terms of abundance classes (missing, rare, common and abundant) in 196 basins ranging from Morocco to northern Norway and from Greenland to Iran. 2. Their current distributions were modelled using abiotic, biotic, climatic and anthropogenic (regional anthropogenic pressures) variables. Anthropogenic variables were derived from characteristics of large dams (height, distance from the outlet, percentage of main stem river available downstream of dam) and human population density. These data were taken from the EEA Eldred 2.08 (European Lakes, Dams and Reservoirs Database) that deals comprehensively with large European dams and includes all obstacles of this type. To deal with ordinal response variables, we applied proportional odds models. 3. Twenty-two species-specific models were successfully built according to the reduction of deviance and the validation process, of which eight included one or more anthropogenic variables. No model could be established for six endemic or highly endangered species such as Acipenser sturio and Coregonus oxyrinchus. 4. Most response curves were easily interpretable since they were related to specific aspects of species' ecology. Anthropogenic variables related to large dams impacted negatively on the distribution of diadromous fishes through the perturbation of river discharge patterns, the loss of river connectivity and the accessibility to essential habitats, particularly for Salmonid species that spawn in headwater streams. However, one species which can complete its life cycle using only the most downstream part of the basin, Liza ramada, was found to be favoured by the changes in hydrological regime. The bell-shaped curves obtained from human population density for three diadromous species were connected on one side to a common settlement history of human and animal populations and on the other side to negative impacts of human activities arising at high population density. 5. Our approach can provide the basis for identifying special areas of conservation prior to planning restoration programmes at country or basin scales, as well as for more specialized studies focusing on one species only or at the local scale. Article in Journal/Newspaper Greenland Northern Norway Irstea Publications et Bases documentaires (Irstea@doc/CemOA) Greenland Norway |
institution |
Open Polar |
collection |
Irstea Publications et Bases documentaires (Irstea@doc/CemOA) |
op_collection_id |
ftcemoa |
language |
English |
topic |
BARRAGE MODELISATION REPARTITION GEOGRAPHIQUE DENSITE DE POPULATION POISSON ABONDANCE D'ESPECE OBSTACLE A LA MIGRATION ABUNDANCE DAMS DIADROMOUS FISHES DISTRIBUTION MODELLING HUMAN POPULATION DENSITY MODELLING GEOGRAPHICAL DISTRIBUTION FISH POPULATION DENSITY SPECIES ABUNDANCE |
spellingShingle |
BARRAGE MODELISATION REPARTITION GEOGRAPHIQUE DENSITE DE POPULATION POISSON ABONDANCE D'ESPECE OBSTACLE A LA MIGRATION ABUNDANCE DAMS DIADROMOUS FISHES DISTRIBUTION MODELLING HUMAN POPULATION DENSITY MODELLING GEOGRAPHICAL DISTRIBUTION FISH POPULATION DENSITY SPECIES ABUNDANCE Lassalle, G. Crouzet, P. Rochard, E. Modelling the current distribution of European diadromous fishes: an approach integrating regional anthropogenic pressures |
topic_facet |
BARRAGE MODELISATION REPARTITION GEOGRAPHIQUE DENSITE DE POPULATION POISSON ABONDANCE D'ESPECE OBSTACLE A LA MIGRATION ABUNDANCE DAMS DIADROMOUS FISHES DISTRIBUTION MODELLING HUMAN POPULATION DENSITY MODELLING GEOGRAPHICAL DISTRIBUTION FISH POPULATION DENSITY SPECIES ABUNDANCE |
description |
1. Twenty-eight diadromous fish species occurred in Europe, North Africa and the Middle East in historical times. Their current distributions were assessed in terms of abundance classes (missing, rare, common and abundant) in 196 basins ranging from Morocco to northern Norway and from Greenland to Iran. 2. Their current distributions were modelled using abiotic, biotic, climatic and anthropogenic (regional anthropogenic pressures) variables. Anthropogenic variables were derived from characteristics of large dams (height, distance from the outlet, percentage of main stem river available downstream of dam) and human population density. These data were taken from the EEA Eldred 2.08 (European Lakes, Dams and Reservoirs Database) that deals comprehensively with large European dams and includes all obstacles of this type. To deal with ordinal response variables, we applied proportional odds models. 3. Twenty-two species-specific models were successfully built according to the reduction of deviance and the validation process, of which eight included one or more anthropogenic variables. No model could be established for six endemic or highly endangered species such as Acipenser sturio and Coregonus oxyrinchus. 4. Most response curves were easily interpretable since they were related to specific aspects of species' ecology. Anthropogenic variables related to large dams impacted negatively on the distribution of diadromous fishes through the perturbation of river discharge patterns, the loss of river connectivity and the accessibility to essential habitats, particularly for Salmonid species that spawn in headwater streams. However, one species which can complete its life cycle using only the most downstream part of the basin, Liza ramada, was found to be favoured by the changes in hydrological regime. The bell-shaped curves obtained from human population density for three diadromous species were connected on one side to a common settlement history of human and animal populations and on the other side to negative impacts of human activities arising at high population density. 5. Our approach can provide the basis for identifying special areas of conservation prior to planning restoration programmes at country or basin scales, as well as for more specialized studies focusing on one species only or at the local scale. |
author2 |
CEMAGREF BORDEAUX UR EPBX FRA EUROPEAN ENVIRONMENT AGENCY DNK |
format |
Article in Journal/Newspaper |
author |
Lassalle, G. Crouzet, P. Rochard, E. |
author_facet |
Lassalle, G. Crouzet, P. Rochard, E. |
author_sort |
Lassalle, G. |
title |
Modelling the current distribution of European diadromous fishes: an approach integrating regional anthropogenic pressures |
title_short |
Modelling the current distribution of European diadromous fishes: an approach integrating regional anthropogenic pressures |
title_full |
Modelling the current distribution of European diadromous fishes: an approach integrating regional anthropogenic pressures |
title_fullStr |
Modelling the current distribution of European diadromous fishes: an approach integrating regional anthropogenic pressures |
title_full_unstemmed |
Modelling the current distribution of European diadromous fishes: an approach integrating regional anthropogenic pressures |
title_sort |
modelling the current distribution of european diadromous fishes: an approach integrating regional anthropogenic pressures |
publishDate |
2009 |
url |
https://irsteadoc.irstea.fr/cemoa/PUB00025936 |
geographic |
Greenland Norway |
geographic_facet |
Greenland Norway |
genre |
Greenland Northern Norway |
genre_facet |
Greenland Northern Norway |
op_source |
21577 |
op_relation |
https://irsteadoc.irstea.fr/cemoa/PUB00025936 |
op_rights |
Date de dépôt: 2009-02-04 - Tous les documents et informations contenus dans la base CemOA Publications sont protégés en vertu du droit de propriété intellectuelle, en particulier par le droit d'auteur. La personne consultant la base CemOA Publications peut visualiser, reproduire, ou stocker des copies des publications, à condition que l'information soit seulement pour son usage personnel et non commercial. L'utilisation des travaux universitaires est soumise à autorisation préalable de leurs auteurs. Toute information relative au signalement d'une publication contenue dans CemOA Publications doit inclure la citation bibliographique usuelle : Nom du ou des auteurs, titre et source du document, date et URL de la notice (dc_identifier). |
_version_ |
1766020348310978560 |