Modelling the current distribution of European diadromous fishes: an approach integrating regional anthropogenic pressures
Summary 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 Greenl...
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crwiley:10.1111/j.1365-2427.2008.02135.x 2024-06-23T07:53:25+00:00 Modelling the current distribution of European diadromous fishes: an approach integrating regional anthropogenic pressures LASSALLE, GÉRALDINE CROUZET, PHILIPPE ROCHARD, ERIC 2009 http://dx.doi.org/10.1111/j.1365-2427.2008.02135.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2427.2008.02135.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2427.2008.02135.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Freshwater Biology volume 54, issue 3, page 587-606 ISSN 0046-5070 1365-2427 journal-article 2009 crwiley https://doi.org/10.1111/j.1365-2427.2008.02135.x 2024-06-11T04:51:07Z Summary 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 ... Article in Journal/Newspaper Greenland Northern Norway Wiley Online Library Greenland Norway Freshwater Biology 54 3 587 606 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Summary 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 ... |
format |
Article in Journal/Newspaper |
author |
LASSALLE, GÉRALDINE CROUZET, PHILIPPE ROCHARD, ERIC |
spellingShingle |
LASSALLE, GÉRALDINE CROUZET, PHILIPPE ROCHARD, ERIC Modelling the current distribution of European diadromous fishes: an approach integrating regional anthropogenic pressures |
author_facet |
LASSALLE, GÉRALDINE CROUZET, PHILIPPE ROCHARD, ERIC |
author_sort |
LASSALLE, GÉRALDINE |
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 |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1111/j.1365-2427.2008.02135.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2427.2008.02135.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2427.2008.02135.x |
geographic |
Greenland Norway |
geographic_facet |
Greenland Norway |
genre |
Greenland Northern Norway |
genre_facet |
Greenland Northern Norway |
op_source |
Freshwater Biology volume 54, issue 3, page 587-606 ISSN 0046-5070 1365-2427 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2427.2008.02135.x |
container_title |
Freshwater Biology |
container_volume |
54 |
container_issue |
3 |
container_start_page |
587 |
op_container_end_page |
606 |
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1802645022756044800 |