Oceanic and local environmental conditions as forcing mechanisms of the glass eel recruitment to the southernmost European estuary
The main oceanic and local environmental traits forcing the glass eel Anguilla anguilla (L., 1758) recruitment to the southernmost European estuary, the Guadalquivir (SW Spain), were studied during nine successive migration seasons (June 1997–December 2006) using a fishery-independent experimental s...
Published in: | Estuarine, Coastal and Shelf Science |
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Online Access: | http://hdl.handle.net/10261/55474 https://doi.org/10.1016/j.ecss.2012.04.024 |
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ftcsic:oai:digital.csic.es:10261/55474 2024-02-11T09:55:28+01:00 Oceanic and local environmental conditions as forcing mechanisms of the glass eel recruitment to the southernmost European estuary Arribas, Carmen Fernández-Delgado, Carlos Oliva-Paterna, Francisco J. Drake, Pilar 2012-07-10 http://hdl.handle.net/10261/55474 https://doi.org/10.1016/j.ecss.2012.04.024 en eng Elsevier http://dx.doi.org/10.1016/j.ecss.2012.04.024 Estuarine Coastal and Shelf Science 107: 46-57 (2012) 0272-7714 http://hdl.handle.net/10261/55474 doi:10.1016/j.ecss.2012.04.024 open Glass eels Anguilla anguilla Recruitment Environmental factors Guadalquivir estuary artículo http://purl.org/coar/resource_type/c_6501 2012 ftcsic https://doi.org/10.1016/j.ecss.2012.04.024 2024-01-16T09:40:23Z The main oceanic and local environmental traits forcing the glass eel Anguilla anguilla (L., 1758) recruitment to the southernmost European estuary, the Guadalquivir (SW Spain), were studied during nine successive migration seasons (June 1997–December 2006) using a fishery-independent experimental survey at three sampling sites in the estuary. A clear seasonal pattern was observed: density was highest between late autumn and spring with two migration peaks, and lowest during summer. Short-term (inter-month) changes in glass eel density were partially driven by local environmental variables, such as estuarine turbidity, local rainfall and water temperature. Long-term (inter-annual) changes were positively correlated with oceanic factors related to recruitment success (NAO index and primary production at the spawning area) as well as local environmental factors (westerly and southerly wind mixing indices and rainfall). Spatial changes in glass eel density within the estuary depended on tidal and light situations although maximum densities were mainly observed at diurnal and/or nocturnal flood tides. Although the decrease in the abundance of European glass eels has been widely known since the 1980s, during this study there was no evidence of a declining trend, probably because of an insufficiently long time series. This study was financially supported by FEADER (European funds agriculture of regional development) through project n° 2006000605. Peer reviewed Article in Journal/Newspaper Anguilla anguilla Digital.CSIC (Spanish National Research Council) Estuarine, Coastal and Shelf Science 107 46 57 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Glass eels Anguilla anguilla Recruitment Environmental factors Guadalquivir estuary |
spellingShingle |
Glass eels Anguilla anguilla Recruitment Environmental factors Guadalquivir estuary Arribas, Carmen Fernández-Delgado, Carlos Oliva-Paterna, Francisco J. Drake, Pilar Oceanic and local environmental conditions as forcing mechanisms of the glass eel recruitment to the southernmost European estuary |
topic_facet |
Glass eels Anguilla anguilla Recruitment Environmental factors Guadalquivir estuary |
description |
The main oceanic and local environmental traits forcing the glass eel Anguilla anguilla (L., 1758) recruitment to the southernmost European estuary, the Guadalquivir (SW Spain), were studied during nine successive migration seasons (June 1997–December 2006) using a fishery-independent experimental survey at three sampling sites in the estuary. A clear seasonal pattern was observed: density was highest between late autumn and spring with two migration peaks, and lowest during summer. Short-term (inter-month) changes in glass eel density were partially driven by local environmental variables, such as estuarine turbidity, local rainfall and water temperature. Long-term (inter-annual) changes were positively correlated with oceanic factors related to recruitment success (NAO index and primary production at the spawning area) as well as local environmental factors (westerly and southerly wind mixing indices and rainfall). Spatial changes in glass eel density within the estuary depended on tidal and light situations although maximum densities were mainly observed at diurnal and/or nocturnal flood tides. Although the decrease in the abundance of European glass eels has been widely known since the 1980s, during this study there was no evidence of a declining trend, probably because of an insufficiently long time series. This study was financially supported by FEADER (European funds agriculture of regional development) through project n° 2006000605. Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Arribas, Carmen Fernández-Delgado, Carlos Oliva-Paterna, Francisco J. Drake, Pilar |
author_facet |
Arribas, Carmen Fernández-Delgado, Carlos Oliva-Paterna, Francisco J. Drake, Pilar |
author_sort |
Arribas, Carmen |
title |
Oceanic and local environmental conditions as forcing mechanisms of the glass eel recruitment to the southernmost European estuary |
title_short |
Oceanic and local environmental conditions as forcing mechanisms of the glass eel recruitment to the southernmost European estuary |
title_full |
Oceanic and local environmental conditions as forcing mechanisms of the glass eel recruitment to the southernmost European estuary |
title_fullStr |
Oceanic and local environmental conditions as forcing mechanisms of the glass eel recruitment to the southernmost European estuary |
title_full_unstemmed |
Oceanic and local environmental conditions as forcing mechanisms of the glass eel recruitment to the southernmost European estuary |
title_sort |
oceanic and local environmental conditions as forcing mechanisms of the glass eel recruitment to the southernmost european estuary |
publisher |
Elsevier |
publishDate |
2012 |
url |
http://hdl.handle.net/10261/55474 https://doi.org/10.1016/j.ecss.2012.04.024 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_relation |
http://dx.doi.org/10.1016/j.ecss.2012.04.024 Estuarine Coastal and Shelf Science 107: 46-57 (2012) 0272-7714 http://hdl.handle.net/10261/55474 doi:10.1016/j.ecss.2012.04.024 |
op_rights |
open |
op_doi |
https://doi.org/10.1016/j.ecss.2012.04.024 |
container_title |
Estuarine, Coastal and Shelf Science |
container_volume |
107 |
container_start_page |
46 |
op_container_end_page |
57 |
_version_ |
1790596515537879040 |