Modelling potential spawning habitat of sardine ( Sardina pilchardus) and anchovy ( Engraulis encrasicolus) in the Bay of Biscay
Abstract Large amplitude variations in recruitment of small pelagic fish result from interactions between a fluctuating environment and population dynamics processes such as spawning. The spatial extent and location of spawning, which is critical to the fate of eggs and larvae, can vary strongly fro...
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crwiley:10.1111/j.1365-2419.2006.00411.x 2024-09-15T18:24:45+00:00 Modelling potential spawning habitat of sardine ( Sardina pilchardus) and anchovy ( Engraulis encrasicolus) in the Bay of Biscay PLANQUE, BENJAMIN BELLIER, EDWIGE LAZURE, PASCAL 2006 http://dx.doi.org/10.1111/j.1365-2419.2006.00411.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2419.2006.00411.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2419.2006.00411.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Fisheries Oceanography volume 16, issue 1, page 16-30 ISSN 1054-6006 1365-2419 journal-article 2006 crwiley https://doi.org/10.1111/j.1365-2419.2006.00411.x 2024-08-01T04:19:22Z Abstract Large amplitude variations in recruitment of small pelagic fish result from interactions between a fluctuating environment and population dynamics processes such as spawning. The spatial extent and location of spawning, which is critical to the fate of eggs and larvae, can vary strongly from year to year, as a result of changing population structure and environmental conditions. Spawning habitat can be divided into ‘potential spawning habitat’, defined as habitat where the hydrographic conditions are suitable for spawning, ‘realized spawning habitat’, defined as habitat where spawning actually occurs, and ‘successful spawning habitat’, defined as habitat from where successful recruitment has resulted. Using biological data collected during the period 2000–2004, as well as hydrographic data, we investigate the role of environmental parameters in controlling the potential spawning habitat of anchovy and sardine in the Bay of Biscay. Anchovy potential spawning habitat appears to be primarily related to bottom temperature followed by surface temperature and mixed‐layer depth, whilst surface and bottom salinity appear to play a lesser role. The possible influence of hydrographic factors on the spawning habitat of sardine seems less clear than for anchovy. Modelled relationships between anchovy and sardine spawning are used to predict potential spawning habitat from hydrodynamical simulations. The results show that the seasonal patterns in spawning are well reproduced by the model, indicating that hydrographic changes may explain a large fraction of spawning spatial dynamics. Such models may prove useful in the context of forecasting potential impacts of future environmental changes on sardine and anchovy reproductive strategy in the north‐east Atlantic. Article in Journal/Newspaper North East Atlantic Wiley Online Library Fisheries Oceanography 16 1 16 30 |
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English |
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Abstract Large amplitude variations in recruitment of small pelagic fish result from interactions between a fluctuating environment and population dynamics processes such as spawning. The spatial extent and location of spawning, which is critical to the fate of eggs and larvae, can vary strongly from year to year, as a result of changing population structure and environmental conditions. Spawning habitat can be divided into ‘potential spawning habitat’, defined as habitat where the hydrographic conditions are suitable for spawning, ‘realized spawning habitat’, defined as habitat where spawning actually occurs, and ‘successful spawning habitat’, defined as habitat from where successful recruitment has resulted. Using biological data collected during the period 2000–2004, as well as hydrographic data, we investigate the role of environmental parameters in controlling the potential spawning habitat of anchovy and sardine in the Bay of Biscay. Anchovy potential spawning habitat appears to be primarily related to bottom temperature followed by surface temperature and mixed‐layer depth, whilst surface and bottom salinity appear to play a lesser role. The possible influence of hydrographic factors on the spawning habitat of sardine seems less clear than for anchovy. Modelled relationships between anchovy and sardine spawning are used to predict potential spawning habitat from hydrodynamical simulations. The results show that the seasonal patterns in spawning are well reproduced by the model, indicating that hydrographic changes may explain a large fraction of spawning spatial dynamics. Such models may prove useful in the context of forecasting potential impacts of future environmental changes on sardine and anchovy reproductive strategy in the north‐east Atlantic. |
format |
Article in Journal/Newspaper |
author |
PLANQUE, BENJAMIN BELLIER, EDWIGE LAZURE, PASCAL |
spellingShingle |
PLANQUE, BENJAMIN BELLIER, EDWIGE LAZURE, PASCAL Modelling potential spawning habitat of sardine ( Sardina pilchardus) and anchovy ( Engraulis encrasicolus) in the Bay of Biscay |
author_facet |
PLANQUE, BENJAMIN BELLIER, EDWIGE LAZURE, PASCAL |
author_sort |
PLANQUE, BENJAMIN |
title |
Modelling potential spawning habitat of sardine ( Sardina pilchardus) and anchovy ( Engraulis encrasicolus) in the Bay of Biscay |
title_short |
Modelling potential spawning habitat of sardine ( Sardina pilchardus) and anchovy ( Engraulis encrasicolus) in the Bay of Biscay |
title_full |
Modelling potential spawning habitat of sardine ( Sardina pilchardus) and anchovy ( Engraulis encrasicolus) in the Bay of Biscay |
title_fullStr |
Modelling potential spawning habitat of sardine ( Sardina pilchardus) and anchovy ( Engraulis encrasicolus) in the Bay of Biscay |
title_full_unstemmed |
Modelling potential spawning habitat of sardine ( Sardina pilchardus) and anchovy ( Engraulis encrasicolus) in the Bay of Biscay |
title_sort |
modelling potential spawning habitat of sardine ( sardina pilchardus) and anchovy ( engraulis encrasicolus) in the bay of biscay |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1111/j.1365-2419.2006.00411.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2419.2006.00411.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2419.2006.00411.x |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
Fisheries Oceanography volume 16, issue 1, page 16-30 ISSN 1054-6006 1365-2419 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2419.2006.00411.x |
container_title |
Fisheries Oceanography |
container_volume |
16 |
container_issue |
1 |
container_start_page |
16 |
op_container_end_page |
30 |
_version_ |
1810465164761235456 |