Hydrographic influence on the spawning habitat suitability of western Baltic cod (Gadus morhua)
Abstract Hüssy, K., Hinrichsen, H.-H., and Huwer, B. 2012. Hydrographic influence on the spawning habitat suitability of western Baltic cod (Gadus morhua) – ICES Journal of Marine Science, 69: 1736–1743. Recruitment variability of marine fish is influenced by the reproductive potential of the stock...
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Language: | English |
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Oxford University Press (OUP)
2012
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Online Access: | http://dx.doi.org/10.1093/icesjms/fss136 http://academic.oup.com/icesjms/article-pdf/69/10/1736/29149586/fss136.pdf |
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croxfordunivpr:10.1093/icesjms/fss136 2024-10-06T13:48:48+00:00 Hydrographic influence on the spawning habitat suitability of western Baltic cod (Gadus morhua) Hüssy, K. Hinrichsen, H.-H. Huwer, B. 2012 http://dx.doi.org/10.1093/icesjms/fss136 http://academic.oup.com/icesjms/article-pdf/69/10/1736/29149586/fss136.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 69, issue 10, page 1736-1743 ISSN 1095-9289 1054-3139 journal-article 2012 croxfordunivpr https://doi.org/10.1093/icesjms/fss136 2024-09-10T04:13:22Z Abstract Hüssy, K., Hinrichsen, H.-H., and Huwer, B. 2012. Hydrographic influence on the spawning habitat suitability of western Baltic cod (Gadus morhua) – ICES Journal of Marine Science, 69: 1736–1743. Recruitment variability of marine fish is influenced by the reproductive potential of the stock (i.e. stock characteristics and abundance) and the survival of early life stages, mediated by environmental conditions of both a physical (water temperature, salinity and oxygen conditions, ocean currents) and a biological nature (i.e. food, predators). The objective of this study is to assess the importance of variability in environmental conditions within different western Baltic cod spawning grounds for egg survival. Habitat identification was based on environmental threshold levels for egg survival and development and ambient hydrographical conditions at different times during the spawning season. The long-term resolution of environmental conditions allowing survival of western Baltic cod eggs indicates that favourable conditions predominantly occurred during the late spawning season in April/May, while minimum survival rates could be expected from January to March. Unsuitable time periods and habitats exhibiting the highest mortality rates are exclusively characterized by ambient water temperatures below the critical survival threshold. Despite the strong influence of water temperature on habitat suitability, the impact of habitat suitability on recruitment was not clearly defined, suggesting that other mechanisms regulate year class strength. Article in Journal/Newspaper Gadus morhua Oxford University Press ICES Journal of Marine Science 69 10 1736 1743 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract Hüssy, K., Hinrichsen, H.-H., and Huwer, B. 2012. Hydrographic influence on the spawning habitat suitability of western Baltic cod (Gadus morhua) – ICES Journal of Marine Science, 69: 1736–1743. Recruitment variability of marine fish is influenced by the reproductive potential of the stock (i.e. stock characteristics and abundance) and the survival of early life stages, mediated by environmental conditions of both a physical (water temperature, salinity and oxygen conditions, ocean currents) and a biological nature (i.e. food, predators). The objective of this study is to assess the importance of variability in environmental conditions within different western Baltic cod spawning grounds for egg survival. Habitat identification was based on environmental threshold levels for egg survival and development and ambient hydrographical conditions at different times during the spawning season. The long-term resolution of environmental conditions allowing survival of western Baltic cod eggs indicates that favourable conditions predominantly occurred during the late spawning season in April/May, while minimum survival rates could be expected from January to March. Unsuitable time periods and habitats exhibiting the highest mortality rates are exclusively characterized by ambient water temperatures below the critical survival threshold. Despite the strong influence of water temperature on habitat suitability, the impact of habitat suitability on recruitment was not clearly defined, suggesting that other mechanisms regulate year class strength. |
format |
Article in Journal/Newspaper |
author |
Hüssy, K. Hinrichsen, H.-H. Huwer, B. |
spellingShingle |
Hüssy, K. Hinrichsen, H.-H. Huwer, B. Hydrographic influence on the spawning habitat suitability of western Baltic cod (Gadus morhua) |
author_facet |
Hüssy, K. Hinrichsen, H.-H. Huwer, B. |
author_sort |
Hüssy, K. |
title |
Hydrographic influence on the spawning habitat suitability of western Baltic cod (Gadus morhua) |
title_short |
Hydrographic influence on the spawning habitat suitability of western Baltic cod (Gadus morhua) |
title_full |
Hydrographic influence on the spawning habitat suitability of western Baltic cod (Gadus morhua) |
title_fullStr |
Hydrographic influence on the spawning habitat suitability of western Baltic cod (Gadus morhua) |
title_full_unstemmed |
Hydrographic influence on the spawning habitat suitability of western Baltic cod (Gadus morhua) |
title_sort |
hydrographic influence on the spawning habitat suitability of western baltic cod (gadus morhua) |
publisher |
Oxford University Press (OUP) |
publishDate |
2012 |
url |
http://dx.doi.org/10.1093/icesjms/fss136 http://academic.oup.com/icesjms/article-pdf/69/10/1736/29149586/fss136.pdf |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
ICES Journal of Marine Science volume 69, issue 10, page 1736-1743 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fss136 |
container_title |
ICES Journal of Marine Science |
container_volume |
69 |
container_issue |
10 |
container_start_page |
1736 |
op_container_end_page |
1743 |
_version_ |
1812176889705398272 |