Recovery in eastern Baltic cod: is increased recruitment caused by decreased predation on early life stages?
Cod (Gadus morhua) recruitment in the eastern Baltic Sea is influenced by predation on early life stages by sprat (Sprattus sprattus) and herring (Clupea harengus), which is considered as one of the mechanisms preventing cod recovery in the 1990s. In the light of improved cod recruitment in the seco...
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Oxford University Press (OUP)
2014
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsu112 http://academic.oup.com/icesjms/article-pdf/71/6/1382/29147463/fsu112.pdf |
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croxfordunivpr:10.1093/icesjms/fsu112 2023-05-15T16:19:08+02:00 Recovery in eastern Baltic cod: is increased recruitment caused by decreased predation on early life stages? Neumann, Viola Köster, Friedrich W. Schaber, Matthias Eero, Margit 2014 http://dx.doi.org/10.1093/icesjms/fsu112 http://academic.oup.com/icesjms/article-pdf/71/6/1382/29147463/fsu112.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 71, issue 6, page 1382-1392 ISSN 1054-3139 1095-9289 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2014 croxfordunivpr https://doi.org/10.1093/icesjms/fsu112 2022-04-15T06:25:28Z Cod (Gadus morhua) recruitment in the eastern Baltic Sea is influenced by predation on early life stages by sprat (Sprattus sprattus) and herring (Clupea harengus), which is considered as one of the mechanisms preventing cod recovery in the 1990s. In the light of improved cod recruitment in the second half of the 2000s, new analyses of stomach content of sprat and herring were conducted, to elucidate the contribution of changes in predation pressure on cod recruitment. Comparison of stomach contents of sprat and herring in 2004–2008 with data from the 1990s showed a similar diet composition in the two periods; however, changes were found in the ichthyoplankton abundance and composition in the diet, indicating reduced predation pressure on cod eggs in the most recent period. The abundance of cod eggs in the field, availability of other prey, and horizontal and vertical overlap between predator and prey were investigated as potential factors influencing cod egg predation. Article in Journal/Newspaper Gadus morhua Oxford University Press (via Crossref) ICES Journal of Marine Science 71 6 1382 1392 |
institution |
Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Neumann, Viola Köster, Friedrich W. Schaber, Matthias Eero, Margit Recovery in eastern Baltic cod: is increased recruitment caused by decreased predation on early life stages? |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Cod (Gadus morhua) recruitment in the eastern Baltic Sea is influenced by predation on early life stages by sprat (Sprattus sprattus) and herring (Clupea harengus), which is considered as one of the mechanisms preventing cod recovery in the 1990s. In the light of improved cod recruitment in the second half of the 2000s, new analyses of stomach content of sprat and herring were conducted, to elucidate the contribution of changes in predation pressure on cod recruitment. Comparison of stomach contents of sprat and herring in 2004–2008 with data from the 1990s showed a similar diet composition in the two periods; however, changes were found in the ichthyoplankton abundance and composition in the diet, indicating reduced predation pressure on cod eggs in the most recent period. The abundance of cod eggs in the field, availability of other prey, and horizontal and vertical overlap between predator and prey were investigated as potential factors influencing cod egg predation. |
format |
Article in Journal/Newspaper |
author |
Neumann, Viola Köster, Friedrich W. Schaber, Matthias Eero, Margit |
author_facet |
Neumann, Viola Köster, Friedrich W. Schaber, Matthias Eero, Margit |
author_sort |
Neumann, Viola |
title |
Recovery in eastern Baltic cod: is increased recruitment caused by decreased predation on early life stages? |
title_short |
Recovery in eastern Baltic cod: is increased recruitment caused by decreased predation on early life stages? |
title_full |
Recovery in eastern Baltic cod: is increased recruitment caused by decreased predation on early life stages? |
title_fullStr |
Recovery in eastern Baltic cod: is increased recruitment caused by decreased predation on early life stages? |
title_full_unstemmed |
Recovery in eastern Baltic cod: is increased recruitment caused by decreased predation on early life stages? |
title_sort |
recovery in eastern baltic cod: is increased recruitment caused by decreased predation on early life stages? |
publisher |
Oxford University Press (OUP) |
publishDate |
2014 |
url |
http://dx.doi.org/10.1093/icesjms/fsu112 http://academic.oup.com/icesjms/article-pdf/71/6/1382/29147463/fsu112.pdf |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
ICES Journal of Marine Science volume 71, issue 6, page 1382-1392 ISSN 1054-3139 1095-9289 |
op_doi |
https://doi.org/10.1093/icesjms/fsu112 |
container_title |
ICES Journal of Marine Science |
container_volume |
71 |
container_issue |
6 |
container_start_page |
1382 |
op_container_end_page |
1392 |
_version_ |
1766005465688309760 |