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...
Published in: | ICES Journal of Marine Science |
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Language: | English |
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Online Access: | https://orbit.dtu.dk/en/publications/66fb9443-539f-4a65-bda7-7bda809f17f8 https://doi.org/10.1093/icesjms/fsu112 |
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ftdtupubl:oai:pure.atira.dk:publications/66fb9443-539f-4a65-bda7-7bda809f17f8 2024-09-15T18:07:18+00:00 Recovery in eastern Baltic cod: is increased recruitment caused by decreased predation on early life stages? Neumann, Viola Köster, Fritz Schaber, M. Eero, Margit 2014 https://orbit.dtu.dk/en/publications/66fb9443-539f-4a65-bda7-7bda809f17f8 https://doi.org/10.1093/icesjms/fsu112 eng eng https://orbit.dtu.dk/en/publications/66fb9443-539f-4a65-bda7-7bda809f17f8 info:eu-repo/semantics/closedAccess Neumann , V , Köster , F , Schaber , M & Eero , M 2014 , ' Recovery in eastern Baltic cod: is increased recruitment caused by decreased predation on early life stages? ' , ICES Journal of Marine Science , vol. 71 , no. 6 , pp. 1382-1392 . https://doi.org/10.1093/icesjms/fsu112 Original Articles article 2014 ftdtupubl https://doi.org/10.1093/icesjms/fsu112 2024-07-08T23:51:45Z 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 Technical University of Denmark: DTU Orbit ICES Journal of Marine Science 71 6 1382 1392 |
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Technical University of Denmark: DTU Orbit |
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ftdtupubl |
language |
English |
topic |
Original Articles |
spellingShingle |
Original Articles Neumann, Viola Köster, Fritz Schaber, M. Eero, Margit Recovery in eastern Baltic cod: is increased recruitment caused by decreased predation on early life stages? |
topic_facet |
Original Articles |
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, Fritz Schaber, M. Eero, Margit |
author_facet |
Neumann, Viola Köster, Fritz Schaber, M. 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? |
publishDate |
2014 |
url |
https://orbit.dtu.dk/en/publications/66fb9443-539f-4a65-bda7-7bda809f17f8 https://doi.org/10.1093/icesjms/fsu112 |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
Neumann , V , Köster , F , Schaber , M & Eero , M 2014 , ' Recovery in eastern Baltic cod: is increased recruitment caused by decreased predation on early life stages? ' , ICES Journal of Marine Science , vol. 71 , no. 6 , pp. 1382-1392 . https://doi.org/10.1093/icesjms/fsu112 |
op_relation |
https://orbit.dtu.dk/en/publications/66fb9443-539f-4a65-bda7-7bda809f17f8 |
op_rights |
info:eu-repo/semantics/closedAccess |
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 |
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1810444680737849344 |