Correlation between the seasonal distribution of harbour porpoises and their prey in the Sound, Baltic Sea
Low densities of harbour porpoises in winter (November–March) and high densities in summer (April–October) were found in the Sound, connecting the Baltic Sea and Kattegat. Due to their high energy requirements, it is hypothesized that the density of harbour porpoises is related to local prey abundan...
Published in: | Marine Biology |
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Language: | English |
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2012
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Online Access: | https://curis.ku.dk/portal/da/publications/correlation-between-the-seasonal-distribution-of-harbour-porpoises-and-their-prey-in-the-sound-baltic-sea(1d2a9dda-10e4-404e-aaa3-b194ed57a831).html https://doi.org/10.1007/s00227-012-1883-z |
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ftcopenhagenunip:oai:pure.atira.dk:publications/1d2a9dda-10e4-404e-aaa3-b194ed57a831 2024-04-28T08:12:58+00:00 Correlation between the seasonal distribution of harbour porpoises and their prey in the Sound, Baltic Sea Sveegaard, Signe Andreasen, Heidi Mouritsen, Kim Nørgaard Jeppesen, Jens Peder Teilmann, Jonas Kinze, Carl C. 2012 https://curis.ku.dk/portal/da/publications/correlation-between-the-seasonal-distribution-of-harbour-porpoises-and-their-prey-in-the-sound-baltic-sea(1d2a9dda-10e4-404e-aaa3-b194ed57a831).html https://doi.org/10.1007/s00227-012-1883-z eng eng info:eu-repo/semantics/restrictedAccess Sveegaard , S , Andreasen , H , Mouritsen , K N , Jeppesen , J P , Teilmann , J & Kinze , C C 2012 , ' Correlation between the seasonal distribution of harbour porpoises and their prey in the Sound, Baltic Sea ' , Marine Biology , vol. 159 , no. 5 , pp. 1029-1037 . https://doi.org/10.1007/s00227-012-1883-z article 2012 ftcopenhagenunip https://doi.org/10.1007/s00227-012-1883-z 2024-04-11T00:22:37Z Low densities of harbour porpoises in winter (November–March) and high densities in summer (April–October) were found in the Sound, connecting the Baltic Sea and Kattegat. Due to their high energy requirements, it is hypothesized that the density of harbour porpoises is related to local prey abundance. This was tested by examining the stomach content of 53 harbour porpoises collected between 1987 and 2010 in the Sound (high season, 34 porpoises; low season, 19 porpoises). A total of 1,442 individual fish specimens from thirteen species were identified. Twelve of these were present in the high–porpoise density season and seven in the low-density season. The distribution of occurrence and the distribution of number of fish species were different between seasons, indicating a shift in prey intake between seasons. Furthermore, during the high-density season, the mean and total prey weight per stomach as well as the prey species diversity was higher. However, no difference was found in the number of prey species between the two seasons, indicating a higher quality of prey in the high-density season. Atlantic cod was found to be the main prey species in terms of weight in the high-density season while Atlantic herring and Atlantic cod were equally important during the low-density season. Prey availability and predictability are suggested as the main drivers for harbour porpoise distribution, and this could be caused by the formation of frontal zones in spring in the northern part of the Sound, leading to prey concentrations in predictable areas. Article in Journal/Newspaper atlantic cod Harbour porpoise University of Copenhagen: Research Marine Biology 159 5 1029 1037 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
Low densities of harbour porpoises in winter (November–March) and high densities in summer (April–October) were found in the Sound, connecting the Baltic Sea and Kattegat. Due to their high energy requirements, it is hypothesized that the density of harbour porpoises is related to local prey abundance. This was tested by examining the stomach content of 53 harbour porpoises collected between 1987 and 2010 in the Sound (high season, 34 porpoises; low season, 19 porpoises). A total of 1,442 individual fish specimens from thirteen species were identified. Twelve of these were present in the high–porpoise density season and seven in the low-density season. The distribution of occurrence and the distribution of number of fish species were different between seasons, indicating a shift in prey intake between seasons. Furthermore, during the high-density season, the mean and total prey weight per stomach as well as the prey species diversity was higher. However, no difference was found in the number of prey species between the two seasons, indicating a higher quality of prey in the high-density season. Atlantic cod was found to be the main prey species in terms of weight in the high-density season while Atlantic herring and Atlantic cod were equally important during the low-density season. Prey availability and predictability are suggested as the main drivers for harbour porpoise distribution, and this could be caused by the formation of frontal zones in spring in the northern part of the Sound, leading to prey concentrations in predictable areas. |
format |
Article in Journal/Newspaper |
author |
Sveegaard, Signe Andreasen, Heidi Mouritsen, Kim Nørgaard Jeppesen, Jens Peder Teilmann, Jonas Kinze, Carl C. |
spellingShingle |
Sveegaard, Signe Andreasen, Heidi Mouritsen, Kim Nørgaard Jeppesen, Jens Peder Teilmann, Jonas Kinze, Carl C. Correlation between the seasonal distribution of harbour porpoises and their prey in the Sound, Baltic Sea |
author_facet |
Sveegaard, Signe Andreasen, Heidi Mouritsen, Kim Nørgaard Jeppesen, Jens Peder Teilmann, Jonas Kinze, Carl C. |
author_sort |
Sveegaard, Signe |
title |
Correlation between the seasonal distribution of harbour porpoises and their prey in the Sound, Baltic Sea |
title_short |
Correlation between the seasonal distribution of harbour porpoises and their prey in the Sound, Baltic Sea |
title_full |
Correlation between the seasonal distribution of harbour porpoises and their prey in the Sound, Baltic Sea |
title_fullStr |
Correlation between the seasonal distribution of harbour porpoises and their prey in the Sound, Baltic Sea |
title_full_unstemmed |
Correlation between the seasonal distribution of harbour porpoises and their prey in the Sound, Baltic Sea |
title_sort |
correlation between the seasonal distribution of harbour porpoises and their prey in the sound, baltic sea |
publishDate |
2012 |
url |
https://curis.ku.dk/portal/da/publications/correlation-between-the-seasonal-distribution-of-harbour-porpoises-and-their-prey-in-the-sound-baltic-sea(1d2a9dda-10e4-404e-aaa3-b194ed57a831).html https://doi.org/10.1007/s00227-012-1883-z |
genre |
atlantic cod Harbour porpoise |
genre_facet |
atlantic cod Harbour porpoise |
op_source |
Sveegaard , S , Andreasen , H , Mouritsen , K N , Jeppesen , J P , Teilmann , J & Kinze , C C 2012 , ' Correlation between the seasonal distribution of harbour porpoises and their prey in the Sound, Baltic Sea ' , Marine Biology , vol. 159 , no. 5 , pp. 1029-1037 . https://doi.org/10.1007/s00227-012-1883-z |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s00227-012-1883-z |
container_title |
Marine Biology |
container_volume |
159 |
container_issue |
5 |
container_start_page |
1029 |
op_container_end_page |
1037 |
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1797579662990245888 |