Distribution of ship-following seabirds and their utilization of discards in the North Sea in summer
Prey availability is one of the factors determining the distribution of seabirds at sea. Northern fulmars Fulmarus glaclalis and black-legged kittiwakes Rissa tridactyla were the most regular and frequent ship-followers across the central and northern North Sea during 2 surveys with a fishery resear...
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Online Access: | https://oceanrep.geomar.de/id/eprint/42648/ https://oceanrep.geomar.de/id/eprint/42648/1/m106p001.pdf |
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ftoceanrep:oai:oceanrep.geomar.de:42648 2023-05-15T17:07:22+02:00 Distribution of ship-following seabirds and their utilization of discards in the North Sea in summer Garthe, Stefan Hüppop, Ommo 1994-03-17 text https://oceanrep.geomar.de/id/eprint/42648/ https://oceanrep.geomar.de/id/eprint/42648/1/m106p001.pdf en eng Inter Research https://oceanrep.geomar.de/id/eprint/42648/1/m106p001.pdf Garthe, S. and Hüppop, O. (1994) Distribution of ship-following seabirds and their utilization of discards in the North Sea in summer. Open Access Marine Ecology Progress Series, 106 . pp. 1-9. info:eu-repo/semantics/openAccess Article PeerReviewed 1994 ftoceanrep 2023-04-07T15:39:14Z Prey availability is one of the factors determining the distribution of seabirds at sea. Northern fulmars Fulmarus glaclalis and black-legged kittiwakes Rissa tridactyla were the most regular and frequent ship-followers across the central and northern North Sea during 2 surveys with a fishery research vessel in May-June and July-August 1992. Sixteen other species occurred less often and/or in lower numbers. Birds consumed 84 % of experimentally discarded roundfish and 8 % of discarded flatfish. On average, northern gannets Morus bassanus took the largest individuals of most fish specles, black-legged kittywakes the smallest The average size choices of herring gulls Larus argentatus, lesser black-backed gulls Larus fuscus and northern fulmars lay between these 2 extremes. The choice of fish lengths by birds vaned with different fish species. Northern gannet was the most successful species in consuming discards. Northern fulmars success rates decreased with the presence of larger ship-followers but were never high. Black-headed gull Larus ridibundus and common gull Larus canus were less successful than the more frequent typical ship-following species. Article in Journal/Newspaper Larus canus rissa tridactyla Black-headed Gull Larus ridibundus OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Prey availability is one of the factors determining the distribution of seabirds at sea. Northern fulmars Fulmarus glaclalis and black-legged kittiwakes Rissa tridactyla were the most regular and frequent ship-followers across the central and northern North Sea during 2 surveys with a fishery research vessel in May-June and July-August 1992. Sixteen other species occurred less often and/or in lower numbers. Birds consumed 84 % of experimentally discarded roundfish and 8 % of discarded flatfish. On average, northern gannets Morus bassanus took the largest individuals of most fish specles, black-legged kittywakes the smallest The average size choices of herring gulls Larus argentatus, lesser black-backed gulls Larus fuscus and northern fulmars lay between these 2 extremes. The choice of fish lengths by birds vaned with different fish species. Northern gannet was the most successful species in consuming discards. Northern fulmars success rates decreased with the presence of larger ship-followers but were never high. Black-headed gull Larus ridibundus and common gull Larus canus were less successful than the more frequent typical ship-following species. |
format |
Article in Journal/Newspaper |
author |
Garthe, Stefan Hüppop, Ommo |
spellingShingle |
Garthe, Stefan Hüppop, Ommo Distribution of ship-following seabirds and their utilization of discards in the North Sea in summer |
author_facet |
Garthe, Stefan Hüppop, Ommo |
author_sort |
Garthe, Stefan |
title |
Distribution of ship-following seabirds and their utilization of discards in the North Sea in summer |
title_short |
Distribution of ship-following seabirds and their utilization of discards in the North Sea in summer |
title_full |
Distribution of ship-following seabirds and their utilization of discards in the North Sea in summer |
title_fullStr |
Distribution of ship-following seabirds and their utilization of discards in the North Sea in summer |
title_full_unstemmed |
Distribution of ship-following seabirds and their utilization of discards in the North Sea in summer |
title_sort |
distribution of ship-following seabirds and their utilization of discards in the north sea in summer |
publisher |
Inter Research |
publishDate |
1994 |
url |
https://oceanrep.geomar.de/id/eprint/42648/ https://oceanrep.geomar.de/id/eprint/42648/1/m106p001.pdf |
genre |
Larus canus rissa tridactyla Black-headed Gull Larus ridibundus |
genre_facet |
Larus canus rissa tridactyla Black-headed Gull Larus ridibundus |
op_relation |
https://oceanrep.geomar.de/id/eprint/42648/1/m106p001.pdf Garthe, S. and Hüppop, O. (1994) Distribution of ship-following seabirds and their utilization of discards in the North Sea in summer. Open Access Marine Ecology Progress Series, 106 . pp. 1-9. |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766062751181963264 |