Seabird−fish interactions: the fall and rise of a common guillemot Uria aalge population
A major challenge in population ecology is the prediction of population responses to environmental variance. Food availability has long been hypothesized to play a major role in regulating seabird populations. In general, seabirds feed on small pelagic fish and/or young age classes of larger predato...
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Online Access: | http://hdl.handle.net/11250/109206 https://doi.org/10.3354/meps10084 |
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ftimr:oai:imr.brage.unit.no:11250/109206 2023-05-15T14:30:31+02:00 Seabird−fish interactions: the fall and rise of a common guillemot Uria aalge population Erikstad, Kjell E. Reiertsen, Tone Kristin Barrett, Robert T. Vikebø, Frode Sandvik, Hanno 2013-02-14 application/pdf http://hdl.handle.net/11250/109206 https://doi.org/10.3354/meps10084 eng eng Inter-Research Erikstad KE, Reiertsen TK, Barrett RT, Vikebø F, Sandvik H (2013) Seabird–fish interactions: the fall and rise of a common guillemot Uria aalge population. Mar Ecol Prog Ser 475:267-276 urn:issn:0171-8630 urn:issn:1616-1599 http://hdl.handle.net/11250/109206 https://doi.org/10.3354/meps10084 267-276 475 Marine Ecology Progress Series arctic cod arktisk torsk stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 Journal article Peer reviewed 2013 ftimr https://doi.org/10.3354/meps10084 2021-09-23T20:16:15Z A major challenge in population ecology is the prediction of population responses to environmental variance. Food availability has long been hypothesized to play a major role in regulating seabird populations. In general, seabirds feed on small pelagic fish and/or young age classes of larger predatory fish. Here we used a logistic population model to predict the temporal variation in the population size of common guillemots Uria aalge in a colony in NE Norway (Hornøya) between 1987 and 2011 in relation to the variation in abundance (acoustic and trawl surveys) of important fish prey species in the Barents Sea. The fish species considered, all of which have been described in the diet of common guillemot chicks and adults on Hornøya, were capelin Mallotus villosus (all age classes), 1-group herring Clupea harengus and 0-group cod Gadus morhua. The guillemot population collapsed by more than 80% during the winter 1986/1987, when the abundance indices of all fish prey species were very low, but has since steadily increased. The annual variation in population growth rate after the population collapse could best be explained by the variation in abundance of 0-group cod (unlagged), and the 0-group cod and capelin 6 and 4 yr earlier, respectively (equalling the age of maturation of guillemots). We also present a numerical ocean model to identify mechanisms affecting spatio-temporal prey availability of 0-group cod around the colony during the breeding season. These results undermine earlier focus on the capelin stock as the main cause of the population crash in common guillemots. 2018-02-14 Article in Journal/Newspaper Arctic cod Arctic Arktis* Barents Sea common guillemot Gadus morhua Uria aalge uria Institute for Marine Research: Brage IMR Arctic Barents Sea Hornøya ENVELOPE(31.154,31.154,70.388,70.388) Norway Marine Ecology Progress Series 475 267 276 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
arctic cod arktisk torsk stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 |
spellingShingle |
arctic cod arktisk torsk stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 Erikstad, Kjell E. Reiertsen, Tone Kristin Barrett, Robert T. Vikebø, Frode Sandvik, Hanno Seabird−fish interactions: the fall and rise of a common guillemot Uria aalge population |
topic_facet |
arctic cod arktisk torsk stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 |
description |
A major challenge in population ecology is the prediction of population responses to environmental variance. Food availability has long been hypothesized to play a major role in regulating seabird populations. In general, seabirds feed on small pelagic fish and/or young age classes of larger predatory fish. Here we used a logistic population model to predict the temporal variation in the population size of common guillemots Uria aalge in a colony in NE Norway (Hornøya) between 1987 and 2011 in relation to the variation in abundance (acoustic and trawl surveys) of important fish prey species in the Barents Sea. The fish species considered, all of which have been described in the diet of common guillemot chicks and adults on Hornøya, were capelin Mallotus villosus (all age classes), 1-group herring Clupea harengus and 0-group cod Gadus morhua. The guillemot population collapsed by more than 80% during the winter 1986/1987, when the abundance indices of all fish prey species were very low, but has since steadily increased. The annual variation in population growth rate after the population collapse could best be explained by the variation in abundance of 0-group cod (unlagged), and the 0-group cod and capelin 6 and 4 yr earlier, respectively (equalling the age of maturation of guillemots). We also present a numerical ocean model to identify mechanisms affecting spatio-temporal prey availability of 0-group cod around the colony during the breeding season. These results undermine earlier focus on the capelin stock as the main cause of the population crash in common guillemots. 2018-02-14 |
format |
Article in Journal/Newspaper |
author |
Erikstad, Kjell E. Reiertsen, Tone Kristin Barrett, Robert T. Vikebø, Frode Sandvik, Hanno |
author_facet |
Erikstad, Kjell E. Reiertsen, Tone Kristin Barrett, Robert T. Vikebø, Frode Sandvik, Hanno |
author_sort |
Erikstad, Kjell E. |
title |
Seabird−fish interactions: the fall and rise of a common guillemot Uria aalge population |
title_short |
Seabird−fish interactions: the fall and rise of a common guillemot Uria aalge population |
title_full |
Seabird−fish interactions: the fall and rise of a common guillemot Uria aalge population |
title_fullStr |
Seabird−fish interactions: the fall and rise of a common guillemot Uria aalge population |
title_full_unstemmed |
Seabird−fish interactions: the fall and rise of a common guillemot Uria aalge population |
title_sort |
seabird−fish interactions: the fall and rise of a common guillemot uria aalge population |
publisher |
Inter-Research |
publishDate |
2013 |
url |
http://hdl.handle.net/11250/109206 https://doi.org/10.3354/meps10084 |
long_lat |
ENVELOPE(31.154,31.154,70.388,70.388) |
geographic |
Arctic Barents Sea Hornøya Norway |
geographic_facet |
Arctic Barents Sea Hornøya Norway |
genre |
Arctic cod Arctic Arktis* Barents Sea common guillemot Gadus morhua Uria aalge uria |
genre_facet |
Arctic cod Arctic Arktis* Barents Sea common guillemot Gadus morhua Uria aalge uria |
op_source |
267-276 475 Marine Ecology Progress Series |
op_relation |
Erikstad KE, Reiertsen TK, Barrett RT, Vikebø F, Sandvik H (2013) Seabird–fish interactions: the fall and rise of a common guillemot Uria aalge population. Mar Ecol Prog Ser 475:267-276 urn:issn:0171-8630 urn:issn:1616-1599 http://hdl.handle.net/11250/109206 https://doi.org/10.3354/meps10084 |
op_doi |
https://doi.org/10.3354/meps10084 |
container_title |
Marine Ecology Progress Series |
container_volume |
475 |
container_start_page |
267 |
op_container_end_page |
276 |
_version_ |
1766304349627088896 |