High-latitude climate variability and its effect on fisheries resources as revealed by fossil cod otoliths
Abstract Geffen, A. J., Høie, H., Folkvord, A., Hufthammer, A. K., Andersson, C., Ninnemann, U., Pedersen, R. B., and Nedreaas, K. 2011. High-latitude climate variability and its effect on fisheries resources as revealed by fossil cod otoliths. – ICES Journal of Marine Science, 68: 1081–1089. Cod (G...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsr017 http://academic.oup.com/icesjms/article-pdf/68/6/1081/29142987/fsr017.pdf |
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croxfordunivpr:10.1093/icesjms/fsr017 2024-05-12T07:57:55+00:00 High-latitude climate variability and its effect on fisheries resources as revealed by fossil cod otoliths Geffen, Audrey J. Høie, Hans Folkvord, Arild Hufthammer, Anne Karin Andersson, Carin Ninnemann, Ulysses Pedersen, Rolf B. Nedreaas, Kjell 2011 http://dx.doi.org/10.1093/icesjms/fsr017 http://academic.oup.com/icesjms/article-pdf/68/6/1081/29142987/fsr017.pdf en eng Oxford University Press (OUP) http://creativecommons.org/licenses/by-nc/2.5/ ICES Journal of Marine Science volume 68, issue 6, page 1081-1089 ISSN 1095-9289 1054-3139 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2011 croxfordunivpr https://doi.org/10.1093/icesjms/fsr017 2024-04-18T08:18:06Z Abstract Geffen, A. J., Høie, H., Folkvord, A., Hufthammer, A. K., Andersson, C., Ninnemann, U., Pedersen, R. B., and Nedreaas, K. 2011. High-latitude climate variability and its effect on fisheries resources as revealed by fossil cod otoliths. – ICES Journal of Marine Science, 68: 1081–1089. Cod (Gadus morhua) otoliths from archaeological sites in northern Norway were analysed to reconstruct the temperature regime and determine the age structure, growth, and population identity of the fish harvested. Otoliths were selected from late- and post-medieval sites (700–300 years ago) to evaluate historical changes in the geographic region that matches the present-day stocks of Northeast Arctic cod (NEAC) and Norwegian coastal cod (NCC). Seasonal temperature cycles were reconstructed from stable isotope (δ18O) measurements along transects representing fish ages 1.5–3 years old. Reconstructions of the size, age, and growth characteristics of individual fish were based on otolith growth increments. The geographical source and stock identity of the individuals were estimated based on otolith elemental composition and otolith growth features. Both NCC and NEAC fish were represented at Måsøy and Vanna. The results indicate that fishing at Vanna exploited NEAC during their spawning migration, compared with fishing at Måsøy, which was restricted to more coastal fish. Fish growth patterns appeared to be affected by changes in the temperature regimes as estimated from otolith δ18O and back-calculated fish length-at-age, with evident differences between pre- and post-1600 periods. Article in Journal/Newspaper Arctic cod Arctic Gadus morhua Northeast Arctic cod Northern Norway Oxford University Press Arctic Norway Pedersen ENVELOPE(140.013,140.013,-66.668,-66.668) Måsøy ENVELOPE(24.661,24.661,70.997,70.997) ICES Journal of Marine Science 68 6 1081 1089 |
institution |
Open Polar |
collection |
Oxford University Press |
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 Geffen, Audrey J. Høie, Hans Folkvord, Arild Hufthammer, Anne Karin Andersson, Carin Ninnemann, Ulysses Pedersen, Rolf B. Nedreaas, Kjell High-latitude climate variability and its effect on fisheries resources as revealed by fossil cod otoliths |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Geffen, A. J., Høie, H., Folkvord, A., Hufthammer, A. K., Andersson, C., Ninnemann, U., Pedersen, R. B., and Nedreaas, K. 2011. High-latitude climate variability and its effect on fisheries resources as revealed by fossil cod otoliths. – ICES Journal of Marine Science, 68: 1081–1089. Cod (Gadus morhua) otoliths from archaeological sites in northern Norway were analysed to reconstruct the temperature regime and determine the age structure, growth, and population identity of the fish harvested. Otoliths were selected from late- and post-medieval sites (700–300 years ago) to evaluate historical changes in the geographic region that matches the present-day stocks of Northeast Arctic cod (NEAC) and Norwegian coastal cod (NCC). Seasonal temperature cycles were reconstructed from stable isotope (δ18O) measurements along transects representing fish ages 1.5–3 years old. Reconstructions of the size, age, and growth characteristics of individual fish were based on otolith growth increments. The geographical source and stock identity of the individuals were estimated based on otolith elemental composition and otolith growth features. Both NCC and NEAC fish were represented at Måsøy and Vanna. The results indicate that fishing at Vanna exploited NEAC during their spawning migration, compared with fishing at Måsøy, which was restricted to more coastal fish. Fish growth patterns appeared to be affected by changes in the temperature regimes as estimated from otolith δ18O and back-calculated fish length-at-age, with evident differences between pre- and post-1600 periods. |
format |
Article in Journal/Newspaper |
author |
Geffen, Audrey J. Høie, Hans Folkvord, Arild Hufthammer, Anne Karin Andersson, Carin Ninnemann, Ulysses Pedersen, Rolf B. Nedreaas, Kjell |
author_facet |
Geffen, Audrey J. Høie, Hans Folkvord, Arild Hufthammer, Anne Karin Andersson, Carin Ninnemann, Ulysses Pedersen, Rolf B. Nedreaas, Kjell |
author_sort |
Geffen, Audrey J. |
title |
High-latitude climate variability and its effect on fisheries resources as revealed by fossil cod otoliths |
title_short |
High-latitude climate variability and its effect on fisheries resources as revealed by fossil cod otoliths |
title_full |
High-latitude climate variability and its effect on fisheries resources as revealed by fossil cod otoliths |
title_fullStr |
High-latitude climate variability and its effect on fisheries resources as revealed by fossil cod otoliths |
title_full_unstemmed |
High-latitude climate variability and its effect on fisheries resources as revealed by fossil cod otoliths |
title_sort |
high-latitude climate variability and its effect on fisheries resources as revealed by fossil cod otoliths |
publisher |
Oxford University Press (OUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1093/icesjms/fsr017 http://academic.oup.com/icesjms/article-pdf/68/6/1081/29142987/fsr017.pdf |
long_lat |
ENVELOPE(140.013,140.013,-66.668,-66.668) ENVELOPE(24.661,24.661,70.997,70.997) |
geographic |
Arctic Norway Pedersen Måsøy |
geographic_facet |
Arctic Norway Pedersen Måsøy |
genre |
Arctic cod Arctic Gadus morhua Northeast Arctic cod Northern Norway |
genre_facet |
Arctic cod Arctic Gadus morhua Northeast Arctic cod Northern Norway |
op_source |
ICES Journal of Marine Science volume 68, issue 6, page 1081-1089 ISSN 1095-9289 1054-3139 |
op_rights |
http://creativecommons.org/licenses/by-nc/2.5/ |
op_doi |
https://doi.org/10.1093/icesjms/fsr017 |
container_title |
ICES Journal of Marine Science |
container_volume |
68 |
container_issue |
6 |
container_start_page |
1081 |
op_container_end_page |
1089 |
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1798838281232711680 |