Characteristics of early Atlantic cod (Gadus morhua L.) catches based on otoliths recovered from archaeological excavations at medieval to early modern sites in northern Norway
We compared stock origin, size- and age-distributions, and length growth rates derived from Atlantic cod otoliths from archaeological excavations at two sites in northern Norway: Vágar in Lofoten (68°12′N, AD 1156–1285) and the Værbukta site (70°57′N, AD 1450–1680). For comparison, modern otoliths w...
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Online Access: | https://hdl.handle.net/11250/3062779 https://doi.org/10.1093/icesjms/fsac201 |
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ftunivstavanger:oai:uis.brage.unit.no:11250/3062779 2023-06-11T04:07:58+02:00 Characteristics of early Atlantic cod (Gadus morhua L.) catches based on otoliths recovered from archaeological excavations at medieval to early modern sites in northern Norway Pedersen, Torstein Amundsen, Colin Patrick Wickler, Stephen 2022-12-07T14:02:57Z application/pdf https://hdl.handle.net/11250/3062779 https://doi.org/10.1093/icesjms/fsac201 eng eng Oxford Academic Pedersen, T., Amundsen, C., & Wickler, S. (2022). Characteristics of early Atlantic cod (Gadus morhua L.) catches based on otoliths recovered from archaeological excavations at medieval to early modern sites in northern Norway. ICES Journal of Marine Science, 79(10), 2667-2681. urn:issn:1054-3139 https://hdl.handle.net/11250/3062779 https://doi.org/10.1093/icesjms/fsac201 cristin:2090123 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no The authors 15 ICES Journal of Marine Science VDP::Landbruks- og Fiskerifag: 900 Peer reviewed Journal article 2022 ftunivstavanger https://doi.org/10.1093/icesjms/fsac201 2023-05-29T16:03:40Z We compared stock origin, size- and age-distributions, and length growth rates derived from Atlantic cod otoliths from archaeological excavations at two sites in northern Norway: Vágar in Lofoten (68°12′N, AD 1156–1285) and the Værbukta site (70°57′N, AD 1450–1680). For comparison, modern otoliths were sampled during 1993–2001 from areas situated close to Vágar and Værbukta. Length-at-age from pre-20th century samples was back-calculated from otolith growth increments. The pre-20th century cod from Vágar was dominated by northeast Arctic cod (NEAC) of age 9–16 years and were much older and larger than the pre-20th century cod from Værbukta, which were dominated by coastal cod of age 2–6 years. Cod from Vágar had smaller increments and a shorter back-calculated length-at-age than modern cod from Lofoten. In contrast, the predominantly coastal cod from Værbukta had similar increments width and length-at-age as in modern samples. Age-distributions and mortality rates of the pre-20th century Vágar cod and NEAC from Lofoten in the 1930s were similar, indicating that both age at maturity and longevity were similar for these time periods. This contrasts with truncated and young age-distributions of spawning NEAC in the 1980s and 1990s following the strong increase in fishing and total mortality rate in the period 1955–2000. publishedVersion Article in Journal/Newspaper Arctic cod Arctic atlantic cod Gadus morhua Lofoten Northeast Arctic cod Northern Norway University of Stavanger: UiS Brage Arctic Lofoten Norway Vágar ENVELOPE(-7.260,-7.260,62.095,62.095) Værbukta ENVELOPE(25.025,25.025,70.959,70.959) ICES Journal of Marine Science 79 10 2667 2681 |
institution |
Open Polar |
collection |
University of Stavanger: UiS Brage |
op_collection_id |
ftunivstavanger |
language |
English |
topic |
VDP::Landbruks- og Fiskerifag: 900 |
spellingShingle |
VDP::Landbruks- og Fiskerifag: 900 Pedersen, Torstein Amundsen, Colin Patrick Wickler, Stephen Characteristics of early Atlantic cod (Gadus morhua L.) catches based on otoliths recovered from archaeological excavations at medieval to early modern sites in northern Norway |
topic_facet |
VDP::Landbruks- og Fiskerifag: 900 |
description |
We compared stock origin, size- and age-distributions, and length growth rates derived from Atlantic cod otoliths from archaeological excavations at two sites in northern Norway: Vágar in Lofoten (68°12′N, AD 1156–1285) and the Værbukta site (70°57′N, AD 1450–1680). For comparison, modern otoliths were sampled during 1993–2001 from areas situated close to Vágar and Værbukta. Length-at-age from pre-20th century samples was back-calculated from otolith growth increments. The pre-20th century cod from Vágar was dominated by northeast Arctic cod (NEAC) of age 9–16 years and were much older and larger than the pre-20th century cod from Værbukta, which were dominated by coastal cod of age 2–6 years. Cod from Vágar had smaller increments and a shorter back-calculated length-at-age than modern cod from Lofoten. In contrast, the predominantly coastal cod from Værbukta had similar increments width and length-at-age as in modern samples. Age-distributions and mortality rates of the pre-20th century Vágar cod and NEAC from Lofoten in the 1930s were similar, indicating that both age at maturity and longevity were similar for these time periods. This contrasts with truncated and young age-distributions of spawning NEAC in the 1980s and 1990s following the strong increase in fishing and total mortality rate in the period 1955–2000. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Pedersen, Torstein Amundsen, Colin Patrick Wickler, Stephen |
author_facet |
Pedersen, Torstein Amundsen, Colin Patrick Wickler, Stephen |
author_sort |
Pedersen, Torstein |
title |
Characteristics of early Atlantic cod (Gadus morhua L.) catches based on otoliths recovered from archaeological excavations at medieval to early modern sites in northern Norway |
title_short |
Characteristics of early Atlantic cod (Gadus morhua L.) catches based on otoliths recovered from archaeological excavations at medieval to early modern sites in northern Norway |
title_full |
Characteristics of early Atlantic cod (Gadus morhua L.) catches based on otoliths recovered from archaeological excavations at medieval to early modern sites in northern Norway |
title_fullStr |
Characteristics of early Atlantic cod (Gadus morhua L.) catches based on otoliths recovered from archaeological excavations at medieval to early modern sites in northern Norway |
title_full_unstemmed |
Characteristics of early Atlantic cod (Gadus morhua L.) catches based on otoliths recovered from archaeological excavations at medieval to early modern sites in northern Norway |
title_sort |
characteristics of early atlantic cod (gadus morhua l.) catches based on otoliths recovered from archaeological excavations at medieval to early modern sites in northern norway |
publisher |
Oxford Academic |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/3062779 https://doi.org/10.1093/icesjms/fsac201 |
long_lat |
ENVELOPE(-7.260,-7.260,62.095,62.095) ENVELOPE(25.025,25.025,70.959,70.959) |
geographic |
Arctic Lofoten Norway Vágar Værbukta |
geographic_facet |
Arctic Lofoten Norway Vágar Værbukta |
genre |
Arctic cod Arctic atlantic cod Gadus morhua Lofoten Northeast Arctic cod Northern Norway |
genre_facet |
Arctic cod Arctic atlantic cod Gadus morhua Lofoten Northeast Arctic cod Northern Norway |
op_source |
15 ICES Journal of Marine Science |
op_relation |
Pedersen, T., Amundsen, C., & Wickler, S. (2022). Characteristics of early Atlantic cod (Gadus morhua L.) catches based on otoliths recovered from archaeological excavations at medieval to early modern sites in northern Norway. ICES Journal of Marine Science, 79(10), 2667-2681. urn:issn:1054-3139 https://hdl.handle.net/11250/3062779 https://doi.org/10.1093/icesjms/fsac201 cristin:2090123 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no The authors |
op_doi |
https://doi.org/10.1093/icesjms/fsac201 |
container_title |
ICES Journal of Marine Science |
container_volume |
79 |
container_issue |
10 |
container_start_page |
2667 |
op_container_end_page |
2681 |
_version_ |
1768381074763677696 |