Geographical movements, site fidelity and connectivity of killer whales within and outside herring grounds in Icelandic coastal waters
Investigating the movements and site fidelity of individuals enhances our understanding of population ecology and structure. Killer whales occur around the coast of Iceland; however, information on the connectivity between different regions is limited to herring grounds, where they are observed freq...
Published in: | Marine Biology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2024
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Online Access: | https://curis.ku.dk/portal/da/publications/geographical-movements-site-fidelity-and-connectivity-of-killer-whales-within-and-outside-herring-grounds-in-icelandic-coastal-waters(512a23e6-07fd-4f36-9973-696f34d3d67a).html https://doi.org/10.1007/s00227-023-04345-7 |
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ftcopenhagenunip:oai:pure.atira.dk:publications/512a23e6-07fd-4f36-9973-696f34d3d67a 2024-06-09T07:47:12+00:00 Geographical movements, site fidelity and connectivity of killer whales within and outside herring grounds in Icelandic coastal waters Marchon, Tatiana M. J. Rasmussen, Marianne H. Basran, Charla J. Whittaker, Megan Bertulli, Chiara G. Harlow, Cathy Lott, Rob Boisseau, Oliver Gendron, Frédéric Guo, Luisa Hudson, Tess Jónsson, Hörður Kershaw, Alexa Kinni, Joonas Lionnet, Laetitia A. M. G. Louis, Marie Messina, Matt Michel, Hanna Neubarth, Barbara K. Ovide, Belén G. Podt, Annemieke E. Rempel, Jonathan N. Ryan, Conor Savage, Eddy Scott, Judith Smit, Ronald Verdaat, Hans Vignisson, Solvi R. Samarra, Filipa I. P. 2024 https://curis.ku.dk/portal/da/publications/geographical-movements-site-fidelity-and-connectivity-of-killer-whales-within-and-outside-herring-grounds-in-icelandic-coastal-waters(512a23e6-07fd-4f36-9973-696f34d3d67a).html https://doi.org/10.1007/s00227-023-04345-7 eng eng info:eu-repo/semantics/closedAccess Marchon , T M J , Rasmussen , M H , Basran , C J , Whittaker , M , Bertulli , C G , Harlow , C , Lott , R , Boisseau , O , Gendron , F , Guo , L , Hudson , T , Jónsson , H , Kershaw , A , Kinni , J , Lionnet , L A M G , Louis , M , Messina , M , Michel , H , Neubarth , B K , Ovide , B G , Podt , A E , Rempel , J N , Ryan , C , Savage , E , Scott , J , Smit , R , Verdaat , H , Vignisson , S R & Samarra , F I P 2024 , ' Geographical movements, site fidelity and connectivity of killer whales within and outside herring grounds in Icelandic coastal waters ' , Marine Biology , vol. 171 , 30 . https://doi.org/10.1007/s00227-023-04345-7 Movements North Atlantic Orcinus orca Photo-identification Residency article 2024 ftcopenhagenunip https://doi.org/10.1007/s00227-023-04345-7 2024-05-16T11:29:31Z Investigating the movements and site fidelity of individuals enhances our understanding of population ecology and structure. Killer whales occur around the coast of Iceland; however, information on the connectivity between different regions is limited to herring grounds, where they are observed frequently. In this study, we used photo-identification data to investigate the movements and site fidelity of whales within (South and West) and outside (Southwest, Northwest, Northeast and East) Icelandic herring grounds. Additionally, we used a 10-year photo-identification dataset in the South to investigate long-term site fidelity patterns to a single location. Of the 440 individuals sighted more than once, nearly half (48%) moved between herring grounds and site fidelity was higher within, compared to outside, herring grounds. Outside herring grounds, individuals showed: more movement from Southwest to West compare to South, indicating this region is not exclusively a passage between herring grounds; low site fidelity to the Northeast with fewer photographic matches to other regions, suggesting individuals found here may be part of an offshore population that occasionally visits the area; and low proportion of matches to other regions in the Northwest and East, although small sample sizes precluded firm conclusions. Finally, long-term residency of killer whales in the South showed dynamic patterns, likely caused by prey availability and/or environmental changes. This study elucidates the complexities of killer whale occurrence and connectivity within the North Atlantic and suggests population structure that should be further investigated for appropriate regional conservation assessments. Article in Journal/Newspaper Iceland Killer Whale North Atlantic Orca Orcinus orca Killer whale University of Copenhagen: Research Marine Biology 171 1 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
Movements North Atlantic Orcinus orca Photo-identification Residency |
spellingShingle |
Movements North Atlantic Orcinus orca Photo-identification Residency Marchon, Tatiana M. J. Rasmussen, Marianne H. Basran, Charla J. Whittaker, Megan Bertulli, Chiara G. Harlow, Cathy Lott, Rob Boisseau, Oliver Gendron, Frédéric Guo, Luisa Hudson, Tess Jónsson, Hörður Kershaw, Alexa Kinni, Joonas Lionnet, Laetitia A. M. G. Louis, Marie Messina, Matt Michel, Hanna Neubarth, Barbara K. Ovide, Belén G. Podt, Annemieke E. Rempel, Jonathan N. Ryan, Conor Savage, Eddy Scott, Judith Smit, Ronald Verdaat, Hans Vignisson, Solvi R. Samarra, Filipa I. P. Geographical movements, site fidelity and connectivity of killer whales within and outside herring grounds in Icelandic coastal waters |
topic_facet |
Movements North Atlantic Orcinus orca Photo-identification Residency |
description |
Investigating the movements and site fidelity of individuals enhances our understanding of population ecology and structure. Killer whales occur around the coast of Iceland; however, information on the connectivity between different regions is limited to herring grounds, where they are observed frequently. In this study, we used photo-identification data to investigate the movements and site fidelity of whales within (South and West) and outside (Southwest, Northwest, Northeast and East) Icelandic herring grounds. Additionally, we used a 10-year photo-identification dataset in the South to investigate long-term site fidelity patterns to a single location. Of the 440 individuals sighted more than once, nearly half (48%) moved between herring grounds and site fidelity was higher within, compared to outside, herring grounds. Outside herring grounds, individuals showed: more movement from Southwest to West compare to South, indicating this region is not exclusively a passage between herring grounds; low site fidelity to the Northeast with fewer photographic matches to other regions, suggesting individuals found here may be part of an offshore population that occasionally visits the area; and low proportion of matches to other regions in the Northwest and East, although small sample sizes precluded firm conclusions. Finally, long-term residency of killer whales in the South showed dynamic patterns, likely caused by prey availability and/or environmental changes. This study elucidates the complexities of killer whale occurrence and connectivity within the North Atlantic and suggests population structure that should be further investigated for appropriate regional conservation assessments. |
format |
Article in Journal/Newspaper |
author |
Marchon, Tatiana M. J. Rasmussen, Marianne H. Basran, Charla J. Whittaker, Megan Bertulli, Chiara G. Harlow, Cathy Lott, Rob Boisseau, Oliver Gendron, Frédéric Guo, Luisa Hudson, Tess Jónsson, Hörður Kershaw, Alexa Kinni, Joonas Lionnet, Laetitia A. M. G. Louis, Marie Messina, Matt Michel, Hanna Neubarth, Barbara K. Ovide, Belén G. Podt, Annemieke E. Rempel, Jonathan N. Ryan, Conor Savage, Eddy Scott, Judith Smit, Ronald Verdaat, Hans Vignisson, Solvi R. Samarra, Filipa I. P. |
author_facet |
Marchon, Tatiana M. J. Rasmussen, Marianne H. Basran, Charla J. Whittaker, Megan Bertulli, Chiara G. Harlow, Cathy Lott, Rob Boisseau, Oliver Gendron, Frédéric Guo, Luisa Hudson, Tess Jónsson, Hörður Kershaw, Alexa Kinni, Joonas Lionnet, Laetitia A. M. G. Louis, Marie Messina, Matt Michel, Hanna Neubarth, Barbara K. Ovide, Belén G. Podt, Annemieke E. Rempel, Jonathan N. Ryan, Conor Savage, Eddy Scott, Judith Smit, Ronald Verdaat, Hans Vignisson, Solvi R. Samarra, Filipa I. P. |
author_sort |
Marchon, Tatiana M. J. |
title |
Geographical movements, site fidelity and connectivity of killer whales within and outside herring grounds in Icelandic coastal waters |
title_short |
Geographical movements, site fidelity and connectivity of killer whales within and outside herring grounds in Icelandic coastal waters |
title_full |
Geographical movements, site fidelity and connectivity of killer whales within and outside herring grounds in Icelandic coastal waters |
title_fullStr |
Geographical movements, site fidelity and connectivity of killer whales within and outside herring grounds in Icelandic coastal waters |
title_full_unstemmed |
Geographical movements, site fidelity and connectivity of killer whales within and outside herring grounds in Icelandic coastal waters |
title_sort |
geographical movements, site fidelity and connectivity of killer whales within and outside herring grounds in icelandic coastal waters |
publishDate |
2024 |
url |
https://curis.ku.dk/portal/da/publications/geographical-movements-site-fidelity-and-connectivity-of-killer-whales-within-and-outside-herring-grounds-in-icelandic-coastal-waters(512a23e6-07fd-4f36-9973-696f34d3d67a).html https://doi.org/10.1007/s00227-023-04345-7 |
genre |
Iceland Killer Whale North Atlantic Orca Orcinus orca Killer whale |
genre_facet |
Iceland Killer Whale North Atlantic Orca Orcinus orca Killer whale |
op_source |
Marchon , T M J , Rasmussen , M H , Basran , C J , Whittaker , M , Bertulli , C G , Harlow , C , Lott , R , Boisseau , O , Gendron , F , Guo , L , Hudson , T , Jónsson , H , Kershaw , A , Kinni , J , Lionnet , L A M G , Louis , M , Messina , M , Michel , H , Neubarth , B K , Ovide , B G , Podt , A E , Rempel , J N , Ryan , C , Savage , E , Scott , J , Smit , R , Verdaat , H , Vignisson , S R & Samarra , F I P 2024 , ' Geographical movements, site fidelity and connectivity of killer whales within and outside herring grounds in Icelandic coastal waters ' , Marine Biology , vol. 171 , 30 . https://doi.org/10.1007/s00227-023-04345-7 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1007/s00227-023-04345-7 |
container_title |
Marine Biology |
container_volume |
171 |
container_issue |
1 |
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1801378156730384384 |