Aarhus University Seal / Aarhus Universitets segl

Martin Hansen

Migratory and diurnal activity of North Atlantic killer whales (Orcinus orca) off northern Norway

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

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Migratory and diurnal activity of North Atlantic killer whales (Orcinus orca) off northern Norway. / Dietz, Rune; Rikardsen, Audun; Biuw, Martin ; Kleivane, Lars; Noer, Christina; Stalder, Dominique; van Beest, Floris; Riget, Frank Farsø; Sonne, Christian; Hansen, Martin; Strager, Hanne; Tange Olsen, Morten.

I: Journal of Experimental Marine Biology and Ecology, Bind 533, 151456, 12.2020.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

Dietz, R, Rikardsen, A, Biuw, M, Kleivane, L, Noer, C, Stalder, D, van Beest, F, Riget, FF, Sonne, C, Hansen, M, Strager, H & Tange Olsen, M 2020, 'Migratory and diurnal activity of North Atlantic killer whales (Orcinus orca) off northern Norway', Journal of Experimental Marine Biology and Ecology, bind 533, 151456. https://doi.org/10.1016/j.jembe.2020.151456

APA

Dietz, R., Rikardsen, A., Biuw, M., Kleivane, L., Noer, C., Stalder, D., van Beest, F., Riget, F. F., Sonne, C., Hansen, M., Strager, H., & Tange Olsen, M. (2020). Migratory and diurnal activity of North Atlantic killer whales (Orcinus orca) off northern Norway. Journal of Experimental Marine Biology and Ecology, 533, [151456]. https://doi.org/10.1016/j.jembe.2020.151456

CBE

Dietz R, Rikardsen A, Biuw M, Kleivane L, Noer C, Stalder D, van Beest F, Riget FF, Sonne C, Hansen M, Strager H, Tange Olsen M. 2020. Migratory and diurnal activity of North Atlantic killer whales (Orcinus orca) off northern Norway. Journal of Experimental Marine Biology and Ecology. 533:Article 151456. https://doi.org/10.1016/j.jembe.2020.151456

MLA

Vancouver

Dietz R, Rikardsen A, Biuw M, Kleivane L, Noer C, Stalder D o.a. Migratory and diurnal activity of North Atlantic killer whales (Orcinus orca) off northern Norway. Journal of Experimental Marine Biology and Ecology. 2020 dec;533. 151456. https://doi.org/10.1016/j.jembe.2020.151456

Author

Dietz, Rune ; Rikardsen, Audun ; Biuw, Martin ; Kleivane, Lars ; Noer, Christina ; Stalder, Dominique ; van Beest, Floris ; Riget, Frank Farsø ; Sonne, Christian ; Hansen, Martin ; Strager, Hanne ; Tange Olsen, Morten. / Migratory and diurnal activity of North Atlantic killer whales (Orcinus orca) off northern Norway. I: Journal of Experimental Marine Biology and Ecology. 2020 ; Bind 533.

Bibtex

@article{ff57b494dbd94f9280c053b4dc0f0ba4,
title = "Migratory and diurnal activity of North Atlantic killer whales (Orcinus orca) off northern Norway",
abstract = "Assessing the migratory behaviour of individual and groups of animals is key to understand the function of migration, its evolution, and how it is affected by environment and human activities. In the eastern North Atlantic, killer whales (Orcinus orca) presumably track herring stocks as they migrate between across the region. However, the detailed migratory and foraging behaviour of eastern North Atlantic killer whales is poorly understood. We report on the behaviour of 15 adult male killer whales equipped with Argos satellite transmitters during the winter of 2015–2016 along the coast of Troms, northern Norway. The animals were tracked for 8–104 days (mean: 41 days), during which they migrated 302–7608 Km (mean: 2646 Km). The observed movement of killer whales south to 64.2°N along the Norwegian coast following NSS-herring to their spawning grounds is in agreement with previous studies. However, our study is the first to also document northern migration of three of the Norwegian killer whales into the Barents Sea region towards Novaya Zemlya Island about 900 km from the Norwegian coast approaching 77.0°N. Importantly, using a Bayesian state-space model, we offer new insights on killer whale searching and transit movements, as well as diurnal patterns in swimming speed, preferred foraging habitat and feeding behaviour. The 15 tagged killer whales spend 75.0% of the time in an area restricted search (ARS) mode (range: 55.2–95.2%), 3.9% of the time in a transit mode (range: 0.0–16.1%) and 21.1% (range: 4.8–36.3%) in uncertain mode. The restricted search behaviour peaked at the end of January and beginning of February, after which the killer whales gradually performing transit behaviour as they followed the migrating herring out of the region, or shifted to other prey items.",
keywords = "SATELLITE TRACKING, state-space switching model, diurnal movements, long-distance movement",
author = "Rune Dietz and Audun Rikardsen and Martin Biuw and Lars Kleivane and Christina Noer and Dominique Stalder and {van Beest}, Floris and Riget, {Frank Fars{\o}} and Christian Sonne and Martin Hansen and Hanne Strager and {Tange Olsen}, Morten",
year = "2020",
month = dec,
doi = "10.1016/j.jembe.2020.151456",
language = "English",
volume = "533",
journal = "Journal of Experimental Marine Biology and Ecology",
issn = "0022-0981",
publisher = "Elsevier BV",

}

RIS

TY - JOUR

T1 - Migratory and diurnal activity of North Atlantic killer whales (Orcinus orca) off northern Norway

AU - Dietz, Rune

AU - Rikardsen, Audun

AU - Biuw, Martin

AU - Kleivane, Lars

AU - Noer, Christina

AU - Stalder, Dominique

AU - van Beest, Floris

AU - Riget, Frank Farsø

AU - Sonne, Christian

AU - Hansen, Martin

AU - Strager, Hanne

AU - Tange Olsen, Morten

PY - 2020/12

Y1 - 2020/12

N2 - Assessing the migratory behaviour of individual and groups of animals is key to understand the function of migration, its evolution, and how it is affected by environment and human activities. In the eastern North Atlantic, killer whales (Orcinus orca) presumably track herring stocks as they migrate between across the region. However, the detailed migratory and foraging behaviour of eastern North Atlantic killer whales is poorly understood. We report on the behaviour of 15 adult male killer whales equipped with Argos satellite transmitters during the winter of 2015–2016 along the coast of Troms, northern Norway. The animals were tracked for 8–104 days (mean: 41 days), during which they migrated 302–7608 Km (mean: 2646 Km). The observed movement of killer whales south to 64.2°N along the Norwegian coast following NSS-herring to their spawning grounds is in agreement with previous studies. However, our study is the first to also document northern migration of three of the Norwegian killer whales into the Barents Sea region towards Novaya Zemlya Island about 900 km from the Norwegian coast approaching 77.0°N. Importantly, using a Bayesian state-space model, we offer new insights on killer whale searching and transit movements, as well as diurnal patterns in swimming speed, preferred foraging habitat and feeding behaviour. The 15 tagged killer whales spend 75.0% of the time in an area restricted search (ARS) mode (range: 55.2–95.2%), 3.9% of the time in a transit mode (range: 0.0–16.1%) and 21.1% (range: 4.8–36.3%) in uncertain mode. The restricted search behaviour peaked at the end of January and beginning of February, after which the killer whales gradually performing transit behaviour as they followed the migrating herring out of the region, or shifted to other prey items.

AB - Assessing the migratory behaviour of individual and groups of animals is key to understand the function of migration, its evolution, and how it is affected by environment and human activities. In the eastern North Atlantic, killer whales (Orcinus orca) presumably track herring stocks as they migrate between across the region. However, the detailed migratory and foraging behaviour of eastern North Atlantic killer whales is poorly understood. We report on the behaviour of 15 adult male killer whales equipped with Argos satellite transmitters during the winter of 2015–2016 along the coast of Troms, northern Norway. The animals were tracked for 8–104 days (mean: 41 days), during which they migrated 302–7608 Km (mean: 2646 Km). The observed movement of killer whales south to 64.2°N along the Norwegian coast following NSS-herring to their spawning grounds is in agreement with previous studies. However, our study is the first to also document northern migration of three of the Norwegian killer whales into the Barents Sea region towards Novaya Zemlya Island about 900 km from the Norwegian coast approaching 77.0°N. Importantly, using a Bayesian state-space model, we offer new insights on killer whale searching and transit movements, as well as diurnal patterns in swimming speed, preferred foraging habitat and feeding behaviour. The 15 tagged killer whales spend 75.0% of the time in an area restricted search (ARS) mode (range: 55.2–95.2%), 3.9% of the time in a transit mode (range: 0.0–16.1%) and 21.1% (range: 4.8–36.3%) in uncertain mode. The restricted search behaviour peaked at the end of January and beginning of February, after which the killer whales gradually performing transit behaviour as they followed the migrating herring out of the region, or shifted to other prey items.

KW - SATELLITE TRACKING

KW - state-space switching model

KW - diurnal movements

KW - long-distance movement

UR - http://www.scopus.com/inward/record.url?scp=85091008219&partnerID=8YFLogxK

U2 - 10.1016/j.jembe.2020.151456

DO - 10.1016/j.jembe.2020.151456

M3 - Journal article

VL - 533

JO - Journal of Experimental Marine Biology and Ecology

JF - Journal of Experimental Marine Biology and Ecology

SN - 0022-0981

M1 - 151456

ER -