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Beluga whales in the western Beaufort Sea: current state of knowledge on timing, distribution, habitat use and environmental drivers

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Beluga whales in the western Beaufort Sea : current state of knowledge on timing, distribution, habitat use and environmental drivers. / Stafford, Kathleen M.; Ferguson, Megan C.; Hauser, Donna D. W.; Okkonen, Stephen R.; Berchok, Catherine L.; Citta, John J.; Clarke, Janet T.; Garland, Ellen C.; Jones, Joshua; Suydam, Robert S.

In: Deep Sea Research Part II: Topical Studies in Oceanography, Vol. 152, 06.2018, p. 182-194.

Research output: Contribution to journalArticle

Harvard

Stafford, KM, Ferguson, MC, Hauser, DDW, Okkonen, SR, Berchok, CL, Citta, JJ, Clarke, JT, Garland, EC, Jones, J & Suydam, RS 2018, 'Beluga whales in the western Beaufort Sea: current state of knowledge on timing, distribution, habitat use and environmental drivers' Deep Sea Research Part II: Topical Studies in Oceanography, vol. 152, pp. 182-194. https://doi.org/10.1016/j.dsr2.2016.11.017

APA

Stafford, K. M., Ferguson, M. C., Hauser, D. D. W., Okkonen, S. R., Berchok, C. L., Citta, J. J., ... Suydam, R. S. (2018). Beluga whales in the western Beaufort Sea: current state of knowledge on timing, distribution, habitat use and environmental drivers. Deep Sea Research Part II: Topical Studies in Oceanography, 152, 182-194. https://doi.org/10.1016/j.dsr2.2016.11.017

Vancouver

Stafford KM, Ferguson MC, Hauser DDW, Okkonen SR, Berchok CL, Citta JJ et al. Beluga whales in the western Beaufort Sea: current state of knowledge on timing, distribution, habitat use and environmental drivers. Deep Sea Research Part II: Topical Studies in Oceanography. 2018 Jun;152:182-194. https://doi.org/10.1016/j.dsr2.2016.11.017

Author

Stafford, Kathleen M. ; Ferguson, Megan C. ; Hauser, Donna D. W. ; Okkonen, Stephen R. ; Berchok, Catherine L. ; Citta, John J. ; Clarke, Janet T. ; Garland, Ellen C. ; Jones, Joshua ; Suydam, Robert S. / Beluga whales in the western Beaufort Sea : current state of knowledge on timing, distribution, habitat use and environmental drivers. In: Deep Sea Research Part II: Topical Studies in Oceanography. 2018 ; Vol. 152. pp. 182-194.

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@article{e0bea76a92f447d9930e8b3b8c9f1e70,
title = "Beluga whales in the western Beaufort Sea: current state of knowledge on timing, distribution, habitat use and environmental drivers",
abstract = "The seasonal and geographic patterns in the distribution, residency, and density of two populations (Chukchi and Beaufort) of beluga whales (Delphinapterus leucas) were examined using data from aerial surveys, passive acoustic recordings, and satellite telemetry to better understand this arctic species in the oceanographically complex and changing western Beaufort Sea. An aerial survey data-based model of beluga density highlights the Beaufort Sea slope as important habitat for belugas, with westerly regions becoming more important as summer progresses into fall. The Barrow Canyon region always had the highest relative densities of belugas from July-October. Passive acoustic data showed that beluga whales occupied the Beaufort slope and Beaufort Sea from early April until early November and passed each hydrophone location in three broad pulses during this time. These pulses likely represent the migrations of the two beluga populations: the first pulse in spring being from Beaufort animals, the second spring pulse Chukchi belugas, with the third, fall pulse a combination of both populations. Core-use and home range analyses of satellite-tagged belugas showed similar use of habitats as the aerial survey data, but also showed that it is predominantly the Chukchi population of belugas that uses the western Beaufort, with the exception of September when both populations overlap. Finally, an examination of these beluga datasets in the context of wind-driven changes in the local currents and water masses suggests that belugas are highly capable of adapting to oceanographic changes that may drive the distribution of their prey.",
keywords = "Beluga whale, Delphinapterus leucas, Alaska, Beaufort Sea, Aerial surveys, Satellite telemetry, Passive acoustic monitoring",
author = "Stafford, {Kathleen M.} and Ferguson, {Megan C.} and Hauser, {Donna D. W.} and Okkonen, {Stephen R.} and Berchok, {Catherine L.} and Citta, {John J.} and Clarke, {Janet T.} and Garland, {Ellen C.} and Joshua Jones and Suydam, {Robert S.}",
note = "ECG was supported by a National Research Council-National Academy of Sciences Postdoctoral Fellowship.",
year = "2018",
month = "6",
doi = "10.1016/j.dsr2.2016.11.017",
language = "English",
volume = "152",
pages = "182--194",
journal = "Deep Sea Research Part II: Topical Studies in Oceanography",
issn = "0967-0645",
publisher = "PERGAMON-ELSEVIER SCIENCE LTD",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Beluga whales in the western Beaufort Sea

T2 - Deep Sea Research Part II: Topical Studies in Oceanography

AU - Stafford, Kathleen M.

AU - Ferguson, Megan C.

AU - Hauser, Donna D. W.

AU - Okkonen, Stephen R.

AU - Berchok, Catherine L.

AU - Citta, John J.

AU - Clarke, Janet T.

AU - Garland, Ellen C.

AU - Jones, Joshua

AU - Suydam, Robert S.

N1 - ECG was supported by a National Research Council-National Academy of Sciences Postdoctoral Fellowship.

PY - 2018/6

Y1 - 2018/6

N2 - The seasonal and geographic patterns in the distribution, residency, and density of two populations (Chukchi and Beaufort) of beluga whales (Delphinapterus leucas) were examined using data from aerial surveys, passive acoustic recordings, and satellite telemetry to better understand this arctic species in the oceanographically complex and changing western Beaufort Sea. An aerial survey data-based model of beluga density highlights the Beaufort Sea slope as important habitat for belugas, with westerly regions becoming more important as summer progresses into fall. The Barrow Canyon region always had the highest relative densities of belugas from July-October. Passive acoustic data showed that beluga whales occupied the Beaufort slope and Beaufort Sea from early April until early November and passed each hydrophone location in three broad pulses during this time. These pulses likely represent the migrations of the two beluga populations: the first pulse in spring being from Beaufort animals, the second spring pulse Chukchi belugas, with the third, fall pulse a combination of both populations. Core-use and home range analyses of satellite-tagged belugas showed similar use of habitats as the aerial survey data, but also showed that it is predominantly the Chukchi population of belugas that uses the western Beaufort, with the exception of September when both populations overlap. Finally, an examination of these beluga datasets in the context of wind-driven changes in the local currents and water masses suggests that belugas are highly capable of adapting to oceanographic changes that may drive the distribution of their prey.

AB - The seasonal and geographic patterns in the distribution, residency, and density of two populations (Chukchi and Beaufort) of beluga whales (Delphinapterus leucas) were examined using data from aerial surveys, passive acoustic recordings, and satellite telemetry to better understand this arctic species in the oceanographically complex and changing western Beaufort Sea. An aerial survey data-based model of beluga density highlights the Beaufort Sea slope as important habitat for belugas, with westerly regions becoming more important as summer progresses into fall. The Barrow Canyon region always had the highest relative densities of belugas from July-October. Passive acoustic data showed that beluga whales occupied the Beaufort slope and Beaufort Sea from early April until early November and passed each hydrophone location in three broad pulses during this time. These pulses likely represent the migrations of the two beluga populations: the first pulse in spring being from Beaufort animals, the second spring pulse Chukchi belugas, with the third, fall pulse a combination of both populations. Core-use and home range analyses of satellite-tagged belugas showed similar use of habitats as the aerial survey data, but also showed that it is predominantly the Chukchi population of belugas that uses the western Beaufort, with the exception of September when both populations overlap. Finally, an examination of these beluga datasets in the context of wind-driven changes in the local currents and water masses suggests that belugas are highly capable of adapting to oceanographic changes that may drive the distribution of their prey.

KW - Beluga whale

KW - Delphinapterus leucas

KW - Alaska

KW - Beaufort Sea

KW - Aerial surveys

KW - Satellite telemetry

KW - Passive acoustic monitoring

U2 - 10.1016/j.dsr2.2016.11.017

DO - 10.1016/j.dsr2.2016.11.017

M3 - Article

VL - 152

SP - 182

EP - 194

JO - Deep Sea Research Part II: Topical Studies in Oceanography

JF - Deep Sea Research Part II: Topical Studies in Oceanography

SN - 0967-0645

ER -

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ID: 248117180