Some like it cold: Temperature-dependent habitat selection by narwhals

Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

Standard

Some like it cold : Temperature-dependent habitat selection by narwhals. / Heide-Jørgensen, Mads Peter; Blackwell, Susanna B.; Williams, Terrie M.; Sinding, Mikkel Holger S.; Skovrind, Mikkel; Tervo, Outi M.; Garde, Eva; Hansen, Rikke G.; Nielsen, Nynne H.; Ngô, Manh Cuong; Ditlevsen, Susanne.

I: Ecology and Evolution, Bind 10, Nr. 15, 2020, s. 8073-8090.

Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

Harvard

Heide-Jørgensen, MP, Blackwell, SB, Williams, TM, Sinding, MHS, Skovrind, M, Tervo, OM, Garde, E, Hansen, RG, Nielsen, NH, Ngô, MC & Ditlevsen, S 2020, 'Some like it cold: Temperature-dependent habitat selection by narwhals', Ecology and Evolution, bind 10, nr. 15, s. 8073-8090. https://doi.org/10.1002/ece3.6464

APA

Heide-Jørgensen, M. P., Blackwell, S. B., Williams, T. M., Sinding, M. H. S., Skovrind, M., Tervo, O. M., Garde, E., Hansen, R. G., Nielsen, N. H., Ngô, M. C., & Ditlevsen, S. (2020). Some like it cold: Temperature-dependent habitat selection by narwhals. Ecology and Evolution, 10(15), 8073-8090. https://doi.org/10.1002/ece3.6464

Vancouver

Heide-Jørgensen MP, Blackwell SB, Williams TM, Sinding MHS, Skovrind M, Tervo OM o.a. Some like it cold: Temperature-dependent habitat selection by narwhals. Ecology and Evolution. 2020;10(15):8073-8090. https://doi.org/10.1002/ece3.6464

Author

Heide-Jørgensen, Mads Peter ; Blackwell, Susanna B. ; Williams, Terrie M. ; Sinding, Mikkel Holger S. ; Skovrind, Mikkel ; Tervo, Outi M. ; Garde, Eva ; Hansen, Rikke G. ; Nielsen, Nynne H. ; Ngô, Manh Cuong ; Ditlevsen, Susanne. / Some like it cold : Temperature-dependent habitat selection by narwhals. I: Ecology and Evolution. 2020 ; Bind 10, Nr. 15. s. 8073-8090.

Bibtex

@article{0f616ad2d53b4ec6a0e70eff9b1dc759,
title = "Some like it cold: Temperature-dependent habitat selection by narwhals",
abstract = "The narwhal (Monodon monoceros) is a high-Arctic species inhabiting areas that are experiencing increases in sea temperatures, which together with reduction in sea ice are expected to modify the niches of several Arctic marine apex predators. The Scoresby Sound fjord complex in East Greenland is the summer residence for an isolated population of narwhals. The movements of 12 whales instrumented with Fastloc-GPS transmitters were studied during summer in Scoresby Sound and at their offshore winter ground in 2017–2019. An additional four narwhals provided detailed hydrographic profiles on both summer and winter grounds. Data on diving of the whales were obtained from 20 satellite-linked time-depth recorders and 16 Acousonde{\texttrademark} recorders that also provided information on the temperature and depth of buzzes. In summer, the foraging whales targeted depths between 300 and 850 m where the preferred areas visited by the whales had temperatures ranging between 0.6 and 1.5°C (mean = 1.1°C, SD = 0.22). The highest probability of buzzing activity during summer was at a temperature of 0.7°C and at depths > 300 m. The whales targeted similar depths at their offshore winter ground where the temperature was slightly higher (range: 0.7–1.7°C, mean = 1.3°C, SD = 0.29). Both the probability of buzzing events and the spatial distribution of the whales in both seasons demonstrated a preferential selection of cold water. This was particularly pronounced in winter where cold coastal water was selected and warm Atlantic water farther offshore was avoided. It is unknown if the small temperature niche of whales while feeding is because prey is concentrated at these temperature gradients and is easier to capture at low temperatures, or because there are limitations in the thermoregulation of the whales. In any case, the small niche requirements together with their strong site fidelity emphasize the sensitivity of narwhals to changes in the thermal characteristics of their habitats.",
keywords = "buzzing, deep diving, East Greenland, high Arctic, oceanography, satellite tracking, thermal homeostasis",
author = "Heide-J{\o}rgensen, {Mads Peter} and Blackwell, {Susanna B.} and Williams, {Terrie M.} and Sinding, {Mikkel Holger S.} and Mikkel Skovrind and Tervo, {Outi M.} and Eva Garde and Hansen, {Rikke G.} and Nielsen, {Nynne H.} and Ng{\^o}, {Manh Cuong} and Susanne Ditlevsen",
year = "2020",
doi = "10.1002/ece3.6464",
language = "English",
volume = "10",
pages = "8073--8090",
journal = "Ecology and Evolution",
issn = "2045-7758",
publisher = "Wiley",
number = "15",

}

RIS

TY - JOUR

T1 - Some like it cold

T2 - Temperature-dependent habitat selection by narwhals

AU - Heide-Jørgensen, Mads Peter

AU - Blackwell, Susanna B.

AU - Williams, Terrie M.

AU - Sinding, Mikkel Holger S.

AU - Skovrind, Mikkel

AU - Tervo, Outi M.

AU - Garde, Eva

AU - Hansen, Rikke G.

AU - Nielsen, Nynne H.

AU - Ngô, Manh Cuong

AU - Ditlevsen, Susanne

PY - 2020

Y1 - 2020

N2 - The narwhal (Monodon monoceros) is a high-Arctic species inhabiting areas that are experiencing increases in sea temperatures, which together with reduction in sea ice are expected to modify the niches of several Arctic marine apex predators. The Scoresby Sound fjord complex in East Greenland is the summer residence for an isolated population of narwhals. The movements of 12 whales instrumented with Fastloc-GPS transmitters were studied during summer in Scoresby Sound and at their offshore winter ground in 2017–2019. An additional four narwhals provided detailed hydrographic profiles on both summer and winter grounds. Data on diving of the whales were obtained from 20 satellite-linked time-depth recorders and 16 Acousonde™ recorders that also provided information on the temperature and depth of buzzes. In summer, the foraging whales targeted depths between 300 and 850 m where the preferred areas visited by the whales had temperatures ranging between 0.6 and 1.5°C (mean = 1.1°C, SD = 0.22). The highest probability of buzzing activity during summer was at a temperature of 0.7°C and at depths > 300 m. The whales targeted similar depths at their offshore winter ground where the temperature was slightly higher (range: 0.7–1.7°C, mean = 1.3°C, SD = 0.29). Both the probability of buzzing events and the spatial distribution of the whales in both seasons demonstrated a preferential selection of cold water. This was particularly pronounced in winter where cold coastal water was selected and warm Atlantic water farther offshore was avoided. It is unknown if the small temperature niche of whales while feeding is because prey is concentrated at these temperature gradients and is easier to capture at low temperatures, or because there are limitations in the thermoregulation of the whales. In any case, the small niche requirements together with their strong site fidelity emphasize the sensitivity of narwhals to changes in the thermal characteristics of their habitats.

AB - The narwhal (Monodon monoceros) is a high-Arctic species inhabiting areas that are experiencing increases in sea temperatures, which together with reduction in sea ice are expected to modify the niches of several Arctic marine apex predators. The Scoresby Sound fjord complex in East Greenland is the summer residence for an isolated population of narwhals. The movements of 12 whales instrumented with Fastloc-GPS transmitters were studied during summer in Scoresby Sound and at their offshore winter ground in 2017–2019. An additional four narwhals provided detailed hydrographic profiles on both summer and winter grounds. Data on diving of the whales were obtained from 20 satellite-linked time-depth recorders and 16 Acousonde™ recorders that also provided information on the temperature and depth of buzzes. In summer, the foraging whales targeted depths between 300 and 850 m where the preferred areas visited by the whales had temperatures ranging between 0.6 and 1.5°C (mean = 1.1°C, SD = 0.22). The highest probability of buzzing activity during summer was at a temperature of 0.7°C and at depths > 300 m. The whales targeted similar depths at their offshore winter ground where the temperature was slightly higher (range: 0.7–1.7°C, mean = 1.3°C, SD = 0.29). Both the probability of buzzing events and the spatial distribution of the whales in both seasons demonstrated a preferential selection of cold water. This was particularly pronounced in winter where cold coastal water was selected and warm Atlantic water farther offshore was avoided. It is unknown if the small temperature niche of whales while feeding is because prey is concentrated at these temperature gradients and is easier to capture at low temperatures, or because there are limitations in the thermoregulation of the whales. In any case, the small niche requirements together with their strong site fidelity emphasize the sensitivity of narwhals to changes in the thermal characteristics of their habitats.

KW - buzzing

KW - deep diving

KW - East Greenland

KW - high Arctic

KW - oceanography

KW - satellite tracking

KW - thermal homeostasis

U2 - 10.1002/ece3.6464

DO - 10.1002/ece3.6464

M3 - Journal article

C2 - 32788962

AN - SCOPUS:85088294660

VL - 10

SP - 8073

EP - 8090

JO - Ecology and Evolution

JF - Ecology and Evolution

SN - 2045-7758

IS - 15

ER -

ID: 249164254