Year-round acoustic detection of bearded seals (Erignathus barbatus) in the Beaufort Sea relative to changing environmental conditions, 2008–2010

MacIntyre, Kalyn Q.; Stafford, Kathleen M.; Berchok, Catherine L.; Boveng, Peter L.

doi:10.1007/s00300-013-1337-1

Cited by 40 publications

(39 citation statements)

References 47 publications

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“…In contrast, heavy ice conditions with reduced open water have been shown to reduce vocalization rates of roaming males occupying pack ice near shore in Svalbard and Alaska (Van Parijs, 2004;Jensen, 2005). Our results correspond with the finding of MacIntyre et al (2013) that bearded seals offshore in the Beaufort Sea were detected more often in the highest sea ice concentrations. This finding suggests that bearded seals may be overwintering in the offshore environment.…”

Section: Relation Of Ice Seal Acoustic Presence and Sea Icesupporting

confidence: 92%

“…Trills were most common from March through June and present as early as December and January. In a multi-year acoustic study in the Alaskan Beaufort, MacIntyre et al (2013) found that bearded seals called throughout the winter. Our results show similar patterns of presence during winter, increasing through spring.…”

Section: Seasonal Presence and Variation In Acoustic Repertoirementioning

confidence: 99%

“…Seasonal variation in vocalization rates has been observed in ringed seals and bearded seals (Stirling et al, 1983;MacIntyre et al, 2013). Sea ice conditions, predation pressure, and other factors in the offshore environment may affect vocalization rates or types of calls used, so direct comparison of detection rates to those in nearshore areas is difficult.…”

Section: Limitations Of the Studymentioning

confidence: 99%

“…Developments in acoustic monitoring have provided tools for studying marine mammals in polar regions (Stirling et al, 1983;Cleator and Stirling, 1990;Moore et al, 2010;Van Opzeeland et al, 2010;MacIntyre et al, 2013). The availability of long-term acoustic recording devices has enabled investigation of the acoustic behavior and seasonal occurrence of marine mammals in places and at times where ship-and aerial-based or on-ice studies have not been feasible.…”

Section: Introductionmentioning

confidence: 99%

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Ringed, Bearded, and Ribbon Seal Vocalizations North of Barrow, Alaska: Seasonal Presence and Relationship with Sea Ice

Jones¹,

Thayre²,

Roth³

et al. 2014

ARCTIC

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ABSTRACT. The acoustic repertoires of ringed, bearded, and ribbon seals are described, along with their seasonal occurrence and relationship to sea ice concentration. Acoustic recordings were made between September and June over three years (2006 -09) along the continental slope break in the Chukchi Sea, 120 km north-northwest of Barrow, Alaska. Vocalizations of ringed and bearded seals occurred in winter and during periods of 80% -100% ice cover but were mostly absent during open water periods. The presence of ringed and bearded seal calls throughout winter and spring suggests that some portion of their population is overwintering. Analysis of the repertoire of ringed and bearded seal calls shows seasonal variation. Ringed seal calls are primarily barks in winter and yelps in spring, while bearded seal moans increase during spring. Ribbon seal calls were detected only in the fall of 2008 during the open water period. The repertoire of known ribbon seal vocalizations was expanded to include three additional calls, and two stereotyped call sequences were common. Retrospective analyses of ringed seal recordings from 1982 and ribbon seal recordings from 1967 showed a high degree of stability in call repertoire across large spatial and temporal scales.Key words: ringed seal, bearded seal, ribbon seal, Arctic phocid, call repertoire, seasonality, vocalization, sea ice RÉSUMÉ. Le répertoire acoustique des phoques annelés, des phoques barbus et des phoques à bandes sont décrits, de même que leur présence saisonnière et leur rapport avec la concentration de glace de mer. Des enregistrements acoustiques ont été effectués entre septembre et juin sur une période de trois ans (2006 -2009), le long de la rupture de la pente continentale, dans la mer des Tchouktches, à 120 km au nord-nord-ouest de Barrow, en Alaska. Les vocalisations de phoques annelés et de phoques barbus étaient présentes pendant l'hiver et pendant les périodes où la concentration de glace était de 80 % à 100 %, mais elles se faisaient rares pendant les périodes d'eau libre. La présence des cris de phoques annelés et de phoques barbus tout au long de l'hiver et du printemps suggère qu'une partie de leur population hiverne. L'analyse du répertoire de cris de phoques annelés et de phoques barbus indique une variation saisonnière. L'hiver, le cri du phoque annelé prend principalement la forme d'aboiements, tandis que le printemps, il prend la forme de glapissements. Les gémissements du phoque barbu s'intensifient au printemps. Le cri des phoques à bandes n'a été capté qu'à l'automne 2008, pendant la période des eaux libres. Le répertoire des vocalisations connues du phoque à bandes a été élargi pour inclure trois autres cris, bien que deux séquences de cris stéréotypées étaient courantes. L'analyse rétrospective des enregistrements de cris de phoques annelés de 1982 et de phoques à bandes de 1967 a laissé entrevoir une grande stabilité du point de vue du répertoire des cris, et ce, sur de vastes échelles spatiales et temporelles.Mots clés : phoque annelé, pho...

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Section: Relation Of Ice Seal Acoustic Presence and Sea Icesupporting

confidence: 92%

Section: Seasonal Presence and Variation In Acoustic Repertoirementioning

confidence: 99%

Section: Limitations Of the Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ringed, Bearded, and Ribbon Seal Vocalizations North of Barrow, Alaska: Seasonal Presence and Relationship with Sea Ice

Jones¹,

Thayre²,

Roth³

et al. 2014

ARCTIC

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“…Continuous data on species presence are not possible for other survey methods, such as visual surveys, in the Arctic due to sea ice. Indeed, PAM has been used throughout other areas of Arctic North America for monitoring marine mammals, including the Bering Sea (Moore et al 2006;Munger et al 2008;Stafford et al 2010), western Beaufort Sea (Moore et al 2006;Hauser et al 2017a), Chukchi Sea (Delarue et al 2009;Blackwell et al 2012;Hannay et al 2013;Jones et al 2014;Clark et al 2015;Frouin-Mouy et al 2016), and Baffin Bay (FrouinMouy et al 2017;Marcoux et al 2017), and acoustic monitoring has even been used successfully as a tool for studying the distribution of seals under the ice in the winter (Calvert and Stirling 1985;Cleator and Stirling 1990;MacIntyre et al 2013;Jones et al 2014;Frouin-Mouy et al 2016). …”

Section: Introductionmentioning

confidence: 99%

Seasonal patterns in acoustic detections of marine mammals near Sachs Harbour, Northwest Territories

et al. 2017

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The Arctic is changing rapidly, leading to changes in habitat availability and increased anthropogenic disturbance. Information on the distribution of animals is needed as these changes occur. We examine seasonal presence of marine mammals in the western Canadian Arctic near Sachs Harbour, Northwest Territories, using passive acoustic monitoring between 2015 and 2016. We also examined the influence of environmental variables (ice concentration and distance, wind speed) on the presence of these species. Both bowhead whales (Balaena mysticetus) and beluga whales (Delphinapterus leucas) arrived in late April, and belugas departed in mid-August, while bowheads departed in late October. Bearded seal (Erignathus barbatus) vocalizations began in October, peaked from April through June, and stopped in early July. Ringed seals (Pusa hispida) vocalized occasionally in all months, but were generally quiet. Whales migrated in as the ice broke up and migrated out before ice formed in the autumn. Bearded seals started vocalizing as ice formed and stopped once ice was almost gone. Given the importance of sea ice to the timing of migration of whales and vocalization by bearded seals, the trends that we present here may change in the future due to the increasing ice-free season caused by climate change. Our study therefore serves as a baseline with which to monitor future change.Key words: climate change, conservation, passive acoustic monitoring, sea ice.Résumé : L'Arctique change rapidement, menant à des changements dans la disponibilité des habitats et l'augmentation des perturbations anthropiques. Les informations sur la répartition des animaux sont nécessaires à mesure que ces changements surviennent. Nous examinons la présence saisonnière de mammifères marins dans l'ouest de l'Arctique canadien près du havre Sachs, dans les Territoires du Nord-Ouest, en faisant de la surveillance acoustique passive entre 2015 et 2016. Nous avons aussi examiné les effets des variables environnementales (la concentration et la distance de la glace, la vitesse des vents) sur la présence de ces espèces. Tant les baleines boréales (Balaena mysticetus) que les bélugas (Delphinapterus leucas) sont arrivés à la fin avril et les bélugas sont repartis à la miaoût, tandis que les baleines boréales sont reparties à la fin octobre. Les vocalisations de phoques barbus (Erignathus barbatus) ont commencé en octobre, ont atteint un niveau maximal d'avril à juin et se sont arrêtées début juillet. Bien qu'ils aient été généralement silencieux, les phoques annelés (Pusa hispida) ont vocalisé de temps à autre au cours de tous les mois. Les baleines ont migré dans la région lorsque la glace s'est dispersée et ont migré hors

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Pinniped Sounds in the Polar Oceans

Miksis‐Olds

Opzeeland

Parijs

et al. 2016

Modern Acoustics and Signal Processing

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Year-round acoustic detection of bearded seals (Erignathus barbatus) in the Beaufort Sea relative to changing environmental conditions, 2008–2010

Cited by 40 publications

References 47 publications

Ringed, Bearded, and Ribbon Seal Vocalizations North of Barrow, Alaska: Seasonal Presence and Relationship with Sea Ice

Ringed, Bearded, and Ribbon Seal Vocalizations North of Barrow, Alaska: Seasonal Presence and Relationship with Sea Ice

Seasonal patterns in acoustic detections of marine mammals near Sachs Harbour, Northwest Territories

Pinniped Sounds in the Polar Oceans

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