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首页> 美国政府科技报告 >Pinniped Movements and Foraging: Seasonal Movements, Habitat Selection, Foraging and Haul-out Behavior of Adult Bearded Seals in the Chukchi Sea.
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Pinniped Movements and Foraging: Seasonal Movements, Habitat Selection, Foraging and Haul-out Behavior of Adult Bearded Seals in the Chukchi Sea.

机译：pinniped运动和觅食：楚科奇海成年胡子海豹的季节性运动，栖息地选择，觅食和拖运行为。

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Bearded seals (Erignathus barbatus) are one of the most important subsistence resources for the indigenous people of coastal northern and western Alaska, as well as key components of Arctic marine ecosystems, yet relatively little about their abundance, seasonal distribution, migrations, or foraging behaviors has been documented scientifically. Ice-associated seal populations may be negatively impacted by offshore oil and gas development as well as by climate change. Our ability to predict impacts, however, is limited by inadequate knowledge of seal population structure and foraging ecology. By working cooperatively with Alaska Native subsistence hunters we developed methods for livecapturing bearded seals in the Chukchi Sea using nets set in the shallow coastal waters where bearded seals were foraging. Capture efforts were based out of Kotzebue and various locations in the North Slope Borough from Wainwright to Barrow in June and July from 2009 to 2012. In all, 7 seals were caught (2 adults and 5 sub-adults; 4 males and three females; ranging in length and weight from 159 cm and 116 kg to 216 cm and 253 kg), all from Kotzebue Sound. Each seal was sampled for health and condition and released with two different types of satellite-linked, geo-locating data recorders (SDRs): the SPOT SDR, attached to a rear flipper, provided information on the timing of hauling out and on the seal's location for up to three years; the MK10 SDR, glued to the top of a seal's head, provided the same information as the SPOT SDR and also provided data on the timing and depths of dives, for up to ten months.

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