Hydrographic variability over the northeastern Chukchi Sea shelf in summer-fall 2008–2010

Weingartner, Thomas J.; Dobbins, Elizabeth L.; Danielson, Seth L.; Winsor, Peter; Potter, Rachel Augustine; Statscewich, Hank

doi:10.1016/j.csr.2013.03.012

Cited by 96 publications

(52 citation statements)

References 28 publications

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“…The Chukchi Sea is a productive (Grebmeier et al 2006), shallow system that is supplemented by nutrients (Weingartner 1997;Weingartner et al 2013) and fauna (Walsh et al 1989) of Bering Sea origin. The high local production, external nutrient input, and small-scale oceanographic processes drive the strong delivery of carbon to the benthos in the Chukchi Sea (Grebmeier et al 2006), which creates positive growth conditions for benthic macrofauna (Feder et al 1994a;Blanchard et al 2013;Blanchard and Feder 2014).…”

Section: Introductionmentioning

confidence: 99%

Food habits of Arctic staghorn sculpin (Gymnocanthus tricuspis) and shorthorn sculpin (Myoxocephalus scorpius) in the northeastern Chukchi and western Beaufort Seas

Gray

Norcross

Beaudreau

et al. 2017

Deep Sea Research Part II: Topical Studies in Oceanography

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Section: Introductionmentioning

confidence: 99%

Food habits of Arctic staghorn sculpin (Gymnocanthus tricuspis) and shorthorn sculpin (Myoxocephalus scorpius) in the northeastern Chukchi and western Beaufort Seas

Gray

Norcross

Beaudreau

et al. 2017

Deep Sea Research Part II: Topical Studies in Oceanography

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“…These northward-flowing water masses encounter cold, hyper-saline 128 bottom water and fresh meltwater from arctic pack ice, which can strongly influence water 129 column stratification (Weingartner et al, 2013) and the formation of thermohaline fronts that Diomede and Little Diomede islands (USFWS, 2014). A colony with ~ 51 000 seabirds is 159 located on an island at the head of Kotzebue Sound (Fig.…”

Section: Introductionmentioning

confidence: 99%

Seasonal spatial patterns in seabird and marine mammal distribution in the eastern Chukchi and western Beaufort seas: Identifying biologically important pelagic areas

Kuletz

Ferguson

Hurley

et al. 2015

Progress in Oceanography

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17The Chukchi and Beaufort seas are undergoing rapid climate change and increased human 18 activity. Conservation efforts for upper trophic level predators such as seabirds and marine 19 mammals require information on species' distributions and identification of important marine 20 areas. Here we describe broad-scale distributions of seabirds and marine mammals. We 21 examined spatial patterns of relative abundance of seabirds and marine mammals in the eastern 22 Chukchi and western Beaufort seas during summer (. We summarized 49 206 km of shipboard surveys for seabirds 24 and 183 157 km of aerial surveys for marine mammals into a grid of 40-km X 40-km cells. We 25 used Getis-Ord Gi* hotspot analysis to test for cells with higher relative abundance than 26 expected when compared to all cells within the study area. We identified cells representing 27 Kuletz et al_Seabird and Marine Mammal Hotspots in Pacific Arctic_2.27.15 2 single-species and taxonomic group hotspots, cells representing hotspots for multiple species, 28 and cells representing hotspots for both seabirds and marine mammals. The locations of hotspots 29 varied among species but often were located near underwater canyons or over continental shelf 30 features and slopes. Hotspots for seabirds, walrus, and gray whales occurred primarily in the 31 Chukchi Sea. Hotspots for bowhead whales and other pinnipeds (i.e., seals) occurred near 32 Barrow Canyon and along the Beaufort Sea shelf and slope. Hotspots for belugas occurred in 33 both the Chukchi and Beaufort seas. There were three hotspots shared by both seabirds and 34 marine mammals in summer: off Wainwright in the eastern Chukchi Sea, south of Hanna Shoal, 35 and at the mouth of Barrow Canyon. In fall, the only identified shared hotspot occurred at the 36 mouth of Barrow Canyon. Shared hotspots are characterized by strong fronts caused by 37 upwelling and currents, and these areas can have high densities of euphausiids in summer and 38 fall. Due to the high relative abundance of animals and diversity of taxa, these sites are clearly 39 important areas of congregation for seabirds and marine mammals that should be prioritized in 40 the development of management and conservation plans.41 42

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“…West of the ACC mean currents in summer are generally 65 cm s À1 as Bering Sea water gradually flushes the shelf of waters stratified due to ice melt (Weingartner et al, 2013). The ACC flows along the Alaskan coast toward Barrow Canyon (Mountain et al, 1976;Paquette and Bourke, 1981;Weingartner et al, 2013) where its entrance into the Arctic varies depending on the wind (Okkonen et al, 2009). Upon reaching the edge of the shelf some Pacific Water is also channeled eastward as a shelfbreak jet, although in recent years much of this water has apparently been advected directly into Canada Basin (Brugler et al, 2014).…”

Section: Ocean Currents and Freshwater Pathwaysmentioning

confidence: 99%

A decade of environmental change in the Pacific Arctic region

Wood

Bond

Danielson

et al. 2015

Progress in Oceanography

126

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Hydrographic variability over the northeastern Chukchi Sea shelf in summer-fall 2008–2010

Cited by 96 publications

References 28 publications

Food habits of Arctic staghorn sculpin (Gymnocanthus tricuspis) and shorthorn sculpin (Myoxocephalus scorpius) in the northeastern Chukchi and western Beaufort Seas

Food habits of Arctic staghorn sculpin (Gymnocanthus tricuspis) and shorthorn sculpin (Myoxocephalus scorpius) in the northeastern Chukchi and western Beaufort Seas

Seasonal spatial patterns in seabird and marine mammal distribution in the eastern Chukchi and western Beaufort seas: Identifying biologically important pelagic areas

A decade of environmental change in the Pacific Arctic region

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