Zooplankton Composition and Trophic Status of Aquatic Species in the Laptev and East Siberian Seas

Горбатенко, К. М.; Kiyashko, S. I.

doi:10.1134/s0001437019060055

Cited by 7 publications

(2 citation statements)

References 17 publications

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“…In addition, there is evidence that E. gaimardii fully retracts into brine channels of ice during stable salinity conditions (Nygård et al 2007). In the East Siberian and Laptev seas, E. gaimardii has been documented as an impor- tant prey item for polar cod (Gorbatenko & Kiyashko 2019). Furthermore, barcodes of barnacles from the genera Balanus and Semibalanus were observed in almost 40% of the investigated stomachs.…”

Section: Extending the Prey Spectrum Of Polar Codmentioning

confidence: 96%

Comparative visual and DNA-based diet assessment extends the prey spectrum of polar cod Boreogadus saida

Maes

Schaafsma²,

Christiansen

et al. 2022

Mar. Ecol. Prog. Ser.

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The Arctic marine ecosystem is changing fast due to climate change, emphasizing the need for solid ecological baselines and monitoring. The polar cod Boreogadus saida functions as a key species in the Arctic marine food web. We investigated the stomach contents of polar cod from the northern Barents Sea using DNA metabarcoding with the mitochondrial cytochrome c oxidase I gene in parallel with classical visual analysis. Arctic amphipods and krill dominated the diet in both methods. Yet, metabarcoding allowed for the identification of digested and unidentifiable prey and provided higher taxonomic resolution, revealing new and undiscovered prey items of polar cod in the area. Furthermore, molecular results suggest a higher importance of barnacles and fish (presumably eggs and pelagic larvae) in the diet than previously recorded. Parasites and, in 6 cases, other prey items were only visually identified, demonstrating the complementary nature of both approaches. The presence of temperate and boreal prey species such as northern krill and (early life stages of) European flounder and European plaice illustrates the advection of boreal taxa into the polar region or may be indicative of ongoing borealisation in the Barents Sea. We show that a combination of visual analysis and metabarcoding provides complementary and semi-quantitative dietary information and integrative insights to monitor changing marine food webs.

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Section: Extending the Prey Spectrum Of Polar Codmentioning

confidence: 96%

Comparative visual and DNA-based diet assessment extends the prey spectrum of polar cod Boreogadus saida

Maes

Schaafsma²,

Christiansen

et al. 2022

Mar. Ecol. Prog. Ser.

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“…Acoustic measurements were made from August 21, 2017 to August 13, 2018 on the East Siberian Shelf (74° 37.332′N, 174° 56.382′E) in the ESS (Figure 1b). The ESS is a marginal sea of the Arctic Ocean with relatively shallow water reaching an average depth of ∼54 m (Gorbatenko & Kiyashko, 2019). An autonomous passive acoustic recorder (AURAL‐M2, Multi‐Electronique Inc.) was moored at a depth of 52 m, corresponding to 10 m above the seafloor.…”

Section: Introductionmentioning

confidence: 99%

Effects of Geophony and Anthrophony on the Underwater Acoustic Environment in the East Siberian Sea, Arctic Ocean

Han

Joo²,

Son

et al. 2021

Geophysical Research Letters

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As Arctic warming accelerates, the underwater acoustic environment in the Arctic Ocean is rapidly changing. We present the first results of passive acoustic monitoring in the marginal ice zone of the East Siberian Sea (ESS). A high sea ice concentration (SIC) and seasonal variations in ice cover make the ESS an ideal region to verify how ambient sound levels respond to natural physical processes and anthropogenic activities during summer. Our observations show that the sound level in the ESS exhibits a strong negative correlation with SIC, and the sound level in September, which was higher than that in other months, was 16 dB higher than the annual average. This increase resulted from geophony and anthrophony with the reduction in the SIC, and sound level increased by 13 dB without anthrophony. Our results indicate that ambient sound level in the Arctic Ocean may increase as climate change accelerates sea ice melting.

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Polymorphism of mtDNA gene Cyt b of the Chukchi Sea polar cod, Boreogadus saida (Gadidae, Gadiformes)

Emelyanova

Grigorov²,

Орлов³

et al. 2022

Deep Sea Research Part II: Topical Studies in Oceanography

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Zooplankton Composition and Trophic Status of Aquatic Species in the Laptev and East Siberian Seas

Cited by 7 publications

References 17 publications

Comparative visual and DNA-based diet assessment extends the prey spectrum of polar cod Boreogadus saida

Comparative visual and DNA-based diet assessment extends the prey spectrum of polar cod Boreogadus saida

Effects of Geophony and Anthrophony on the Underwater Acoustic Environment in the East Siberian Sea, Arctic Ocean

Polymorphism of mtDNA gene Cyt b of the Chukchi Sea polar cod, Boreogadus saida (Gadidae, Gadiformes)

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