The Biochemical Composition and Caloric Content of the Macrozoobenthos of the Western Kamchatka Shelf

Горбатенко, К. М.; Nadtochy, V. A.

doi:10.1134/s1063074018040028

Cited by 1 publication

(1 citation statement)

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“…Some typical deep-sea biota were detected, such as freeliving nematodes (Oxystominidae, 0.1%), albeit only with a few reads (Supplementary data file 2). The majority of resampled reads were assigned to families, which potentially represent the benthic composition of the shelf and upper continental slope 64,65 , such as bivalves (Pectinidae, 22.7% and Mytilidae, 1.5%), starfish (Asteriidae, 14.1%), priapulid worms (Priapulidae, 6.9%), corals (Nephtheidae,1%; Pocilloporidae, 2.8%), and sea urchins (Strongylocentrotidae, 4.5%) (Fig. 4).…”

Section: Benthic Sedadna Composition and Temporal Patternsmentioning

confidence: 99%

Marine ecosystem shifts with deglacial sea-ice loss inferred from ancient DNA shotgun sequencing

et al. 2023

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Sea ice is a key factor for the functioning and services provided by polar marine ecosystems. However, ecosystem responses to sea-ice loss are largely unknown because time-series data are lacking. Here, we use shotgun metagenomics of marine sedimentary ancient DNA off Kamchatka (Western Bering Sea) covering the last ~20,000 years. We traced shifts from a sea ice-adapted late-glacial ecosystem, characterized by diatoms, copepods, and codfish to an ice-free Holocene characterized by cyanobacteria, salmon, and herring. By providing information about marine ecosystem dynamics across a broad taxonomic spectrum, our data show that ancient DNA will be an important new tool in identifying long-term ecosystem responses to climate transitions for improvements of ocean and cryosphere risk assessments. We conclude that continuing sea-ice decline on the northern Bering Sea shelf might impact on carbon export and disrupt benthic food supply and could allow for a northward expansion of salmon and Pacific herring.

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Section: Benthic Sedadna Composition and Temporal Patternsmentioning

confidence: 99%