Deep-sea hydrozoans in the western part of the Bering Sea: some hydroids associated with methane seep communities at upper bathyal depths and abyssal hydroids with a description of two new species

Prudkovsky, Andrey; Rybakova, Elena; Sanamyan, N. P.; Sanamyan, Karen

doi:10.1016/j.dsr2.2022.105230

Cited by 4 publications

(2 citation statements)

References 82 publications

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“…Nevertheless, some taxa appear resilient to the presence of suspended sediment. Hydrozoans, for example, are abundant in the carbonate area covered with sediment particles, similar to what was also observed on the Koryak slope at upper bathyal depths (∼660 m) 43 .…”

Section: A Unique Oasis For Faunal Communitiessupporting

confidence: 79%

The discovery of Borealis mud volcano: a natural sanctuary for threatened Arctic species

Panieri,

Argentino,

Savini

et al. 2024

Preprint

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This paper presents the recent discovery of Borealis, a submerged mud volcano systemlocated in the Polar North Atlantic, distinct from the numerous methane seepages previously identified in the region. In situ observations using a remotely operated vehicle (ROV) have captured the expulsion of warm (11.5°C) Neogene sediments and the eruption of methane-dominated fluids from a localised site within a ~500 m diameter crater. The seafloor around Borealis comprises laterally extensive carbonate deposits, suggesting long-lasting diffuse methane migration. Sampling and seafloor images reveal that Borealis hosts unique habitats thriving in the low-oxygen environments around methane seeps. Additionally, the irregualry shaped carbonate structures serve as a natural refuge from bottom trawling as well as a substratum for sessile fauna and function as nursing grounds for threatened fish species. This discovery in the Polar North Atlantic highlights the ecological value of cold seep ecosystems, which play a critical role in biodiversity by acting as sanctuaries for marine species, hence emphasising the importance of their conservation.

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Section: A Unique Oasis For Faunal Communitiessupporting

confidence: 79%

The discovery of Borealis mud volcano: a natural sanctuary for threatened Arctic species

Panieri,

Argentino,

Savini

et al. 2024

Preprint

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“…They follow a life cycle that includes a benthic polyp (hydroid) stage and a pelagic medusan (jellyfish-like) stage [69][70][71][72]. However, the molecular phylogeny of these organisms remains poorly explored [80], which hinders our ability to make complete taxonomic assignments for these groups in seamounts. The low oxygen conditions are not favourable for the growth of hydrozoans, and therefore, the presence of hydrozoans in the eDNA from the summit of seamounts could originate from the sinking organic matter from the oxygenated surface waters.…”

Section: Discussionmentioning

confidence: 99%

Unveiling the Faunal Diversity in the Water Column Adjacent to Two Seamounts in the Deep Arabian Sea Using Environmental DNA Metabarcoding

Kaliyath,

Abdulaziz,

Chekidhenkuzhiyil

et al. 2024

JMSE

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The diversity of organisms inhabiting deep-sea ecosystems, such as seamounts, has hitherto remained under-studied. In this study, we report on the faunal diversity in the water column adjacent to the summit and periphery of two seamounts (SMS2 and SMS3) and an oxygen minimum zone site located away from the seamounts in the southeast Arabian Sea. Environmental DNA (eDNA) in the water column was metabarcoded using the Cytochrome Oxidase C subunit I (COI) gene marker and Oxford Nanopore sequencing technology. Hydrographic conditions revealed that the summits of the seamounts intersect with the core oxygen minimum zone between depths of 300 and 600 m. Comparisons of COI gene sequences with those in available databases, MIDORI and BOLD, indicated the existence of a diverse group of novel organisms in the study area. Crustaceans dominated (75–95%) in the summit and periphery of the SMS2 and the OMZ site, while Cnidaria (56–63%) and Chordata (55%), respectively, dominated the summit and periphery of SMS3. Overall, the current study highlights the broad diversity of organisms living in the water column around the seamounts and underscores the potential of eDNA for exploring them.

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New data on the Caprellidae (Amphipoda: Senticaudata) from the Koryak slope of the Bering Sea with description of Liropus beringi sp. nov.

Kireev,

Golovan

2024

Mar. Biodivers.

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Deep-sea hydrozoans in the western part of the Bering Sea: some hydroids associated with methane seep communities at upper bathyal depths and abyssal hydroids with a description of two new species

Cited by 4 publications

References 82 publications

The discovery of Borealis mud volcano: a natural sanctuary for threatened Arctic species

The discovery of Borealis mud volcano: a natural sanctuary for threatened Arctic species

Unveiling the Faunal Diversity in the Water Column Adjacent to Two Seamounts in the Deep Arabian Sea Using Environmental DNA Metabarcoding

New data on the Caprellidae (Amphipoda: Senticaudata) from the Koryak slope of the Bering Sea with description of Liropus beringi sp. nov.

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