Megafauna at the Haakon Mosby mud volcano (the Barents Sea) based on image analysis.
Citation
Rybakova E, Galkin S, Soltwedel T, Bergmann M, Gebruk A (2021). Megafauna at the Haakon Mosby mud volcano (the Barents Sea) based on image analysis.. Shirshov Institute of Oceanology, Russian Academy of Sciences. Sampling event dataset https://doi.org/10.15468/gwpvac accessed via GBIF.org on 2022-05-28.Description
A photographic survey was carried out during the expedition ARK-XVIII/1b of the research icebreaker R/V Polarstern in August 2002 to the Haakon Mosby Mud Volcano (HMMV). Different habitats inside the volcano caldera and outside were photographed using a towed camera system (Ocean Floor Observation System, OFOS). Four OFOS transects were carried out in total: three across the caldera (I-III) and one outside the caldera (IV) to the south of volcano. The length of each transect was ca. 2 km. 1045 images were used for statistical analyses. Among the analysed images, 894 were taken along the three transects across the caldera and 151 images along the transect outside the volcano. All images within the volcano were taken in the soft-sediment environment. Part of images along the transect outside the volcano were taken on hard substrata (boulders, carbonate rocks and crust). Those images were excluded from the analysis because the aim of our study was to compare fauna from similar sediment environments. All visible nonsymbiotrophic megafauna were counted and identified to the lowest possible taxonomic level.Density was not determined for the two pogonophorans. For these and for bacterial mats we estimated the degree of seafloor area coverage using the laser scale. Identification and ground-truthing was aided by previously collected material and samples taken outside the caldera using an Agassiz trawl and inside the caldera using a box corer, ROV, trap lander and baited traps.Taxonomic Coverages
Geographic Coverages
Bibliographic Citations
Contacts
Elena Rybakovaoriginator
position: researcher
Shirshov Institute of Oceanology, Russian Academy of Sciences
Moscow
RU
email: gorolen@mail.ru
Sergey Galkin
originator
position: researcher
Shirshov Institute of Oceanology, Russian Academy of Sciences
Moscow
RU
email: galkin@ocean.ru
Thomas Soltwedel
originator
position: researcher
Alfred Wegener Institute for Polar and Marine Research
Bremerhaven
DE
Melanie Bergmann
originator
position: researcher
Alfred Wegener Institute for Polar and Marine Research
Bremerhaven
DE
Andrey Gebruk
originator
position: Deputy Director
Shirshov Institute of Oceanology, Russian Academy of Sciences
Moscow
RU
Elena Rybakova
metadata author
position: researcher
Shirshov Institute of Oceanology, Russian Academy of Sciences
Moscow
RU
email: gorolen@mail.ru
Antonina Kremenetskaya
user
position: researcher
Shirshov Institute of Oceanology, Russian Academy of Sciences
email: gbif@ocean.ru
Elena Rybakova
administrative point of contact
position: researcher
Shirshov Institute of Oceanology, Russian Academy of Sciences
Moscow
RU
email: gorolen@mail.ru