Abundance of megafauna based on OFOS photographic survey during POLARSTERN cruise PS80 (ARK-XXVII/3, IceArc)

• Main Authors: Rybakova, Elena, Kremenetskaia, Antonina, Vedenin, Andrey, Boetius, Antje, Gebruk, Andrey V
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2018
• Subjects: Event label; Date/Time of event; Date/Time of event 2; Latitude of event; Latitude of event 2; Longitude of event; Longitude of event 2; Elevation of event; Elevation of event 2; Ice-station; Caulophacus arcticus; Caulophacus arcticus, standard deviation; Thenea abyssorum; Thenea abyssorum, standard deviation; Cladorhizidae; Cladorhizidae, standard deviation; Porifera; Porifera, standard deviation; Bathyphellia margaritacea; Bathyphellia margaritacea, standard deviation; Oceanactis bursifera; Oceanactis bursifera, standard deviation; Actiniaria; Actiniaria, standard deviation; Cerianthus sp.; Cerianthus sp., standard deviation; Ceriantharia; Ceriantharia, standard deviation; Garveia sp.; Garveia sp., standard deviation; Sertulariidae; Sertulariidae, standard deviation; Abietinaria cf. pulchra; Abietinaria cf. pulchra, standard deviation; Symplectoscyphus tricuspidatus; Symplectoscyphus tricuspidatus, standard deviation; Tubularia regalis; Tubularia regalis, standard deviation; Tubulariidae; Tubulariidae, standard deviation; Hyalopomatus claparedii; Hyalopomatus claparedii, standard deviation; Potamethus malmgreni; Potamethus malmgreni, standard deviation; Macellicephalinae; Macellicephalinae, standard deviation; Bathypolaria carinata; Bathypolaria carinata, standard deviation; Chauvinelia arctica; Chauvinelia arctica, standard deviation; Dinonemertes sp.; Dinonemertes sp., standard deviation; Uniporus sp.; Uniporus sp., standard deviation; Katadesmia kolthoffi; Katadesmia kolthoffi, standard deviation; Mohnia sp.; Mohnia sp., standard deviation; Naticidae; Naticidae, standard deviation; Neogastropoda; Neogastropoda, standard deviation; Eurycope inermis; Eurycope inermis, standard deviation; Munnopsidae; Munnopsidae, standard deviation; Eurythenes gryllus; Eurythenes gryllus, standard deviation; Lysianassoidea; Lysianassoidea, standard deviation; Onisimus leucopis; Onisimus leucopis, standard deviation; Halirages qvadridentatus; Halirages qvadridentatus, standard deviation; Halice sp.; Halice sp., standard deviation; Amphipoda; Amphipoda, standard deviation; Mysidae; Mysidae, standard deviation; Bythocaris curvirostris; Bythocaris curvirostris, standard deviation; Ascorhynchus abyssi; Ascorhynchus abyssi, standard deviation; Eucratea loricata; Eucratea loricata, standard deviation; Elpidia heckeri; Elpidia heckeri, standard deviation; Kolga hyalina; Kolga hyalina, standard deviation; Ophiostriatus striatus; Ophiostriatus striatus, standard deviation; Bathycrinus carpenterii; Bathycrinus carpenterii, standard deviation; Pseudosagitta maxima; Pseudosagitta maxima, standard deviation; Enteropneusta; Enteropneusta, standard deviation; Ocean Floor Observation System; ARK-XXVII/3; Polarstern; amundsen basin; Nansen Basin; Zooplankton
• Online Access: https://dx.doi.org/10.1594/pangaea.896638; https://doi.pangaea.de/10.1594/PANGAEA.896638

A photographic survey was carried out during the expedition ARK-XXVII/3 to the Nansen and Amundsen basins. The seafloor was photographed using a towed Ocean Floor Observation System (OFOS). Nine transects were performed: four in the Nansen Basin between 83-84°N and 18-110°E at depths 3571-4066 m, and five in the Amundsen Basin between 83-89°N and 56-131°E at depths 4041-4384 m. All images were analysed and stored using the image analysis program and database BIIGLE (www.BIIGLE.de). The laser points were used for calculation of the seafloor surface area on images. Visible megafauna was counted and identified to the lowest possible taxonomic level. Taxonomic identifications were made with the assistance of experts. The following taxa/organisms were excluded from statistical analyses: infauna represented only by surface traces, gelatinous zooplankton, small-size organisms (< 1 cm) and organisms that could not be identified at least to the phylum level.