Vertical distribution of macrobenthos in sediment column in north Barents Sea - raw data of the Transarctica-2019 expedition ...

• Main Authors: Syomin, Vitaly, Zimina, Olga, Nekhaev, Ivan, Krylov, Alexey, Bogin, Victor, Zakharov, Vladimir
• Format: Dataset
• Language: unknown
• Published: SEANOE 2019
• Subjects: zoobenthos; vertical distribution; sediment properties; community structure; Arctic; North Barents Sea; Franz Victoria Trough; Barents Sea; Franz Joseph Land
• Online Access: https://dx.doi.org/10.17882/97988; https://www.seanoe.org/data/00868/97988/

Vertical distribution of macrobenthos in sediments remains poorly studied; data from higher latitudes are especially scarce. At the same time, it is believed to contain important information about communities that should not be neglected. Hence, our main objectives are to study the peculiarities of macrobenthos vertical patterns in the Arctic and to find out features specific to this region. For this, 24 stations were sampled in 2019 aboard the R/V “Akademik Tryoshnikov” while drifting in the North Barents Sea and along a transect south-west of the Franz Joseph Land. Sediments were obtained using a box corer; afterwards, subsamples were taken by a tube corer and cut into vertical sub-cores. Three to four strata (depending on biotope) characterized by similar species composition and abundance were distinguished. No direct relation between the increase in species richness and the complication of vertical structure was found. Avoiding competition through dwelling in different layers at one station was observed ...