Chapter 39 - Geomorphological and habitat mapping of the glaciated shelf (the Velikaya Salma Strait of the Kandalaksha Gulf of the White Sea, Russia)статьяИсследовательская статьяГлава в книге
Дата последнего поиска статьи во внешних источниках: 4 мая 2020 г.
Аннотация:The Velikaya Salma Strait is part of a fiard, typical of the Kandalaksha Gulf of the White Sea. Seabed topography, landscapes and bottom sediments were studied in the area of 35.12 km2 (depths of 10-120 m) using geophysical methods, geological sampling and visual observations. Macrobenthos distribution was sampled at 15-60 m depth and studied using underwater camera. Structural-denudation, glacial, gravity and tidal-current landforms were identified on the Strait seabed. Bottom sediments vary from boulder-pebble to pelite. The bathymetric zonation of their distribution is disturbed when tidal currents encounter the dissected seabed topography and by gravitational displacements. Macrobenthos distribution has statistically significant dependence on bottom sediments grainsize and depths. Galathowenia oculata - Chaetozone setosa community prevails on muddy sediment, and Macoma calcarea - Scoloplos acutus community prevails on sandy bottom. Statistical relationships between Side scan sonar images and macrobenthos distribution are stable in the areas of gently dismembered seabed and are lost in the areas of dissected topography.https://doi.org/10.1016/B978-0-12-814960-7.00039-7
