Open AccessDistribution and seasonal dynamics of bacterioplankton along the westernborder of the Barents Sea.
Author(s) -
M. P. Venger
Publication year - 2020
Publication title -
trudy kolʹskogo naučnogo centra ran
Language(s) - English
Resource type - Journals
ISSN - 2307-5252
DOI - 10.37614/2307-5252.2020.11.5.005
Subject(s) - bacterioplankton , oceanography , biomass (ecology) , photic zone , front (military) , abundance (ecology) , polar front , environmental science , spring (device) , arctic , atmospheric sciences , ecology , geology , biology , nutrient , phytoplankton , mechanical engineering , engineering
The structural characteristics of bacterioplankton were studied in the waters of the Cape`s Nordkap (cut I) and Zuydkap (cut II) of Mezhvezhiy island. Its abundance and biomass in the upper part of the photic layer of coastal and Atlantic waters in cut I was comparable and increased from the late spring to the summer season. Moreover, in cuts I and II, the values of summer maximum corresponded to the zone of the Polar Front and adjacent Arctic waters. By the beginning of the winter season, the level of development of communities in waters of different genesis decreased everywhere, but still did not reach the minimum, observed insummer in layers deeper than 200 m. The structure of bacterioplankton was determined by single cells of the smallest size, mainly of a cocci-form. The arrival of rod-shaped bacteria (contribution to the total biomass could reach 50%) was recorded in the summer period.