Microplankton of the Barents Sea: current composition and structure on the eve of the winter
Journal Title: Вестник МГТУ - Year 2017, Vol 20, Issue 2
Abstract
The results of microplankton (Protista) investigations in the Barents Sea (standard "Kola Meridian Transect", ~70–78° N, 33° 30′ E) in November / December have been presented. Samples for the determination of the taxonomical composition and abundance have been fixed with buffered formalin and examined with light microscopy using Nageotte counting chambers. A list of species recorded in the Barents Sea on transect, abundance and vertical distribution of microplankton has been given: a) the seasonal composition of species (Ceratium fusus, Dicroerisma psilonereiella, Dinophysis rotundata, Lessardia elongata aff., Oxytoxum caudatum, Pronoctiluca pelagica, Protoperidinium brevipes, Prorocentrum balticum (Dinophyta), Corethron criophilum (Bacillariophyta), Coccolithus pelagicus (Haptophyta), Halosphaera viridis (Prasinophyta)); b) mean values of the total biomass of microplankton and its distribution in the water column (1.14 mkg/l in the layer of 50–0 m, 0.97 mkg/l – 100–50 m, 0.75 mkg/l – 200–100 m, 0.53 mkg/l – 300–200 m). Such parameter as dominant species in the structure of the total number is less constant (the ordinary dominant O. caudatum, subdominants – L. elongata aff., P. balticum, C. pelagicus, C. criophilum); in some years, at selected sites of the Barents Sea most of the total number has been formed to unusual species (Emiliania huxleyi, Mesoporos perforatus). The less stable characteristics of microplancton are dominant species composition in the biomass structure, total number of cells and their distribution in the water column.
Authors and Affiliations
P. R. Makarevich, A. A. Oleinik
Keywords
Related Articles
- EP ID EP224088
- DOI 10.21443/1560-9278-2017-20-2-316-325
- Views 89
- Downloads 0
Model of evaporation of kerosene droplets in the atmosphere and pollution of soil around the airfield
Pollution of soils near airport territories is caused by formation and dispersion of kerosene droplets during its incomplete combustion in afterburner operation of the aircraft engine. With constant impact on the environ...
Changes in the abundance and terms of presence in the plankton of the red king crab larvae within the Ura Bay (West Murman) in 2011–2016
The distribution and abundance of larvae of the red king crab have been studied in the eastern part of the Ura Bay as part of the Motovskoy Bay (the Barents Sea) during 2011–2016. The larvae of the red king crab in the s...
The study of the technological adequacy of raw materials used in the production of chocolate semi-finished product
Glazed confectionery products are in great demand among consumers. The chocolate glaze is a high-calorie confectionery semi-finished products consisting of sugar, fat and cocoa. The quality of the chocolate glaze depends...
Changes in activity of harp seal (Pagophilus groenlandicus) in the spring – summer period in conditions of aviary keeping
The results of research on changes in active forms of behavior of two representatives of harp seal (Pagophilus groenlandicus Erxleben, 1777) in the spring - summer period in conditions of aviary keeping by analyzing its...
Bismuth-silver mineralization in the Sergozerskoe gold occurrence
Bismuth-silver mineralization attendant to gold mineralization in the Sergozerskoe gold occurrence has been studied in detail. Bi-Ag mineralization is connected with diorite porphyry dykes, which cut volcanic-sedimentary...