The Cyanobacteria of the Intertidal Zone of the Kola Bay of the Barents Sea: Species Composition and Ecology

The linear growth equations and production for bivalve Mya arenaria (Linne, 1758) in the intertidal zone Yarnyshnaya and Zelenetskaya bays of Barents Sea are represented. Our studies have shown that length of the shell Mya reached 26.3–62.5 mm, the highest age was 11 years. Indicators of the growth rate of mollusks from Zelenetskaya Bay are significantly higher than those of mollusks from Yarnyshnaya Bay. Linear growth is described by the Bertalanfi equations: Lt = 84.27 [1–e–0.0721 (t–0.1244)] – for mollusks from Yarnyshnaya Bay, Lt = 118.49 [1–e–0.0566 (t–0.2744)] – for mollusks from Zelenetskaya Bay. Production in the intertidal zone of the Yarnyshnaya Bay was lower (44.8 g/m2 with a biomass of 330 g/m2) than in the intertidal zone of the Zelenetskaya Bay (90.5 g/m2, with a biomass of 258 g/m2). The P/V-value is the coefficient of 0.14 and 0.35, respectively.

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Distribution of Polychaeta Communities in the Western and Northern Part of the Barents Sea

KnE Life Sciences ◽

10.18502/kls.v5i1.6019 ◽

2020 ◽

Author(s):

Dinara Dikaeva ◽

Elena Frolova

Keyword(s):

Species Composition ◽

Bottom Sediments ◽

Barents Sea ◽

Bottom Topography ◽

Silty Clay ◽

The Barents Sea ◽

Structure Of Communities ◽

Composition And Structure ◽

Quantitative Characteristics ◽

Hard Soils

Species composition and quantitative characteristics of polychaetes in the western and northern parts of the Barents Sea were analyzed on the basis of the material collected in July and November 2017 on MMBI expeditions aboard the RV “Dalniye Zelentsy”. Three faunistic polychaete complexes were revealed, depending on environmental conditions in the study area. A change in species composition and structure of communities from the bottom topography, structure of bottom sediments and bottom hydrodynamics were noted. An increase in biomass and density of polychaetes settlement was revealed in deep-water areas of the Barents Sea, on soft silty-clay soils, where the dominant species is Spiochaetopterus typicus. A decrease in quantitative characteristics of polychaetes was observed in shallow areas, on hard soils, in the zone of intensive erosion of bottom sediments as a result of warm and cold currents interaction, where the polychaete Nothria hyperborea dominated.

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Dynamics of the Spatial Chlorophyll-A Distribution at the Polar Front in the Marginal Ice Zone of the Barents Sea during Spring

Water ◽

10.3390/w14010101 ◽

2022 ◽

Vol 14 (1) ◽

pp. 101

Author(s):

Pavel R. Makarevich ◽

Veronika V. Vodopianova ◽

Aleksandra S. Bulavina

Keyword(s):

Species Composition ◽

Sea Ice ◽

Chlorophyll A ◽

Phytoplankton Community ◽

Barents Sea ◽

Sea Water ◽

Polar Front ◽

Ice Melting ◽

The Barents Sea ◽

Ice Edge

Effects of the sea-ice edge and the Polar Frontal Zone on the distribution of chlorophyll-a levels in the pelagic were investigated during multi-year observations in insufficiently studied and rarely navigable regions of the Barents Sea. Samples were collected at 52 sampling stations combined into 11 oceanographic transects over a Barents Sea water area north of the latitude 75° N during spring 2016, 2018, and 2019. The species composition, abundance and biomass of the phytoplankton community, chlorophyll-a concentrations, hydrological and hydrochemical parameters were analyzed. The annual phytoplankton evolution phase, defined as an early-spring one, was determined throughout the transects. The species composition of the phytoplankton community and low chlorophyll-a levels suggested no phytoplankton blooming in April 2016 and 2019. Not yet started sea-ice melting prevented sympagic (sea-ice-associated) algae from being released into the seawater. In May 2018, ice melting began in the eastern Barents Sea and elevated chlorophyll-a levels were recorded near the ice edge. Chlorophyll-a concentrations substantially differed in waters of different genesis, especially in areas influenced by the Polar Front. The Polar Front separated the more productive Arctic waters with a chlorophyll-a concentration of 1–5 mg/m3 on average from the Atlantic waters where the chlorophyll-a content was an order of magnitude lower.

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Species composition and structure of the ichthyofauna of the Barents Sea

Journal of Ichthyology ◽

10.1134/s0032945208040012 ◽

2008 ◽

Vol 48 (4) ◽

pp. 277-291 ◽

Cited By ~ 12

Author(s):

O. V. Karamushko

Keyword(s):

Species Composition ◽

Barents Sea ◽

The Barents Sea ◽

Composition And Structure ◽

Species Composition And Structure

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Bryozoa of the northern part of Barents Sea: species composition, distribution, ecology (based on the materials of expeditions MMBI 2016–2017).

Transaction Kola Science Cetnre ◽

10.37614/2307-5252.2020.11.5.006 ◽

2020 ◽

Vol 11 (5-2020) ◽

pp. 50-67

Author(s):

O.Yu. Evseeva ◽

Keyword(s):

Species Composition ◽

Environmental Conditions ◽

Barents Sea ◽

Water Masses ◽

Bottom Relief ◽

Composition Distribution ◽

Related Factors ◽

The Barents Sea ◽

Distribution Features ◽

Quantitative Indicators

The modern data about fauna of Bryozoa in the northern part of Barents Sea are obtained. The taxonomic and biogeographic composition, distribution features of bryozoan communities, and their quantitative indicators are analyzed. 124 Bryozoa species are identified in the samples, one of which (Uschakovia gorbunoviKluge, 1946) is a new for the Barents Sea fauna. It was found that the richness of the bryozoan fauna is determined by the variety of environmental conditions and depends on the bottom relief (and related factors: soil, hydrodynamic intensity and sedimentation) and the parameters of water masses.

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Epilithic lichens and their morphological adaptations to the conditions of the White and Barents Seas coast (Russian Arctic)

Czech Polar Reports ◽

10.5817/cpr2012-2-11 ◽

2012 ◽

Vol 2 (2) ◽

pp. 109-116 ◽

Cited By ~ 2

Author(s):

Anzhella V. Sonina

Keyword(s):

Species Composition ◽

Barents Sea ◽

White Sea ◽

Lichen Species ◽

The White Sea ◽

The Barents Sea ◽

Lichen Cover ◽

Functional Features ◽

Epilithic Lichens ◽

Sea Coast

The main aim of our work was to investigate the biodiversity of coastal lichens, conditions of lichen cover formation, and study the structural and functional adaptations of Lecanora intricata (Ach.) Ach. and L. polytropa (Ehrh. ex Hoffm.) Rabenh. The investigation was carried out during 2008-2012 on cliffs both along the Murmansk (the Barents Sea) coast and the southern and western shores of the White Sea. For the evaluation of species composition, and ecotopic coenotical features of epilithic lichen growing on cliffs, the geobotanical methods have been used. In addition, the anatomical, morphological and biochemical studies of Lecanora intricata and L. polytropa have been made. 91 species have been included in the total list of lichens on the White Sea coast. On the Murmask coast of the Barents Sea, 36 lichen species had revealed. On the coastal territory, the epilithic lichens inhabit the upper littoral and supralittoral zone. The lichen cover is formed by two interacting factors: the water factor (sea) and the terrestrial vegetation. Four lichen zones were distinguished in the all studying territories. They differed by the lichen species composition and effect of the sea. The first lichen’s zone is the intrazonal structure in the complex coastal lichen cover. In Lecanora polytropa and L. intricata, structural and functional features of lichens for adaptation to unstable coastal conditions were identified. The crustose biomorphs were better adapted to temperature and degree of hydration of thalli. Formation of the smallest ascospores is reproductive strategy of epilithic lichens in extreme habitats. High content of usnic acid in the studied lichen thalli allows them to exist in the open areas exposed to solar radiation and provides the biotic regulation that affects the structure of lichen cover. Optimal ratio of algal to fungal components in the thalli of these species is necessary to maintain their life in extreme environments.

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