Some features of the macrobenthos community structure in estuary ecosystems (Kandalaksha Bay, the White Sea)

Features of the species and spatial structure of macrobenthic sublittoral communities in a lagoon ecosystem on the Green Cape (the White Sea) were studied. 31 invertebrate species and 3 species of sea grasses and algae (Zostera marina, Cladophora sericea, and Fucus vesiculosus) were found in the sublittoral of the surveyed lagoon. The data on the species composition, diversity and spatial structure of macrobenthos communities indicate the predominance of littoral brackish-water and marine euryhaline macrobenthos species (Hydrobia ulvae, Tubificoides benedii, Chironomus salinarius, and Macoma balthica) in the coastal region of the lagoon, marine euryhaline littoral and sublittoral species (mainly polychaetes Heteromastus filiformis, Polydora ciliata, and Capitella capitata) in the central deeper region, and marine sublittoral less euryhaline species (Pontoporeia femorata, Anonyx nugans, Nereimyra punctata, Terebellides stroemi, Astarte montagui, Micronephthys minuta, and Atylus carinatus) at the exit from the lagoon. The ecosystem of the Green Cape lagoon belongs to lagoons significantly fenced off from the sea with depleted specific fauna (many littoral species) and largely influenced by carbon load and salinity. The reduced connection of the lagoon with the sea due to the continued rise of the White Sea coast (4 mm per year in this area) will contribute to a decrease in the species diversity and the predominance of few small eurytopic invertebrate species resistant to organic load, oxygen deficiency, and desalination.

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Characteristics of gas-saturated deposits of the Kandalaksha bay, the White Sea, according to the seismic-acoustic and litho-geochemical studies

Moscow University Bulletin. Series 4. Geology ◽

10.33623/0579-9406-2019-1-107-114 ◽

2019 ◽

pp. 107-114

Author(s):

M. Yu. Tokarev ◽

E. N. Poludetkina ◽

A. V. Starovoytov ◽

A. S. Pirogova ◽

S. R. Korost ◽

...

Keyword(s):

Organic Matter ◽

Gas Phase ◽

White Sea ◽

Sedimentary Sequence ◽

The White Sea ◽

Glacial Sediments ◽

Kandalaksha Bay ◽

Maximal Thickness ◽

Kandalaksha Gulf ◽

Geochemical Studies

The article discusses the results of complex geological, geophysical and geochemical studies of gas-saturated sediments within the Kandalaksha gulf, the White Sea. As a part of the marine study detailed seismoacoustic studies were conducted, resulting in the geometry of the seabed, the distribution of geological peculiarities of the sedimentary sequence, including the zones of focused unloading of hydrocarbon fluids. It is shown that assemblages of the «gas caps» are confined to the zones of maximal thickness of post-glacial sediments. The composition of the organic matter in the sediments and the gas phase has been studied in detail.

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Plant Part Age and Size Affect Sessile Macrobenthic Assemblages Associated with a Foliose Red Algae Phycodrys rubens in the White Sea

Diversity ◽

10.3390/d11050080 ◽

2019 ◽

Vol 11 (5) ◽

pp. 80 ◽

Cited By ~ 1

Author(s):

Alexandra Chava ◽

Anna Artemieva ◽

Eugeniy Yakovis

Keyword(s):

Community Structure ◽

Surface Area ◽

Red Algae ◽

White Sea ◽

Plant Part ◽

Marine Macroalgae ◽

The White Sea ◽

Plant Parts ◽

Total Cover ◽

Macrobenthic Assemblages

Facilitation by foundation species commonly structures terrestrial and marine communities. Intraspecific variation in individual properties of these strong facilitators can affect the whole suite of the dependent taxa. Marine macroalgae often act as ecosystem engineers, providing shelter and substrate for numerous associated organisms. Epibiosis of foliose red algae, however, remains underexplored, especially in the high latitudes. Here we studied sessile macrobenthic assemblages associated with a foliose red algae Phycodrys rubens in the White Sea (66° N) shallow subtidal, and the effect of individual plant properties on their structure. The blades of P. rubens develop annually, and it is possible to tell the young (usually larger) plant parts from the old ones. We hypothesized that epibenthic community structure depends on plant part age and size. We examined epibiosis on 110 plants at two sites, and the results generally supported our hypotheses. Old plant parts were several times smaller, and had higher total cover than young parts. Sponges strongly dominated the epibiosis on old parts, and young parts were dominated by polychaetes and bryozoans. Plant part surface area negatively correlated with total cover on young parts, while on old parts the relatioship was location-specific. On young parts the relative abundance of a polychaete Circeis armoricana increased with surface area, and the proportion of sponges decreased. The patterns indicate that epibenthic community structure is linked to the demography of an ecosystem engineer.

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Bacterial community structure of a coastal area in Kandalaksha Bay, White Sea, Russia: possible relation to tidal hydrodynamics

Annals of Microbiology ◽

10.1007/s13213-014-0877-0 ◽

2014 ◽

Vol 65 (1) ◽

pp. 443-453 ◽

Cited By ~ 8

Author(s):

Chiara Pesciaroli ◽

Belén Rodelas ◽

Belén Juarez-Jiménez ◽

Paolo Barghini ◽

Massimiliano Fenice

Keyword(s):

Community Structure ◽

Bacterial Community ◽

Coastal Area ◽

Bacterial Community Structure ◽

White Sea ◽

Kandalaksha Bay ◽

Tidal Hydrodynamics

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Harpacticoida taxocen diversity in the silty-sandy littoral zone of Kandalaksha Bay of the White Sea

Oceanology ◽

10.1134/s0001437006040060 ◽

2006 ◽

Vol 46 (4) ◽

pp. 492-500 ◽

Cited By ~ 11

Author(s):

E. S. Chertoprud ◽

M. V. Chertoprud ◽

D. V. Kondar ◽

P. N. Kornev ◽

A. A. Udalov

Keyword(s):

Littoral Zone ◽

White Sea ◽

The White Sea ◽

Kandalaksha Bay

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Age and growth of European flounder from the Chupa Inlet (Kandalaksha Bay, the White Sea)

Proceedings of the Zoological Institute RAS ◽

10.31610/trudyzin/2019.323.2.93 ◽

2019 ◽

Vol 323 (2) ◽

pp. 93-104 ◽

Cited By ~ 1

Author(s):

P.N. Yershov ◽

A.A. Matvienko ◽

D.A. Aristov

Keyword(s):

Growth Rate ◽

Age Structure ◽

White Sea ◽

The White Sea ◽

North East ◽

The North ◽

Kandalaksha Bay ◽

Onega Bay ◽

European Flounder ◽

Males And Females

We studied age structure, growth and distribution of European flounder Platichthys flesus at the sea in Chupa Inlet (Kandalaksha Bay, the White Sea). Immature and mature fishes fed at shallows of Chupa Inlet and adjacent open sea area in June-August. Size-age and sex composition of fishes in catches are presented in the paper. Individuals of 17–27 cm length and 4–5 year age constituted the majority of catches (45%). On the whole, males numerically predominated over females in the samples. Analysis of sexual differences of growth has shown that females grew faster than males. The most intensive growth took place in July–August, according to the increments on the otoliths. Growth rate of the flounder from Chupa Inlet appeared to be similar to the growth rate of the flounder from other open shore sites of Kandalaksha Bay. We have compared also peculiarities of growth and age structure of flounder populations from Kandalaksha Bay to those from other bays of the White Sea. Significant differences of the growth rate were found between flounders from Kandalaksha, Onega, Dvina and Mezen' Bays. Both males and females from Onega Bay grew faster than other. Growth rate of fish decreased towards the north (Kandalaksha Bay) and the north-east (Mezen' Bay). The most slow-growing flounder inhabited shallows of Mezen' Bay. Statistical analysis has shown that age structure of flounder populations varied in different bays of the White Sea, and observed regional variations were characteristic for both males and females. Flounder population in Onega Bay was characterized by the dominance of the younger individuals compared to populations in other bays. The greatest mean age of flounder was registered in populations from the north-west (Kandalaksha Bay) and the north-east (Mezen' Bay) parts of the White Sea. Males and females in populations from Onega and Dvina Bays differed significantly in the mean age, and as a rule females were older. No age differences between sexes were found in flounder population of Mezen' Bay. We suppose that temperature conditions were among the main factors influencing regional differences in growth rate and age structure of the flounder populations in the White Sea.

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