Biogeochemistry of the Kem' River estuary, White Sea (Russia)

Шевченко, В. П.; Dolotov, Yu. S.; Filatov, N. N.; Alexeeva, T. N.; Филиппов, А. С.; Nöthig, Eva‐Maria; Novigatsky, А. N.; Паутова, Л. А.; Платонов, А. А.; Politova, N. V.; Ratkova, Tatjana; Stein, Rüdiger

doi:10.5194/hess-9-57-2005

Cited by 31 publications

(4 citation statements)

References 27 publications

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“…ФП в речной и морской зонах и, с другой стороны, способностью некоторых пре сноводных и морских водорослей выдерживать флуктуации солености в зоне смешения вод [31,38]. Следует отметить, что в июле 2001 г. наиболь шая суммарная биомасса ФП в Кемском эстуарии была выявлена в морской зоне [3,41]. В сентябре 2000 г. в эстуарии р. Кереть, впадающей в Канда лакшский залив Белого моря, биомасса ФП была максимальной также в морской части эстуария [1].…”

Section: обсуждение результатовunclassified

“…Аналогичная кар тина характерна и для зоопланктона Кемско го эстуария [2]. Следует, однако, отметить, что в начале июля 2001 г. в фитопланктоне Кемского эстуария по биомассе во всех зонах доминирова ли морские водоросли [3,41].…”

Section: обсуждение результатовunclassified

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Spatial distribution of phytoplankton in the subarctic estuary (Kem’ river, the White Sea)

et al. 2019

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The species composition and biomass of the phytoplankton (Ph) as well as hydrological characteristics were estimated in 4 spatial surveys in the subarctic tidal estuary of the Kem’ River and adjacent area of Onega Bay (White Sea, Russia) in June–July 2008–2011. The study area was divided into 3 zones (the river zone, the gradient zone and the marine zone), based on the salinity variation of the surface layer. In total, 318 species of Ph were registered, 143 species are found in the river zone, 225 — in the gradient zone, 106 — in the marine zone. The greatest number of species in all zones was represented by diatoms. The highest biodiversity of Ph in the surface layer was detected in the gradient zone. The averages of total biomass of the Ph in the surface layer (Bo) at different years varied in range 2.8–16.9 mg C/m3. Although Bo did not differ significantly between zones, with the exception of 2011, when Bo was the highest in the river zone, dissimilarity in the structure of the Ph in the river, gradient and marine zones were 61–95%. The similarity of the Ph at the stations of each zone was poor (22–53%) with the lowest values in the gradient zone. It is postulated that the tidal cycles determine the spatial and temporal heterogeneity of the composition, structure and abundance of Ph in the Kem’ river estuary in summer.

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Section: обсуждение результатовunclassified

Spatial distribution of phytoplankton in the subarctic estuary (Kem’ river, the White Sea)

et al. 2019

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“…These elements form low-soluble carbonates in aquatic environments [36]. The distribution of trace elements in Trace Elements -Human Health and Environment sediments is strongly influenced by the water column stratification because of the natural fractionation and deposition of materials of different grain sizes at sites, which are determined by hydrodynamic conditions [5,13,43,44]. b Cited from [46].…”

Section: Abundance and Distribution Of Major And Trace Elements In Su...mentioning

confidence: 99%

Trace Elements in Suspended Particulate Matter and Sediments of the Cai River: Nha Trang Bay Estuarine System (South China Sea)

Koukina¹,

Лобус²

2018

Trace Elements - Human Health and Environment

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“…Available long‐term discharge records have been compiled for at least 30 “small” ocean‐terminating river systems across the pan‐Arctic (R‐ArcticNet catalogue, Lammers et al, ; Environment Canada, Li Yung Lung et al, ), but coverage along the Alaskan coast (four rivers) and Canadian coast (eight rivers) is limited. Several regional studies have also described geochemical variables from “small” coastal‐draining rivers in the White Sea (Kem' River, Shevchenko et al, ; Mezen and Onega rivers, Dittmar & Kattner, ; Holmes et al, ), the Alaskan Beaufort Sea (Colville, Sagavanirktok, and Kuparuk rivers; Holmes et al, ; McClelland et al, ), and the Canadian Arctic Archipelago (CAA; Alkire et al, ; Lafrenière & Lamoureux, ; Lewis et al, ; Li Yung Lung et al, ), but few include sufficient data to assess regional changes over time, nor do they include the necessary ancillary information to allow comparison with the largest Arctic river systems.…”

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confidence: 99%

Geochemistry of Small Canadian Arctic Rivers with Diverse Geological and Hydrological Settings

et al. 2020

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A survey of 25 coastal-draining rivers across the Canadian Arctic Archipelago (CAA) shows that these systems are distinct from the largest Arctic rivers that drain watersheds extending far south of the Arctic circle. Observations collected from 2014 to 2016 illustrate the influences of seasonal hydrology, bedrock geology, and landscape physiography on each river's inorganic geochemical characteristics. Summertime data show the impact of coincident gradients in lake cover and surficial geology on river geochemical signatures. In the north and central CAA, drainage basins are generally smaller, underlain by sedimentary bedrock, and their hydrology is driven by seasonal precipitation pulses that undergo little modification before they enter the coastal ocean. In the southern CAA, a high density of lakes stores water longer within the terrestrial system, permitting more modification of water isotope and geochemical characteristics. Annual time-series observations from two CAA rivers reveal that their concentration-discharge relationships differ compared with those of the largest Arctic rivers, suggesting that future projections of dissolved ion fluxes from CAA rivers to the Arctic Ocean may not be reliably made based on compositions of the largest Arctic rivers alone, and that rivers draining the CAA region will likely follow different trajectories of change under a warming climate. Understanding how these small, coastal-draining river systems will respond to climate change is essential to fully evaluate the impact of changing freshwater inputs to the Arctic marine system.Plain Language Summary River inputs are important for the physics and biogeochemistry of the rapidly changing Arctic Ocean. Most of our knowledge of river inputs comes from studies of the six largest rivers which drain areas reaching far south of the Arctic Circle, omitting 45% of the pan-Arctic watershed. This has left a gap in our understanding of smaller, coastal-draining rivers and how these are influenced by the changing climate. We studied 25 coastal-draining rivers in the Canadian Arctic Archipelago (CAA) for geochemical comparison to the larger, more southerly rivers. Summertime survey data show that geochemical properties change from south to north following the distribution of lake cover, bedrock geology, and glacial history. Unlike the largest Arctic rivers, however, repeat observations over the annual cycle indicate that dissolved ion concentrations are not strongly influenced by changing water fluxes in the CAA region. To fully understand the impact of changing freshwater inputs to the Arctic Ocean requires consideration of smaller watersheds that may change differently compared to the largest Arctic rivers.

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Biogeochemistry of the Kem' River estuary, White Sea (Russia)

Cited by 31 publications

References 27 publications

Spatial distribution of phytoplankton in the subarctic estuary (Kem’ river, the White Sea)

Spatial distribution of phytoplankton in the subarctic estuary (Kem’ river, the White Sea)

Trace Elements in Suspended Particulate Matter and Sediments of the Cai River: Nha Trang Bay Estuarine System (South China Sea)

Geochemistry of Small Canadian Arctic Rivers with Diverse Geological and Hydrological Settings

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