Seasonal variability of carbon forms in water and bottom sediment in lakes with a different type of mixing

• Autorzy: Szymanski D. , Dunalska J.A. , Augustyniak R. , Sienska J.

Warianty tytułu

PL

Sezonowa zmienność form węgla w wodzie i osadach dennych jezior o zróżnicowanym typie mieszania

• Języki publikacji: EN

Abstrakty

EN

The aim of this study was to determine seasonal changes in the occurrence of carbon forms inwater and bottom sediment in lakes with a different type of mixing. The study was conducted in five urban lakes located in Olsztyn: Track, Sukiel, Podkówka, Redykajny and Tyrsko. The research was carried out in March, April, August and November. We analyzed TOC, DOC and IC in samples of water collected near the surface and near the bottom, as well as in the overlying and interstitial layerof 0–5 cm and 5–10 cm of sediment. The dominant form of carbon in urban lakes is organic carbon,whose share in the surface water layer in the lakes analyzed in the present study was from 29.3 to58.4% of the total pool of carbon, and the near-bottom layer was characterized by values ranging from28.2 to 66%, while the layer of overlying water contained from 34.2 to 63.6% of the total amount of carbon. In the interstitial water, the percentage of organic carbon in the total pool was from 40.1 to 94% within the 0–5 cm layer of sediment and from 56.4 to 88.1% in the layer of sediment at the depth of 5–10 cm. The percentage of inorganic carbon forms ranged from 2.94% to 71.79% of the total amount of carbon. The carbon cycle in lake water depends not only on the inflow of this element from the catchment, but also on its release from the bottom sediment, which can be a large reservoir of organic carbon in lakes

PL

Celem pracy było określenie sezonowych zmian zawartości węgla w wodzie i osadach dennych w jeziorach o zróżnicowanym typie mieszania. Badania przeprowadzono w pięciu jeziorach miejskich Olsztyna: Track, Sukiel, Podkówka, Redykajny, Tyrsko w marcu, kwietniu, sierpniu i w listopadzie.W pobranych próbkach wody zbadano zawartość TOC, DOC oraz IC. Wodę do badań pobierano z warstwy powierzchniowej, naddennej, nadosadowej oraz interstycjalnej (0–5 i 5–10 cm).Dominującą formą węgla w jeziorach miejskich był węgiel organiczny, którego udział w całkowitej puli węgla wynosił od 29,3% do 58,4% w wodzie powierzchniowej, a w wodzie naddennej od 28,2% do66%, natomiast w wodzie nadosadowej od 34,2% do 63,6%. W wodzie interstycjalnej procentowa zawartość węgla organicznego wynosiła od 40,1% do 94% w warstwie 0–5 cm osadów, a w warstwie 5–10 cm od 56,4% do 88,1%. Zawartość procentowa węgla nieorganicznego wynosiła od 2,94% do 71,29% całkowitej puli węgla. Uzyskane wyniki wskazują, że obieg węgla w wodzie jeziorowej będzie zależał nie tylko od jego dopływu ze zlewni, ale również od uwalniania tego składnika z osadów dennych, które mogą być dużym rezerwuarem węgla organicznego w jeziorze

• Wydawca: -
• Czasopismo: Polish Journal of Natural Sciences
• Rocznik: 2016
• Tom: 31
• Numer: 2
• Opis fizyczny: p.199-211,fig.,ref.

Twórcy

autor

Szymanski D.

• Department of Water Protection Engineering, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland

autor

Dunalska J.A.

• Department of Water Protection Engineering, University of Warmia and Mazury in Olsztyn, Prawochenskiego 1, 10-719 Olsztyn, Poland

autor

Augustyniak R.

• Department of Water Protection Engineering, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland

autor

Sienska J.

• Department of Water Protection Engineering, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland

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