Composition and origin of organic matter in surface sediments of Lake Sarbsko: A highly eutrophic and shallow coastal lake (northern Poland)

Woszczyk, Michał; Bechtel, Achim; Gratzer, Reinhard; Kotarba, Maciej J.; Kokociński, Mikołaj; Fiebig, Jens; Cieśliński, Roman

doi:10.1016/j.orggeochem.2011.07.002

Cited by 55 publications

(25 citation statements)

References 86 publications

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“…The magnitudes and spatial distribution of TOC in lake sediment may reflect multiple, complex processes (Sifeddine et al, 2011;Woszczyk et al, 2011;Dunn et al, 2008;Wang et al, 2012). Our analyses showed a significant negative relationship between the δ 13 C org value and water depth (Table 1), implying that the shallow sections in Bosten Lake accumulated more allochthonous TOC (with less negative δ 13 C).…”

Section: Discussionmentioning

confidence: 74%

“…There have been a number of studies from North America (Dean and Gorham, 1998), western Europe (Bechtel and Schubert, 2009;Woszczyk et al, 2011), eastern Asia (Khim et al, 2005;Wang et al, 2012), and other regions (Dunn et al, 2008), showing large spatial variability in total organic carbon (TOC) of lake sediment. The magnitude of TOC in surface sediment may depend on many factors, including column water productivity, terrestrial inputs of organic materials, properties of sediment, and rate of microbial activity (Burone et al, 2003;Gireeshkumar et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Spatial distribution and sources of organic carbon in the surface sediment of Bosten Lake, China

Wang

Zhang

et al. 2015

Biogeosciences

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Abstract. Lake sediment is an important carbon reservoir. However, little is known on the dynamics and sources of sediment organic carbon in Bosten Lake. We collected 13 surface (0-2 cm) sediment samples in Bosten Lake and analyzed total organic carbon (TOC), total nitrogen (TN), stable carbon isotopic composition in TOC (δ 13 C org ), and grain size. We found a large spatial variability in TOC content (1.8-4.4 %) and δ 13 C org value (−26.77 to −23.98 ‰). Using a three-end-member mixing model with measured TOC : TN ratio and δ 13 C org , we estimated that 54-90 % of TOC was from autochthonous sources. Higher TOC content (> 3.7 %) was found in the east and central-north sections and near the mouth of the Kaidu River, which was attributable to allochthonous, autochthonous plus allochthonous, and autochthonous sources, respectively. The lowest TOC content was found in the mid-west section, which might be a result of high kinetic energy levels. Our study indicated that the spatial distribution of sediment TOC in the Bosten Lake was influenced by multiple and complex processes.

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Section: Discussionmentioning

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Spatial distribution and sources of organic carbon in the surface sediment of Bosten Lake, China

Wang

Zhang

et al. 2015

Biogeosciences

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“…When sedimentary organic matter primarily originates from endogenous materials, it has C/N ratios between 4 and 10 because of aquatic protein-rich and cellulous-poor organisms, while it usually has C/N ratios greater than 20 when it originates from exogenous material owing to the protein-poor and cellulous-rich nature of terrestrial plants [34,35]. However, for some shallow lakes, sedimentary organic matter may degrade due to strong oxidation or inorganic nitrogen influencing the results when the TOC concentration is less than 0.3% [36]; accordingly, simply using the C/N ratio to estimate the endogenous/exogenous sources of sedimentary organic matter may cause bias or incorrect conclusions. In Nam Co, the average water depth is very deep and the water temperature is low, so the oxidation and degradation of sedimentary organic matter is easily inhibited.…”

Section: The Spatial Distribution and Influence Factors Of Toc Tn Anmentioning

confidence: 99%

The spatial distribution and sedimentary processes of organic matter in surface sediments of Nam Co, Central Tibetan Plateau

et al. 2012

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In this study, 67 surface sediment samples collected from Nam Co in central Tibet were analyzed for total carbon, total organic carbon and total nitrogen, and 51 of these samples were also analyzed for n-alkanes. The origin and spatial distribution of organic matter were then investigated using these proxies, and the control factors responsible for the spatial distribution patterns and paleolimnological significance were discussed. The results indicated that the origin of organic matter in surface sediment of Nam Co is consistent with the sources of n-alkanes, which were primarily submerged plants, followed by terrestrial plants, and then aquatic algae and bacteria. The organic matter in surface sediments of the lake showed typical spatial variability. Because of the great influence of underwater topography, river inputs and water quality, the spatial distribution of organic matter is enriched from the source to the deposit center. This spatial variability of organic matter in the lake indicates that the sediments in different areas have different sensitivities to environmental changes, which is important to reconstruction of paleoenvironments and paleoclimate using lake sediment cores.Tibetan Plateau, Nam Co, surface sediments, spatial distribution, sedimentary processes Citation:Wang Y, Zhu L P, Wang J B, et al. The spatial distribution and sedimentary processes of organic matter in surface sediments

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“…Indeed, the mean seasonal values of N 2 /O 2 displayed a positive correlation to lake water temperature (r = 0.70, n = 7, p \ 0.08), and during the summer there were the lowest concentrations of dissolved O 2 in the lake waters. A plausible reason for O 2 depletion might be the enhanced oxidation of organic matter (Schubert et al 2010;Woszczyk et al 2011).…”

Section: Discussionmentioning

confidence: 99%

“…Cieśliński and Drwal (2005) pointed out that these lakes act as quasiestuaries because there are no tides on this coast and the lakes are only episodically inundated by brackish waters inflowing from the sea during specific anemometric conditions. Woszczyk et al (2011) suggested that these lakes are potentially a source for CH 4 . However neither saturation levels nor CH 4 fluxes out of the lakes have been determined so far.…”

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confidence: 99%

Processes affecting molecular and stable isotope compositions of sediment gas in estuarine waters along the southern Baltic coast (Poland)

et al. 2016

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This paper investigates the molecular and stable isotope compositions of sediment gases from seven coastal lakes along the southern Baltic coast in Poland. The aim is to extend the knowledge of the genesis and distribution of microbial gases in the zone of mixing of fresh and salt waters with special attention to the effect of salinity, climate-related seasonality, and vertical sediment mixing. We found differences in the compositions of gas between the studied lakes and within each lake. These differences are mainly controlled by lake water depth and the presence of macrophytes. Due to the dissolution of rising bubbles in highly oxygenated water, the concentrations of CH 4 and CO 2 show up to 67% decline along the water column in favor of N 2 and O 2 . On the other hand, in vegetated parts of the lakes, the CH 4 is depleted in favor of CO 2 , and the residual CH 4 and CO 2 are enriched in 13 C. Despite the fact that the coastal lakes display highly oxidizing conditions in the water column and that the bottom sediments are mixed by wind waves the CH 4 reveals rather low oxidation. On the basis of the CH 4 /N 2 ratio we established that there are differences in the intensity of ebullition throughout the lakes. Higher intensities of ebullition were found in shallower parts of the lakes. Salinity has no effect on the stable C and H isotope composition of sediment gas. It seems, however, that salinity affects the molecular composition of hydrocarbons via preferential oxidation of CH 4 under higher salinity conditions.

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Composition and origin of organic matter in surface sediments of Lake Sarbsko: A highly eutrophic and shallow coastal lake (northern Poland)

Cited by 55 publications

References 86 publications

Spatial distribution and sources of organic carbon in the surface sediment of Bosten Lake, China

Spatial distribution and sources of organic carbon in the surface sediment of Bosten Lake, China

The spatial distribution and sedimentary processes of organic matter in surface sediments of Nam Co, Central Tibetan Plateau

Processes affecting molecular and stable isotope compositions of sediment gas in estuarine waters along the southern Baltic coast (Poland)

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