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Artículos de revistas sobre el tema "Lake sediments"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 25 de julio de 2025

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1

Pujate, Agnese, Karina Stankevica, Laimdota Kalnina, et al. "Records of the anthropogenic influence on different origin lake sediments of Latvia." Baltica 28, no. 2 (2015): 135–50. http://dx.doi.org/10.5200/baltica.2015.28.12.

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Sediments in lakes have formed under the conditions of sensitive ecosystem functions as archives of micro- and macrocomponents. Besides others, lake sediments preserve palaeobotanical and chemical evidence reflecting environmental changes. During the last centuries, sediment composition has been influenced also by inconsistent urban and industrial developments. This paper represents the results of chemical and palaeobotanical signatures in the sediments from four lakes of different origin: Lake Lilaste, Lake Velnezers, Lake Engure, and Lake Vevers. The data were compared with the results from

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2

Wu, Chao, Xiaodong Wu, Xuguang Ge, et al. "Characteristics of Dissolved Organic Matter in Sediments of Typical Lakes in Southeastern Hubei Province, China." International Journal of Environmental Research and Public Health 19, no. 12 (2022): 7402. http://dx.doi.org/10.3390/ijerph19127402.

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This study aimed to reveal the distribution characteristics and sources of dissolved organic matter (DOM) in sediments of typical lakes in the southeastern of the Hubei province and provide a reference for pollution control of eutrophic lakes. The sediments of four typical lakes (Liangzi, Baoan, Daye, and Qingshan) in the southeastern of the Hubei Province were investigated in May 2019. Ultraviolet-visible (UV-Vis) absorption spectroscopy and excitation-emission matrixes characteristics of DOM were obtained by UV-Vis spectrophotometry and three-dimensional fluorescence spectroscopy. Moreover,

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3

Wu, Xue, Yancai Wang, Lixin Jiao, Jia He, Hongbin Zhou, and Zhengzheng Hao. "Influencing Factors of Phosphorus Mobility and Retention in the Sediment of Three Typical Plateau Lakes." Toxics 13, no. 2 (2025): 120. https://doi.org/10.3390/toxics13020120.

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The mechanisms driving changes in the stability of phosphorus (P) in sediments under lake ecosystem degradation remain poorly understood. This study investigated the P-binding forms in sediments from three plateau lakes with different trophic states in Yunnan Province, China, aiming to elucidate the responses of sediment P compositions to human activities, lake trophic status, and dissolved organic matter (DOM) characteristics. The results showed that human activity directly contributed to sediment P retention. The trophic type of lake exerted a discernible effect on P mobility in the sediment

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4

Ziganshin, Irek, Dmitriy Ivanov, and Lilia Mukhametzyanova. "Estimation of organic carbon stocks in bottom sediments of Middle Kaban lake (Kazan, Republic of Tatarstan)." E3S Web of Conferences 555 (2024): 01017. http://dx.doi.org/10.1051/e3sconf/202455501017.

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The lakes has an enormous sediment carbon storage potential. This study aims to estimate sediment organic carbon stock in the of Middle Kaban lake, Republic of Tatarstan. The study revealed that the in the surface layer of lake sediments carbon stocks amount to 1134 tons. Total organic carbon stocks in the bottom sediments of Middle Kaban lake amount to 5986 tons. In CO2 equivalent, 21949 tons of greenhouse gases are accumulated in the lake bottom sediments.

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5

Luo, Wenguang, Yan Pan, Yangzhen Fan, Jing Lu, and Senlin Zhu. "Distribution Patterns of Sediment Organic Carbon Stocks in Shallow Lakes and the Significance for Sustainable Lake Management: Chaohu Lake in Eastern China as a Case Study." Land 13, no. 4 (2024): 507. http://dx.doi.org/10.3390/land13040507.

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Shallow lake sediments have huge potential for carbon storage, but they are vulnerable to various environmental changes and are highly susceptible to becoming a source of carbon emissions. Understanding the amount of sediment carbon storage can provide information about the potential of shallow lakes in mitigating climate change. In this study, sediment sampling was conducted at 12 study sites in Chaohu Lake, China, and sediment water content, grain size, bulk density, and sediments organic carbon (SOC) content were examined in five layers along the vertical direction, respectively, and the di

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6

Syrykh, Liudmila S. "SEDIMENTATION AS A CLASSIFICATION CRITERION FOR LAKES ON THE EAST EUROPEAN PLAIN." Географический вестник = Geographical bulletin, no. 3 (2023): 19–26. http://dx.doi.org/10.17072/2079-7877-2023-3-19-26.

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The article studies lake sedimentation on the East European Plain and adjacent areas. Lake sediment formation is researched in detail in paleolimnology. The main aim of the present study is to describe the features of lake sedimentogenesis on the East European Plain and to identify classes of lakes in accordance with the types of sedimentogenesis. PaleoLake Database, created for the analysis, contains paleolimnological information about the bottom sediments of lakes of the East European Plain and nearby territories. We analyzed 216 lakes located in different climatic and geological zones, for

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7

Nik Daud, Nik Norsyahariati, Nur Safrah Anuar, Zainuddin Yusoff, and Amimul Ahsan. "Assessment of Lake Sediments Properties and Contaminations Level." Advanced Materials Research 610-613 (December 2012): 2100–2103. http://dx.doi.org/10.4028/www.scientific.net/amr.610-613.2100.

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Sediments are principal carriers of the trace elements in the hydrosphere. Properties of the sediment (such as grain size, specific surface area and pore volume) decide the concentration level of the pollutant contain in water. The properties of sediment differed in each lake according to the normal geological phenomenon and source of discharge wastewater. The purpose of this study is to investigate the properties and contamination level of the sediment collected from lakes in Universiti Putra Malaysia (UPM). Sediment samples are taken from three different lakes; Lake IT, Lake ENG and Lake PK.

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8

Gyulai, István, János Korponai, Sheila Mumbi A. Wamugi, et al. "Cladocera and Geochemical Variables from Core Sediments Show Different Conditions of Hungarian Lakes." Water 16, no. 9 (2024): 1310. http://dx.doi.org/10.3390/w16091310.

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Studies on the sediments of lakes with varying trophic status are of particular importance when considering changes in the natural environment. In this study, our objective was to examine subfossil remains of Cladocera species and the relationship between the sedimental Cladocera assemblages and geochemical variables during 11 years of sediment records from northern Hungarian lakes. To achieve this, we compared sedimental cladoceran communities and the geochemistry of the sediment layers among lakes. Among the studied lakes, one was an intermittent lake (KMT: the Kis-Morotva Lake) which dried

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9

Orlov, A. V., M. S. Potakhin, and D. A. Subetto. "Correlation of small isolated reservoirs in the Zaonezhsky Peninsula area with the Onega Ice Lake level changes." Limnology and Freshwater Biology, no. 4 (2024): 761–66. http://dx.doi.org/10.31951/2658-3518-2024-a-4-761.

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The article discusses data on the lithological composition of bottom sediments from two small lakes – Lake Lavkozero and Lake Gangozero, located on the Zaonezhsky Peninsula, within the area of the Onega Ice Lake. In the recovered sediment sequences from studied lakes, two sediment units from top to down have been recognized: Holocene gyttja from small isolated lakes and Late Pleistocene sediments from the Onega Ice Lake, which are represented by varved clays and silts. Based on lithological data, a “pink horizon” of varved clays was identified. It is similar to one which found in the sediment

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10

Woszczyk, Michał, Wojciech Tylmann, Jan Jędrasik, et al. "Recent sedimentation dynamics in a shallow coastal lake (Lake Sarbsko, northern Poland): driving factors, processes and effects." Marine and Freshwater Research 65, no. 12 (2014): 1102. http://dx.doi.org/10.1071/mf13336.

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Despite the fact that sediment dynamics in shallow coastal lakes strongly influences lake water quality and is crucial for preserving good quality paleo-records from coastal zones, the depositional processes in coastal lakes have not been thoroughly recognised so far. The present study aims at investigating the relationship between lake water circulation and the distribution of surface sediments, identifying the postdepositional physical mechanisms affecting lake deposits, and estimating the intensity of sediment mixing in a coastal lake on the Baltic coast. Our approach includes analyses of s

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11

Nzekwe, Obinna P., Pierre Francus, Guillaume St-Onge, et al. "Recent sedimentation in three adjacent fjord-lakes on the Québec North Shore (eastern Canada): facies analysis, laminae preservation, and potential for varve formation." Canadian Journal of Earth Sciences 55, no. 2 (2018): 138–53. http://dx.doi.org/10.1139/cjes-2017-0070.

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This paper analyzes short gravity cores sampled along transects in three adjacent deep fjord-lakes (lakes Pentecôte, Walker, and Pasteur) on the Québec North Shore, eastern Canada, to evaluate the distribution of laminated sediments and potential for varve formation. Facies analysis based on lithological description, digital photos, CT-scan images, and bathymetric data allowed for the identification of four main sediment facies, namely laminated sediments, partially laminated sediments, bioturbated sediments, and massive sediments. Direct evidence that Lake Walker undergoes thermal stratificat

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12

Tretjakova, Rasma, and Andris Karpovičs. "MINERAL COMPOSITION OF SOME LATGALE LAKE SEDIMENTS." ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 20, 2019): 304. http://dx.doi.org/10.17770/etr2019vol1.4146.

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Our research is focused on sedimentological conditions and postdepositional changes of recent fine grained lake sediments. We used bulk sediment mineralogical composition and grain size distribution as indicators to identify sediment source areas and possible changes during Holocene. We analysed fine grained (clayey) sediments from three Latgale lakes - Zeili, Pauguļi and Plusons, situated in Latgale upland. Lake sediments cover Late Pleistocene glacial deposits – loam and sandy loam. Bulk mineral composition of 6 sediment samples was determined by X-ray diffraction (XRD). Sediments contained

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13

Tylmann, Wojciech, Paulina Głowacka, and Agnieszka Szczerba. "Tracking climate signals in varved lake sediments: research strategy and key sites for comprehensive process studies in the Masurian Lakeland." Limnological Review 17, no. 3 (2017): 159–66. http://dx.doi.org/10.1515/limre-2017-0015.

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AbstractLake sediments are excellent archives of environmental and climate change. Especially important are varved sediments which can provide high-resolution (annual) records of those changes. Process studies including limnological measurements, particle flux monitoring and analyses of sediment structures give an opportunity to explain relationships between meteorological conditions, in-lake processes and varve formation. In our study, three lakes were selected in the Masurian Lakeland: Lake Żabińskie, Łazduny and Rzęśniki. These relatively small and deep lakes contain well preserved biogenic

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14

Zhao, Chun, Fuyuan Ran, Sihong Liu, Liujiang Wang, and Chunzhen Fan. "Distribution Characteristics and Driving Mechanisms of Organic Matter in Sediment of Lakes in China: A Review." Water 17, no. 9 (2025): 1294. https://doi.org/10.3390/w17091294.

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Sediment is a core part of lake ecosystems, and its organic matter (OM) content is a key indicator of lake ecological health and regional carbon cycling. OM provides nutrients for phytoplankton and algae in water, thereby influencing the degree of lake eutrophication. However, excessively high OM content may trigger water eutrophication, alter sediment’s physical and chemical properties, and ultimately threaten the stability and health of ecosystems. This study innovatively selected Poyang Lake, Taihu Lake, Qinghai Lake, and Hulun Lake from China’s four major geographical regions to systematic

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15

Young, Thomas C., Joseph V. DePinto, James R. Rhea, and Richard D. Scheffe. "Calcite Dose Selection, Treatment Efficiency, and Residual Calcite Fate after Whole-Lake Neutralization." Canadian Journal of Fisheries and Aquatic Sciences 46, no. 2 (1989): 315–22. http://dx.doi.org/10.1139/f89-042.

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A modeling approach guided whole-lake neutralization treatments of two acidic Adirondack lakes and aided examination of treatment efficiency as measured by initial water column dissolution and calcite delivery to sediments, prediction of posttreatment water chemistry, and assessment of the fate of calcite deposited on sediments. The lake model incorporated both dissolution and sedimentation of calcite in a vertically segmented lake assumed to behave as a closed system. Observed short-term calcite dissolution exceeded predictions (75 versus 45%) because (1) dispersion and thermocline presence s

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16

Vyse, Stuart A., Ulrike Herzschuh, Gregor Pfalz, et al. "Sediment and carbon accumulation in a glacial lake in Chukotka (Arctic Siberia) during the Late Pleistocene and Holocene: combining hydroacoustic profiling and down-core analyses." Biogeosciences 18, no. 16 (2021): 4791–816. http://dx.doi.org/10.5194/bg-18-4791-2021.

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Abstract. Lakes act as important sinks for inorganic and organic sediment components. However, investigations of sedimentary carbon budgets within glacial lakes are currently absent from Arctic Siberia. The aim of this paper is to provide the first reconstruction of accumulation rates, sediment and carbon budgets from a lacustrine sediment core from Lake Rauchuagytgyn, Chukotka (Arctic Siberia). We combined multiple sediment biogeochemical and sedimentological parameters from a radiocarbon-dated 6.5 m sediment core with lake basin hydroacoustic data to derive sediment stratigraphy, sediment vo

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17

Myasnikova, Nadezda A., Alexander V. Orlov, Maxim S. Potakhin, and Dmitry A. Subetto. "GRAIN SIZE DISTRIBUTION OF BOTTOM SEDIMENTS IN SMALL LAKES OF THE SHOKSHA RIDGE, KARELIA, AS A PROXY FOR PALEO-HYDRODYNAMIC SEDIMENTATION ENVIRONMENTS." Географический вестник = Geographical bulletin, no. 2 (2024): 6–23. http://dx.doi.org/10.17072/2079-7877-2024-2-6-23.

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The paper examines the grain size distribution of bottom sediments of lakes in the Shoksha Ridge area, Karelia, to elucidate howdeglaciation and formation of the Onego Ice Lake basin proceeded. A sequence of bottom sediments of Lake Anashkino and two sediment sequences of Lake Rzhanoe were studied, and lithostratigraphy of the sediment cores was described. The grain size compositions of the 9.32-10.32m sequence from Lake Anashkino and the 2.5-6.52 m sequence from Lake Rzhanoye were analyzed. The study revealed features of the bottomsediment fractions distribution along the depth of occurrence.

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18

Kļaviņš, Māris, Ilga Kokorīte, Valērijs Rodinovs, and Maruta Jankevica. "Past human impact and pollutant loading reconstruction in Lake Engure as a tool for lake basin management." Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. 68, no. 1-2 (2014): 31–37. http://dx.doi.org/10.2478/prolas-2014-0003.

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Abstract Environmental pollution of lakes and rivers is considered as one of the most important environmental problems. Analysis of nutrient and trace element accumulation in sedimentary phases of lakes can reflect the overall regional pollution level, and the observed accumulation patterns of pollutants in sediment profiles can be used to reconstruct the history of anthropogenic impacts. As pollutants in sediments are associated with other substances, it is important not only to study total concentrations of pollutants, but also their speciation forms. The aim of this study was to describe ph

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19

Moreton, Steven G., Gunhild C. Rosqvist, Sarah J. Davies, and Michael J. Bentley. "Radiocarbon Reservoir Ages from Freshwater Lakes, South Georgia, Sub-Antarctic: Modern Analogues from Particulate Organic Matter and Surface Sediments." Radiocarbon 46, no. 2 (2004): 621–26. http://dx.doi.org/10.1017/s0033822200035669.

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Lake sediments have the potential to preserve proxy records of past climate change. Organic material suitable for radiocarbon dating often provides age control of such proxy records. Six shallow freshwater lakes on the sub-Antarctic island of South Georgia were investigated for carbon reservoir effects that may influence age-depth profiles from lake sediment records in this important region. Paired samples of particulate organic matter (POM) from the water column and surface sediment (bulk organic carbon) were analyzed by accelerator mass spectrometry 14C. POM in 4 lakes was found to be in equ

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20

Tu, Luyao, Paul Zander, Sönke Szidat, Ronald Lloren, and Martin Grosjean. "The influences of historic lake trophy and mixing regime changes on long-term phosphorus fraction retention in sediments of deep eutrophic lakes: a case study from Lake Burgäschi, Switzerland." Biogeosciences 17, no. 10 (2020): 2715–29. http://dx.doi.org/10.5194/bg-17-2715-2020.

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Abstract. Hypolimnetic anoxia in eutrophic lakes can delay lake recovery to lower trophic states via the release of sediment phosphorus (P) to surface waters on short timescales in shallow lakes. However, the long-term effects of hypolimnetic redox conditions and trophic state on sedimentary P fraction retention in deep lakes are not clear yet. Hypolimnetic withdrawal of P-rich water is predicted to diminish sedimentary P and seasonal P recycling from the lake hypolimnion. Nevertheless, there is a lack of evidence from well-dated sediment cores, in particular from deep lakes, about the long-te

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21

Leidonald, R., Z. A. Harahap, and A. Muhtadi. "The distribution of Siombak lake sediments, a tropical tidal lake in Indonesia." IOP Conference Series: Earth and Environmental Science 977, no. 1 (2022): 012117. http://dx.doi.org/10.1088/1755-1315/977/1/012117.

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Abstract Siombak Lake is one of Indonesia’s tropical tidal lakes located in Medan City, North Sumatra Province. This lake is very dynamic because the lake water level is fluctuating according to the Belawan waters’ tidal (Malacca Strait). This study aims to determine the distribution of sediments in Siombak Lake. The research was conducted from December 2018 - August 2019. The observation locations were taken at 8 points representing all depth layers. The technique used was the filtering analysis using the wet sieve method with stratified sediment filters in different diameters (4.75 mm, 1.7 m

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22

Yang, Yuyin, Ningning Li, Wei Wang, Bingxin Li, Shuguang Xie, and Yong Liu. "Vertical profiles of sediment methanogenic potential and communities in two plateau freshwater lakes." Biogeosciences 14, no. 2 (2017): 341–51. http://dx.doi.org/10.5194/bg-14-341-2017.

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Abstract. Microbial methanogenesis in sediment plays a crucial role in CH4 emission from freshwater lake ecosystems. However, knowledge of the layer-depth-related changes of methanogen community structure and activities in freshwater lake sediment is still limited. The present study was conducted to characterize the methanogenesis potential in different sediment-layer depths and the vertical distribution of microbial communities in two freshwater lakes of different trophic status on the Yunnan Plateau (China). Incubation experiments and inhibitor studies were carried out to determine the metha

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23

Amano, Koji, and Takehiko Fukushima. "On the Longitudinal and Vertical Changes in Lake Estuarine Sediments." Water Science and Technology 20, no. 6-7 (1988): 143–53. http://dx.doi.org/10.2166/wst.1988.0198.

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In order to obtain environmental information about lake water and watersheds, the vertical and longitudinal distributions of physical and chemical properties in lake sediments were investigated. The concentrations of several substances (e.g., nutrients, metals, and chemicals) in the sediments were determined at fifty sampling sites in sixteen shallow lakes in Japan. The vertical profiles of particle size, particle organic carbon, particle organic nitrogen, total phosphorus, some metals (Ti, Mn, Fe, Zn, and Cu), and LAS were analysed. Various sediment properties, such as the sedimentation condi

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Huang, Wei, Xing Chen, Kun Wang, and Xia Jiang. "Seasonal characteristics of phosphorus sorption by sediments from plain lakes with different trophic statuses." Royal Society Open Science 5, no. 8 (2018): 172237. http://dx.doi.org/10.1098/rsos.172237.

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Phosphorus (P) sorption in sediments plays a significant role in trophic status of a lake. This study investigated the characteristics of P sorption in sediments from three lakes with different trophic statuses (moderately eutrophic, lightly eutrophic and moderately trophic) through kinetic, batch equilibrium and thermodynamic experiments. Results show that pseudo-second-order kinetics best describe P sorption in sediments from the three lakes. Fitting by modified Langmuir and Freundlich isotherms indicates that the moderately trophic lake sediment has higher sorption capacity (maximum of 0.84

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Jiao, Li Ping, Xia Sun, and Yang Luo. "Chinese Arctic Yellow River Station Research Monitoring Program. 1. Polycyclic Aromatic Hydrocarbons in Sediment from Svalbard." Applied Mechanics and Materials 522-524 (February 2014): 25–33. http://dx.doi.org/10.4028/www.scientific.net/amm.522-524.25.

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Surface sediments of the west coast of Svalbard near Ny-Ålesund Spitsbergen were collected. PAHs of lake sediments (mean: 260, range: 11 - 1100 ng/g dry wt) were higher than previously report of surface lake sediment in Svalbard 1995, suggesting significant PAH contamination is occurring due to long-term atmospheric transport and local coal mining and fossil fuel sources, pointing to the role of Arctic lakes as potential reservoirs of semi-volatile organic compounds, including PAHs. Compound-specific analysis revealed different PAH patterns between Svalbard lakes and European high mountain lak

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Astles, Brittany C., John Chételat, Michael J. Palmer, and Jesse C. Vermaire. "Experimental investigation of short-term warming on arsenic flux from contaminated sediments of two well-oxygenated subarctic lakes." PLOS ONE 17, no. 12 (2022): e0279412. http://dx.doi.org/10.1371/journal.pone.0279412.

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Legacy arsenic (As) contamination from past mining operations remains an environmental concern in lakes of the Yellowknife area (Northwest Territories, Canada) due to its post-depositional mobility in sediment and potential for continued remobilization to surface waters. Warmer temperatures associated with climate change in this subarctic region may impact As internal loading from lake sediments either by a direct effect on sediment porewater diffusion rate or indirect effects on microbial metabolism and sediment redox conditions. This study assessed the influence of warmer temperatures on As

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Harasimiuk, Andrzej, Bogumił Wicik, and Tomasz Grabowski. "The lake deposits in Płock Basin (case studies of Lakes Rakutowskie and Żłoby)." Limnological Review 10, no. 1 (2010): 23–28. http://dx.doi.org/10.2478/v10194-011-0003-7.

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The lake deposits in Płock Basin (case studies of Lakes Rakutowskie and Żłoby)Reconstruction of development of Lakes Rakutowskie and Żłoby in the late Pleistocene and Holocene was the aim of this research. Analysis of content of calcium carbonate, organic matter and C14 datings (7 samples) were done for two cores of sediments of 750 cm long. An average rate of accumulation was counted. Sediments of Lake Rakutowskie show homogeneity along the core which indicates similarity of sedimentation conditions. Sediments of Lake Żłoby were diversified and show variety related to cyclic changes. A common

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Srdoč, Dušan, Bogomil Obelić, Nada Horvatinčić, et al. "Radiocarbon Dating of Lake Sediment from Two Karst Lakes in Yugoslavia." Radiocarbon 28, no. 2A (1986): 495–502. http://dx.doi.org/10.1017/s0033822200007633.

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Samples of sediment cores from two lakes in the karst area of northwest Yugoslavia were analyzed. Both Lakes Kozjak and Prošće are in the Plitvice National Park, Central Croatia. 14C dating, sedimentologic, seismic, and isotopic studies, and distribution of diatoms are presented.14C dating of lake marl revealed a uniforn sedimentation rate in Lake Prošće as opposed to Lake Kozjak. Both lake sediments belong to the Holocene period. 14C dating of lake sediment is in agreement with seismic profiles, sedimentologic analysis, and diatom frequency measurements both in an undisturbed as well as in a

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Rowan, D. J., J. Kalff, and J. B. Rasmussen. "Profundal Sediment Organic Content and Physical Character Do Not Reflect Lake Trophic Status, but Rather Reflect Inorganic Sedimentation and Exposure." Canadian Journal of Fisheries and Aquatic Sciences 49, no. 7 (1992): 1431–38. http://dx.doi.org/10.1139/f92-158.

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An analysis of profundal sediment data from 83 north-temperate lakes shows that increasing inorganic sedimentation and exposure (or lake surface area) results in lower organic content and water content, and greater bulk density. Because sedimentation rates are unavailable for most lakes, we estimate sedimentation rates from readily available catchment sediment loads using a mass-balance model. The mass-balance estimate of sediment retention (per square metre of depositional zone) is an excellent predictor of measured inorganic sedimentation rates for a data set covering 19 lakes (R2 = 0.92). M

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Potakhin, M. S., N. A. Belkina, and D. A. Subetto. "The Lake Onego watershed: morphology of lakes and classification of the bottom sediments." Limnology and Freshwater Biology, no. 4 (2022): 1526–28. http://dx.doi.org/10.31951/2658-3518-2022-a-4-1526.

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Abstract. The data on the lake morphometry and sediment lithostratigraphy of the Lake Onego watershed were collected. The classification of lakes was carried out according to the genetic features of relief. Four types of the lakes have been identified for the catchment area. The structural features of lake basins and bottom sediments were determined for each type of lakes.

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Gonsiorczyk, Thomas, Peter Casper, and Rainer Koschel. "Phosphorus-binding forms in the sediment of an oligotrophic and an eutrophic hardwater lake of the Baltic Lake District (Germany)." Water Science and Technology 37, no. 3 (1998): 51–58. http://dx.doi.org/10.2166/wst.1998.0173.

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The vertical distribution of various phosphorus (P)-binding forms, associated potential P-binding partners and the composition of dry material were investigated in the bottom sediments of the dimictic oligotrophic Lake Stechlin and the dimictic eutrophic Lake Feldberger Haussee. Reductant soluble P (Fe- and Mn-bound) at the sediment surface (0−1 cm) was considerably higher in the oligotrophic Lake Stechlin (1.29 g kg−1) than in the eutrophic Lake Haussee (0.32 g kg−1). The amounts of dissolved, loosely adsorbed, metal oxide- and calcium carbonate bound P were higher in the eutrophic lake. The

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32

Wang, W. W., X. Jiang, B. H. Zheng, et al. "Composition, mineralization potential and release risk of nitrogen in the sediments of Keluke Lake, a Tibetan Plateau freshwater lake in China." Royal Society Open Science 5, no. 9 (2018): 180612. http://dx.doi.org/10.1098/rsos.180612.

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The lakes distributed in the Tibetan Plateau constitute a lake group with the highest altitude, largest lakes and largest area in the world and are important in global climate and environmental effects. Freshwater lakes in the Tibetan Plateau possess high ecological values and high vulnerability. The migration and transformation of nitrogen in sediments are critical to lake ecosystems, but information on sedimentary nitrogen in the freshwater lakes in the Tibetan Plateau is limited. A case study was conducted in Keluke Lake, China, to reveal the effects of sedimentary nitrogen on water quality

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Baranov, Viktor, Jörg Lewandowski, and Stefan Krause. "Bioturbation enhances the aerobic respiration of lake sediments in warming lakes." Biology Letters 12, no. 8 (2016): 20160448. http://dx.doi.org/10.1098/rsbl.2016.0448.

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While lakes occupy less than 2% of the total surface of the Earth, they play a substantial role in global biogeochemical cycles. For instance, shallow lakes are important sites of carbon metabolism. Aerobic respiration is one of the important drivers of the carbon metabolism in lakes. In this context, bioturbation impacts of benthic animals (biological reworking of sediment matrix and ventilation of the sediment) on sediment aerobic respiration have previously been underestimated. Biological activity is likely to change over the course of a year due to seasonal changes of water temperatures. T

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34

Rao, S. S., M. D. Dickman, and H. G. Thode. "Isotopic and Diatom Evidence of Bacterial Sulphate Reduction in Sediments." Water Quality Research Journal 24, no. 2 (1989): 215–32. http://dx.doi.org/10.2166/wqrj.1989.013.

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Abstract Sulphur contents and sulphur isotope ratios (δ34 So/00 values) in deep sediments (10–12 cms; circa 50–100 years before the present) and surface sediments (0–2 cm; circa 0–10 years before the present) from eight lakes located north of Lake Superior, Canada indicated that surface sediments had a significantly higher sulphur content (largely organic sulphur) per gram dry weight and a lower sulphur isotope ratio than the deeper layers. The increased sulphur content and decreased sulphur isotope ratios (δ34 S0/00 values) in the surficial sediments were much greater for the lakes near and d

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35

Pazdur, Anna, M. F. Pazdur, Tomasz Goslar, Bogumił Wicik, and Maurice Arnold. "Radiocarbon Chronology of Late Glacial and Holocene Sedimentation and Water-Level Changes in the Area of the Gościąż Lake Basin." Radiocarbon 36, no. 2 (1994): 187–202. http://dx.doi.org/10.1017/s0033822200040492.

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We obtained 14C ages on samples of lake marl and other sediments from cores taken in Gościąż Lake and its environs. Comparison of 14C dates of bulk samples of laminated sediment with varve chronology and available AMS dates of terrestrial macrofossils indicates a reservoir correction of 2000 ± 120 yr for the basal series of lake sediments. 14C dates obtained on peat layers underlying the oldest lacustrine sediments in Gościąż and other lakes consistently locate the beginning of organogenic sedimentation in this area at ca. 13 ka bp. We distinguished three periods of lacustrine gyttja sedimenta

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36

Belzile, Nelson, Helen A. Joly, and Hongbo Li. "Characterization of humic substances extracted from Canadian lake sediments." Canadian Journal of Chemistry 75, no. 1 (1997): 14–27. http://dx.doi.org/10.1139/v97-003.

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Humic substances (HS) were extracted from the sediments of four Sudbury area lakes, namely, Tilton, Clearwater, Silver, and Ramsey Lakes, with the aid of 0.1 M Na4P2O7 and 0.5 M NaOH solutions. The HS (humic and fulvic acids) were purified and characterized using the methods of elemental analysis, visible spectroscopy (E4/E6 ratio), FTIR, and solid-state 13C CPMAS NMR. A substantial amount of information with regard to the composition and chemical nature of lake sediment HS was obtained. The results obtained for the Sudbury area lake sediments were compared with one another and with HS from ot

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37

Shin, I. Chan, Tetsuji Akatsuka, Hisayuki Azumi, et al. "Grain size distribution and chemistry of the brackish Lake sediment in Korea." Environmental Engineering Research 26, no. 5 (2020): 200365–0. http://dx.doi.org/10.4491/eer.2020.365.

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To determine the grain size distribution and chemical characteristics of bottom surface sediments in shallow brackish lagoons, we studied sediment samples collected from the entire horizontal lake area and in vertical profiles from three stations in Lakes Youngrang and Hwajinpo, on the eastern coast of Korea. Vertical and horizontal grain size distributions of the bottom sediments indicated predominantly sand- and silt in both lakes. The vertical distribution of C/N ratios ranged from 6.14 to 11.92 in Lake Youngrang, and 6.74 to 12.34 in Lake Hwajinpo. The horizontal distribution of C/N ratios

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38

Rada, Ronald G., David E. Powell, and James G. Wiener. "Whole-Lake Burdens and Spatial Distribution of Mercury in Surficial Sediments in Wisconsin Seepage Lakes." Canadian Journal of Fisheries and Aquatic Sciences 50, no. 4 (1993): 865–73. http://dx.doi.org/10.1139/f93-099.

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We quantified total mercury in surficial sediments (uppermost 5 cm) of six small seepage lakes. Fifty cores were taken from each lake, based on a random sampling design stratified by water depth. Volumetric concentrations (mass per volume of wet sediment) more accurately portrayed the depth distribution of mercury in the lakes than did dry-weight concentrations, which underrepresented the significance of the shallow-water sediments as a reservoir of potentially available mercury. Estimates of whole-lake burdens (masses) of mercury in the surficial sediment, which represent the maximum amount o

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39

Wu, Dun, Hai Liu, Jian Wu, and Xia Gao. "Spatial Distribution, Ecological Risk Assessment and Source Analysis of Heavy Metals Pollution in Urban Lake Sediments of Huaihe River Basin." International Journal of Environmental Research and Public Health 19, no. 22 (2022): 14653. http://dx.doi.org/10.3390/ijerph192214653.

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Heavy metals in freshwater lake sediments often exist in various chemical forms. However, the investigation and evaluation of heavy-metal elements in the sediments of the study area have not been reported, and there is a lack of objective understanding of the concentration level of heavy-metal elements. Therefore, this study is the first to report the concentrations, sources, and potential ecological risks of heavy metals in the sediments of Chengdong Lake and Chengxi Lake in Huoqiu County, Anhui Province, China. The spatial distribution, pollution characteristics, potential pollution sources,

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40

Vincent, S. G. T., J. H. Salahudeen, P. S. Godson, et al. "Environmental factors influencing methanogenic activity in two contrasting tropical lake sediments." Journal of Environmental Biology 42, no. 2 (2021): 211–19. http://dx.doi.org/10.22438/jeb/42/2/mrn-1413.

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Aim: To investigate the influence of environmental variables on the abundance and activity of methanogenic archaea (MA) in Akkulam-Veli and Vellayani Lake sediments. Methodology: Sediment and overlying water samples (n=5 each) were collected from Veli and Vellayani lakes of Thiruvananthapuram, Kerala. Samples were analysed for environmental variables using standard protocols. Multivariate analysis was done to study the influence of environmental variables on abundance and activity of MA. Results: Environmental variables of overlying water and sediment showed significant variation between the t

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41

Wu, Xue, Yancai Wang, Yirong Chang, Zhengzheng Hao, Lixin Jiao, and Rui Zhang. "Research Progress on the Occurrence, Adsorption, and Release of Phosphorus in the Sediments of Dianchi Lake and Prospects for Its Control." Water 17, no. 11 (2025): 1652. https://doi.org/10.3390/w17111652.

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Phosphorus plays a key role in water eutrophication. The release of endogenous phosphorus from sediments maintains eutrophication in Dianchi Lake. This study aimed to summarize and analyze the research trends, occurrence characteristics, adsorption and release characteristics, influencing factors, and prospects of internal phosphorus pollution control in Dianchi Lake based on a literature search and data integration. The results revealed that sediment phosphorus in Dianchi Lake has been widely studied. From previous studies, the total phosphorus (TP) content and various forms of phosphorus in

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42

Yuan, Xu Yin, Quan Liu, Ji Zhou Li, Jun Feng Ji, and Chang Ping Mao. "Risk Assessment of Organochlorine Compounds in Water and Surface Sediments from Taihu Lake and Nanjing Section of Changjiang, China." Advanced Materials Research 356-360 (October 2011): 624–29. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.624.

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Samples of surface water and sediment were collected in Taihu Lake and Nanjing section of Changjiang. Organochlorine compounds(OCCs) of samples were detected to investigate the characteristics and ecological risk of them in the lake and river. The concentrations of OCCs in water of Nanjing section of Changjiang were higher than those in Taihu Lake, but the concentrations of OCCs in sediments were higher in Taihu Lake. HCHs of Taihu sediments were relatively enriched, indicating the agricultural source of compounds. PCBs of Changjiang sediments were higher compared to Taihu sediments, denoting

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43

Kolpakova, Marina. "Heavy metal contamination in bottom sediments of saline endorheic lakes of Kulunda and Barabinsk steppes (Western Siberia, Russia)." E3S Web of Conferences 80 (2019): 03009. http://dx.doi.org/10.1051/e3sconf/20198003009.

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The article presents the results of assessment of heavy metals contamination in bottom sediments of saline lakes located on the territory of Kulunda and Barabinsk steppes of Western Siberia, Russia. The territory is characterized by large amount of lakes (more than 5000), including the Chany lake, which is the biggest lake of south of Western Siberia. By calculation the geochemical parameters, such as Enrichment factor, Contamination factor, Geoaccumulation index, Pollution load index, the common level of bottom sediments was classified as unpolluted. However, in comparison with average level

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44

Shaw, J. F. H., and E. E. Prepas. "Temporal and Spatial Patterns of Porewater Phosphorus in Shallow Sediments, and its Potential Transport into Narrow Lake, Alberta." Canadian Journal of Fisheries and Aquatic Sciences 46, no. 6 (1989): 981–88. http://dx.doi.org/10.1139/f89-127.

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During 1985 and 1986, summer and spatial patterns of porewater soluble reactive phosphorus (SRP) from sediments ≤ 15-m depth were examined at Narrow Lake, a deep, mesoeutrophic Albertan lake. At three sites (different in depth and macrophyte colonization), trends in porewater SRP concentrations ([SRP]) in the top 5 cm of the sediment from May to August varied, possibly due to root uptake of SRP by macrophytes. At a depth of 5 m, mean (in the top 5 cm of the sediment) and variance of porewater [SRP] at one site (<0.15 m2) were the same as over the entire lake. Excluding data from macrophyte

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45

Heslop, J. K., K. M. Walter Anthony, A. Sepulveda-Jauregui, et al. "Thermokarst lake methanogenesis along a complete talik profile." Biogeosciences 12, no. 14 (2015): 4317–31. http://dx.doi.org/10.5194/bg-12-4317-2015.

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Abstract. Thermokarst (thaw) lakes emit methane (CH4) to the atmosphere formed from thawed permafrost organic matter (OM), but the relative magnitude of CH4 production in surface lake sediments vs. deeper thawed permafrost horizons is not well understood. We assessed anaerobic CH4 production potentials from various depths along a 590 cm long lake sediment core that captured the entire sediment package of the talik (thaw bulb) beneath the center of an interior Alaska thermokarst lake, Vault Lake, and the top 40 cm of thawing permafrost beneath the talik. We also studied the adjacent Vault Creek

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46

Heslop, J. K., K. M. Walter Anthony, A. Sepulveda-Jauregui, et al. "Thermokarst-lake methanogenesis along a complete talik profile." Biogeosciences Discussions 12, no. 6 (2015): 4865–905. http://dx.doi.org/10.5194/bgd-12-4865-2015.

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Abstract. Thermokarst (thaw) lakes emit methane (CH4) to the atmosphere formed from thawed permafrost organic matter (OM), but the relative magnitude of CH4 production in surface lake sediments vs. deeper thawed permafrost horizons is not well understood. We assessed anaerobic CH4 production potentials from various depths along a 590 cm long lake sediment core that captured the entire sediment package of the talik (thaw bulb) beneath the center of an interior Alaska thermokarst lake, Vault Lake, and the top 40 cm of thawing permafrost beneath the talik. We also studied the adjacent Vault Creek

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47

Pu, Wenmiao, Mingyu Wang, Dan Song, et al. "Bacterial Diversity in Sediments from Lianhuan Lake, Northeast China." Microorganisms 12, no. 9 (2024): 1914. http://dx.doi.org/10.3390/microorganisms12091914.

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Lake microbiota play a crucial role in geochemical cycles, influencing both energy flow and material production. However, the distribution patterns of bacterial communities in lake sediments remain largely unclear. In this study, we used 16S rRNA high-throughput sequencing technology to investigate the bacterial structure and diversity in sediments across different locations (six independent lakes) within Lianhuan Lake and analyzed their relationship with environmental factors. Our findings revealed that both the alpha and beta diversity of sediment bacterial communities varied significantly a

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48

Afzal, Shahzad, Mohammad Younas, and Khadim Hussain. "Selenium Speciation of Surface Sediments from Saline Lakes of the Soan-Sakesar Valley Salt-Range, Pakistan." Water Quality Research Journal 34, no. 4 (1999): 575–88. http://dx.doi.org/10.2166/wqrj.1999.029.

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Abstract The chemical species of selenium from the surface sediments from three eutroph-ic lakes of the Soan-Sakesar Valley were examined. The major objectives of the study were to examine the oxidation states of selenium in the lake sediments. The following selenium concentrations were observed from lakes Uchhali, Khabbaki and Jahlar, respectively: total selenium: 4.03, 1.55 and 1.4 mg/kg; Se+VI: 0.86, 0.39 and 0.31 mg/kg; Se+IV: 0.95, 0.27 and 0.25 mg/kg; Se-II:1.15, 0.45 and 0.33; and Se0: 1.17, 0.48 and 0.53 mg/kg. Lake sediments have higher nitrogen (0.04—0.35% of dry weight) and phosphor

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49

Schiff, Sherry L., and Robert F. Anderson. "Limnocorral Studies of Chemical and Biological Acid Neutralization in Two Freshwater Lakes." Canadian Journal of Fisheries and Aquatic Sciences 44, S1 (1987): s173—s187. http://dx.doi.org/10.1139/f87-293.

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Twenty-nine 1 m diameter limnocorrals were installed in two Canadian Shield lakes to examine the relative importance of individual acid neutralization processes. Once the water column alkalinity was depleted, the within-lake alkalinity production processes were confined to the lake sediments. The flocculent organic-rich sediments of a shallow dystrophic lake (Lake 114) neutralized acid at a significantly greater rate than the sandy littoral sediments of an oligotrophy lake (Lake 302). Since the water column alkalinity of Lake 114 is much lower than Lake 302, ambient alkalinity is not a good pr

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50

Liu, Bo, Xiaofei Zhang, Yi Tong, et al. "Quantification of Nutrient Fluxes from Sediments of Lake Hulun, China: Implications for Plateau Lake Management." Sustainability 15, no. 11 (2023): 8680. http://dx.doi.org/10.3390/su15118680.

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Dramatic changes in lake water conditions may induce sensitive feedback in sediments, such as the release of phosphate and ammonia. There is a lack of the understanding of sediment nutrient release fluxes and their responses to various environmental factors in plateau lakes. In this study, nutrient contents in the water and sediment, sediment nutrient release rates, and their responses to various influential factors in a steppe shallow plateau lake, Lake Hulun, China, were investigated. Sediment is a large store of nutrients, with bioavailable phosphorus of 555 mg kg−1 in surface lake sediment

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