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Tesis sobre el tema "Lake sediments"

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Publicado: 4 de junio de 2021
Última modificación: 25 de julio de 2025

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1

Olli, Gull. "Waterborne sediment and pollutant transport into lakes and accumulation in lake sediments /." Stockholm : Department of Physical Geography and Quaternary Geology, Stockholm University, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-8302.

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2

Travers, Sarah. "Toxicity of Lake Sediments." Thesis, Ulster University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487669.

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The profundal sediment of many lakes is contaminated by heavy metals and persistent organic pollutants (POPs) deposited from the atmosphere, yet there has been little assessment of the biological effects of these toxicants. A Tier I sediment ecological risk assessment of profundal lake sediment that covers the range of contamination in the UK and Ireland was completed. Three laboratory sediment bioassays were used, Daphnia magna 7-day survival and reproduction, Gammarus pulex 14-day survival and growth and Chironomus riparius 10-day survival and growth/reproduction, and the concentrations of s
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3

Olago, Daniel Ochieng. "Late Quaternary lake sediments of Mount Kenya, Kenya." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296036.

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4

Frappier, Monique G. "Late-glacial, fine-resolution pollen and sediment analyses of Little Dyke Lake sediments, Central Nova Scotia." Thesis, University of Ottawa (Canada), 1996. http://hdl.handle.net/10393/10247.

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A detailed analyses of Little Dyke Lake basal sediments revealed two environmental disturbances occurred during the late-glacial. These disturbances were correlated to the previously reported Killarney and Younger Dryas climatic oscillations of the Maritimes. Organic accumulation commenced at about 11 500 yrs BP. Macrofossil and pollen evidence indicate that a forest-tundra including abundant juniper and spruce krummholz had developed 300-600 years after deglaciation. Changes in the vegetation composition were followed by an increased inwash of coarser, siltier sediment. With climate ameliorat
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5

Gälman, Veronika. "Varved lake sediments and diagenetic processes." Doctoral thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-5724.

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Varved (annually laminated) sediments are of great interest for inference of past environmental conditions, as they provide dated records with high time resolution. After deposition, the sediment varves are affected by diagenesis; i.e., chemical, physical and biological changes that occur within the sediment. An important premise when reconstructing past environmental conditions using lake sediments is that the signal of interest is preserved in the sediment. In this thesis I have used a unique collection of ten stored freeze cores of varved lake sediment from Nylandssjön in northern Sweden, c
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6

Schmitt, Harold Rolf. "Mobilization of gold into lake sediments." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6767.

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Geochemical exploration methods are able to contribute significantly to the detection of concealed Au mineralization in glaciated terrains. Gold analyses of lake sediments from the glaciated Canadian Shield have been used since the mid-1980s to explore for Au mineralization. For lake sediments to be an effective indicator of Au mineralization, the element must migrate in solution or adsorbed on suspensates in the boreal forest zone where low relief and disorganized drainage restricts dispersal and concentration in clastic form. Organic-rich profundal lake sediments often contain anomalous Au c
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7

Den, Heyer Cornelia E. "Organic matter mineralization in lake sediments : a within and among lake study." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23996.

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Organic matter mineralization by sediment bacteria was measured by the accumulation of DIC + CH$ sb4$ in the water overlying intact cores taken from littoral and profundal sediments of 9 lakes. The variability in areal carbon mineralization was much greater within lakes than among lakes, with the rate of organic matter mineralization in littoral sediments, on average, 3-fold higher than in the deeper sediments.<br>Sixty percent of the variation in summer carbon mineralization rates is explained by site depth, a surrogate variable which incorporates the effect of temperature and may also be ref
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8

Rowan, David J. "The distribution, texture and trace element concentrations of lake sediments /." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=70361.

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Hypotheses regarding the distribution, texture and trace element concentrations of lake sediments were tested by empirical analyses of multi-lake data sets (52 to 83 lakes). Sediment distribution was best characterized by the deposition boundary depth (DBD), the abrupt transition from coarse- to fine-grained sediments. The DBD can now be predicted from either empirical models or empirical-theoretical simplifications of wave of sediment threshold theory, both in terms of exposure (or fetch) and bottom slope. The texture (organic content, water content and bulk density) of profundal sediments wa
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9

Zastepa, Arthur. "Fate and Persistence of Microcystin Congeners in Lakes and Lake Sediments." Thesis, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30453.

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Cyanobacterial blooms and their toxins are a major water quality and potential health risk around the world. This thesis developed an analytical method for microcystin congeners in sediments in order to examine their fate in lakes and establish the history of toxin-producing cyanobacteria in relation to environmental change using lake sediments. A novel method for both intra- and extracellular microcystins in lake sediments was developed, consisting of accelerated solvent extraction, hydrophilic-lipophilic balance solid phase extraction and multiple reaction monitoring-based HPLC-MS/MS quantit
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10

Gudasz, Cristian. "Boreal Lake Sediments as Sources and Sinks of Carbon." Doctoral thesis, Uppsala universitet, Limnologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-150709.

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Inland waters process large amounts of organic carbon, contributing to CO2 and CH4 emissions, as well as storing organic carbon (OC) over geological timescales. Recently, it has been shown that the magnitude of these processes is of global significance. It is therefore important to understand what regulates OC cycling in inland waters and how is that affected by climate change. This thesis investigates the constraints on microbial processing of sediment OC, as a key factor of the carbon cycling in boreal lakes. Sediment bacterial metabolism was primarily controlled by temperature but also regu
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11

Tennant, Richard Kenneth. "Genomic analysis of microfossils in lake sediments." Thesis, University of Exeter, 2015. http://hdl.handle.net/10871/20649.

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Botryococcus braunii is a microscopic, colonial green alga that may be found in fresh and brackish waters throughout the globe. B. braunii is unique in that it constitutively synthesises and secretes copious amounts of various long-chain (C23-C40) hydrocarbons, generically termed “botryococcenes”. Botryococcanes, the hydrogenated forms of botryococcenes, comprise 1% of the fossil hydrocarbons found in petroleum deposits and in oil-shales. Microfossils identified as Botryococcus by optical and scanning electron microscopy are also abundant in these strata, but the actual identity and precise re
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12

Hoverson, Darrin. "Phosphorus release from sediments in Shawano Lake, Wisconsin /." Link to full-text, 2008. http://epapers.uwsp.edu/thesis/2008/Hoverson.pdf.

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Thesis (M.S.)--University of Wisconsin--Stevens Point, 2008.<br>Submitted in partial fulfillment of the requirements of the degree Master of Science in Natural Resources (Water Resources), College of Natural Resources. Includes bibliographical references (leaves 46-53).
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13

Mellicant, Emily. "Geochemical signatures of parent materials and lake sediments in northern Minnesota." Thesis, Kansas State University, 2017. http://hdl.handle.net/2097/35446.

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Master of Arts<br>Department of Geography<br>Kendra K. McLauchlan<br>The importance of local parent material has been recognized as a fundamental control on the geochemistry of lake sediments, but there have been relatively few broad-scale surveys of catchment sources of terrigenous lake sediments. In this paper, I present a geochemical study of catchment parent materials and lake sediments from four lakes in Northern Minnesota. Similar climate and vegetation conditions are present at all four lakes, which vary mainly in catchment parent material and lake morphometry. Geochemical data includ
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14

Owenson, Gerald G. "Obligately anaerobic alkaliphiles from Kenya soda lake sediments." Thesis, University of Leicester, 1997. http://hdl.handle.net/2381/29758.

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During the month of December 1992, an expedition was undertaken to collect anaerobic sediment samples from alkaline lakes of the East African Rift Valley to Kenya. During this expedition, eleven samples were collected from the four non-saline, northern lakes (Lake Bogoria, Lake Nakuru, Lake Elmenteita and Lake Sonachi). A further five samples were obtained from the hypersaline Lake Magadi. Utilising an array of media, the isolation of alkaliphilic, obligate anaerobes, representing one of the major undescribed constituents of the trophic network, was attempted. Extensive investigations into the
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15

Richmond, Kelly-Anne. "Paleolimnological analysis of sediments from Killarney Lake, Manitoba." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq23475.pdf.

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16

Hales, Philip. "Inorganic geochemistry of tropical lake and swamp sediments." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357524.

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17

Scandella, Benjamin P. (Benjamin Paul). "Spatiotemporal variability of methane ebullition from lake sediments." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104157.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2016.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 130-140).<br>Methane is a potent greenhouse gas, and natural sources to the atmosphere include inland waterways and shallow oceans. However, the magnitude of these emissions and their potential for feedbacks with climate change remai
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18

Braisby, John David James. "Magnetic properties of Mexican soils and lake sediments." Thesis, University of Edinburgh, 2001. http://hdl.handle.net/1842/12647.

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This study addresses two topics in environmental magnetism, i) the magnetic unmixing of lake sediments in terms of catchment samples and, ii) a connection between soil magnetic properties and annual rainfall. Soil and lake sediment cores from Mexico provided the material used. Palaeolimnology facilities the understanding of past environments by the analysis of lake sediments. Many palaeolimnological techniques are both time consuming and destructive. Analysis of pollen and diatoms require an expert to identify and count hundreds of pollen grains or diatoms, for each core horizon to be characte
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19

Peinerud, Elsa. "Diatom silica in lake sediments and suspended matter." Licentiate thesis, Luleå tekniska universitet, 1997. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-25653.

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20

Scandella, Benjamin P. (Benjamin Paul). "Numerical modeling of methane venting from lake sediments." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62088.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2010.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (p. 91-96).<br>The dynamics of methane transport in lake sediments control the release of methane into the water column above, and the portion that reaches the atmosphere may contribute significantly to the greenhouse effect. The observed dynamic
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21

Boygle, Jane E. "Tephra in lake sediments : an unambiguous geochronological marker?" Thesis, University of Edinburgh, 1995. http://hdl.handle.net/1842/20193.

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This thesis has three aims: (1) to construct tephrochronologies on large and small scales at sites in Sweden and Iceland; (2) to assess the effects of erosional and depositional processes on the nature and distribution of tephra in the sedimentological record; (3) to use these case studies to propose a model of the deposition of tephra in lakes. The Swedish Timescale based on the annually laminated sediments (varves) has recently been linked to the present. To test the chronology, traces of volcanic glass (tephra) from five historical eruptions of Icelandic volcanoes were sought within relevan
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22

McLean, Donald C. H. "Magnetic and sedimentological analyses of quaternary lake sediments from the English Lake District." Thesis, University of Bedfordshire, 1991. http://hdl.handle.net/10547/600845.

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Results of mineral magnetic, mobile clement, and granulometric analyses of Holocene sediments from Buttermere and Crummock Water (two closely-linked lakes in the north-west of the English Lake District) are presented. These are used to: (1) identify effects of internal (lacustrine) and external (catchment) controls on sedimentation; (2) establish catchment source-lake sediment linkages and assess the value of mineral magnetic techniques in palaeolimnological studies; (3) identify major catchment environmental changes. Analyses of lake sediment fabrics (using sediment thin sections, SEM clay fl
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23

Demory, François. "Paleomagnetic dating of climatic events in Late Quaternary sediments of Lake Baikal (Siberia)." Phd thesis, Universität Potsdam, 2004. http://opus.kobv.de/ubp/volltexte/2005/181/.

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Der Baikalsee ist ein ideales Klimaarchiv für die Mitte Eurasiens. In dieser Arbeit wurde gesteinsmagnetische und paleomagnetische Analysen an hemipelagischen Sequenzen von vier Lokationen analysiert. Die Kerne erreichen ein Alter von maximal 300 ky. In Kombination mit TEM, XRD, XRF und geochemischen Analysen zeigt die gesteinsmagnetische Studie, dass detritischer Magnetit das magnetische Signal der glazialen Sedimente dominiert. Die magnetischen Signale der interglazialen Sedimente wurden durch diagenetische Prozesse verändert. Mittels HIRM können Hämatit und Goethit quantifiziert werden. Di
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24

Demory, François Tribovillard Nicolas Oberhänsli Roland. "Paleomagnetic dating of climatic events in late quaternary sediments of Lake Baikal (Siberia)." Villeneuve d'Ascq : Université des sciences et technologies de Lille, 2007. https://iris.univ-lille1.fr/dspace/handle/1908/338.

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Reproduction de : Thèse de doctorat : Dynamique et environnement sédimentaires : Lille 1 : 2004. Reproduction de : Doctoral thesis : Naturwissenschaften : Universität Potsdam : 2004.<br>Thèse en cotutelle. N° d'ordre (Lille 1) : 3513. Résumé en anglais, en allemand et en français. Titre provenant de la page de titre du document numérisé. Bibliogr. p. 91-101.
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25

Väisänen, T. (Tero). "Sedimentin kemikalointikäsittely:tutkimus rehevän ja sisäkuormitteisen järven kunnostusmenetelmän mitoituksesta sekä sen tuloksellisuuden mittaamisesta." Doctoral thesis, University of Oulu, 2009. http://urn.fi/urn:isbn:9789514292989.

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Abstract There are many methods for the restorating a eutrophicated lake. This study has concentrated on chemical treatment of the sediment and the restoration measurements. This study is divided into three parts: studies of the chemical restoration of study lakes, the optimization of the sediment chemical restoration method, and the evaluation of the method effectiveness of the lake restoration. According to the results, it is possible to adsorb phosphorus to the sediment and keep it adsorbed, but chemical treatment will not improve the long term phosphorus adsorption capacity of the sediment
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26

Haring, Peter G. "The nature of heavy metal contamination in organic lake sediments near the Buchans massive sulphide base metal mines, Central Newfoundland /." Internet access available to MUN users only, 2002. http://collections.mun.ca/u?/theses,25133.

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27

Zale, Rolf. "Lake sediments around the Antarctic Peninsula : archives of climatic and environmental changes." Doctoral thesis, Umeå universitet, 1993. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-96890.

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Lakes and lake sediments from four areas around the Antarctic Peninsula are described. The concentrations of trace metals in sediment are found to be a useful tool in distinguishing between the different sedimentary phases during a transition from marine to limnic environment. A tephrochronology based on Deception Island tephra is developed, and used to cross date sediments from different lakes in order to overcome the radiocarbon dating problem of the area. The fluctuating concentrations of copper and phosphorus from penguin guano in the sediment of Lake Boeckella are used as a proxy for the
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28

Smith, Lydia. "Missisquoi Bay Sediment Phosphorus Cycling: the Role of Organic Phosphorus and Seasonal Redox Fluctuations." ScholarWorks @ UVM, 2009. http://scholarworks.uvm.edu/graddis/217.

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Missisquoi Bay, Lake Champlain is a eutrophic, northern shallow freshwater bay that experiences toxic cyanobacteria blooms during the summer months, largely as result of high nutrient (P and N) loading from the agricultural watershed. The sediments, which contain minerals that readily sorb P, can act as a sink or source of water column nutrients. Phosphorus, both inorganic and some organic forms, sorbs to metal oxides at neutral pH in the sediment, thus P release into overlying and pore water can be significantly affected by the reduction and subsequent solubilization of these oxides. This stu
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29

Ridenoure, Brian D. "Evaluation and enhancement of the effectiveness of sediment trapping and retention devices installed on the Nevada side of Lake Tahoe /." abstract and full text PDF (UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1451078.

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Thesis (M.S.)--University of Nevada, Reno, 20007.<br>"December 2007." Includes bibliographical references (leaves 122-124). Library also has microfilm. Ann Arbor, Mich. : ProQuest Information and Learning Company, [2008]. 1 microfilm reel ; 35 mm. Online version available on the World Wide Web.
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30

Egli, Ramon. "Environmental influences on the magnetic properties of lake sediments." Zürich : [s.n.], 2003. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=15090.

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31

Chan, Yau-Fei. "The sorption of arsenic species to Moira Lake sediments." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0006/MQ46008.pdf.

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32

Berry, Patricia A. "Lake Cycles and Sediments: Locality 80, Olduvai Gorge, Tanzania." Digital Archive @ GSU, 2012. http://digitalarchive.gsu.edu/geosciences_theses/47.

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Studies have shown that Bed I and Lower Bed II (1.92Ma- 1.76Ma) of Paleolake Olduvai at Locality 80 are primarily composed of the authigenic lacustrine clay minerals illite, smectite, and interlayered illite-smectite. X-ray fluorescence analysis and the sedimentation rates of Hay and Kyser (2001) were used to identify four apparent lake cycles beginning and ending with saline alkaline phases. Peaks in Al2O3/MgO ratios, and TiO2 and P2O5 abundances occur at approximately the same elevations within the stratigraphic section. Low values in these three parameters indicate saline alkaline condition
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33

Looft, Torey P. "MOLECULAR CHARACTERIZATION OF MICROBIAL COMMUNITIES IN LAKE ERIE SEDIMENTS." Bowling Green State University / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1131392301.

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34

Rahalkar, Monali. "Aerobic methanotrophic bacterial communities in sediments of Lake Constance." [S.l. : s.n.], 2006. http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-23787.

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35

Freitas, Nancy Louise. "Methane and Carbon Dioxide Dynamics in Arctic Lake Sediments." Thesis, The University of Arizona, 2015. http://hdl.handle.net/10150/579063.

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Rising global temperatures are expected to increase concentrations of greenhouse gases emitted by northern latitudes within the current century. The impact of global warming on Arctic lacustrine systems is generally unknown, although recent studies have examined fluxes of carbon dioxide (CO₂) and methane (CH₄) produced in ebullition events. Few studies have investigated the added impact of atmospheric warming on lake sediments, which produce CO₂ and CH₄ through microbial decomposition and diffusive loss in the water column. To better understand carbon emission scenarios at elevated temperature
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36

Amalfi, Frederick A., and Milton R. Sommerfeld. "Organic Contaminants in Urban Lake Sediments: A Preliminary Assessment." Arizona-Nevada Academy of Science, 1989. http://hdl.handle.net/10150/296424.

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From the Proceedings of the 1989 Meetings of the Arizona Section - American Water Resources Association and the Hydrology Section - Arizona-Nevada Academy of Science - April 15, 1989, University of Nevada, Las Vegas, Nevada<br>Bottom sediments from several urban lakes located in the Phoenix metropolitan area were collected and analyzed for organic priority pollutants. The lakes selected for analysis were broadly representative of the diversity of lake characteristics found in the Phoenix area. That is, lakes were sampled that had different types of primary water sources and that were located i
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37

Hartley, Kelley A. "Stratigraphic anaylsis [sic] of areal discontinuities of late Wisconsinan till sheets near Conneaut Lake, northwestern Pennsylvania." Akron, OH : University of Akron, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=akron1248371875.

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Thesis (M.S.)--University of Akron, Dept. of Geology, 2009.<br>"August, 2009." Title from electronic thesis title page (viewed 10/21/2009) Advisor, John P. Szabo; Faculty readers, Linda Barrett, LaVerne Friberg; Department Chair, John P. Szabo; Dean of the College, Chand Midha; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.
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38

Le, Tran Thai. "Mineralogy of Lake Hotagen Sediments: Variations with Grain Size throughout Vertical Profile of a Sediment Core." Thesis, Umeå universitet, Kemiska institutionen, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-160376.

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39

Basapuram, Laxmi Gayatri Devi. "Lake Victoria - Carbon, Nitrogen, Phosphorus and Stable Isotope (δ13C) comparison between lake and catchment sediments". Thesis, Linköpings universitet, Tema Miljöförändring, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-149283.

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Lake Victoria situated in East Africa faces an acute problem with eutrophication. Many reasons like agricultural production, industrialization, anthropogenic processes, the introduction of species, and economic activities have caused a stress to the overall well-being of the lake. Excess carbon, nitrogen, and phosphorus drive an increase in productivity which affects eutrophication. Previous studies on sediments and nutrient concentrations in the lake have concluded that nutrient concentrations increase due to release from the catchment. This study focuses on catchment sediments collected from
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40

Moberly, James Gill. "Biogeochemical cycling of toxic metals in Lake Coeur d'Alene sediments." Online access for everyone, 2006. http://www.dissertations.wsu.edu/Thesis/summer2006/J%5FMoberly%5F063006.PDF.

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41

Schallenberg, Marc. "The ecology of sediment bacteria and hypolimnetic catabolism in lakes : the relative importance of autochthonous and allochthonous organic matter." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=39519.

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Microbial metabolic activity in the hypolimnia and sediments of lakes drives the recycling of organic matter both through mineralization and the production of microbial biomass, which may be utilized by grazers. A correction factor was developed based on the water content of sediment samples that corrects sediment bacteria microscopic counts for masking due to sediment particles. Using this correction factor, it was found that sediment bacterial biomass in 22 lakes was positively related to an indicator of the rate of allochthonous organic matter input to lakes. However, the total hypolimnetic
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42

Korsman, Tom. "Acidification trends in Swedish lakes : an assessment of past water chemistry conditions using lake sediments." Doctoral thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 1993. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-140821.

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This thesis presents temporal perspectives of lake acidification in Sweden. Sediment records have been used to study timing, trends and causes of acidification, and two different techniques for assessing past lake-water acidity are presented. A new technique for pH prediction, based on near-infrared (NIR) spectroscopy of surface sediments, is developed. This study shows that there is a pH related fraction of lake sediments that can be recorded by NIR analysis. Relationships between NIR spectra of surface sediment samples and measured lake-water pH values, and between NIR spectra of sediment co
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43

Smirnov, Anna. "Polycyclic aromatic hydrocarbons in sediments of Lake Erie, Great Lakes : spatial distribution, sources and pathways /." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq23174.pdf.

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44

Wällstedt, Teresia. "Influence of acidification and liming on metals in lake sediments." Doctoral thesis, Stockholm University, Department of Applied Environmental Science (ITM), 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-471.

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<p>Emission and precipitation of acidifying substances and metals has caused severe acidification and increased metal concentrations in lakes and streams in Sweden as well as many other countries during the last decades. To counteract the negative effects of acidification, liming has been used extensively in Sweden since the 1970’s, a treatment that has been called one of the largest man-maid manipulations of aquatic ecosystems ever.</p><p>The aim of this thesis is to investigate the influence of acidification and liming on deposition of metals to lake sediments, and to look at the fate of met
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Carroll, Bryan P. "Paleolimnological investigation of recent sediments from Lake Monroe, Florida, USA." FIU Digital Commons, 2005. http://digitalcommons.fiu.edu/etd/2059.

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Sediments recovered in October 2003 from Lake Monroe, a hypereutrophic lake in central Florida, have been sub-sampled and analyzed for δ13C, δ15N, TC, TIC, TOC, and TN. A chronology of bulk sediment and nutrient accumulation was established by radiometric analyses (210Pb, 137Cs, and 14C), to aid in evaluating spatial and temporal patterns within the lake since development in the watershed began. A continuous 100- year sediment record from Lake Monroe shows significant changes in production, sedimentation, and nutrient abundance following land settlement in the mid 1800's. Sediment nutrient and
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Toms, Andrew David. "Mercury and methylmercury in the sediments of Lake St. Clair." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0018/MQ52669.pdf.

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Edirveerasingam, Veronica. "Implications of vehicle emissions in Lake Tahoe soils and sediments." abstract and full text PDF (free order & download UNR users only), 2006. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3239872.

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Wällstedt, Teresia. "Influence of acidification and liming on metals in lake sediments /." Stockholm : Dept. of Applied Environmental Science, Univ, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-471.

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Lawlor, Kirsten. "Distribution of bacteria and bacterial plasmids in lake water sediments." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240596.

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Teague, Eleanor. "Evaluating methods for detrital grain-size analysis of lake sediments." Thesis, University of Manchester, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.516796.

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