{"NOAAStudyId":"25550","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","constraints":"Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"2018-11-15","dataPublisher":"NOAA","dataType":"PALEOLIMNOLOGY","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/lake","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-lake-25550.xml","doi":null,"earliestYearBP":806,"earliestYearCE":1144,"entryId":"noaa-lake-25550","funding":[{"fundingAgency":"Natural Environment Research Council (NERC)","fundingGrant":"NE/D000157/1, NE/R000069/1"},{"fundingAgency":"Natural Environment Research Council Isotope Geoscience Facility","fundingGrant":"IP/884/105"}],"investigators":"Mills, K.; Vane, C.H.; Lopes dos Santos, R.A.; Ssemmanda, I.; Leng, M.J.; Ryves, D.B.","mostRecentYearBP":-57,"mostRecentYearCE":2007,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/25550","originalSource":null,"publication":[{"abstract":"The exploitation of lakes has led to large-scale contemporary impacts on freshwater systems, largely in response to catchment clearance. Such clearance is causing changes to carbon dynamics in tropical lakes which may have significance for wider carbon budgets, depending on the changes in carbon sequestration and mineralisation driven by changing roles of terrestrial and aquatic carbon in lakes over time. Despite increasing awareness of the pivotal role of carbon source in carbon dynamics, discriminating the source of carbon from a palaeolimnological record is rarely undertaken. Here we use novel geochemical techniques (brGDGTs, n-alkanes, Rock-Eval pyrolysis), paired with traditional analyses (diatoms, pollen), to elucidate changing sources of carbon through time and ecosystem response.\r\n\r\nEnvironmental changes at Lake Nyamogusingiri can be divided into three phases: Phase I (CE 1150-1275), a shallow and productive lake, where a diverse terrestrial environment is, initially, the main carbon source, before switching to an aquatic source; Phase II (CE 1275-1900), variable lake levels (generally in decline) with increasing productivity, and carbon is autochthonous in source; Phase III (CE 1900-2007), lake level declines, and the carbon is of a mixed source, though the terrestrially derived carbon is from a less diverse source.\r\n\r\nThe organic geochemical analyses provide a wealth of data regarding the complexity of aquatic response to catchment and with-in lake changes. These data demonstrate that small, tropical lake systems have the potential to bury high quantities of carbon, which has implications for the disruption of local biogeochemical cycles (C, P, N, and Si) both in the past, and the future as human and climate pressures increase.","author":{"name":"Keely Mills, Christopher H. Vane, Raquel A. Lopes dos Santos, Immaculate Ssemmanda, Melanie J. Leng, David B. Ryves"},"citation":"Keely Mills, Christopher H. Vane, Raquel A. Lopes dos Santos, Immaculate Ssemmanda, Melanie J. Leng, David B. Ryves. 2018. Linking land and lake: Using novel geochemical techniques to understand biological response too environmental change. Quaternary Science Reviews. . doi: 10.1016/j.quatscirev.2018.09.038","edition":null,"identifier":{"id":"10.1016/j.quatscirev.2018.09.038","type":"doi","url":"http://dx.doi.org/10.1016/j.quatscirev.2018.09.038"},"issue":null,"journal":"Quaternary Science Reviews","pages":null,"pubRank":"1","pubYear":2018,"reportNumber":null,"title":"Linking land and lake: Using novel geochemical techniques to understand biological response too environmental change","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"56127","geo":{"geoType":"Feature","geometry":{"coordinates":["-.284583","30.012972"],"type":"POINT"},"properties":{"easternmostLongitude":"30.012972","maxElevationMeters":"984","minElevationMeters":"984","northernmostLatitude":"-0.284583","southernmostLatitude":"-0.284583","westernmostLongitude":"30.012972"}},"locationName":"Continent>Africa>Eastern Africa>Uganda","mappable":"Y","paleoData":[{"NOAADataTableId":"37473","coreLengthMeters":1,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>geochemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/nyamogusingiri2018.txt","linkText":"Lake Nyamogusingiri Sediment Data","urlDescription":"NOAA Template File","variables":[]}],"dataTableName":"Nyamogusingiri2018","dataTableNotes":"The data provided are from a composite core sequence. This master core sequence consists of a number of correlated, overlapping cores. Additional details are provided in an associated publication: Mills et al. (2014)","earliestYear":1144,"earliestYearBP":806,"earliestYearCE":1144,"mostRecentYear":2007,"mostRecentYearBP":-57,"mostRecentYearCE":2007,"species":[],"timeUnit":"AD"}],"siteName":"Lake Nyamogusingiri"}],"studyCode":null,"studyName":"Lake Nyamogusingiri, Uganda 800 Year Multiproxy Lake Sediment Data","studyNotes":"Geochemical, isotope, and physical properties data plus pollen data from sediments collected in Lake Nyamogusingiri, Uganda, for the past 800 years.","version":"1.0","xmlId":"23734"}