{"NOAAStudyId":"26950","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":"2019-06-05","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-26950.xml","doi":null,"earliestYearBP":1767,"earliestYearCE":183,"entryId":"noaa-lake-26950","funding":[{"fundingAgency":"Deutsche Forschungsgemeinschaft","fundingGrant":"Ma 4504/1-1, Schi 1366/1-1"}],"investigators":"Kock, S.T.; Schittek, K.; Machtle, B.; Wissel, H.; Maldonado, A.; Lucke, A.","mostRecentYearBP":-64,"mostRecentYearCE":2014,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/26950","originalSource":null,"publication":[{"abstract":"A Late Holocene paleoenvironmental record was obtained from the Lagunillas cushion peatland (LP, 27 12'S, 69 17'W), located in the dry Puna of the western Central Andes. Ten radiocarbon dates build the chronology for the last 1800 cal a BP. Analyses of stable isotopes on cellulose (d18Ocell, d13Ccell) and geochemical proxies on organic matter (d13COM, d15Nbulk, TOC, TN, LOI, T535) were conducted to identify major paleoenvironmental changes in this record. Simultaneously, ambient water (d18O, d2H) and plant samples of the dominant species Oxychloe andina (d18Ocell, d13Ccell) reveal insights into modern conditions. The record reveals distinct multi-centennial oscillations of peat layer thickness and d18Ocell. Decomposition, changes in the dominating plant species as well as in plant parts (leaves/roots) can be excluded as driving factors for these oscillations. Thus, d18Ocell seems to be externally forced and reflects humidity changes. Around 470 cal a BP a distinct change towards increased humidity occurred, lasting during the Little Ice Age until about 70 cal a BP. Humid conditions prevailed between 1530 and 1270 cal a BP. Increasing d18Ocell values since 30 cal a BP mark a trend towards again increased aridity.","author":{"name":"S.T. Kock, K. Schittek, B. Machtle, H. Wissel, A. Maldonado, A. Lucke"},"citation":"S.T. Kock, K. Schittek, B. Machtle, H. Wissel, A. Maldonado, A. Lucke. 2019. Late Holocene environmental changes reconstructed from stable isotope and geochemical records from a cushion-plant peatland in the Chilean Central Andes (27S). Journal of Quaternary Science, 34(2), 153-164. doi: 10.1002/jqs.3088","edition":null,"identifier":{"id":"10.1002/jqs.3088","type":"doi","url":"http://dx.doi.org/10.1002/jqs.3088"},"issue":"2","journal":"Journal of Quaternary Science","pages":"153-164","pubRank":"1","pubYear":2019,"reportNumber":null,"title":"Late Holocene environmental changes reconstructed from stable isotope and geochemical records from a cushion-plant peatland in the Chilean Central Andes (27S)","type":"publication","volume":"34"}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"57885","geo":{"geoType":"Feature","geometry":{"coordinates":["-27.2","-69.283333"],"type":"POINT"},"properties":{"easternmostLongitude":"-69.283333","maxElevationMeters":"3823","minElevationMeters":"3823","northernmostLatitude":"-27.2","southernmostLatitude":"-27.2","westernmostLongitude":"-69.283333"}},"locationName":"Continent>South America>Chile","mappable":"Y","paleoData":[{"NOAADataTableId":"39313","coreLengthMeters":4,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>carbon isotopes","earth science>paleoclimate>paleolimnology>oxygen isotopes","earth science>paleoclimate>paleolimnology>geochemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/chile/lagunillas2019.txt","linkText":"Lagunillas Peatland Geochemical and Isotope Data","urlDescription":"NOAA Template File","variables":[]}],"dataTableName":"Lagunillas2019C1581","dataTableNotes":null,"earliestYear":1767,"earliestYearBP":1767,"earliestYearCE":183,"mostRecentYear":-64,"mostRecentYearBP":-64,"mostRecentYearCE":2014,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Lagunillas Peatland"}],"studyCode":null,"studyName":"Lagunillas Peatland, Chile 1,800 Year Geochemical and Isotope Data","studyNotes":"Multiproxy record from Lagunillas Peatland, Chile as base for 1,800 year paleoenvironmental reconstruction.","version":"1.0","xmlId":"66655"}