{"NOAAStudyId":"18435","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":"2015-03-20","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-18435.xml","doi":null,"earliestYearBP":12906,"earliestYearCE":-10956,"entryId":"noaa-lake-18435","funding":[{"fundingAgency":"Natural Sciences and Engineering Research Council of Canada","fundingGrant":null}],"investigators":"Rainville, R.A.; Gajewski, K.J.","mostRecentYearBP":-57,"mostRecentYearCE":2007,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/18435","originalSource":null,"publication":[{"abstract":"A 2.7 m sediment core from WA01, a small pond in Southwest Yukon, Canada (unofficial name, 61 14'41\"N, 136 55'35\"W, 1000 m above sea level), documents the postglacial vegetation and climate history of the Aishihik Basin. Open birch-shrub tundra established at the site ca. 10 900 cal years BP, immediately after deglaciation. Picea glauca established ca. 10 200 cal years BP, and an open spruce forest ecosystem has since remained dominant on the landscape. A gradual increase in Alnus crispa, starting ca. 6600 cal years BP, has also been noted in other studies from Central Yukon, suggesting a significant climate transition in Yukon at this time. An alternating pattern in sediment loss-on-ignition, also beginning ca. 6600 cal years BP, may be broadly related to trends in ∂18O values from the Mount Logan and Jellybean Lake oxygen isotope records, and is most likely reflective of periodic changes in available moisture in the region resulting from alterations in the strength and position of the Aleutian Low pressure system. However, millennial-scale climate variability identified in ice core and sediment records had little impact on the forests of the region.","author":{"name":"Rebecca A. Rainville and Konrad Gajewski"},"citation":"Rebecca A. Rainville and Konrad Gajewski. 2013. Holocene environmental history of the Aishihik Region, Yukon, Canada. Canadian Journal of Earth Sciences, 50(4), 397-405. doi: 10.1139/cjes-2012-0103","edition":null,"identifier":{"id":"10.1139/cjes-2012-0103","type":"doi","url":"http://dx.doi.org/10.1139/cjes-2012-0103"},"issue":"4","journal":"Canadian Journal of Earth Sciences","pages":"397-405","pubRank":"1","pubYear":2013,"reportNumber":null,"title":"Holocene environmental history of the Aishihik Region, Yukon, Canada","type":"publication","volume":"50"}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"56509","geo":{"geoType":"Feature","geometry":{"coordinates":["61.2447","-136.9264"],"type":"POINT"},"properties":{"easternmostLongitude":"-136.9264","maxElevationMeters":"1000","minElevationMeters":"1000","northernmostLatitude":"61.2447","southernmostLatitude":"61.2447","westernmostLongitude":"-136.9264"}},"locationName":"Continent>North America>Canada>Yukon Territory","mappable":"Y","paleoData":[{"NOAADataTableId":"28800","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth 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