noaa-lake-18435 Aishihik Basin, Yukon 12,000 Year Multiproxy Lake Sediment Data Rainville, R.A.; Gajewski, K.J. Aishihik Basin, Yukon 12,000 Year Multiproxy Lake Sediment Data 2015-03-20 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/18435 Investigator R.A. Rainville Investigator K.J. Gajewski earth science paleoclimate paleolimnology organic matter,sediment,null,percent,null,paleolimnology,null,loss on ignition,N,at 550 degrees C earth science paleoclimate paleolimnology carbonate,sediment,null,percent,null,paleolimnology,null,loss on ignition,N,at 950 degrees C earth science paleoclimate paleolimnology volume magnetic susceptibility,sediment,null,dimensionless (SI system),null,paleolimnology,averaged,null,N,x10-5 units; average of all drives earth science paleoclimate paleolimnology volume,sediment,null,cubic centimeter,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology depth,null,null,centimeter,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology volume magnetic susceptibility,sediment,null,dimensionless (SI system),null,paleolimnology,averaged,null,N,x10-5 units; average of drives 1 2A 3 2B 4 earth science paleoclimate fire history|paleolimnology charcoal,sediment,null,count per milliliter,null,fire history|paleolimnology,null,null,N,>125um earth science paleoclimate fire history|paleolimnology charcoal,sediment,null,count,null,fire history|paleolimnology,null,null,N,>125um earth science paleoclimate paleolimnology sedimentation rate,sediment,null,centimeter per year,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology age,null,null,calendar year before present,null,paleolimnology,null,null,N,null earth science paleoclimate fire history|paleolimnology charcoal,sediment,null,count per square centimeter per year,null,fire history|paleolimnology,null,null,N,>125um earth science paleoclimate paleolimnology age control earth science paleoclimate paleolimnology population abundance earth science paleoclimate paleolimnology geochemistry geoscientificInformation 12906 cal yr BP -57 cal yr BP Complete 61.2447 61.2447 -136.9264 -136.9264 1000 1000 Continent North America Canada Yukon Territory Lake WA01>LATITUDE 61.2447>LONGITUDE -136.9264 None 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. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Rebecca A. Rainville and Konrad Gajewski 2013 Canadian Journal of Earth Sciences 50 4 397-405 10.1139/cjes-2012-0103 http://cjes.geoscienceworld.org/content/50/4/397.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. STUDY NOTES: Multiproxy sediment data from Lake WA01, Aishihik Basin, southwest Yukon, Canada. Data include pollen counts, sediment physical properties, and charcoal concentration.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013.xls Excel Data File; Lake WA01 Pollen and Geochemical Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013pollen-conc.txt Data File; Lake WA01 Pollen Flux and Concentration Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013pollen.txt Data File; Lake WA01 Pollen Counts GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013loi-ms.txt Data File; Lake WA01 Loss-on-ignition and Magnetic Susceptibility Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013charcoal.txt Data File; Lake WA01 Macrocharcoal Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013diversity.txt Data File; Lake WA01 Species Diversity Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013age.txt Data File; Lake WA01 Interpolated Age Model USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11