Aishihik Basin, Yukon 12,000 Year Multiproxy Lake Sediment Data Rainville, R.A.; Gajewski, K.J. Rainville, R.A. Gajewski, K.J. 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 earth science/paleoclimate/paleolimnology earth science/paleoclimate/paleolimnology (Lake WA01>LATITUDE 61.2447>LONGITUDE -136.9264) 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. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Rainville, R.A. Investigator : Gajewski, K.J. 2015-03-20 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/18435 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013pollen-conc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013pollen.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013loi-ms.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013charcoal.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013diversity.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013age.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013pollen-conc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013pollen.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013loi-ms.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013charcoal.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013diversity.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013age.txt English https://www.ncdc.noaa.gov/paleo/study/18435 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013pollen-conc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013pollen.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013loi-ms.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013charcoal.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013diversity.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/aishihik2013age.txt Rebecca A. Rainville and Konrad Gajewski2013Holocene environmental history of the Aishihik Region, Yukon, CanadaCanadian Journal of Earth Sciences504397-40510.1139/cjes-2012-0103http://cjes.geoscienceworld.org/content/50/4/397.abstract START YEAR: 12906 cal yr BP * END YEAR: -57 cal yr BP -136.9264 61.2447 -136.9264 61.2447