noaa-lake-18556 St. Elias Mountains, Yukon 14,000 Year Lake Sediment and Tree-Ring Data Gajewski, K.J.; Bunbury, J.-M.; Vetter, M.; Kroeker, N.; Khan, A.H. St. Elias Mountains, Yukon 14,000 Year Lake Sediment and Tree-Ring Data 2015-03-20 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/18556 Investigator K.J. Gajewski Investigator J.-M. Bunbury Investigator M. Vetter Investigator N. Kroeker Investigator A.H. Khan earth science paleoclimate fire history|paleolimnology charcoal,sediment,null,count per square centimeter per year,null,fire history|paleolimnology,null,null,N,null earth science paleoclimate paleolimnology age,null,null,year Common Era,null,paleolimnology,null,null,N,null earth science paleoclimate tree ring tree ring standardized growth index,null,null,null,null,tree ring,composited,null,N,null earth science paleoclimate fire history|paleolimnology charcoal,sediment,null,count per gram per year,null,fire history|paleolimnology,null,null,N,count g-1 dry sediment yr-1 earth science paleoclimate paleolimnology age,null,null,calendar year before present,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology population abundance earth science paleoclimate paleolimnology geochemistry geoscientificInformation 14661 cal yr BP -50 cal yr BP Complete 60.8 61.1 -138.25 -137.9 1326 1326 Continent North America Canada Yukon Territory Keyhole Lake>LATITUDE 61.1>LONGITUDE -138.25 Continent North America Canada Yukon Territory Upper Fly Lake>LATITUDE 61.04>LONGITUDE -138.09 Continent North America Canada Yukon Territory Sulphur Lake>LATITUDE 60.8>LONGITUDE -137.9 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 Gajewski, K.; Bunbury, J.; Vetter, M.; Kroeker, N.; Khan, A.H. 2014 Arctic ASTIS record 79053 67 suppl. 1 58-70 10.14430/arctic4349 http://www.aina.ucalgary.ca/scripts/minisa.dll/144/proe/proarc/se+arctic,+v.+67,+suppl.++1,+2014,+p*?COMMANDSEARCH

The St. Elias Mountain region has occupied an important place in the study of the Quaternary because it presents a relatively accessible non-polar icefield and an array of environments from tundra to boreal forest. Paleoenvironmental studies in southwestern Yukon have documented the broad-scale climatic changes of the past 20 000 years, although few studies exist with well-dated sequences at high temporal resolution. Picea glauca arrived across the entire region around 10 000 years ago; however, the details regarding its migration pathways are not well known. Available records indicate few major changes in the composition of the boreal forest vegetation since that time. A slightly more intense fire regime in the early to mid Holocene has been suggested, but this conclusion is based on only a few studies. Variations in the tree line during the Holocene have been examined, but these studies also lack details. There is no evidence for more extensive grasslands in the area during the Holocene. Paleolimnological studies indicate that changes in populations of aquatic organisms have occurred in response to either Holocene climates or watershed variability. STUDY NOTES: Lake sediment data and tree-ring chronologies from the St. Elias Mountain region of southwest Yukon. Data from figures 4 and 5 are presented, including new charcoal and tree-ring chronologies, plus some previously published data.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/sulphur2014picea.txt Data File; Sulphur Lake Picea Percent GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/sulphur2014microchar.txt Data File; Sulphur Lake Microcharcoal Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/upperfly2014microchar.txt Data File; Upper Fly Lake Microcharcoal Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/stelias2014crn.txt Data File; St. Elias Mountains Tree Ring Chronologies GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/upperfly2014picea.txt Data File; Upper Fly LakePicea Percent GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/keyhole2014.txt Data File; Keyhole Lake Charcoal and Picea Percent Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/stelias2014.xlsx Excel Data File; St. Elias Mountains All Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/sulphur2014macrochar.txt Data File; Sulphur Lake Macrocharcoal Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/upperfly2014macrochar.txt Data File; Upper Fly Lake Macrocharcoal Data USA/NOAA DIF Version 9.8.4 2019-03-01 2019-03-01