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. Gajewski, K.J. Bunbury, J.-M. Vetter, M. Kroeker, N. Khan, A.H. 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 earth science/paleoclimate/paleolimnology (Keyhole Lake>LATITUDE 61.1>LONGITUDE -138.25) (Upper Fly Lake>LATITUDE 61.04>LONGITUDE -138.09) (Sulphur Lake>LATITUDE 60.8>LONGITUDE -137.9) 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. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Gajewski, K.J. Investigator : Bunbury, J.-M. Investigator : Vetter, M. Investigator : Kroeker, N. Investigator : Khan, A.H. 2015-03-20 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/18556 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/sulphur2014picea.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/sulphur2014microchar.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/upperfly2014microchar.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/stelias2014crn.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/upperfly2014picea.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/keyhole2014.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/stelias2014.xlsx https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/sulphur2014macrochar.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/upperfly2014macrochar.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/sulphur2014picea.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/sulphur2014microchar.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/upperfly2014microchar.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/stelias2014crn.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/upperfly2014picea.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/keyhole2014.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/stelias2014.xlsx https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/sulphur2014macrochar.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/upperfly2014macrochar.txt English https://www.ncdc.noaa.gov/paleo/study/18556 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/sulphur2014picea.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/sulphur2014microchar.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/upperfly2014microchar.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/stelias2014crn.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/upperfly2014picea.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/keyhole2014.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/stelias2014.xlsx https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/sulphur2014macrochar.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/upperfly2014macrochar.txt Gajewski, K.; Bunbury, J.; Vetter, M.; Kroeker, N.; Khan, A.H. 2014Paleoenvironmental studies in southwestern YukonArcticASTIS record 7905367suppl. 158-7010.14430/arctic4349http://www.aina.ucalgary.ca/scripts/minisa.dll/144/proe/proarc/se+arctic,+v.+67,+suppl.++1,+2014,+p*?COMMANDSEARCH START YEAR: 14661 cal yr BP * END YEAR: -50 cal yr BP -138.25 60.8 -137.9 61.1