Lac Brulé, Québec 1400 Year Pollen and Lake Sediment Data Lafontaine-Boyer, K.; Gajewski, K.J. Lafontaine-Boyer, K. Gajewski, K.J. earth science/paleoclimate/climate reconstructions|pollen (temperature,null,null,degree Celsius,annual,climate reconstructions|pollen,null,modern analogue technique,N,null) earth science/paleoclimate/fire history|paleolimnology (charcoal,sediment,null,count per milliliter,null,fire history|paleolimnology,null,null,N,Macrocharcoal particles >125um) earth science/paleoclimate/climate reconstructions|pollen (age,null,null,year Common Era,null,climate reconstructions|pollen,null,null,N,null) earth science/paleoclimate/climate reconstructions|pollen (temperature,null,null,degree Celsius,Jun-Aug,climate reconstructions|pollen,null,modern analogue technique,N,null) earth science/paleoclimate/paleolimnology (varve thickness,sediment,null,millimeter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (varve thickness,sediment,one standard deviation,millimeter,null,paleolimnology,composited|smoothed,null,N,composite of 4 cores; running average) earth science/paleoclimate/climate reconstructions|pollen (precipitation,null,null,centimeter,Jun-Aug,climate reconstructions|pollen,null,modern analogue technique,N,null) earth science/paleoclimate/paleolimnology (age,null,null,year Common Era,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,Macrocharcoal particles >125um) earth science/paleoclimate/climate reconstructions|pollen (precipitation,null,null,centimeter,annual,climate reconstructions|pollen,null,modern analogue technique,N,null) earth science/paleoclimate/paleolimnology (calcium carbonate,sediment,null,weight percent,null,paleolimnology,null,loss on ignition,N,loss on ignition at 950 degrees C) earth science/paleoclimate/paleolimnology (varve thickness,sediment,null,millimeter,null,paleolimnology,composited|smoothed,null,N,composite of 4 cores; running average) earth science/paleoclimate/climate reconstructions|pollen (age,null,null,calendar year before present,null,climate reconstructions|pollen,null,null,N,null) earth science/paleoclimate/paleolimnology (organic matter,sediment,null,weight percent,null,paleolimnology,null,loss on ignition,N,loss on ignition at 550 degrees C) 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 earth science/paleoclimate/paleolimnology (Lac Brulé>LATITUDE 45.7192>LONGITUDE -75.4422) A pollen diagram from Lac Brulé in southwestern Québec (45°43'09"N, 75°26'32"W, 270 m) provides a late Holocene history of the vegetation. The presence of varved sediments permitted the development of a high-resolution (10-year), cross-dated chronology with an estimated error of approximately 1%. During the last 1400 years, the forests were dominated by Tsuga, Fagus, Betula, Acer and Pinus. A peak in microcharcoal and evidence of post-fire succession suggest that the changes in the pollen assemblages around ad 1375 were a consequence of a fire in the region. There was a decrease in pollen influx of several deciduous taxa and Tsuga between ad 1600 and 1700, suggesting a rapid climate change that was significant enough to have affected pollen production of these taxa. This change, associated with the beginning of the 'Little Ice Age' in the region, affected the forest composition for the subsequent centuries. A detailed comparison of this pollen record with that from a nearby pollen diagram also prepared at high-temporal resolution shows the ability of pollen records to record short-period climate variations and disturbances. STUDY NOTES: Pollen data plus varve thickness and loss-on-ignition data from Lac Brulé, Québec for the past 1400 years. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Lafontaine-Boyer, K. Investigator : Gajewski, K.J. 2015-03-20 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/19380 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014recon.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014varve.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014loi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014pollen.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014par.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014recon.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014varve.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014loi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014pollen.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014par.txt English https://www.ncdc.noaa.gov/paleo/study/19380 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014recon.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014varve.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014loi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014pollen.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/pq/brule2014par.txt Karelle Lafontaine-Boyer and Konrad Gajewski2014Vegetation dynamics in relation to late Holocene climate variability and disturbance, Outaouais, Québec, CanadaThe Holocene24111515-152610.1177/0959683614544054http://hol.sagepub.com/content/24/11/1515.abstract START YEAR: 605 AD * END YEAR: 2005 AD -75.4422 45.7192 -75.4422 45.7192