# Inuvik, Northwest Territories Picea mariana Tree Ring d13C Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/31112 # Description: NOAA Landing Page of study # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/canada/cana612-noaa.rwl # Description: Raw Measurements - NOAA Template File # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/canada/cana612.rwl # Description: Raw Measurements - Tucson Decadal File # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/canada/inuvik2020d13c.txt # Description: Carbon isotope data - NOAA Template File # # Original_Source_URL: # Description: # # Description/Documentation lines begin with # # Data lines have no # # # Data_Type: Tree Ring, delta 13C # # Dataset_DOI: # # Parameter_Keywords: width, carbon isotopes #-------------------- # Contribution_Date # Date: 2020-09-04 #-------------------- # File_Last_Modified_Date # Date: 2020-09-04 #-------------------- # Title # Study_Name: Inuvik, Northwest Territories Picea mariana Tree Ring d13C Data #-------------------- # Investigators # Investigators: Sniderhan, A.E.; Baltzer, J.L. #-------------------- # Description_Notes_and_Keywords # Description: Tree ring sampled; In four stands, cores were taken from the nearest black spruce # (with DBH greater than ~5 cm to ensure a non-destructive core sample) every 10 m along three # parallel 90 meter transects, spaced 25 m apart - a total of 10 trees per transect. # Where there were not trees present within a 5 m radius of a sampling point, # the transect was extended by an additional 10 m until 10 trees were sampled. # Subset of trees used in delta 13C analysis. # # Northernmost: 68°19'16.22"N # Southernmost: 68°18'43.63"N # Easternmost: 133°23'13.30"W # Westernmost: 133°32'7.11"W # # Label scheme: # HC_ _ _ _ _ _ = site ID # _ _ 1 _ _ _ _ _= stand ID (1-4) # _ _ _ 1 _ _ _ _ = transect ID (only unique within stand) # _ _ _ 01 _ _ = tree ID # _ _ _ _ _ _ A 2 = core ID (last value may be NA) #-------------------- # Publication # Authors: Sniderhan, A.E.; Mamet, S.D. ; Baltzer, J.L. # Published_Date_or_Year: 2020 # Published_Title: Non-uniform growth dynamics of a dominant boreal tree species (Picea mariana) in the face of rapid climate change # Journal_Name: Canadian Journal of Forest Research # Volume: # Edition: # Issue: # Pages: # Report_Number: # DOI: 10.1139/cjfr-2020-0188 # Online_Resource: # Full_Citation: # Abstract: Northwestern Canada's boreal forest has experienced rapid warming, drying, and changes to permafrost, yet the growth responses and mechanisms driving productivity have been understudied at broad scales. Forest responses are largely driven by black spruce - the region's most widespread and dominant tree. We collected tree-ring samples from four black spruce-dominated sites across 15 degrees of latitude, spanning gradients in climate and permafrost. We investigated (1) differences in growth patterns, (2) variations in climatic drivers of growth, and (3) trends in water use efficiency (WUE) through 13C isotope analysis from 1945 - 2006. We found positive growth trends at all sites except mid-latitude, where rapid permafrost thaw drove declines. Annual growth was lowest at the tree limit site and highest at the treeline. Climatic drivers of these growth patterns varied; positive growth responses at the northerly sites were associated with warmer winters, whereas d13C trends and climate-growth responses at mid-latitude sites indicated growth was limited by moisture availability. d13C signatures indicated increased WUE at the southernmost site, with no significant trends at northern sites. These results suggest that warming will increase growth of trees at black spruce's northern extent, but southerly areas may face drought stress if precipitation does not balance evapotranspiration. #------------------ # Funding_Agency # Funding_Agency_Name: # Grant: #------------------ # Site_Information # Site_Name: Inuvik # Location: North America>Canada>Northwest Territories # Country: Canada # Northernmost_Latitude: 68.31472 # Southernmost_Latitude: 68.31472 # Easternmost_Longitude: -133.4583 # Westernmost_Longitude: -133.4583 # Elevation: 100 #------------------ # Data_Collection # Collection_Name: HC # Earliest_Year: 1860 # Most_Recent_Year: 2014 # Time_Unit: year Common Era # Core_Length: # Notes: distance and years to pith for each tree estimated with CooRecorder 7.8.1 # #------------------ # Species # Species_Name: Picea mariana (Mill.) Britton, Sterns, & Poggenb. # Common_Name: Black Spruce # Tree_Species_Code: PCMA #------------------ # Chronology_Information # Chronology: # #---------------- # Variables # # Data variables follow are preceded by "##" in columns one and two. # variables format: shortname what,material,error,units,seasonality,data_type,detail,method,data_format,additional_information # ## age_AD age, , , year Common Era, , Tree Ring, , ,N, ## d13C1107 delta 13C, wood,,per mil VPDB,,Tree Ring, , ,N, sample HC1107 whole wood ## d13C1306 delta 13C, wood,,per mil VPDB,,Tree Ring, , ,N, sample HC1306 whole wood ## d13C2102 delta 13C, wood,,per mil VPDB,,Tree Ring, , ,N, sample HC2102 whole wood ## d13C3201 delta 13C, wood,,per mil VPDB,,Tree Ring, , ,N, sample HC3201 whole wood ## d13C4101 delta 13C, wood,,per mil VPDB,,Tree Ring, , ,N, sample HC4101 whole wood ## d13C4305 delta 13C, wood,,per mil VPDB,,Tree Ring, , ,N, sample HC4305 whole wood # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: # age_AD d13C1107 d13C1306 d13C2102 d13C3201 d13C4101 d13C4305 1947 - 1951 -24.47 -22.47 -23.95 -24.41 -24.77 -24.14 1952 - 1956 -24.47 -22.73 -23.54 -24.6 -24.93 -23.5 1957 - 1961 -24.19 -22.74 -24.47 -24.41 -25.46 -24.02 1962 - 1966 -24.22 -22.28 -24.81 -24.36 -25.67 -24.49 1967 - 1971 -24.58 -22.61 -24.54 -24.4 -25.59 -24.39 1972 - 1976 -24.89 -22.99 -24.68 -25.26 -26.35 -25.15 1977 - 1981 -25.11 -22.98 -25.25 -24.88 -27.3 -25.48 1982 - 1986 -25 -22.81 -25.99 -25.04 -26.76 -24.47 1987 - 1991 -25.36 -22.44 -25.6 -24.76 -27.63 -25.25 1992 - 1996 -25.38 -22.97 -25.71 -25.14 -27.18 -25.65 1997 - 2001 -25.5 -23.4 -26.49 -25.24 -27.47 -25.6 2002 - 2006 -26.18 -23.86 -26.72 -25.42 -27.19 -26.7