# Trail Valley Creek, 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/31114 # Description: NOAA Landing Page of study # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/canada/cana614-noaa.rwl # Description: Raw Measurements - NOAA Template File # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/canada/cana614.rwl # Description: Raw Measurements - Tucson Decadal File # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/canada/trail-valley-creek2020d13c.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: ring width, carbon isotopes #-------------------- # Contribution_Date # Date: 2020-09-04 #-------------------- # File_Last_Modified_Date # Date: 2020-09-04 #-------------------- # Title # Study_Name: Trail Valley Creek, Northwest Territories Picea mariana Tree Ring d13C Data #-------------------- # Investigators # Investigators: Sniderhan, A.E.; Baltzer, J.L. #-------------------- # Description_Notes_and_Keywords # Description: Tree rings sampled; samples were taken haphazardly across a 4 km2 area in 2013, # wherever arborescent or >4 cm DBH krummholz leaders were found. Subsample of tree for delta 13C analysis. # # Northernmost: 68°44'29.62"N # Southernmost: 68°43'17.60"N # Easternmost: 133°28'47.07"W # Westernmost: 133°30'12.91"W # # Label scheme: # TVPM _ _ _ = site ID # _ _ _ _ 01 _= tree ID # _ _ _ _ _ _ A = core ID (A or B, taken from same tree # #-------------------- # 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: Trail Valley Creek # Location: North America>Canada>Northwest Territories # Country: Canada # Northernmost_Latitude: 68.7317 # Southernmost_Latitude: 68.7317 # Easternmost_Longitude: -133.4917 # Westernmost_Longitude: -133.4917 # Elevation: 100 #------------------ # Data_Collection # Collection_Name: TVPM # Earliest_Year: 1881 # Most_Recent_Year: 2014 # Time_Unit: year common era # Core_Length: # Notes: Two cores per tree # #------------------ # 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, ## d13CPM04 delta 13C, wood,,per mil VPDB,,Tree Ring, , ,N, sample TVPM04 whole wood ## d13CPM09 delta 13C, wood,,per mil VPDB,,Tree Ring, , ,N, sample TVPM09 whole wood ## d13CPM17 delta 13C, wood,,per mil VPDB,,Tree Ring, , ,N, sample TVPM17 whole wood # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: # age_AD TVPM04 TVPM09 TVPM17 1947 - 1951 -25.41 -24.42 -24.23 1952 - 1956 -25.45 -25.05 -24.75 1957 - 1961 -25.90 -25.49 -24.09 1962 - 1966 -25.59 -25.18 -24.24 1967 - 1971 -25.33 -25.73 -24.29 1972 - 1976 -25.79 -26.18 -25.28 1977 - 1981 -25.42 -26.39 -25.68 1982 - 1986 -25.39 -26.51 -25.84 1987 - 1991 -25.61 -26.30 -25.45 1992 - 1996 -25.84 -26.40 -25.71 1997 - 2001 -26.31 -27.12 -26.23 2002 - 2006 -26.62 -27.44 -26.87