{"NOAAStudyId":"26792","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","constraints":"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.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"2019-05-15","dataPublisher":"NOAA","dataType":"TREE RING","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/tree-ring","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-tree-26792.xml","doi":null,"earliestYearBP":23,"earliestYearCE":1927,"entryId":"noaa-tree-26792","funding":[{"fundingAgency":"Natural Sciences and Engineering Research Council of Canada","fundingGrant":null}],"investigators":"Birch, J.D.","mostRecentYearBP":-67,"mostRecentYearCE":2017,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/26792","originalSource":null,"publication":[{"abstract":"Variation in tree recruitment, mortality, and growth can alter forest community composition and structure. Because tree recruitment and mortality events are generally infrequent, long-time scales are needed to confirm trends in forests. We performed a 50-yr demographic census of a forest plot located on the southern edge of the Canadian boreal forest, a region currently experiencing forest die-back in response to direct and indirect effects of recent severe droughts. Here, we show that over the last 30 yr biomass, basal area, growth, and recruitment have decreased along with a precipitous rise in mortality across the dominant tree species. The stand experienced periods of drought in combination with multiple outbreaks of forest tent caterpillar (Malacosoma disstria) and bark beetles. These insect disturbances interacted to increase mortality rates within the stand and decrease stand density. The interaction of endogenous and exogenous factors may shift forests in this region onto novel successional trajectories with the possibility of changes in regional vegetation type.","author":{"name":"Joseph D. Birch, James A. Lutz, E. H. Hogg, Suzanne W. Simard, Rick Pelletier, George H. LaRoi, Justine Karst"},"citation":"Joseph D. Birch, James A. Lutz, E. H. Hogg, Suzanne W. Simard, Rick Pelletier, George H. LaRoi, Justine Karst. 2019. Decline of an ecotone forest: 50 years of demography in the southern boreal forest. Ecosphere, 10(4). doi: 10.1002/ecs2.2698","edition":null,"identifier":{"id":"10.1002/ecs2.2698","type":"doi","url":"http://dx.doi.org/10.1002/ecs2.2698"},"issue":"4","journal":"Ecosphere","pages":null,"pubRank":"1","pubYear":2019,"reportNumber":null,"title":"Decline of an ecotone forest: 50 years of demography in the southern boreal forest","type":"publication","volume":"10"}],"reconstruction":"N","scienceKeywords":["Pinus banksiana Lamb.","jack pine","PIBN"],"site":[{"NOAASiteId":"57874","geo":{"geoType":"Feature","geometry":{"coordinates":["53.40765","-113.7517"],"type":"POINT"},"properties":{"easternmostLongitude":"-113.7517","maxElevationMeters":"712","minElevationMeters":"712","northernmostLatitude":"53.40765","southernmostLatitude":"53.40765","westernmostLongitude":"-113.7517"}},"locationName":"Continent>North America>Canada>Alberta","mappable":"Y","paleoData":[{"NOAADataTableId":"39155","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>tree-ring>width>ring width"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/cana560.txt","linkText":"cana560.txt","urlDescription":"Correlation Stats","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>tree-ring>width>ring width"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/canada/cana560.rwl","linkText":"cana560.rwl","urlDescription":"Raw Measurements","variables":[]}],"dataTableName":"CANA560","dataTableNotes":null,"earliestYear":1927,"earliestYearBP":23,"earliestYearCE":1927,"mostRecentYear":2017,"mostRecentYearBP":-67,"mostRecentYearCE":2017,"species":[{"commonName":["jack pine"],"scientificName":"Pinus banksiana Lamb.","speciesCode":"PIBN"}],"timeUnit":"AD"}],"siteName":"George LaRoi Forest Plot"}],"studyCode":"CANA560","studyName":"Birch - George LaRoi Forest Plot - PIBN - ITRDB CANA560","studyNotes":"Chronologies of four co-occurring tree species within a long-term forest plot at the southern ecotone of the Canadian boreal forest. The naming format for each species' cores is as follows: Picea glauca (GLP01A), Betula papyrifera (GLB01A), Pinus banksiana (GLJ01A), Populus tremuloides (GLA01A).","version":"1.0","xmlId":"65796"}