Walker - North Carolina-HWA - TSCA - ITRDB NC024 Walker, D.M.; Copenheaver, C.A. Walker, D.M. Copenheaver, C.A. TSCA Tsuga canadensis (L.) Carr. eastern hemlock earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF02a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF19a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF03a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF06b; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF07b; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF20a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF22c; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF11b; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF12c; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF15a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF18a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF19b; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF21c; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: pnf01b; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF09a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF12a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF23b; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: pnf03b; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF07a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF09b; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF13b; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF16a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF17b; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF01A; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF11a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF20b; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (age,null,null,year Common Era,null,tree ring,null,null,N,null) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF04a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF13a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF14a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF16c; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF18c; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF21a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF22a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF15b; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF02b; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF14b; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree ring (total ring width,null,null,millimeter,null,tree ring,null,null,N,Tree ID: PNF17a; units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999) earth science/paleoclimate/tree-ring (North Carolina-HWA>LATITUDE 35.2833>LONGITUDE -82.7167) Context: Hemlock woolly adelgid (Adelges tsugae) is an invasive insect that is defoliating and killing eastern hemlock (Tsuga canadensis) in the USA. Aims: We quantified changes in tree-ring growth rates and wood anatomy for living trees infested with hemlock woolly adelgid across six sites from Massachusetts (42°41'N) to Georgia (34°53'N) to identify growth responses of eastern hemlock that had survived infestation. Methods: Annual ring widths from infested eastern hemlocks were cross-dated and measured. Growth rates before and after infestation were compared. Two infested trees from Virginia were cut, and thin sections were prepared to identify changes in cell properties. Results: At three sites, trees experienced a significant decrease in radial growth after hemlock woolly adelgid arrival; however, the other three sites showed no change or increase in growth. Latewood produced after hemlock woolly adelgid infestation had significantly smaller cells with reduced cell wall thickness compared to latewood prior to infestation. Conclusion: At half the sites where hemlock woolly adelgid infested eastern hemlock trees were sampled, radial growth increased or remained unchanged. This unexpected response may be due to reduced competition due to mortality of other eastern hemlocks or physiological compensatory responses of increased photosynthetic rate and increased water use efficiency experienced by eastern hemlock infested with hemlock woolly adelgid. STUDY NOTES: Purpose of Collection: # Ecology - insect outbreaks # # Cores are stored at: # Virginia Tech Tree-Ring Lab # # Notes: # These cores were collected because of an insect outbreak. # Not recommended for use in climate reconstruction. NOAA Template Raw Measurements file added 2019-02-08. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Walker, D.M. Investigator : Copenheaver, C.A. 2014-09-22 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/17230 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/nc024.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/nc024-noaa.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/nc024.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/nc024.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/nc024-noaa.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/nc024.rwl English https://www.ncdc.noaa.gov/paleo/study/17230 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/nc024.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/nc024-noaa.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/nc024.rwl David M. Walker, Carolyn A. Copenheaver, Audrey Zink-Sharp2014Radial growth changes following hemlock woolly adelgid infestation of eastern hemlockAnnals of Forest Science715595-60210.1007/s13595-014-0367-3http://link.springer.com/article/10.1007/s13595-014-0367-3 START YEAR: 1910 AD * END YEAR: 2010 AD -82.7167 35.2833 -82.7167 35.2833