PDF-Hemlock Forests

Threatened by Hemlock Woolly AdelgidDavid A Orwig Harvard Forest David Kittredge UMass Extension he introduced HEMLOCK WOOLLY ADELGID HWA Adelges tsugae Annand continues to migrate nor. By: Joe Beck III and . Tayler. . Termeer. Conium . maculatum. A member of the parsley family. Up to 6 . ft. tall and has purple spots on the stem. . Grows on fertile soils across the U.S.. Department of Agriculture Forest Service Northeastern Area NA-PR-01-02 Nymphs and adults of elongate hemlock scale, Fiorinia externa, on the lower surface of hemlock Nymphs and adults of circular he Ex situ . Gene Conservation of Eastern Hemlocks (. Tsuga. . canadensis. ) . Threatened . by the Hemlock Woolly . Adelgid. (. Adelges. . tsugae. ). Robert . M. Jetton. 1. , . Kevin M. Potter. 2. , William . The EASTERN HEMLOCK. Tsuga canadensis. Presented by:. Jayme Longo . Why Hemlocks are Important. Scenic Beauty. 1. Erosion Control. 2. Hydrology Modification. Cooling Temperatures -. Trout Habitat. 3. woolly adelgid resistance. E. Preisser, B. Maynard, R. . Casagrande. No reported resistance in . Tsuga canadensis. or . T. . caroliniana. Western . hemlock. W. hemlocks resist eastern HWA. and E. hemlocks resist western HWA. at the Spectral Curves of Hemlocks Infested With Hemlock Woolly . Adelgid. Cole . Williams, Forestry Major, Department of Natural Resources. cju97@wildcats.unh.edu. Methods. Sampling. – I sampled by filling a one gallon Ziploc bag with foliage. I moistened some tissue to seal in with each bag to keep the samples from drying out. . Tennessee Division of Forestry. Background History of HWA. Hemlock woolly adelgid (HWA) (. Adelges tsugae) . is a non-native insect pest that kills native eastern and carolina hemlocks. . (. Tsuga canadensis . combining predictive modeling with monitoring. . Tara M. Barrett. 1 . ,Greg Latta. 2. , Paul E. Hennon. 3. , Bianca N.I. Eskelson. 2. , . Hailemariam. Temesgen. 2. 1. Unaffiliated. 2. Oregon State University. cast. Junhui. Zhao, Douglas A. Maguire, Douglas B. Mainwaring, Alan . Kanaskie. Background. Young Douglas-fir plantations (≤40 yr) are tremendously important to the economic and environmental health of Oregon and Washington due to their extent and productivity (Campbell et al. 2004, Gray et al. 2005). . Adults and nymphs are 1/16. th. of an inch long and very hard to find. It produces a white wool-like covering to protect itself and its eggs. Hemlock Woolly . Adelgid. Life Cycle. Eggs are protected by woolly sacs that are produced by adult . Modeling the impacts of hemlock woolly adelgid infestation and presalvage harvesting on carbon stocks in northern hemlock . forests. Jeffrey Krebs, Jen Pontius and Paul . Schaberg. Mapping relative risk of HWA impacts on hemlock growth across the northeast. By. Owen McKenna. Since hemlock woolly adelgid populations in New England suffer from high mortality due to extreme winter cold snaps, population success relies heavily upon . reinfestation. (Parker et al., 1999). The high density regions, or hot spots, of hemlock woolly adelgid within a forest likely ensure the success of these . APPENDIX A PLANT ASSOCIATIONS The analysis area lies mostly within the Western Hemlock plant series (89 percent), but also contains the Pacific silver fir series (5 percent), Grand Fir series (3 per astern emlockTsuga canadensisLLtered stands in nearly every partof the stateBest growth is attained onmoistcool sitesIt generally attains aeetand a diameter of23 feetThe terminal shoot droopsand bends