PPT-Hemlock

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. It was first observed in Queens New York in 1908 Now Found in 13 states including New Hampshire Elongate Hemlock Scale Elongate Hemlock Scale Fiorinia Fiorinia externa externa Jen Weimer NH Division of Forests Lands brPage 4br EHS Infestation in MILLERPIERCE DAVID A ORWIG AND EVAN PREISSER 13 Environ Entomol 392 51357552519 2010 DOI 101603EN09298 ABSTRACT In the eastern United States two invasive specialist insects share a native host plant Eastern hemlock Tsuga canadensis In recent years Why Are Eastern Hemlock Trees Important?Eastern hemlocks (Tsuga are one of the longest-lived tree species and can live up to 800 years in eastern North America. These evergreens typically grow along s 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 . 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 . 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. . . Plants. Ms. Gottfried . Most likely you have them in your pasture…. HUNDREDS of plants that are common in North America are poisonous to horses.. Very few green pastures have no poisonous plants in them.. Leah Rathbun. University of British Columbia. Presented at . Western Mensurationists 2010. Location. Coastal Western Hemlock (CWH) BEC zone. Temperatures - 5.2 to 10.5˚ C . Second growth uneven- and even-aged multi-species stands regenerated naturally and from plantings. . 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 . Gill, Amanda . Klemmer. , . Robert . Northington. , Thomas . Par. Experimental evidence that hemlock decline . changes the . role of detritus in . freshwater food . webs. Multiple effects of climate change on NE freshwaters. 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). . 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 . 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