Impact of Hemlock Woolly Adelgid and Elongate Hemlock Scale on Early Seasonal Development of Eastern Hemlock
Herbivores can have a significant impact on plant host development. The potential effects of altering plant development is most commonly seen through defoliation, though some causes that are more cryptic. Effects in development are not as easily seen in long lived woody plant species. Hemlock woolly adelgid is a piercing-sucking herbivore that has been previously been observed to have substantial effects on eastern hemlock. Observations of bud break were carried out on a three day on, one day off rotation from April through May during 2016-2017. Data showed that hemlock woolly adelgid has a significant effect on the timing of bud break in eastern hemlock. Based on these observations, cryptic insect species have the potential of being able to have significant effects on early development for long lived woody tree species.^
"Impact of Hemlock Woolly Adelgid and Elongate Hemlock Scale on Early Seasonal Development of Eastern Hemlock"
Dissertations and Master's Theses (Campus Access).