Creating physical gaps in the forest canopy give eastern hemlocks more access to resources and help those trees withstand infestation by an invasive insect.
A new study finds that creating physical gaps in the forest canopy give eastern hemlocks more access to resources and help those trees withstand infestation by an invasive insect. The approach adds another tool to the toolkit that foresters can use to protect these trees.
"This study focused on silviculture. Is there a way to actively manage a forest to improve the health of eastern hemlocks?" For comparison, the researchers also monitored a control group which consisted of hemlocks that didn't have canopy gaps created around them.The researchers collected data on the trees every six months from late 2017 through early 2021. One tree had died , but overall, even though all of the"canopy gap" trees in the study were infested with woolly adelgid, their health had substantially improved. By comparison, the health of the control trees continued to decline.
"The canopy gaps give the trees better access to resources like water and nutrients that help them deal with the adelgid," Jetton says."While it doesn't cause the adelgid population to decrease, it may be giving trees the ability to 'outgrow' the insect's impact, at least temporarily."
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Canopy gaps help Eastern hemlock outlast invasive insectA new study finds that creating physical gaps in the forest canopy gives Eastern hemlocks more access to resources and help those trees withstand infestation by an invasive insect. The approach adds another tool to the toolkit that foresters can use to protect these trees.
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