threatening to infest the state’s hemlock and fir trees. A Facebook post from the Wisconsin DNR says what they’re calling “tiny, little critters”, hemlock woolly adelgid and balsam woolly ...

On 20 paired plots, I examined the gap size, morphology of conifers, site chronologies and site productivity in 75 year old, Douglas-fir (Pseudotsuga menziesii) and western hemlock (Tsuga heterophylla ...