Recent Bullard Fellow Bernhard Stadler, from the University of Bayreuth in Germany along with collaborators including Harvard Forest Ecologist David Orwig, examined the impacts of the introduced insect, the hemlock woolly adelgid on spatial and temporal canopy processes in New England hemlock forests. Results suggest that adelgid-induced changes in tree physiology, forest microbiology, and stand-level nutrient cycling occurred well in
commemorative souvenir stamp sheet. The sheet's reverse side provides the common and scientific names of the 27 animals and plants pictured on the front. The artist's rendition was modelled after Harvard Pond and was created with some input from Harvard
Florida International University, focuses on leaf color change. The site will provide a central repository for images, references and scientific explanations and theories relating to leaf pigment changes. Though this site focuses on the New England area, the