A Comparison of Chionaspis Salicis Infestation Intensity Under Artificially Elevated CO2 and O3

Abstract

Elevated greenhouse gases have significant impacts on forest communities at multiple trophic levels. To understand the effect of greenhouse gases on the phytophagous Chionaspis salicis bi-weekly observations were made at the Aspen Free-air Carbon Enrichment site in northern Wisconsin. These observations show that although the presence versus absence of scale was not related to greenhouse gas treatment, the intensity of scale infestation is related to greenhouse gas treatment.