Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Daniel A. Herms; William J. Mattson; David N. Karowe; Mark D. Coleman; Terry M. Trier; Bruce A. Birr; J. G. Isebrands
    Date: 1996
    Source: In: Hom, John; Birdsey, Richard; O'Brian, Kelly, eds. Proceedings 1995 meeting of the northern global change program; Gen. Tech. Rep. NE-214. Radnor, PA: U. S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station: 43-55.
    Publication Series: General Technical Report (GTR)
    Station: Northeastern Research Station
    PDF: View PDF  (763.41 KB)

    Description

    Increasing atmospheric concentrations of ozone and CO2 affect many aspects of tree physiology. However, their effects on tree resistance to insects have received relatively little attention. The objectives of this study were to test the effects of elevated CO2 and ozone on the resistance of three quaking aspen (Populus tremuloides) clones (216, 259, and 271) to first and fourth instars of four Lepidoptera species: gypsy moth (Lymantria dispar), forest tent caterpillar (Malacosoma disstria), large aspen tortrix (Choristoneura confictana), and whitemarked tussock moth (Orgyia leucostigma). Larval survival, growth rates, and nutritional indices were quantified. There were no treatment effects on larval survival. Elevated CO2 decreased the growth rates of both instars of all species, except that of first instar forest tent caterpillar on aspen clone 216, which was increased. Elevated ozone increased the growth of first and fourth instars of all insect species tested. The treatment effects on growth rate were generally caused by their effects on the ability of larvae to convert digested food to biomass (ECD). Elevated ozone increased ECD. The effects of elevated CO2 on ECD were clone dependent: elevated CO2 decreased ECD on clones 271 and 259, but increased ECD on clone 216. Ozone had no effect on larval consumption rates. Elevated CO2 decreased the consumption rate of large aspen tortrix but had no effect on the other species. This contrasts with other studies, in which elevated CO2 generally increased insect consumption. There were no statistically significant interactions between the CO2 and ozone treatments for any of the variables measured.

    Publication Notes

    • Check the Northern Research Station web site to request a printed copy of this publication.
    • Our on-line publications are scanned and captured using Adobe Acrobat.
    • During the capture process some typographical errors may occur.
    • Please contact Sharon Hobrla, shobrla@fs.fed.us if you notice any errors which make this publication unusable.
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Herms, Daniel A.; Mattson, William J.; Karowe, David N.; Coleman, Mark D.; Trier, Terry M.; Birr, Bruce A.; Isebrands, J. G. 1996. Variable performance of outbreak defoliators on aspen clones exposed to elevated CO2 and O3. In: Hom, John; Birdsey, Richard; O''Brian, Kelly, eds. Proceedings 1995 meeting of the northern global change program; Gen. Tech. Rep. NE-214. Radnor, PA: U. S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station: 43-55.

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/13384