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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Forest Stand Preference of Sirex Nigricornis, and Sirex Noctilio Hazard in the Southeastern United States

Chase, Kevin D 11 May 2013 (has links)
The Eurasian wood wasp, Sirex noctilio, is considered a secondary pest in its native range; however, it has caused significant economic damage when introduced to pine plantations in the Southern Hemisphere. Sirex noctilio was recently introduced to the northeastern U.S., which has raised concerns about its potential impact on Southeastern pine plantations. This research was conducted to understand how silvicultural management affects populations of a native wood wasp, Sirex nigricornis, a wood wasp with similar ecosystem functions as S. noctilio. Sirex nigricornis abundance was higher in un-managed pine plantations than in managed plantations, mixed, and old growth forests. Additionally, geospatial models were built displaying S. noctilio hazard for the Southeastern U.S. based on oviposition host preference assays and historical outbreak information. Sirex noctilio hazard models will inform land managers about areas of greatest concern under various scenarios and should be used to decrease susceptibility of pine forests to this pest.

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