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Title: Evaluating the impact of invasive species in forest landscapes: the southern pine beetle and the hemlock woolly adelgid

Author: Waldron, John D.; Coulson, Robert N.; Cairns, David M.; Lafon, Charles W.; Tchakerian, Maria D.; Xi, Weimin; Klepzig, Kier; Birt, Andrew.

Date: 2010

Source: In: Pye, John M.; Rauscher, H. Michael; Sands, Yasmeen; Lee, Danny C.; Beatty, Jerome S., tech. eds. Advances in threat assessment and their application to forest and rangeland management. Gen. Tech. Rep. PNW-GTR-802. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest and Southern Research Stations: 687-698

Publication Series: General Technical Report (GTR)

   Note: This article is part of a larger document. View the larger document

Description: The southern pine beetle, Dendroctonus frontalis (Zimmerman) (Coleoptera: Curculionidae: Scolytinae) (SPB), is an indigenous invasive species that infests and causes mortality to pines (Pinus spp.) throughout the Southern United States. The hemlock woolly adelgid, Adelges tsugae (Annand) (Homoptera: Adelgidae) (HWA), is a nonindigenous invasive species that infests and causes mortality to Eastern hemlock (Tsuga canadensis (L.) Carr.) and Carolina hemlock (T. caroliniana Engelm.) throughout their range in Eastern North America. Both of these insect species occur in the Southern Appalachians, and both have recently caused tree mortality exceeding historical records. Herbivory by both species is of concern to forest managers, but for different reasons. In the case of the SPB, emphasis centers on forest restoration strategies, and in the case of the HWA, the concern is on predicting the impact of removing hemlock from the forest environment. Both of these issues can be investigated using a landscape simulation modeling approach. LANDIS is a simulation modeling environment developed to predict forest landscape change over time. It is a spatially explicit, landscape-scale ecological simulation model that incorporates disturbance by fire, wind, biological disturbance (insects and pathogens) and harvesting. Herein, we present a case study using LANDIS to evaluate the impact of herbivory by the SPB and HWA on forest landscapes in the Southern Appalachians.

Keywords: Invasive species, LANDIS, modeling, Southern Appalachians.

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Waldron, John D.; Coulson, Robert N.; Cairns, David M.; Lafon, Charles W.; Tchakerian, Maria D.; Xi, Weimin; Klepzig, Kier; Birt, Andrew. 2010. Evaluating the impact of invasive species in forest landscapes: the southern pine beetle and the hemlock woolly adelgid. In: Pye, John M.; Rauscher, H. Michael; Sands, Yasmeen; Lee, Danny C.; Beatty, Jerome S., tech. eds. Advances in threat assessment and their application to forest and rangeland management. Gen. Tech. Rep. PNW-GTR-802. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest and Southern Research Stations: 687-698.

 


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