Elevation-mediated effects of balsam woolly adelgid on southern Appalachian spruce-fir forests

V. H. Dale; R. H. Gardner; D. L. Deangelis; C. C. Eagar; J. W. Webb

doi:10.1139/x91-227

Elevation-mediated effects of balsam woolly adelgid on southern Appalachian spruce-fir forests

V. H. Dale, R. H. Gardner, D. L. Deangelis, C. C. Eagar, J. W. Webb

Biology

Research output: Contribution to journal › Article

12 Scopus citations

Abstract

The pattern of distribution of endemic Fraser fir Abies fraseri in the S Appalachians is being affected by infestation of the exotic balsam woolly adelgid (BWA) Adelges piceae. Prediction of the effects of BWA requires an assessment of 1) the population dynamics of the BWA and the fir, 2) the prevailing physical conditions that affect the spread of BWA, and 3) the subsequent pattern of fir mortality. This paper predicts the patterns of fir mortality and recovery on an elevation gradient by using a population model with site-specific environmental conditions and ecological interactions. Temperature range and amplitude, which affect survival and development rates of BWA, can have an indirect influence on the spatial pattern of living trees. Persistence of both species, with oscillations in numbers over time and space, is probable. -from Authors

Original language	English (US)
Pages (from-to)	1639-1648
Number of pages	10
Journal	Canadian Journal of Forest Research
Volume	21
Issue number	11
DOIs	https://doi.org/10.1139/x91-227
State	Published - Jan 1 1991

ASJC Scopus subject areas

Global and Planetary Change
Forestry
Ecology

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Dale, V. H., Gardner, R. H., Deangelis, D. L., Eagar, C. C., & Webb, J. W. (1991). Elevation-mediated effects of balsam woolly adelgid on southern Appalachian spruce-fir forests. Canadian Journal of Forest Research, 21(11), 1639-1648. https://doi.org/10.1139/x91-227

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abstract = "The pattern of distribution of endemic Fraser fir Abies fraseri in the S Appalachians is being affected by infestation of the exotic balsam woolly adelgid (BWA) Adelges piceae. Prediction of the effects of BWA requires an assessment of 1) the population dynamics of the BWA and the fir, 2) the prevailing physical conditions that affect the spread of BWA, and 3) the subsequent pattern of fir mortality. This paper predicts the patterns of fir mortality and recovery on an elevation gradient by using a population model with site-specific environmental conditions and ecological interactions. Temperature range and amplitude, which affect survival and development rates of BWA, can have an indirect influence on the spatial pattern of living trees. Persistence of both species, with oscillations in numbers over time and space, is probable. -from Authors",

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