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Long-Term Response of a Forest Watershed EcosystemClearcutting in the Southern Appalachians$
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Wayne T. Swank and Jackson R. Webster

Print publication date: 2014

Print ISBN-13: 9780195370157

Published to Oxford Scholarship Online: May 2015

DOI: 10.1093/acprof:osobl/9780195370157.001.0001

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Watershed Clearcutting and Canopy Arthropods

Watershed Clearcutting and Canopy Arthropods

(p.146) 9 Watershed Clearcutting and Canopy Arthropods
Long-Term Response of a Forest Watershed Ecosystem

Barbara C. Reynolds

Timothy D. Schowalter

D. A. Crossley

Oxford University Press

This chapter examines the impact of the Watershed 7 (WS 7) clearcut on canopy arthropods. Given the expected shift in plant types, how would the community of arthropods respond? Would the increase in herbaceous vegetation influence the community of insects on the tree vegetation? Would the regrowth foliage tissue be more tender, perhaps engendering outbreaks of defoliators? And, could those factors most responsible for the development of the insect community be isolated? It is shown that regrowth tree foliage one year after the clearcut had a greater mass of chewing herbivores, sucking herbivores, and omnivores, such as caterpillars, aphids, and ants, respectively, compared to the adjacent control watershed. Predators, such as spiders and predaceous beetles, decreased. Differences for black locust were especially marked, with greater densities seen especially for sucking herbivores and omnivores, particularly ants.

Keywords:   watersheds, clearcutting, canopy arthropods, insects, herbivores, omnivores, black locusts, insect community

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