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Title: Herbivorous insect response to group selection cutting in a southeastern bottomland hardwood forest.

ABSTRACT Malaise and pitfall traps were used to sample herbivorous insects in canopy gaps created by group-selection cutting in a bottomland hardwood forest in South Carolina. The traps were placed at the centers, edges, and in the forest adjacent to gaps of different sizes (0.13, 0.26, and 0.50 ha) and ages (1 and 7 yr old) during four sampling periods in 2001. Overall, the abundance and species richness of insect herbivores were greater at the centers of young gaps than at the edge of young gaps or in the forest surrounding young gaps. There were no differences in abundance or species richness among old gap locations (i.e., centers, edges, and forest), and we collected significantly more insects in young gaps than old gaps. The insect communities in old gaps were more similar to the forests surrounding them than young gap communities were to their respective forest locations, but the insect communities in the two forests locations (surrounding young and old gaps) had the highest percent similarity of all. Although both abundance and richness increased in the centers of young gaps with increasing gap size, these differences were not significant.Weattribute the increased numbers of herbivorous insects to the greater abundance ofmore » herbaceous plants available in young gaps.« less
Authors:
; ; ;
Publication Date:
OSTI Identifier:
859201
Report Number(s):
na
Journal ID: ISSN 0046--225X; 05-20-P
DOE Contract Number:
AI09-00SR22188
Resource Type:
Journal Article
Resource Relation:
Journal Name: Environmental Entomology; Journal Volume: 34; Journal Issue: 2; Conference: na
Research Org:
USDA Forest Service, Savannah River, New Ellenton, SC
Sponsoring Org:
USDOE - Office of Environmental Management (EM)
Country of Publication:
United States
Language:
English
Subject:
60 APPLIED LIFE SCIENCES selection cutting; uneven-aged silviculture; forest openings; forest management