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Beetle Capture at Artificially Created Snags in Harvested Stands Item Info

In north-central Idaho, a stand was harvested leaving artificially created snags that were cut by a single grip cut-to-length harvester 4-7m above ground. Beetle populations were monitored on two species of snags, Pseudotsuga menziesii var glauca ((Beissn.) Franco) and Abies grandis ((Dougl. Ex. D.Don) Lindl.), using 12-unit Lindgren funnel traps. There was a significant difference (p<.05) between the two host species in the overall abundance (more beetles were captured near Douglas-fir snags), but family diversity and richness remained relatively constant throughout the trapping dates. Five families were selected for closer examination (Scolytidae, Curculionidae, Buprestidae, Cerambycidae, and Cleridae). Identified abundance of the selected families was not significantly different between snag species except for the Scolytidae, which were captured in significantly higher number near the Douglas-fir snags. The scolytid population was largely comprised of a single species, Hylastes nigrinus Mannerheim. Thus, while abundance is greater on Douglas-fir versus grand fir for the scolytids, the other families were similarly distributed between the two tree species.

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Title:
Beetle Capture at Artificially Created Snags in Harvested Stands
Creator:
Sandoval, Stephani J.
Date Created:
2003
Description:
In north-central Idaho, a stand was harvested leaving artificially created snags that were cut by a single grip cut-to-length harvester 4-7m above ground. Beetle populations were monitored on two species of snags, Pseudotsuga menziesii var glauca ((Beissn.) Franco) and Abies grandis ((Dougl. Ex. D.Don) Lindl.), using 12-unit Lindgren funnel traps. There was a significant difference (p<.05) between the two host species in the overall abundance (more beetles were captured near Douglas-fir snags), but family diversity and richness remained relatively constant throughout the trapping dates. Five families were selected for closer examination (Scolytidae, Curculionidae, Buprestidae, Cerambycidae, and Cleridae). Identified abundance of the selected families was not significantly different between snag species except for the Scolytidae, which were captured in significantly higher number near the Douglas-fir snags. The scolytid population was largely comprised of a single species, Hylastes nigrinus Mannerheim. Thus, while abundance is greater on Douglas-fir versus grand fir for the scolytids, the other families were similarly distributed between the two tree species.
Document Type:
Thesis
Library Call Number:
QL 576.S26 2003
Subjects:
snags habitat species diversity bark beetles cavity nesting birds artificial snags insect use patterns silviculture
UIEF Unit:
UIEF
Location:
UIEF
Latitude:
46.869607
Longitude:
-116.733856
Department:
Department of Forest Resources
Type:
text
Format:
application/pdf

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Preferred Citation:
"Beetle Capture at Artificially Created Snags in Harvested Stands", UIEF Research Exchange, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/uief/items/uief_0064.html
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