Wednesday, 20 November 2002

This presentation is part of : Display Presentations, Subsection Cd. Behavior and Ecology

Moths as monitors of impact of prescribed burning in mixed-oak forests of southern Ohio

David J. Horn and William J. Dress. The Ohio State Universuty, Entomology, 1735 Neil Ave, Columbus, OH

Prescribed annual and triennial surface fires were compared to control units of 30 ha each in 4 study sites. Within each unit an 8-watt blacklight trap was operated May - Sept. 1995-1997 in all study sites (fewer sites 1998-2000). All Macrolepidoptera except Geometridae were identified. There was no consistent effect of burning on abundance or species richness. Variability was high and treatment units were small relative to surrounding forest. A few species, e.g. Clemensia albata (Arctiidae) appeared to decrease in burned units. There were differences in abundance and richness among sites and years. Year-to-year trends documented regional declines in populations of some species; Antheraea polyphemus (Saturniidae) declined at all sites 1995-2000. Burning may impact a few moth species but had little overall impact on diversity and abundance.

Keywords: Lepidoptera, blacklight

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