SOIL SEED BANKS IN MIXED OAK FORESTS OF SOUTHEASTERN OHIO
The effects of common forest management practices (burning and thinning) on the seed bank are assessed. Species composition of the soil seed bank is examined under three treatments: thin, burn, thin followed by burning, and an untreated control. Thinning was conducted in Fall 2000 and burns were conducted in Spring 2001. Soil samples were collected in March 2004, 3 years following treatment. Species composition is assessed by seedling emergence. Seventy total species are found in the seed bank. Ruderal species such as Erechtites hieraciifolia (L.) Raf., Carex spp., and Rubus spp. are the most commonly occurring species across all treatments. No significant difference in species composition or proportion of functional groups is found between any of the treatment groups. Species composition of the seed bank and above-ground vegetation are significantly different in all treatments. Species composition and canopy cover are each significantly spatially autocorrelated in the thinned and burned treatment.
School Location:USA - Ohio
Source Type:Master's Thesis
Keywords:soil seed bank spatial autocorrelation forest management disturbance
Date of Publication:01/01/2006