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Abstract Detail


Recent Topics Posters

Hildebrand, Terri J. [1], Gabel, Mark [2], Haufler, Christopher H. [3].

Responses of Lycopodium dendroideum (Lycopodiaceae) to canopy removal and stem damage.

Rapidly changing environments associated with climate change and land management influence the growth of many plant species. This study explored the responses of plant species to a managed landscape over an extended time period. We provide new insights on the survival, growth and reproductive responses of a lycopod species (Lycopodium dendroideum) as well as the additional influence of timber management on associated plant groups. Baseline data were gathered over two growing seasons on plots in the Black Hills National Forest of South Dakota. Growth habit of these disjunct South Dakota populations was similar to that in other populations studied. Treated plots occurring within a timber removal area experienced a reduction in surrounding canopy; some treated plots were also subjected to horizontal stem damage; control plots were assayed adjacent to the project area. Survival and reproduction of L. dendroideum was measured through vertical stem counts and growth habit was determined by monitoring individual stems. Additionally, plant species associates and their cover were recorded. This long-term demographic study collected post-treatment data for five years. With only a 13% reduction in surrounding canopy, Lycopodium clones showed reduced stem growth, but there was no significant difference between the reduced canopy plots and those where horizontal stem damage also occurred. These results are consistent with the physiological features of shade plants. Best management practices are recommended for species that have evolved in low-light environments.


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1 - Southern Utah University, Biology, Life Science 184b, 351 W University Boulevard, Cedar City, Utah, 84720, U
2 - Black Hills State University, Department of Biology, Box 9003, Spearfish, South Dakota, 57799, USA
3 - University of Kansas, Department of Ecology & Evolutionary Biology, Haworth Hall, 1200 Sunnyside Ave, Lawrence, Kansas, 66045-7534, USA

Keywords:
irradiance
climate change
physiological integration.

Presentation Type: Recent Topics Poster
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P79003
Abstract ID:2500


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