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Abstract Detail


Ecological Section

Quinn, Caitlin [1], McKnight, Karl [2], Burnham, Mark [3], Gerritsen, Alida [4].

A comparison of two sampling techniques used to understand autecological requirements necessary for Carex growth in a northern hardwood forest.

In attempt to define the autecological requirements necessary for Carex growth and to compare two sampling techniques, we collected abiotic and biotic measures associated with 31 Carex species found at Glen Meal State Forest (St. Lawrence County, New York). In the summer of 2007 sedge densities were measured in one meter2 focal plots centered around each sedge, a technique called Plant Centered Subjective Sampling (PCSS). An associated one meter2 plot was located ten meters from each focal plot. In 2008 plots were sampled regularly at ten meter increments along one 1810 meter transect. PCSS focal plots differed significantly from regular sampling plots for phosphorous, pH, and percent cover of living, litter, herbaceous species and gramminoid species. However, the associated plots ten meters removed from the PCSS focal plots resembled the plots sampled with regular placement in percent living cover, litter, and rock, canopy cover, percent cover of cryptogams, herbaceous species, and trees and shrubs. Species richness for regular sampling plots was 15 whereas PCSS plots were found to have 28 species. We found considerable similarity between PCSS and regular sampling plots for co-occurrences of C. novae-anglei, C. gracillima, C. debilis, and C. communis in PCSS and regular sampling plots. We conclude that plot centered subjective sampling has advantages and disadvantages worth further study.


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1 - St. Lawrence University, Biology, St. Lawrence University CMR# 2305, 23 Romoda Dr., Canton, NY, 13617, United States
2 - St. Lawrence University, Biology, 23 Romoda Dr., Canton, NY, 13617, United States
3 - St. Lawrence University, Biology, St. Lawrence University CMR# 1905, Canton, NY, 13617, United States
4 - St. Lawrence University, Biology, St. Lawrence University CMR# 2044, Canton, NY, 13617, United States

Keywords:
Carex
ecology
Sedge.

Presentation Type: Oral Paper:Papers for BSA Sections
Session: 14
Location: Wasatch B/Cliff Lodge - Level C
Date: Monday, July 27th, 2009
Time: 10:45 AM
Number: 14003
Abstract ID:567


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