ConserveOnline - Common Bugloss Analysis and Report (2010)

Common Bugloss Analysis and Report (2010)

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DESCRIPTION

From 2006-2010 we monitored the abundance of Anchusa officinalis (common bugloss), an invasive, non-native plant species, on the Zumwalt Prairie Preserve in northeastern Oregon. Monitoring was performed at 8 randomly chosen sites where the frequency of (flowering and non-flowering plants was measured in 1m2 plots and density of flowering plants was measured by counting plants in quadrats or belts. Changes in sample frequency and density were tested using a repeated measures analysis (MANOVA) to gauge whether significant change had occurred in the abundance of this noxious weed since monitoring began in 2006. We set our type I (likelihood of detecting change when none had actually occurred) and type II (not detecting a change that had indeed occurred) at 10% and 90% respectively. Results suggest that there was no change in the overall abundance of the bugloss population as measured by frequency (p=.35) or density (p=.14).

CREATION DATE	March 23, 2011
LAST MODIFIED	March 23, 2011
CREATED BY	Vincent Jansen
AUTHOR(S)	Jansen, Vincent S.; Taylor, Robert V.; Dingeldein, J.
KEYWORDS	anchusa officinalis; invasives
DOCUMENT PURPOSE	Data Sets and Statistics; Unpublished Documents; Reports / Analysis; Maps; Other; Publications
PUBLICATION YEAR	No Publication Year
REVIEWED STATUS	Not Reviewed
LICENSE	Attribution Non-Commercial