ConserveOnline - 2008 Anchusa officinalis (common bugloss) Monitoring Report

2008 Anchusa officinalis (common bugloss) Monitoring Report

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DESCRIPTION

From 2006-2006 we monitored the abundance of Anchusa officinalis (common bugloss), an invasive non-native plant species, on the Zumwalt Prairie Preserve. Monitoring was done at 8 randomly chosen sites and consisted of nested frequency monitoring (flowering and non-flowering plants) and density (flowering plants only. We found that bugloss increased from 2006-2007 but decreased from 2007-2008. Across the sampling period (2006-2007) there was a significant decrease (90% confidence) in both the density and frequency (1x1m quadrats) of flowering plants. Flowering plant densities declined from 0.24 plants / m2 to 0.06 plants / m2. Frequency of flowering plants fell from 20 to 4% of the approximately 300 1x1m quadrats sampled. The decrease in abundance was less for non-flowering plants (31 to 28%) and was not significant. Three years of herbicide management appears to be decreasing the number of flowering common bugloss plants in Camp Ck and Trail Ck on the Preserve.

CREATION DATE	June 12, 2008
LAST MODIFIED	June 12, 2008
CREATED BY	Robert V. Taylor
KEYWORDS	invasives; zumwalt praire; anchusa officinalis; monitoring
DOCUMENT PURPOSE	Reports / Analysis
LICENSE	Attribution Non-Commercial