6th Annual Judith Ramaley Celebration of Research and Creative Scholarship
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Poster #86 Density Gradients of Invasive Garlic Mustard (Allaria petiolata) in Woodlands in Winona, MN Amy Price Faculty Mentor: Neal Mundahl The objective of this study was to compare densities of garlic mustard Allaria petiolata at four sites in southeastern Minnesota, and to determine how far infestations extended from the introduction corridor into non-invaded habitat. Densities were measured using multiple, 0.1-m2 plots, set from the introduction corridor and intruding into the forest habitat (except at one location where plants did not extend into woodland). Densities ranged from 0 to 290 plants/m2 at the introduction corridor, and differed significantly (ANOVA p<0.01) among sites. At the three sites where infestations extended into woodland habitats, the spread of infestations ranged from 0 to 5 m, with densities at all sites decreasing significantly (linear regression p<0.05) with distance from the introduction corridor. Prevention and control methods should be put in place immediately to prevent further spread. |
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