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Publications (9)
Invasive earthworms create widespread ecological changes after they are introduced. Non-native earthworms are transported mainly through anthropogenically-mediated activities, including fishing, agriculture, horticulture, and development. Here, we review the ways in which non-native earthworms are transported to new environments. Our conceptual fra...
Several states in the Midwestern United States are using risk assessment to determine the invasiveness of introduced plant species, and each assessment process is different. This may lead to differences in results for the same species between states, creating concern about, credibility by those using the assessments. In this study, risk assessments...
Background/Question/Methods
Rhamnus cathartica (common buckthorn) and Frangula alnus (glossy buckthorn) (Rhamnaceae) are both shrubs and small trees of Eurasian origin which have become invasive in North America. In 2001, a new research program to develop biological control for buckthorns was initiated. Candidate biological control agents would b...
http://www.invasive.org/publications/GMBiocontrol.pdf
http://www.invasive.org/publications/xiiisymposium/
Yellow sweetclover is an exotic herbaceous legume common in the Great Plains of the US. Although woody legumes have been shown
to affect ecosystem processes through nitrogen (N) fixation (i.e., they can be considered “transformers” sensu Richardson
et al. (2000)), the same has not been shown for short-lived herbaceous species. The objectives of thi...
Garlic mustard, a biennial forb native to Europe, has invaded native ecosystems in forested regions in the United States. In anticipation of a biological control program being implemented in the United States for this plant, a garlic mustard monitoring program was initiated. The objective of this study was to characterize garlic mustard populations...
This study examines the impact of the exotic nitrogen-fixing legume Melilotus officinalis (L.) Lam. on native and exotic species cover in two Great Plains ecosystems in Badlands National Park, South Dakota. Melilotus is still widely planted and its effects on native ecosystems are not well studied. Melilotus could have direct effects on native plan...
"May 2005." Thesis (Ph. D.)--University of Minnesota, 2005. Photocopy.
