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Kraemer, George P.
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Spring 2025
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2025
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Garlic mustard (Alliaria petiolata) is an invasive species originating in Europe and Asia that was introduced to the United States in the 19th century. Since then, it has been found around the east coast and up to Canada. This study aims to determine the reproductive output of garlic mustard by measuring total plant mass, seed mass, percent seed mass per plant, and estimated seed output from four sites in New York. Two were located on Purchase College Campus in Westchester (Westchester 1, Westchester 2), the other two were located upstate near Woodstock, New York (Catskills 1, Catskills 2). Twenty five plants from each location were collected, weighed, and had their seeds extracted and weighed. Five random seed samples from each site were selected with fifty seeds weighed from each to get average seed mass per site. Research demonstrated the Catskills sites being favored for greater plant mass, seed mass, and seed count, however, site Westchester 2 demonstrated most efficient seed output for its plant mass, despite being the lowest in plant mass and total seed mass. This indicates a trade off between total seed output and resource use efficiency, possibly due to environmental factors. More studies are needed to determine causes for garlic mustard favoring the Catskills sites and resource usage.
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