Germination of Invasive Plant Seeds after Digestion by Horses in California

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dc.contributor.author Quinn, Lauren D.
dc.contributor.author Kolipinski, Mietek
dc.contributor.author Coelho, Vânia R.
dc.contributor.author Davis, Bonnie
dc.contributor.author Vianney, John-Mary
dc.contributor.author Batjargal, Orgiltuya
dc.contributor.author Alas, Monika
dc.contributor.author Ghosh, Sibdas
dc.date.accessioned 2020-02-12T07:35:43Z
dc.date.available 2020-02-12T07:35:43Z
dc.date.issued 2008-10
dc.identifier.uri DOI: 10.3375/0885-8608(2008)28[356:GOIPSA]2.0.CO;2
dc.identifier.uri http://dspace.nm-aist.ac.tz/handle/123456789/551
dc.description This research article published by Natural Areas Journal Volume 28 (4), 2008 en_US
dc.description.abstract Using a unique sterile design intended to eliminate outside seed contamination of horse feces, we investigated whether weed seeds germinate after digestion by horses. Feces were collected from selected National Parks and other locations in central and northern California. All potted fecal samples were irrigated and grown in an enclosed sterile nursery environment. Thirty-two plant species emerged from these fecal samples, 24 of which were not native to California. None of these were identified on the California Department of Agriculture’s Noxious Weed List, which is used as a basis to certify equine feed as weed free. However, seven of the non-native species are identified as moderately invasive on the California Invasive Plant Council’s (Cal-IPC) list. These species are: Hirschfeldia incana, Hordeum marinum, Lolium multiflorum, Mentha pulegium, Rumex acetosella, Trifolium hirtum, and Vulpia myuros. In addition, the following four non-native plants are listed at the limited invasiveness level on the Cal-IPC list: Hypochaeris glabra, Lythrum hyssopifolium, Medicago polymorpha, and Poa pratensis. Because we did not survey invasive plant cover in locations from which we sampled, we cannot guarantee that species identified in our samples would have also germinated in the field. Our results add to a growing body of literature documenting germination of seeds after passing through the digestive system of horses and suggest that conscientious horse owners should select feed sources that are free of weeds. We also find that the current list of noxious weeds used to certify weed-free feed for equines should be comprehensive. en_US
dc.language.iso en en_US
dc.publisher Natural Areas Journal en_US
dc.subject horse feces en_US
dc.subject horse manure en_US
dc.subject invasive plant germination en_US
dc.subject non-native plants en_US
dc.subject weed seeds en_US
dc.title Germination of Invasive Plant Seeds after Digestion by Horses in California en_US
dc.type Article en_US

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