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dc.contributor.author Tunison, J Timothy en_US
dc.contributor.author Zimmer, Nicolas G en_US
dc.contributor.author Gates, Michael R en_US
dc.contributor.author Mattos, Robert M en_US
dc.date.accessioned 2009-03-11T00:07:14Z en_US
dc.date.available 2009-03-11T00:07:14Z en_US
dc.date.issued 1994-04 en_US
dc.identifier.citation Tunison JT, Zimmer NG, Gates MR, Mattos RM. 1994. Fountain grass control in Hawai'i Volcanoes National Park 1985-1992. Honolulu (HI): Cooperative National Park Resources Studies Unit, University of Hawaii at Manoa, Department of Botany. PCSU Technical Report, 91. en_US
dc.identifier.uri http://hdl.handle.net/10125/7161 en_US
dc.description Reports were scanned in black and white at a resolution of 600 dots per inch and were converted to text using Adobe Paper Capture Plug-in. en_US
dc.description.abstract Fountain grass (Pennisetum setaceum) is a perennial alien bunchgrass disruptive to native ecosystems in Hawai'i. Control of fountain grass began in Hawai'i Volcanoes National Park in the 1960's. Until 1985 the control program emphasized the core of the 8000 ha infestation in the park. Since 1985, fountain grass management has employed a two-step strategy, first controlling outlying populations and then the center of the infestation where fountain grass densities are higher. This report summarizes fountain grass population levels and workloads, 1985-1992, and thus addresses the effectiveness of a control strategy starting with satellite populations. There was a striking decline in number of fountain grass plants in satellite populations after 3-7 years of removing plants. Also, there appears to be little establishment of new populations in areas on the periphery of the main infestation and beyond. Workloads required to accomplish control of outliers decrease after intensive initial efforts. These trends indicate that the spread of fountain grass has been successfully checked, and that control efforts have been successful on the edge of the range. They also confirm the hypothesis of Moody and Mack (1988) that control is most successful when it focuses on satellite populations. Control of satellite populations should be maintained because of the capacity of fountain grass seeds to remain viable in the soil for at least 7 years. Management should also now emphasize the core of the infestation and employ the same intensive, systematic approach used with initial control of outliers. Successful control in this area cannot be predicted at this time because fountain grass densities have increased with suspension of management in 1985. However, the use of a pre-emergent herbicide promises to reduce workloads. en_US
dc.description.sponsorship National Park Service Cooperative Agreement CA 8007 2 9004 en_US
dc.language.iso en-US en_US
dc.publisher Cooperative National Park Resources Studies Unit, University of Hawaii at Manoa, Department of Botany en_US
dc.relation.ispartofseries Technical Report en_US
dc.relation.ispartofseries 91 en_US
dc.subject.lcsh Alien plants -- Control -- Hawaii -- Hawaii Island. en_US
dc.subject.lcsh Fountain grass -- Control -- Hawaii -- Hawaii Island. en_US
dc.subject.lcsh Hawaii Volcanoes National Park (Hawaii) en_US
dc.subject.lcsh Invasive plants -- Control -- Hawaii -- Hawaii Island. en_US
dc.subject.lcsh Pennisetum -- Control -- Hawaii -- Hawaii Island. en_US
dc.title Fountain grass control in Hawai'i Volcanoes National Park 1985-1992 en_US
dc.type Report en_US
dc.type.dcmi Text en_US

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