Please use this identifier to cite or link to this item: http://hdl.handle.net/10125/70301

Assessing Land Cover Dynamics and Evaluating Potential Management Implications of Gorse on Mauna Kea, Hawaii

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Item Summary

dc.contributor.advisor Trauernicht, Clay
dc.contributor.author Tribble, Sarah
dc.date.accessioned 2020-11-12T16:53:44Z
dc.date.available 2020-11-12T16:53:44Z
dc.date.issued 2020-09-02
dc.identifier.uri http://hdl.handle.net/10125/70301
dc.title Assessing Land Cover Dynamics and Evaluating Potential Management Implications of Gorse on Mauna Kea, Hawaii
dc.type Master's Project
dc.contributor.instructor Idol, Travis
dc.contributor.department Natural Resources and Environmental Management
dc.contributor.department Masters of Environmental Management
dc.description.course NREM 696
dcterms.abstract In Hawaii, invasive species have been declared “the single greatest threat to Hawaii’s economy, natural environment and to the health and lifestyle of Hawaii’s people” by the Hawaii State Legislature. On the Big island of Hawaii, a severe infestation of gorse (Ulex europaeus), occurs in the critical watersheds above Hilo. Decades of work has gone into containment and direct treatment; however, it’s still spreading. This study aims to better understand the environmental drivers of gorse expansion on Mauna Kea to inform management. I aimed to fill this gap by analyzing how distance to invaded areas, vegetative cover, fire disturbance, and annual rainfall variability might influence patterns of gorse establishment and spread. Density and probability plots were created to observe annual transitions across the range of each predictor. My results showed that under drier conditions there is a clear increase in the probability of gorse establishment, areas where bare earth cover was low but herbaceous cover was high resulted in the lowest probability of gorse establishment, and the highest density and probability of gorse establishment occurs near other invaded areas. Lastly, a Pearson’s chi-square test indicated fire promotes gorse establishment. I concluded that, the predictors used in this study do impact the spread and establishment of gorse over time. Furthermore, the data I’ve collected here can be used to develop predictive models of gorse spread into the future.
dcterms.description Includes an 18 page presentation and a 15 page report entitled Assessing Land Cover Dynamics and Evaluating Potential Management Implications of Gorse on Mauna Kea, Hawaii
dcterms.extent 15 pages
dcterms.language English
dc.type.local Research study
Appears in Collections: 2020 Capstone Projects


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