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Rehabilitation of seasonally dry ‘ōhi‘a woodlands and mesic koa forest following the Broomsedge Fire, Hawaii Volcanoes National Park

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dc.contributor.authorLoh, Rhondaen_US
dc.contributor.authorMcDaniel, Sierraen_US
dc.contributor.authorSchultz, Matthewen_US
dc.contributor.authorAinsworth, Alisonen_US
dc.contributor.authorBenitez, Daviden_US
dc.contributor.authorPalumbo, Daviden_US
dc.contributor.authorSmith, Kimberleyen_US
dc.contributor.authorTunison, Timen_US
dc.contributor.authorVaidya, Mayaen_US
dc.date.accessioned2013-06-25T22:39:09Z-
dc.date.available2013-06-25T22:39:09Z-
dc.date.issued2007-08en_US
dc.identifier.citationLoh R, McDaniel S, Schultz M, Ainsworth A, Benitez D, Palumbo D, Smith K, Tunison T, Vaidya M. 2007. Rehabilitation of seasonally dry ‘ōhi‘a woodlands and mesic koa forest following the Broomsedge Fire, Hawaii Volcanoes National Park. Honolulu (HI): Pacific Cooperative Studies Unit, University of Hawaii at Manoa, Department of Botany. PCSU Technical Report, 147. 16 pagesen_US
dc.identifier.urihttp://hdl.handle.net/10125/29488-
dc.descriptionReports 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.abstractThe Broomsedge Fire, accidentally started June 30, 2000, burned 1008 acres of native plant communities (3,800-4,100 ft elevation) in Hawaii Volcanoes National Park. The communities affected were seasonally dry ‘ōhi‘a woodland (923 ac) and mesic koa forest (85 ac). Fire is expected to dramatically reduce fire-sensitive native vegetation and stimulate fire-adapted alien grasses, thereby increasing fire potential in the burn area. Two strategies were used to revegetate burned communities. The strategy in former seasonally dry ‘ōhi‘a (Metrosideros polymorpha) woodlands (923 ac) was to establish a community of fire-tolerant native species that could co-exist with alien grasses and wildfire. The strategy in fire damaged mesic koa (Acacia koa) forest (85 ac) was to increase fire resistance in specific sites by rebuilding the structure of the native understory thereby reducing the risk of wildfire spreading into high priority areas. This same strategy, to increase fire resistance by establishing a thick understory beneath a strip of koa forest, was used to reduce the likelihood of fire carrying between the Park and private landowners in the nearby Volcano Golf Course Subdivision. Restoration efforts began one week after the fire and continued to 07/08/03. Approximately three thousand worker days, including 1,239 volunteer days, were spent completing the project. Thirty native plant species were established in the burn by a combination of seeding >2.7 million seeds and outplanting 18,798 individuals that were propagated in park temporary greenhouses. Along with re-vegetation, workers searched and removed aggressive alien woody species (e.g. Myrica faya, Psidium cattleianum, Rubus argutus) in order to prevent their establishment in the burn. Over 7,400 individuals were discovered and chemically or manually eradicated. Permanent monitoring plots were established and the vegetation measured to evaluate the success of the project. Average survivorship of outplants in the plots was >80% (all species). There was significant recruitment of four species (Acacia koa, Bidens hawaiiensis, Dodonaea viscosa, Sophora chrysophylla) from seed additions into the burn. By 2004, eleven re-introduced native species had reached reproductive maturity in the burn area, Including four tree, three shrub, a lily, Hawaiian poppy, and two grass species. Monitoring should continue over the next few decades to evaluate long term successional outcomes as a result of the restoration project. The successful establishment of species by outplanting and artificial seeding in the Broomsedge Burn serves as a model for restoration in other fire-affected dry ‘ōhi‘a woodlands in the Park.en_US
dc.language.isoen-USen_US
dc.publisherPacific Cooperative Studies Unit, University of Hawaii at Manoa, Department of Botanyen_US
dc.relation.ispartofseriesTechnical Reporten_US
dc.relation.ispartofseries147en_US
dc.subjectBroomsedge Fireen_US
dc.subjectMetrosideros polymorphaen_US
dc.subjectAcacia koaen_US
dc.subject.lcshFire ecology -- Hawaii -- Hawaii Island.en_US
dc.subject.lcshRestoration ecology -- Hawaii -- Hawaii Island.en_US
dc.subject.lcshHawaii Volcanoes National Park (Hawaii)en_US
dc.subject.lcshKoa -- Hawaii -- Hawaii Island.en_US
dc.subject.lcshOhia lehua -- Hawaii -- Hawaii Island.en_US
dc.titleRehabilitation of seasonally dry ‘ōhi‘a woodlands and mesic koa forest following the Broomsedge Fire, Hawaii Volcanoes National Parken_US
dc.typeReporten_US
dc.type.dcmiTexten_US
Appears in Collections:The PCSU and HPI-CESU Technical Reports 1974 - current



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