Native Species Regeneration Following Ungulate Exclusion and Nonnative Grass Removal in a Remnant Hawaiian Dry Forest
| Autor: | Creighton M. Litton, Jarrod M. Thaxton, T. Colleen Cole, Susan Cordell, Darren R. Sandquist, Robert J. Cabin |
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| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Pacific Science. 64:533-544 |
| ISSN: | 1534-6188 0030-8870 |
| DOI: | 10.2984/64.4.533 |
| Popis: | Hawaiian lowland dry forests have been reduced by >90% since first human contact. Restoration has focused on protection from fire and ungulates, and removal of invasive grasses as ways to stimulate native forest regeneration. Despite these efforts, natural regeneration of native plants has been infrequent. To assess effects of previous restoration treatments on natural regeneration, we monitored seed rain and dynamics of seedlings and juveniles for a period of 3 yr (2004–2007) within three restoration units within a remnant forest on the island of Hawai'i. All units had been protected from fire for many decades but differed in time since ungulate exclusion and grass removal. The units were as follows: (1) long-term restoration (fenced 1956, grass removal initiated 1995), (2) shortterm restoration (fenced and grass removal initiated 1997), and (3) unmanaged (fenced 1997, no grass removal). Overall juvenile plant abundance was highest in the short-term unit, but native abundance was highest in the... |
| Databáze: | OpenAIRE |
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