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Effects of Extreme Drought on Vegetation of a Lava Flow on Mauna Loa, Hawai'i

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Title: Effects of Extreme Drought on Vegetation of a Lava Flow on Mauna Loa, Hawai'i
Authors: Lohse, Kathleen A.
Nullet, Dennis
Vitousek, Peter M.
Issue Date: Jul 1995
Publisher: University of Hawaii Press
Citation: Lohse KA, Nullet D, Vitousek PM. 1995. Effects of extreme drought on vegetation of a lava flow on Mauna Loa, Hawai'i. Pac Sci 49(3): 212-220.
Abstract: Effects of an extreme drought were examined along an elevational
gradient on Mauna Loa Volcano, Hawai'i. The composition, vigor, and
survivorship of plants were examined on a 2400-yr-old pahoehoe lava flow at
three elevations: 1755,2000, and 2195 m above sea level. Three plant species,
Coprosma ernodeoides A. Gray, Styphelia tameiameiae (Cham. & ScWechtend.)
F. v. Muell., and Vaccinium reticulatum Sm., were encountered most frequently
at the three sites. Greatest mortality occurred at the site at 2000 m elevation,
where the drought caused a shift from a slight excess of precipitation over
evaporation to a large excess of evaporation. Occasional severe droughts may
play an important part in shaping primary succession in this region.
ISSN: 0030-8870
Appears in Collections:Pacific Science Volume 49, Number 3, 1995

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