Research on native plants for coastal wetland restoration on O'ahu

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2003-12
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Brimacombe, Karen A.
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Duffy, David
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Botany (Ecology, Evolution, & Conservation Biology)
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University of Hawaii at Manoa
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Outplanting field trials were conducted to identify native wetland plant species that would be useful to coastal wetland restoration on Oʻahu. The effects of soil salinity and soil temperature, initial planting density, and removal of competition on survival and growth of outplanted species were examined. Germination response of four native wetland sedges to different water, salinity and temperature regimes was also investigated. Final survival exceeded 70 percent in four of the seven outplanted species. Soil salinity and soil temperature were negatively correlated with survival in only one species. Planting density and removal of competition had little effect on final survival and growth of outplanted species. Germination under experimental conditions exceeded 25 percent in only two of the four sedge species studied. Overall, seeds germinated to a higher percentage under lower temperatures and salinities than under higher temperatures and salinity levels. Water level had little effect on final germination percentage.
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xi, 113 leaves
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Theses for the degree of Master of Science (University of Hawaii at Manoa). Botany (Ecology, Evolution and Conservation Biology); no. 3819
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