Effects of deer browsing on the early stage of pyrogenic succession on Miyajima Island,southwestern Japan |
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Authors: | Toshinori Okuda Kaneyuki Nakane |
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Institution: | (1) Botanical Institute, Faculty of Science, Hiroshima University, Naka-ku, 730 Hiroshima, Japan;(2) Department of Environmental Studies, Faculty of Integrated Arts and Sciences, Hiroshima University, Naka-ku, 730 Hiroshima, Japan;(3) Present address: Global Environment Division, National Institute for Environmental Studies, 305 Tsukuba, Ibaraki, Japan |
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Abstract: | The early stage of forest regeneration on Miyajima Island, southewstern Japan, was studied for three years after a fire in
1984, with respect to the effects of deer browsing. The regeneration patterns of woody species, in terms of the biomass increment
and browsing damage to plants, were classified into the following three groups: non- or rarely browsed species with little
increment of biomass, heavily browsed with little increment, and heavily browsed with large increment. The aboveground biomass
increased from 0.4 kg to 2.7 kg per 100 m2 during three years, and was less than half of the biomass obtained in other burnt pine forests on the adjacent deer-free
islands. About 28% of the plant biomass was consumed by deer. The effects of browsing on forest regeneration were heavier
at lower than that at the higher altitudes. On this island, deer browsing seems to have an important effect on vegetational
succession in the burnt areas. |
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Keywords: | Aboveground biomass Deer browsing Forest fire Open woodland Pyrogenic succession |
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