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Imminent extinction crisis among the endemic species of the forests of Yanbaru, Okinawa, Japan

Published online by Cambridge University Press:  24 April 2009

Kuniharu Miyagi
Affiliation:
Faculty of Arts and Sciences, Okinawa International University, Ginowan, Okinawa 901-2701, Japan. Tel. & fax: +81 98 892 1111; e-mail: [email protected]
Hidetoshi Ota
Affiliation:
Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan. Tel: - 81 98 895 8937; fax: + 81 98 895 8576; e-mail: [email protected]
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Abstract

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The natural forest in Yanbaru, the northern part of the main island of Okinawa (Okinawa Hontô), is an important area for nature conservation, because it has a large number of endemic animals and plants. First, we explain the status of the most important endemic animals of Yanbaru, stressing that most of them are endangered and near extinction. Second, we show especially high species diversity of trees, insects and mites in the Yanbaru forest. However, the integrity of the Yanbaru forest is seriously threatened by clearcutting and complete removal of forest undergrowth. Although an area in Yanbaru occupied by the US Marine Corps has, to date, preserved good natural forest, a new plan to establish seven military helipads in this area is now being examined. Possible outcomes of such a development are evaluated. In addition, requests by Japanese biologists for the Defence Facilities Administration Agency, Japan to consider alternate sites for the helipads are described.

Type
Research Article
Copyright
Copyright © Fauna and Flora International 2000

References

Abe, H., Ishii, N., Kaneko, Y., Maeda, K., Miura, S. & Yoneda, M. (1994) A Pictorial Guide to the Mammals of Japan. Tôkai University Press, Tokyo [in Japanese/.Google Scholar
Anon. (1995) Forests of Yanbaru. Nature Conservation (Tokyo), Supplement to Volume for 1995 [in Japanese].Google Scholar
Anon. (1997) Revision of Red List of Amphibians and Reptiles. Section of Wild Animals and Plants, Department of Nature Conservation, The Environmental Agency of Japan, Tokyo [Mimeographed copy, in Japanese/.Google Scholar
Anon. (1998) Revision of Red List of Mammals and Birds. Section of Wild Animals and Plants, Department of Nature Conservation, The Environmental Agency of Japan, Tokyo [Mimeographed copy, in Japanese].Google Scholar
Azama, Y. (1996) Present status of the Pryer's woodpecker, Sapheopipo noguchii, and measures to preserve it. Abstract of Special Lectures on the Preservation of Bird Species in Okinawa. The Ornithological Society of Japan, Tokyo [in Japanese].Google Scholar
Azuma, S. (1974) Insect fauna of natural and substitute vegetation at Yaeyama Group, Ryukyu Island. Ecological Studies on Nature Conservation of the Ryukyu Islands, 1, 71103 [in Japanese with English summary],Google Scholar
Azuma, S. (1994) Yanbaru long-armed scarab beetle. In The Forest of Yambaru (ed. Chapter, S. Yambaru, Wild Bird Society of Japan), pp. 9899, 165. Tôyôkan, Tokyo [English summary],Google Scholar
Azuma, S., Kurosawa, Y. & Kinjo, M. (1985) Yanbaru Long-armed Scarab Beetle. Survey Report I. Education Council, Okinawa Prefecture, Naha, Japan [in Japanese].Google Scholar
Azuma, S., Kinjo, M. & Sato, F. (1986) Yanbaru Long-armed Scarab Beetle. Survey Report II. Education Council, Okinawa Prefecture, Naha, Japan [in Japanese].Google Scholar
Azuma, S., Sasaki, K. & ltô, Y. (1997) Effects of undergrowth removal on the species diversity of insects in natural forests of Okinawa Hontô. Pacific Conservation Biology, 3, 156160.CrossRefGoogle Scholar
Department of Agriculture and Forestry, Okinawa Prefectural Government (1992) Transition of Clear-cut Area in the Northern Region of Okinawa Island. Okinawa Prefectural Government, Naha, Japan [in Japanese].Google Scholar
Department of Nature Conservation, Environmental Agency (1991) Research on Indispensable Factors for Conservation of Species of Wild Animals and Plants Living in the Southwestern Islands of japan. Environmental Agency, Tokyo [in Japanese].Google Scholar
Environmental Agency of Japan (2000) Threatened Wildlife of Japan: Red Data Book—Reptilia and Amphibia, 2nd edn.Japan Wildlife Research Center, Tokyo [in Japanese with English summary].Google Scholar
Hanawa, S. (1998) Results of surveys of avifauna in Yanbaru, as a teaching material. In Abstracts of Miyake Nature Center 5th Anniversary International Symposium on Ecotourism and Island Birds, 24. Miyake-mura, Tokyo [in Japanese].Google Scholar
Itô, Y. (1995) Forests of Yanbaru, Okinawa: Why Can We Not Conserve its Nature of Outstanding Universal Value? Iwanami Shoten, Tokyo [in Japanese].Google Scholar
Itô, Y. (1997a) Biological explanation: nature and living organisms in Yanbaru, Okinawa. In Okinawa-Yanbaru Subtropical Forests: Don't Destroy Treasures of the World (eds Taira, K. and Itô, Y.), pp. 85127. Kôbunken, Tokyo [in Japanese].Google Scholar
Itô, Y. (1997b) Diversity of forest tree species in Yanbaru, the northern part of Okinawa Island. Plant Ecology, 133, 125133.CrossRefGoogle Scholar
Itô, Y. & Aoki, J. (1999) Species diversity of soil-inhabiting oribatid mites in Yanbaru, the northern part of Okinawa Hontô, and the effects of undergrowth removal on it. Pedobiologia, 43, 110119.CrossRefGoogle Scholar
Itô, Y., Takamine, H. & Yamauchi, K. (1998) Abundance and species diversity of ants in forests of Yanbaru, the northern part of Okinawa Hontô with special reference to effects of undergrowth removal. Entomological Science, 1, 347355.Google Scholar
IUCN (1999) The IUCN Red List of Threatened Animals: Database Search Results. IUCN, Gland, Switzerland.Google Scholar
Lande, R. (1996) Statistics and partitioning of species diversity, and similarity among multiple communities. Oikos, 76, 513.CrossRefGoogle Scholar
MacArthur, R.H. (1955) Fluctuation of animal populations and a measure of community stability. Ecology, 36, 533536.CrossRefGoogle Scholar
McWhirter, D.W., Ikenaga, H., Iozawa, H., Shoyama, M. & Takehara, K. (1996) A check-list of the birds of Okinawa Prefecture with notes on recent satus including hypothetical records. Bulletin of Okinawa Prefectural Museum, 22, 33152.Google Scholar
Maeda, K. & Matsumura, S. (1998) Two new species of vespertilionid bats, Myotis and Murina (Vesperetilionidae: Chiroptera) from Yanbaru, Okinawa Island, Okinawa Prefecture, Japan. Zoological Science,15, 301307.CrossRefGoogle Scholar
Maeda, N. & Matsui, M. (1989) Frogs and Toads of Japan. Bun-ichi Sôgô Shuppan, Tokyo [in Japanese].Google Scholar
Myrmecological Society of Japan (Nippon Ari-rui Kenkyûkai) (1989) Keys and Explanations of Japanese Ants, I Myrmecological Society of Japan. Kodaira, Tokyo [in Japanese].Google Scholar
Myrmecological Society of Japan (1991) Keys and Explanations of Japanese Ants, II Myremecological Society of Japan. Kodaira, Tokyo [in Japanese].Google Scholar
Myrmecological Society of Japan (1992) Keys and Explanations of Japanese Ants, III Myrmecological Society of Japan. Kodaira, Tokyo [in Japanese].Google Scholar
Nakao, S. (1990) Natural History of Cicadas. Chû-ô Kôronsha, Tokyo [in Japanese].Google Scholar
Ohmija, T. (1997) Red soil pollution. In To Know the Nature of Okinawa (eds Ikehara, S. and Kato, Y.), pp. 167183. Tsukiji Shokan, Tokyo [in Japanese].Google Scholar
Omura, M, Miyata, I. & Hosokawa, T. (1969) Forest vegetation of Minamata Special Research Area of IBP. Memoires of Faculty of Science, Kyushu University. Series E, Biology, 5, 7794.Google Scholar
Ornithological Society of Japan (1997) A list of Japanese birds. Japanese Journal of Ornithology, 41, 5991.Google Scholar
Ota, H. (2000) The current geographic faunal pattern of reptiles and amphibians of the Ryukyu Archipelago and adjacent regions. Tropics, 10, 5162.CrossRefGoogle Scholar
Ota, H. & Nakagawa, H. (1985) Notes on the specimens of reptiles deposited in Shiretoko Museum, Shari, eastern Hokkaido, Japan. Bulletin of Shiretoko Museum, 7, 16 [in Japanese with English summary],Google Scholar
Pielou, E.C. (1969) An Introduction to Mathematical Ecology. Wiley-Interscience, New York.Google Scholar
Shinjo, K. & Miyagi, Y. (1988) Flora of Kunigami Area of Okinawa Island. In Urgent Research on National Monuments in the Kunigame Area: Research Series of National Monuments of Okianwa Prefecture, No. 30. Education Committee, Okinawa Prefectural Government, pp. 117193. Naha, Japan [in Japanese],Google Scholar
Simpson, E.H. (1949) Measurement of diversity. Nature, London, 163, 688.CrossRefGoogle Scholar
Tatewaki, M. & Igarashi, T. (1971) Forest vegetation in Teshio-Nakagawa Area of Hokkaido University Forests. Research Reports of University Forests, Hokkaido University, 28, 1192 [in Japanese with English summary].Google Scholar
Terayama, M. & Kihara, A. (1994) Distribution Maps of Japanese Ants. Myrmecological Society of Japan. Kodaira, Tokyo [in Japanese].Google Scholar
Tsuchiya, M. & Miyagi, K. (1991) Observations of Nature on the Southern Islands. Tokai University Press, Tokyo [in Japanese].Google Scholar
Yamauchi, K. & Ogata, K. (1995) Social structure and reproductive systems of tramp versus endemic ants (Hymenoptera: Formicidae) of the Ryukyu Islands. Pacific Science, 49, 5568.Google Scholar
Yambaru Chapter, Wild Bird Society of Japan (1997) Status of Valuable and Introduced Animals in the Northern Part of Okinawa Island, and Effects of Introduced Animals on Populations of Valuable Animals. A Report. Yanbaru Chapter, Wild Bird Society of Japan, Kijoka, Okinawa, Japan [in Japanese].Google Scholar
Yokota, M. (1994) The plant life of Yambaru. In The Forest of Yanburu (ed. Yanbaru Chapter of Wild Bird Society of Japan), pp. 153156. Toyokan, Tokyo.Google Scholar