Conservation and management of terrestrial mammals in Japan: its system and practices

Authors

  • Takashi Saitoh
  • Koichi Kaji
  • Masako Izawa
  • Fumio Yamada

Keywords:

Amami rabbit, Extinction rate, Forests, Management, Leopard cat, Flying fox

Abstract

Introduction: One hundred and one native terrestrial mammalian species, excluding Sirenia, Cetacea, Phocidae, and Otariidae, inhabit or inhabited Japan, and 51.5 % of them are endemic, most being forest dwellers. Four species, the wolf, the Okinawa flying fox, the Bonin Pipistrelle, and the Japanese river otter went extinct during the modern age. The relatively small extinction rate in Japan is probably because forest destruction has been limited. About two thirds of Japanese lands are still covered by forests (25.10/37.79 million ha; 66.4 % as of 2011 by Forestry Agency of Japanese Government). However, the number of species that are ranked high in conservation status is not small; 5, 15, and 8 species are ranked “Vulnerable†(VU), “Endangered†(EN), and “Critically endangered†(CR), respectively. The total number of species ranked in these three categories is 28, and the percentage (28.9 % = 28/97) is higher than the world standard. This situation may be caused by extensive construction of artificial forests from 1950’s to 1970’s, during which many natural forests were cut and transformed to man-made forests.Discussion and Conclusions: The proportion of natural forests was reduced to about 40 % of the total area of forests by 2013. The most influential laws for wildlife conservation and management in Japan are the “Act on the Conservation of Endangered Species of Wild Fauna and Flora†and “Wildlife Protection and Proper Hunting Actâ€. The Amami rabbit (Pentalagus furnessi), the Bonin flying fox (Pteropus pselaphon), a subspecies of Ryukyu flying fox (Pteropus dasymallus daitoensis), and two subspecies of the leopard cat (Prionailurus bengalensis iriomotensis and P. b. euptilurus) are conserved under the “Act on Conservation of Endangered Species of Wild Fauna and Floraâ€, whereas the conservation of many endemic terrestrial species that are ranked high in conservation status are not implemented in Japanese laws. Recently many management practices have been developed for overabundant populations of the sika deer (Cervus nippon) and the wild boar (Sus scrofa) under “Wildlife Protection and Proper Hunting Actâ€.Key words: Amami rabbit, extinction rate, flying fox, forests, Leopard cat, management, Sika deer, wild boar, wildlife legislation

Author Biographies

Takashi Saitoh

Field Science Center, Hokkaido University, Kita 11, Nishi 10, Sapporo 060-0811, Japan

Koichi Kaji

Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu 183-8509, Japan

Masako Izawa

Faculty of Science, University of the Ryukyus, Nishihara, Okinawa, 903-0213, Japan

Fumio Yamada

Forestry and Forest Products Research Institute, Tsukuba, 305-8687, Japan

References

DIAMOND, J. M. 2005. Collapse: How Societies Choose to Fail or Succeed. Viking. New York, U.S.A.

FUKASAWA, K., T. MIYASHITA, T. HASHIMOTO, M. TATARA, AND S. ABE. 2013. Differential population responses of native and alien rodents to an invasive predator, habitat alteration and plant masting. Proceeding of the Royal Society B 280:1773 20132075 20132075.

INABA, M., S. TAKATSUKI, K. UEDA, M. IZAWA, H. SUZUKI, AND K. HORIKOSI. 2002. An urgent appeal for conservation of the Bonin flying fox,Pteropus pselaphon Layard, an endangered species. Japanese Journal of Conservation Ecology 7:51-61.

IZAWA, M., T. DOI, N. NAKANISHI, AND A. TERANISHI. 2009. Ecology and conservation of two endangered subspecies of the leopard cat (Prionailurus bengalensis) on Japanese islands. Biological Conservation 142:1884-1890.

JAPAN WILDLIFE RESEARCH CENTER. 1988. Research Report on Environmental Habitat of the Tsushima leopard cat. Japan Wildlife Research Center. Tokyo, Japan. In Japanese.

JAPAN WILDLIFE RESEARCH CENTER. 1994. Research Report on Environmental Habitat of the Iriomote cat. Japan Wildlife Research Center. Tokyo, Japan. In Japanese.

JAPAN WILDLIFE RESEARCH CENTER. 2005. Research Report on Environmental Habitat of the Tsushima leopard cat (2004). Japan Wildlife Research Center, Tokyo, Japan. In Japanese.

KINJO, K. AND M. IZAWA. 2009. Pteropus pselaphone Layard, 1829. Pp. 56-57 in The Wild Mammals of Japan. (Ohdachi, S. D., Y. Ishibashi, M. A. Iwasa, and T. Saito, eds.). Shoukadoh. Kyoto, Japan

KINJO, K., AND A. NAKAMOTO. 2009. Pteropus dasymallus Temminck, 1825. Pp. 52-53 in The Wild Mammals of Japan (Ohdachi, S. D., Y. Ishibashi, M. A. Iwasa, and T. Saito, eds.). Shoukadoh. Kyoto, Japan.

MINISTRY OF THE ENVIRONMENT OF JAPAN. 1985. Research report on environmental habitat and conservation of the Iriomote cat. Ministry of the Environment, Japan. Tokyo, Japan. In Japanese.

MINISTRY OF THE ENVIRONMENT AND NAGASAKI PREFECTURE. 1997. Research Report on Environmental Habitat of the Tsushima leopard cat. Ministry of the Environment. Japan, Tokyo. In Japanese.

NAKAMOTO, A., K. KINJO, AND M. IZAWA. 2007. Food habits of Orii’s flying-fox, Pteropus dasymallus inopinatus, in relation to food availability in an urban area of Okinawa-jima Island, the Ryukyu Archipelago, Japan. Acta Chiropterologica 9:237-249.

NAKAMOTO, A., A. SATO, K. KINJO, AND M. IZAWA. 2011. Population growth of Orii’s flying fox, Pteropus dasymallus inopinatus, on Okinawa-jima Island. Japanese Journal of Conservation Ecology 16:45–53. In Japanese with English summary.

NISHIMURA, Y., Y. GOTO, K. YONEDA, Y. ENDO, T. MIZUNO, M. HAMACHI, H. MARUYAMA, H. KINOSHITA, S. KOGA, M. KOMORI, S. FUSHUKU, K. USHINOHAMA, M. AKUZAWA, T. WATARI, A. HASEGAWA, AND T. TSUJIMOTO. 1999. Interspecies transmission of feline immunodeficiency virus from the domestic cat to the Tsushima cat (Felis bengalensis euptilura) in the wild. Journal of Virology 73:7916-7921.

OHDACHI S. D., Y. ISHIBASHI, M. A. IWASA, AND T. SAITOH. 2009. The Wild Mammals of Japan. Shoukadoh, Kyoto.

OKAMURA, M., M. TATARA, M. IZAWA, T. DOI, N. SAKAGUCHI, T. HEDONA, A. GUSHIKENN, AND Y. TAMASHIRO. 2003. To stop the traffic accidents of the Iriomote cat. Proceedings of the 2nd Workshop of “Wildlife and Traffic†Pp. 67-74.

SUGIMURA, K., AND F. YAMADA. 2004. Estimating population size of the Amami rabbit (Pentalagus furnessi) based on fecal pellet counts on Amami Islands, Japan. Acta Zoologica Sinica 50:519-526.

SUGITA, N., M. INABA, AND K. UEDA. 2009. Roosting pattern and reproductive cycle of Bonin flying foxes (Pteropus pselaphon). Journal of Mammalogy 90:195-202.

SUZUKI, H. 2008. Report of the animals on Kita-iwo-to. Pp. 91-94. Branch Office of Tokyo Metropolitan Government. Tokyo, Japan. In Japanese.

SUZUKI, H., AND M. INABA. 2010. Future of the flying guardian of forest and the islands. Iden, 64:61–67. In Japanese.

THE FORESTRY AGENCY OF JAPANESE GOVERNMENT. 2013. Annual report on forest and forestry in Japan.

THE NATURE CONSERVATION SOCIETY OF JAPAN. 2010. Ecological Review of Japanese Laws for Wildlife Conservation. Kohdansha. Tokyo, Japan. In Japanese.

UNIVERSITY OF THE RYUKYUS. 2008. Research Report on Environmental Habitat of the Iriomote cat. University of the Ryukyus. Okinawa, Japan. In Japanese.

UNO, H., M. YOKOYAMA, H. SAKATA, AND THE WORKING GROUP OF SIKA DEER MANAGEMENT IN MAMMAL SOCIETY OF JAPAN. 2007. Current status of and perspectives on conservation and management for sika deer populations in Japan. Honyurui Kagaku (Mammalian Science) 47:25-38. In Japanese.

WATANABE, S., N. NAKANISHI, AND M. IZAWA. 2003. Habitat and prey resource overlap between the Iriomote cat Prionailurus iriomotensisand introduced feral cat Felis catus based on assessment of scat content and distribution. Mammal Study 28:47-56.

WATARI, Y., S. NISHIJIMA, M. FUKASAWA, F. YAMADA, S. ABE, AND T. MIYASHITA. 2013. Evaluating the “recovery-level†of endangered species without prior information before alien invasion. Ecology and Evolution 3:4711–4721.

YAMADA, F., AND F. A. CERVANTES. 2005. Pentalagus furnessi. Mammalian Species 782:1-5.

YAMADA, F. 2008. A review of the biology and conservation of the Amami rabbit. Pp 369-377 in Lagomorph Biology, Ecology, and Conservation (Alves, P. C., N. Ferrand, and K. Hackländer, eds.). Springer. Berlin, Germany.

YAMADA, F. 2009. Pentalagus furnessi (Stone, 1900). Pp. 204-205 in The Wild Mammals of Japan. (Ohdachi, S. D., Y. Ishibashi, M. A. Iwasa, and T. Saito, eds.). Shoukadoh, Japan.

YAMADA, F., G. OGURA, AND S. ABE. 2009. Herpestes javanicus (É. Geoffroy Saint-Hilaire, 1818). Pp. 264-266 in The Wild Mammals of Japan. (Ohdachi, S. D., Y. Ishibashi, M. A. Iwasa, and T. Saito, eds.). Shoukadoh, Japan.

YAMAGUCHI, T., AND A. URATA. 1976. The Tsushima leopard cat. Pp.167-180 in Wildlife in Tsushima Islands (Biological Society of Nagasaki Prefecture ed.). Biological Society of Nagasaki Prefecture, Nagasaki. In Japanese.

YOSHIYUKI, M. 1 989. A systematic study of the Japanese Chiroptera. National Science Museum monographs 7:1-242.

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Published

2014-10-12

Issue

Vol. 6 No. 1 (2015)

Section

Special Contribution

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