Population density and group composition of Japanese sika deer (Cervus nippon yakushimae) in an evergreen broad-leaved forest in Yakushima, southern Japan
Tóm tắt
The population density of Japanese sika deer (Cervus nippon yakushimae Kuroda and Okada) in an evergreen broad-leaved forest in Yakushima, southern Japan, was surveyed over 4 years from 1998 to 2001. Two approximately 50 ha study sites, Hanyama and Kawahara, were established with a total of 4 km of census trails at each site. The estimated densities of sika deer at the two sites were 43–70 deer km−2 at Hanyama and 63–78 deer km−2 at Kawahara, although these values might be underestimates. The adult sex ratio (number of adult males : number of adult females) ranged from 0.6 to 1.0 at Hanyama, and from 0.4 to 0.9 at Kawahara. Mean group size was 1.9 deer (male group, 1.5 deer; female group, 1.6 deer; mixed group, 3.6 deer). The population density of sika deer was relatively high compared to other sites in Japan, with the exception of very small (<10 km2) islands. Possible explanations for this naturally high density of sika deer in an evergreen broad-leaved forest in Yakushima are discussed.
Tài liệu tham khảo
Agetsuma N. (1995) Dietary selection by Yakushima macaques (Macaca fuscata yakui): The influence of food availability and temperature. International Journal of Primatology 16: 611–627.
Agetsuma N. (1996) Wildlife and nature conservation in Yakushima Island, Japan. Wildlife Forum 2: 23–32 (in Japanese).
Agetsuma N. (1998) Crop damage by wild Japanese monkeys on Yakushima Island, Japan. Japanese Journal of Conservation Ecology 3: 43–55 (in Japanese with English summary).
Agetsuma N., Sugiura H. & Tanaka T. (1994) Influence of Seibu Road on the World Heritage Forest of Yakushima Island, Japan. Primate Research 10: 41–47 (in Japanese with English summary).
Bookhout T. A. (1994) Research and Management Techniques for Wildlife and Habitats. Allen Press, Kansas.
Darling F. F. (1937) A Herd of Red Deer. Oxford University Press, Oxford.
Endo A., Doi T., Izawa M., Yabe T. & Tsuji T. (1999) Improved deer box trap ‘EN-Trap’. Mammalian Science 40: 145–153 (in Japanese with English summary).
Environment Agency (1984) Yakushima No Sizen. The Nature Conservation Society of Japan, Tokyo (in Japanese with English summary).
Environment Agency (1985) Shinrinkankyou no hennka to oogatayaseidoubutu no seisokudoutai ni kansuru kisoteki kennkyuu houkoku. Environment Agency, Tokyo (in Japanese).
Hamasaki S. (1998) Sika deer management in Hyogo Prefecture. Mammalian Science 38: 332–333 (in Japanese).
Hill D. A. & Agetsuma N. (1995) The Yakushima Wildlife Conservation Project: Assessing the influence of habitat disturbance on the ecology of macaques and deer. Folia Primatologica 64: 102.
Hill D. A. & Maruhashi T. (1996/1997) Conservation of Japanese macaques in Yakushima: the effectiveness of UNESCO’s Natural World Heritage designation. Primate Conservation 17: 160–163.
Izawa K., Kasuya T. & Kawamichi T. (1996) The Encyclopaedia of Animals in Japan. Vol. 2: Mammal II. Heibonsha, Tokyo (in Japanese).
Kagoshimaken Sizenaigo Kyokai (1981) Yakusika no seisoku/bunnpu nikannsuru kinkyu chousa houkokusho. Kagoshimaken Sizenaigo Kyokai Chousahoukoku 5: 1–34 (in Japanese).
Kagoshimaken Sizenaigo Kyokai (1994) ‘Kendo Kamiyaku-Nagata-Yakusen Kairyoukeikaku Nitomonau Kankyoeikyo Monitoring’ Houkokusho. Kagoshimaken Sizenaigo Kyokai, Kagoshima (in Japanese).
Kaji K. (1981) Preliminary study of deer management with reference to wintering area and population density in the Shiretoko Peninsula. In: Report of the Survey of Vertebrate Communities in Shiretoko Peninsula, Hokkaido, Japan (ed. Hokkaido Government) pp. 145–164. Hokkaido Government, Sapporo (in Japanese with English summary).
Kaji K. (2001) Study on Conservation and Management of Sika Deer in Hokkaido 1996–2000. Hokkaido Institute of Environmental Sciences, Sapporo (in Japanese).
Kaji K., Yajima T. & Igarashi T. (1991) Forage selection by sika deer introduced on Nakanoshima Island and its effect in the forest vegetation. In: Proceedings of the International Symposium on Wildlife Conservation, pp. 52–55. The V International Congress of Ecology, Tsukuba and Yokohama (unpubl.).
Kaji K., Yokoyama M. & Takahashi M. (1998) Winter mortality pattern of sika deer (Cervus nippon yesoensis) in Akan National Park, Hokkaido. Mammalian Science 38: 233–246 (in Japanese with English summary).
Koganezawa M. (1998) Sika deer management in Tochigi Prefecture. Mammalian Science 38: 317–323 (in Japanese).
Maruhashi T. (1980) Feeding behavior and diet of the Japanese monkeys (Macaca fuscata yakui) on Yakushima Island, Japan. Primates 21: 141–160.
Maruhashi T., Saito C. & Agestuma N. (1998) Home range structure and inter-group competition for land of Japanese macaques in evergreen and deciduous forests. Primates 39: 291–301.
Matsuda H., Kaji K., Uno H., Hirakawa H. & Saitoh T. (1999) A management policy for sika deer based on sex-specific hunting. Research of Population Ecology 41: 139–149.
Ochiai K. & Asada M. (1995) Growth in the body size of sika deer (Cervus nippon) on the Boso Peninsula, central Japan. Journal of Natural History Museum and Institute, Chiba 3: 223–232 (in Japanese with English summary).
Ohtaishi N. (1978) Age variation of antlers and body size in sika deer. II. Congress Theriologicus Internationalis; 20–27 June 1978, Brno, Czech Republic, Abstracts of Papers, p. 20.
Okada H., Kaji K., Yamanaka M. & Takahashi H. (1997) Distribution of sika deer (Cervus nippon yesoensis) in the Mt. Onnebetsu wilderness area and its adjacent region. In: Long Term Ecological Studies in the On’nebetu-Dake Wilderness Area and its Surrounding Areas-1997 Reports (ed. Nature Conservation Society of Japan), pp. 159–175. Nature Conservation Society of Japan, Tokyo (in Japanese).
Sasaki H. (1998) Sika deer management at Goyozan area, Iwate Prefecture. Mammalian Science 38: 314–316 (in Japanese).
Suzuki M., Onuma M. & Yokoyama M., Kaji K., Yamanaka M. & Ohtaishi N. (2001) Size, sexual dimorphism and seasonal weight fluctuations in a larger sika deer subspecies, Hokkaido sika deer (Cervus nippon yesoensis Heude, 1884). Canadian Journal of Zoology 79: 154–159.
Tagawa H. (1980) Vegetation on the western slope of Mt. Kuniwaridake, Yakushima Island. Science Reports of Kagoshima University 29: 121–137 (in Japanese).
Takatsuki S. (1983) Group size of sika deer in relation to habitat type on Kinkazan Island. Japanese Journal of Ecology 33: 419–425.
Takatsuki S. (1990) Summer dietary composition of sika deer on Yakushima Island, southern Japan. Ecological Research 5: 253–260.
Takatsuki S. (1992) Sika Deer Living in the North. Dobutsusha Publishers, Tokyo (in Japanese).
Takatsuki S. & Gorai T. (1994) Effects of sika deer on the regeneration of Fagus crenata forest on Kinkazan Island, northern Japan. Ecological Research 9: 115–120.
Takatsuki S., Miura S., Suzuki K. & Ito K. (1991) Age structure of mass mortality in the sika deer (Cervus nippon) population on Kinkazan Island, northern Japan. Journal of Mammalogical Society of Japan 15: 91–98.
Tokida K., Kitaura K. & Suda K. (1998) Sika deer management in Tsushima Island, Nagasaki Prefecture. Mammalian Science 38: 334–339 (in Japanese).