The Natural Environmental Science Research
Online ISSN : 1883-1982
Print ISSN : 0916-7595
Population aspect of Cervus nippon at Ashio Mts., Tochigi Prefecture, Japan: Effect of heavy snow on the population
Koji YAMAZAKI
Author information
JOURNAL OPEN ACCESS

1993 Volume 6 Pages 65-80

Details
Abstract
It is well known that the number of individuals of the Cervus species sometimes extends beyond a reasonable population size based on the environmental conditions. Then, they resulted in a mass die-off for the adjustment of population size under severe circumstances. The present work was mainly conducted to demonstrate the population dynamics of Cervus nippon located at the Ashio mountains, Tochigi Pref., under a heavy snow condition during the winter of 1984. As a result, several types of unusual movements were observed in the population. With the snow, the habitable environment was limited into a more narrow range of space. At a highest extreme, the population reached 121.8 individuals per square kilometer. Corpses were discovered first in the middle of March, reaching at a highest rate of about 36% in the end of this month. Most of the individuals to die were yealings first, followed by adolescents, and male and female adults.
Content from these authors
© 1993 The Hiraoka Environmental Science Laboratory

この記事はクリエイティブ・コモンズ [表示 - 非営利 - 改変禁止 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.ja
Previous article Next article
feedback
Top