The Korean Journal of Ecology

The Ecological Society of Korea (한국생태학회)
권호 표지

Relationships between Small Mammal Community and Coarse Woody Debris in Forest Ecosystem

산림 생태계에서 소척추동물 군집과 잔목의 관계

  • Lee, Sang-Don (National Instrumentation Center of Environmental Management, College of Agriculture and Life Sciences, Seoul National University)
  • 이상돈 (서울대학교 농업생명과학대학 농업과학공동기기센터)
  • Published : 1997.08.01
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Abstract

Few attempts have been made to discover the ecological function of coarse woody debris (CWD) despite its importance to small mammal population. Twenty-five pitfall traps and a hundred live traps were placed in three sites with high amounts of CWD and three sites with low amounts of CWD. Eleven species were caught, and Peromyscus maniculatus was the most abundant (45.6%, n=605). Among 11 speices, abundance of Tamias townsendii and Clethronomys gapperi were higher in sites with high amounts of CWD than in sites with low amounts of CWD. Home range size was larger in breeding season than in non-breeding season indicating mating search. Resident time of Peromyscus maniculatus was longer in sites with high amounts of CWD implying better stability in population. The increasing amount of coarse woody debris (CWD) enhanced the habitat use by small mammals, and animals in high amounts of CWD were more abundant and stable in population fluctuation. This study, therefore, concludes that CWD is a critical habitat element for small mammals in forest ecosystem.

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