PS 25-72
Characteristics of small rodent populations in a natural deciduous forest and a Japanese larch plantation
Forest floor-dwelling small rodents provide a measure of forest ecosystem function. These mammals fulfill numerous ecological roles, such as serving as prey for predators, consuming flora and fauna, and distribution of fungi. Most of the forested areas in South Korea are young-growth stands (< 50 years old), including natural deciduous forests and coniferous plantations. We examined the richness and abundance of small rodents inhabiting different temperate forest types in South Korea. The study was conducted in order to obtain quantitative information about habitat variables and small rodent populations in a natural deciduous forest and a Japanese larch plantation for the purpose of forest conservation.
Results/Conclusions
Foliage profiles of understory (1-2 m), mid-story (2-8 m), and overstory (20-30 m) vegetation coverage were higher in the Japanese larch plantation than in the natural deciduous forest. The distribution of diameter at breast height of trees and species richness of small rodents did not differ between study areas. The number, age structure, and sex ratio of captured individuals varied between months. Microhabitat variables tend to be important for small rodents at the level of population. Microhabitat characteristics determine the patterns of habitat use by small rodents within their home ranges. An understanding of habitat characteristics and small rodent population dynamics is essential for forest management. For conservation of small rodent populations and their habitat, long-term ecological studies are needed.