| 要旨トップ | 本企画の概要 | 日本生態学会第69回全国大会 (2022年3月、福岡) 講演要旨
ESJ69 Abstract


シンポジウム S25-6  (Presentation in Symposium)

Persistence of wildlife communities in degraded logged-over forests and its implication for sustainable forestry in East Kalimantan

*Agus JATI(The Univ. of Maine), Hiromitsu SAMEJIMA(IGES)

The suitability of logged forests as wildlife habitats is being argued. We examined the responses of high-conservation-value terrestrial wildlife to logging intensity in three natural production forests in East Kalimantan, Indonesia. Twenty-nine camera trap plots were distributed in the concession forests between 2012-2016. Each plot consisted of 10 camera units distributed randomly within a 500m radius to record wildlife for one to two years. We identified 24 wildlife species listed as endemic to Borneo, protected by national regulation, and/ or threatened by extinction. We estimated each species' detection and occupancy probability to examine their responses to the following variables: silviculture practices (reduced impact logging vs. conventional logging), forest intactness, and above-ground carbon. The detection probability of 18 species was significantly influenced by the number of camera traps active in each plot. Ten species showed higher occupancy probability in the forest managed with reduced impact logging, while 11 species have higher occupancy in response to higher forest intactness or above-ground carbon. The 95% confidence intervals of occupancy probability among study sites were overlapped for most species, indicating a high persistence of wildlife in logged-over forests. This emphasizes the importance of biodiversity conservation in natural forests managed for timber production.


日本生態学会