Power line corridors in conifer plantations as important habitat for butterflies.
Kazuhito Oki, Masashi Soga, Tatsuya Amano, Shinsuke Koike
There is growing concern over the loss of grassland and forest species worldwide due to land use changes. In Japan, young forest plantations provide important habitats for grassland species. However, the decline in forest logging frequency has led to a decrease in the area of young plantations, which may in turn cause a decline in the number of grassland species. Power line corridors in forest plantations can act as habitats for early and late successional species, as they contain vegetation in diverse stages. This study evaluated the importance of these corridor zones as habitats for early and late successional butterflies in Japan. The species richness and abundance of butterflies were recorded in power line corridors, young plantations, forest roads, and mature plantations. Vegetation height and food resource availability for larvae and adult butterflies were also measured. The species richness and abundance of those of late successional butterflies were highest in power line corridors and young plantations, and lowest in mature plantations; and early successional butterflies and food resource availability were highest in power line corridors, and lowest in mature plantations. The species richness and abundance of butterflies within power line corridors were largely explained by vegetation height and food resource availability. Our results indicate that power line corridors within conifer plantations provide important habitats for early and late successional butterflies.
- : Journal of Insect Conservation
- : https://link.springer.com/article/10.1007/s10841-021-00343-6