Dataset for effect of elevation on the insect herbivory of Mongolian oaks in the high mountains of southern South Korea

The data presented in this article are related to the research article “Effect of elevation on the insect herbivory of Mongolian oaks in the high mountains of southern South Korea” (Sohn et al., 2019). We collected oak leaves occurring in two mountains: Jirisan Mountain on the mainland of Korea (12 September 2015) and Hallasan Mountain on Jejudo Island (21 September 2015). From three randomly-chosen trees, we sampled six branches with breast height with all leaves attached. Feeding traces associated with feeding activities of insects and mites on the leaves were recorded. The underlying data of that research article are presented here: Feeding damage type per surveyed leaf at four research sites of southern South Korea; the geographic location of the study sites on each mountain and the abbreviation of the feeding types and guilds.