Community Structure of Dragonflies (Odonata) at Garahan Resort, Sempolan, Perhutani, Forest Management Unit (KPH) Jember

Abstract

A community is a conglomeration of diverse groups coexisting within a shared geographical location and temporal framework. Different approaches can be used to explain community structure, focusing on species diversity, species interactions, and functional organization. The biodiversity of dragonflies in Indonesia is significantly abundant. Dragonflies play multiple ecological roles and inhabit diverse habitats, as evidenced by recent research conducted in January 2023. This study aimed to investigate the composition and organization of the dragonfly community. The research design employed in this study is exploratory and descriptive. The identification of station sites through the purposive sampling method. The sampling locations consisted of a pine forest and the Garahan jungle. The road sampling approach utilizes the sweeping technique. The investigation yielded a total of thirteen distinct species of dragonflies. The study reveals the presence of two endemic species, Paragomphus reinwardtii and Heliocypha fenestrata, with a diversity index value (H’) of 1.653, falling into the medium group. The dominance index (D) exhibits a value of 0.263, indicating its classification within the low group. The evenness index (E) value at 0.401 falls into the medium group. A species similarity index (SI) of 75% is categorized as high. Canonical Corresponding Analysis (CCA) reveals a positive correlation between the species Ortherum Sabina, Orthetrum glaucum, Vestalis luctuosa, Diplacodes trivialis, Euphaea variegata, Coeliccia membranipes, Gynacantha subinterrupta, Paragomphus reinwardtii, and Zygonix ida with light intensity, air humidity, and wind speed.