Study of Odonata Diversity in Kerangas Forest Sukadamai Village and Punai Beach Simpang Pesak, Belitung Timur

Belitung is known as the biggest tin mining in Indonesia. Besides that, Belitung also has a lot of biological resources, that is Odonata (dragonfly). The research was conducted in June 2018 by exploration in Belitung, particularly in Punai beach and Kerangas forest (ex-tin mining) area. There is found 17 type of dragonfly such as Ichtinogomphus decoratus., Macrogomphus sp., Orthetrum sabina., Nannophya pygmaea., Neurothemis fluctuans., Rhodothemis rufa., Rhyothemis phyllis., Urothnemis signata., Pseudagrion coomansi., Ceriagrion cerinorubellum., Acisoma panorpoides., Brachydiplax chalybea., Diplacodes nebulosa., Orthetrum pruinosum., Agriocnemis femina., Agriocnemis pygmaea., and Ischnura senegalensis. All species were conducted to find out the diversity using Shannon-Wiener index and resulting 2,77 index.

Komposisi Spesies Capung (Odonata) di Kawasan Cagar Alam Mandor Kecamatan Mandor Kabupaten Landak Kalimantan Barat

Dragonfly is one of the predatory insect that can be used as an environmental bio-indicator. Mandor Nature Reserve forest area, which has 3.080 Ha, had changed due to illegal logging and illegal gold mining (PETI) giving a sustainable impact on its flora and fauna. This research aim was to determine the species of dragonfly found in the Mandor Nature Reserve area. The sampling was conducted in one month with the Purposive Random Sampling method. Adult species were collected fortnightly by using sweep nets. There were 182 individuals belonged to 2 suborders, 3 families, 11 genera, and 12 species of dragonflies found in Mandor Nature Reserve area. Two suborders are Zygoptera and Anisoptera, the three families are Coenagrionidae, Gomphidae and Liebellulidae. The most common species found of dragonflies is Cerinorubellum ceriagrion (33 individuals or 18%) and Nannophya pygmaea (29 individuals or 16%), Orthetrum sabina (23 individuals or 13%) and the least common dragonfly is Periagrion microcephallum (4 individuals or 2.16%).

DRAGONFLIES INVENTORY (Odonata) IN KOTA WARINGIN VILLAGE, PUDING BESAR DISTRICT – BANGKA ISLAND

Odonata is considered an environmental indicator group of freshwater habitats. Thus there is a need to have a good baseline data to use it for monitoring fluvial habitats. However, species composition of Odonata in Kota Waringin Village is poorly known.This study aims to determine the diversity of dragonfly species in the Kota Waringin Village, Puding Besar District – Bangka Island. Data were collected at Three different ecosystems in Kota Waringin Village area (River in Forest, River in oil palm plantations and yard). Location for data collection based on the availability of water resources using purposive sampling method. The species were identified using identification books (Dragonfly of Singapore and Australian Dragonfly). Based on research we revealed 13 species of dragonflies are exist in three sampling locations (Agrionoptera insignis, Brachydiplax chalybea, Heliaeschna crassa, Ictinogomphus decoratus melaenops, Nannophya pygmaea, Neurothemis fluctuans, Neurothemis ramburii, Neurothemis terminata, Orthetrum chrysis, Orthetrum Sabina, Rhodothemis rufa, Zyxomma petiolatum and Rhyothemis phyllis). Keywords : Odonata, Dragonflies, Inventory, Conservation, Bangka Island