Diversity Insects of Spring in Mutis Timau Nature Reserve, TTS District, NTT Province

Chatarina Gradict Semiun,Gaudensius U U Boli Duhan

doi:10.29303/jbt.v21i3.2942

Chatarina Gradict Semiun, Gaudensius U U Boli Duhan

Open Access

https://doi.org/10.29303/jbt.v21i3.2942

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Abstract

Insect diversity is believed to be used as a bio-indicator of spring quality, this study aimed at determining the spring insect diversity around the Mutis Timau Nature Reserve. The study was conducted from June to August 2019. Insects were caught by using the yellow pan trap and hand sorting. The diversity of spring insects was determined based on the Shannon-Wiener diversity index (H'), species richness index (R1), species dominance index (D), and evenness index (E). The results showed that 16 species belong to 11 families, and five orders of insects. The families included Gryllidae, Gryllotalpidae, Tetrigidae, Formicidae, Pompilidae, Apidae, Ochteridae, Veliidae, Hydrometridae, Nepidae, Coenagrionidae, Libellulidae, Carabidae, and Coccinellidae. The Shannon-Wiener species diversity index and the wealth index of the species of springs were classified as moderate (H '= 2.12 and R1 = 4.19). There was no type of spring insects dominated (D = 0.23). All springs insects were found to have almost the same level of evenness (E<1), with a value of 0.76. Abiotic factors such as pH and soil temperature were within the tolerance range of spring insects.ÃÂ ÃÂ

Highlights

The Mutis Timau Nature Reserve (MTNR) is part of the Timau Mutis forest group
Aquatic insects are a group of arthropods whose life cycle is part of the water
Location The research was conducted in springs located in Tunua and Fatumnasi villages around TMNR (Picture 1)

Summary

Introduction

The Mutis Timau Nature Reserve (MTNR) is part of the Timau Mutis forest group. This forest area is precisely located in Fatumnasi and Tobu Districts in TTS; Miomaffo Barat and Mutis TTU Districts (http://bbksdantt.menlhk.go.id). Almost all natural, modified, and terrestrial, and aquatic ecosystems support insect communities, including the aquatic insects around the MTNR area. Aquatic insects are a group of arthropods whose life cycle is part of the water. These insects play an essential-essential role in the food chain in an aquatic ecosystem. Insects play a role in the nutrient cycle and are an essential component of the food chain in the water (Hasan et al, 2016). Aquatic insects are found in almost all types of aquatic habitats such as lakes, fast river flows, very salty swimming pools, phytotelmata, coastal waters, and river estuaries, acid peat swamps, groundwater, hot springs, and even pools of crude oil seeping from the ground, and in springs (Mohd et al, 2012)

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