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All Journal Jurnal Biologi Tropis Indonesian Journal of Applied Research (IJAR)
Emilianus Pani
Widya Mandira Catholic University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Immunology & microbiology

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The Study of Dragonfly (Odonata) Diversity as Bioindicator of Water Quality in Science Techno Park Spring-Beleknehe Village Chatarina Gradict Semiun; Yulita Iryani Mamulak; Emilianus Pani; Stefanus Stanis
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i1.4477

Abstract

Dragonflies are bioindicator insects for the quality of the aquatic environment, especially springs. This study aims to determine the types of dragonflies that live in the Science Techno Park (STP) spring, Beleknehe village, Nekemese sub-district, Kupang District. STP is owned by Widya Mandiri Catholic University. This research was conducted in September 2022. Data collection consisted of dragonfly samples and abiotic factors. Dragonfly samples were obtained using insect nets and hand sorting, while abiotic factor measurements included physical (TDS, DHL) and chemical (hardness, iron, sulfate, Mn, NO3, NO2) parameters. The results of the study revealed that there were four types of dragonflies namely Neurothemis stigmatizans, Coenagrion lunulatum, Megalagrion sp., and Orthetrum pruinosum. The four dragonflies found showed that the quality of the Science Techno Park spring was still in good condition.
Riparian Trees and Its Roles to Water Quality in Niukbaun Springs Chatarina Gradict Semiun; Yulita Iryani Mamulak; Emilianus Pani; Stefanus Stanis
Indonesian Journal of Applied Research (IJAR) Vol. 4 No. 2 (2023): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v4i2.307

Abstract

Riparian trees play an essential role in maintaining the quality of the springs. This research was conducted to determine riparian tree types and water quality in Niukbaun Springs, Kupang district. Tree samples were measured by using the Quadrat Sampling Technique. Meanwhile, water quality measurement included physical, chemical, and microbiological parameters. All data collected were analyzed to determine the Shannon-Wiener diversity index, tree endemism status, and gap analysis (conformance of water quality profiles with water quality standards). The results revealed that there were 11 families consisting of Anacardiaceae, Arecaceae, Bombacaceae, Dendrocnide, Elaeocarpaceae, Euphorbiaceae, Meliaceae, Moraceae, Oxalidaceae, Sapindaceae, and Verbenaceae with a total of 149 individuals. The endemism status of the 15 tree species found was 80% classified as endemic and 20% classified as exotic. From the results of the physical and chemical quality tests of water, it was found that almost all parameters met the water quality standards, except for nickel (dissolved metal), which did not meet the water quality standards. Microbiological test results revealed a type of bacteria with similar characteristics to the bacteria Proteus mirabilis, Klebsiella aerogenes, and E. coli. Human activities impact the diversity of riparian trees and the quality of water in Niukbaun Springs.
Co-Authors Chatarina Gradict Semiun Stefanus Stanis Stefanus Stanis Yulita Iryani Mamulak Yulita Iryani Mamulak