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Ngurah Intan Wiratmini
PS Biologi FMIPA UNUD
Biochemistry, Genetics & Molecular Biology

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KUALITAS AIR BENDUNGAN SUNGAI BADUNG DAN KOLAM PANCING “X” Dewa Ayu Wahyunia Ratna Dewi; Deny Suhernawan Yusup; Ngurah Intan Wiratmini
SIMBIOSIS Simbiosis Volume 13 No. 1 2025
Publisher : Program Studi Biologi Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JSIMBIOSIS.2025.v13.i01.p12

Abstract

The water quality in the northern coastal area of ​​Serangan Island, Denpasar, which receives flow from many large (Tukad) and small (loloan) rivers is indicated to have experienced organic and inorganic pollution including heavy metals. The Badung River Dam and fishing pond "X" located around the northern coastal area of ​​Serangan Island are widely used by the community for fishing activities, so it is necessary to know the quality of the water. The purpose of this study was to determine the water quality of the Badung River dam and the fishing pond "X". The water quality of the Badung River dam has exceeded the threshold of the National Class II water quality standard, DO (1.51 mg/L), pH (5.79), BOD (110.88 mg/L), lead (Pb: 0.24 mg/L) and copper (Cu: 0.29 mg/L) and cadmium (Cd: 0.05 mg/)L. except for water temperature (28oC). Several water quality parameters of the fishing pond “X” have also exceeded the threshold, namely BOD (25.20 mg/L), lead (Pb: 0.05 mg/L), copper (Cu: 0.07 mg/L) and cadmium (Cd: 0.20 mg/L), while the DO parameters (4.33 mg/L), pH (6.26) and water temperature (28.1oC) are still within the threshold range of water quality standards. In general, the water quality of the fishing pond “X” is better than that of the Badung River dam, but monitoring of the heavy metal content (Cd, Pb and Cd) in both waters is needed, which has exceeded the water quality standard class II. Keywords: Ponds, Water quality, Dam Resevoir, Heavy metals, Pollution
KARAKTERISASI DAN ANALISIS POLA PERTUMBUHAN IKAN KEMBUNG (Rastrelliger sp.) YANG DIDARATKAN DI TEMPAT PELELANGAN IKAN KEDONGANAN, BALI: CHARACTERIZATION AND GROWTH PATTERN ANALYSIS OF IKAN KEMBUNG (Rastrelliger sp.) LANDED AT KEDONGANAN FISH AUCTION SITE, BALI Revael Sihombing; Ni Made Suartini; Ngurah Intan Wiratmini
SIMBIOSIS Simbiosis Volume 13 No. 2 2025
Publisher : Program Studi Biologi Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JSIMBIOSIS.2025.v13.i02.p04

Abstract

ABSTRACT One of Bali's largest fish potential areas is Kedonganan, a coastal region where the majority of residents are fishermen. Kedonganan waters represent a highly promising fish landing site due to its direct proximity to the Indian Ocean. Based on preliminary surveys and interviews with local fishermen, the dominant small pelagic fish species frequently landed in large quantities at the Kedonganan Fish Auction (TPI) are mackerel fish (Rastrelliger sp.). This study aims to investigate the morphology, morphometrics, and growth patterns of these species landed at TPI Kedonganan. This research employed survey and interview methods. The variables examined include fish morphology, fish morphometrics consisting of 15 characters, and the growth patterns of mackerel fish (Rastrelliger sp.). The findings reveal that mackerel fish (Rastrelliger sp.) exhibit a fusiform body shape, terminal mouth, forked caudal fin, and cycloid scales. Morphometric measurements showed an average total length of 217.8 cm. The growth pattern of mackerel fish includes negative allometric (b<3).
Co-Authors Deny Suhernawan Yusup Dewa Ayu Wahyunia Ratna Dewi Ni Made Suartini Revael Sihombing