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All Journal Bioscientist : Jurnal Ilmiah Biologi Inornatus: Biology Education Journal Equator Science Journal (ESJ) Journal of Biology Science and Education
Bialangi, Mursito S.
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Education Environmental Science Immunology & microbiology Physics Social Sciences Other

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Hydrilla verticillata Density as a Bioindicator of Pollution in the Waters of Lake Talaga, Dampelas District Khasanah, Azizatul; Astija; Buntu, Amalia; Febriawan, Aan; Bialangi, Mursito S.; Febriani, Vita Indri
Bioscientist : Jurnal Ilmiah Biologi Vol. 14 No. 1 (2026): March
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v14i1.19908

Abstract

This study aimed to determine the density of Hydrilla verticillata in Lake Talaga and to evaluate its potential as a bioindicator of changes in water quality caused by domestic pollution. The study was conducted at three stations, where physicochemical parameters were measured, including temperature, pH, light intensity, turbidity, dissolved oxygen, and the heavy metals Pb, Fe, and Cu. The results showed that water temperature ranged from 26 to 28°C and dissolved oxygen from 8.04 to 8.49 mg/L, indicating conditions that still support aquatic life. Heavy metal concentrations were below the established water quality standards. However, the pH was categorized as highly alkaline, and the highest turbidity was recorded at the station located near residential areas, suggesting environmental pressure associated with domestic activities. The density of Hydrilla verticillata varied among stations, reaching 607,333.3 ind/ha at Station II (high category), 180,000 ind/ha at Station I (moderate category), and 6,066 ind/ha at Station III (low category). The high density observed in the residential area indicates nutrient enrichment that may stimulate excessive growth of aquatic vegetation. This condition suggests symptoms of eutrophication and indicates that Lake Talaga is experiencing localized light to moderate pollution. Therefore, the density of Hydrilla verticillata has strong potential to be used as a bioindicator for assessing changes in water quality.
Co-Authors Abd Rauf Abd. Rauf Achmad Ramadhan Adianingsih, Adianingsih Amalia Buntu Amiruddin Kasim Amran Rede Arief, Abdul Artinya, Indri A. Ashari, Abdul Asrina, Nur Astija Avita, Cindy Dea Bustamin Dewi Tureni Febriani, Vita Indri Febriawan, Aan Fetmi, Fetmi Halmayana, Halmayana Hayyatun Mawaddah Hiska, Hiska humaira I Made Budiarsa I Nengah Kundera Jannah, Uraefatul Karima, Nur Khasanah, Azizatul Kusriati, Ni Wayan Landewang, Laora Cecilia Lestari M.P Alibasyah Lilies Lilies Lilies Lumbantobing, Stevany Romaito Mardiana, Indhira Masauda, Cici Magfira Aj. Mohamad Jamhari Mohammad Jamhari Nuraeny, Nuraeny Potutu, Harmani Putri, Riska Ananta Rafiqa RAFIQA RAFIQA, RAFIQA Rafiqah Rafiqah, Rafiqah Rahmadani, Nurlaila Wulan Raya Agni Ritman Ishak Paudi Rorimpandey, Jerikson Sabran , Moh. Shamdas, Gamar B.N Shamdas, Gamar B.N. Shamdas, Hj. Gamar B.N Syech Zainal Windarsih, Yulia