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All Journal Jurnal Teknologi Lingkungan Universitas Trisakti Reaktor Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Ilmu Lingkungan Bionatura CIVED (Journal of Civil Engineering and Vocational Education) Jurnal Reka Lingkungan JURNAL TEKNOLOGI LINGKUNGAN Jurnal Teknik Pengairan: Journal of Water Resources Engineering Jurnal Dampak Indonesian Journal of Biotechnology Jurnal Penelitian Pendidikan IPA (JPPIPA) ALCHEMY Jurnal Penelitian Kimia Jukung (Jurnal Teknik Lingkungan) IJEMS (Indonesian Journal of Environmental Management and Sustainability) Jurnal Purifikasi Jurnal Serambi Engineering JURNAL REKAYASA Serambi Engineering Journal of Civil Engineering and Vocational Education
Puti Sri Komala
Departemen Teknik Lingkungan Universitas Andalas
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Physics Public Health Transportation

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Journal : Serambi Engineering

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The Impact of Rainfall Fluctuations on the Trophic of Maninjau Lake Based on the Carlson Index and The Comprehensive Index (CTSI) Arlina, Lia; Komala, Puti Sri; Silvia, Shinta
Jurnal Serambi Engineering Vol. 10 No. 4 (2025): Oktober 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Maninjau Lake is experiencing increased eutrophication levels, negatively impacting water quality and the balance of its aquatic ecosystems. One of the factors that is thought to play a role in accelerating the process is rainfall fluctuation, which affects nutrient input from the water catchment area. This study aims to analyze the effect of rainfall fluctuation on the trophic status of Maninjau Lake using the Carlson Trophic State Index (TSI) and Comprehensive Trophic State Index (CTSI) methods. Water sampling was conducted at 10 stations over three periods: September 2022, January 2023, and March 2023, which represented seasonal variations. The parameters measured included chlorophyll-a, total phosphorus (TP), total nitrogen (TN), chemical oxygen demand (COD), and Secchi depth according to national standards. Rainfall data were obtained from BMKG stations and correlated with trophic index values. Results showed TSI values ranged from 55–72 and CTSI between 60–75, indicating eutrophic to hypereutrophic conditions. The highest trophic status occurred in periods of high rainfall, with a strong positive correlation between rainfall intensity and nutrient increase (r = 0.999 for TSI; r = 0.989 for CTSI). Rainfall plays a role as the main hydrometeorological driver of trophic dynamics, so adaptive management is needed to mitigate the impact of eutrophication under climate variability.
Analisis Potensi Pemanfaatan Kualitas Air Hujan Untuk Penggunaan Non-potable Water di Kampus Universitas Andalas Ermaningsih; Nur, Ansiha; Komala, Puti Sri
Jurnal Serambi Engineering Vol. 11 No. 1 (2026): Januari 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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The high demand water for sanitation purposes in Engineering Faculty, Andalas University, particularly for toilet flushing systems, has not been balanced by utilization of sustainable alternative water sources. Therefore, this study aims to evaluate feasibility of rainwater quality as non-potable water source planned for implementation in the buildings of Engineering Faculty, Andalas University. The feasibility assessment refers to Regulation of Health Minister of Republic of Indonesia Number 2 of 2023. Rainwater samples collected directly from building roof downpipes, with three repetitions at the same location. The parameters of pH, dissolved oxygen (DO), and temperature were measured in situ using Lutron DO-5510 dissolved oxygen meter and portable pH meter, while turbidity, BOD, COD, TSS, and total coliform were analyzed at Environmental Engineering Department Laboratory of Andalas University using standard methods based on SNI 6989.57:2008 and US EPA Method 1699. The results indicate that pH, DO, temperature, BOD, COD, TSS, and turbidity comply with the established quality standards, whereas total coliform levels exceed the permissible limit. The presence of total coliform is presumably due to contamination from bird droppings on roof surfaces, particularly in areas surrounded by vegetation.
Co-Authors AA Sudharmawan, AA Adetya, Ashifa Agus Jatnika Effendi Ananthi, Naraina Arief Almi Arionanda, Fauzia Arlina, Lia Ashifa Adetya Aufa Aniq Rumzi Denny Helard Dewi Fitria Dewi Nilawati Dewi, Nadia Tripermata Dewi, Purnama Mentari Diana Rahayuning Wulan Dura Vendela Ermaningsih Fadjar Goembira Fenisa Fauziyah Marshal Fitra Ramadhani Fitria, Irna Rosa Ida Ayu Putu Sri Widnyani Iing Surya Marlis Juwita Zurienra Leni Leni M Zulfan Mardatillah, Regina Mas Mera Nabila, Alya Sausan Nadia Tripermata Dewi Nasution, Farida Hannum Nelda Murti - Neni Sintawardani Nicolaus Nezha Nunez Mahasti Nino Perdana Putra Nur, Ansiha Nur, Ansiha Nurwijayanti Primasari, Budhi Purnama Mentari Dewi Purnama Mentari Dewi Putra, Randi Permana Putri, Widia Rati Yuliar Ningsih Regia, Rinda Andhita Ridwan Ridwan, Ridwan Rinanda, Bismi Lyra Rizki Aziz Roselyn Indah Kurniati Salmariza Sy - Shinta Indah Silvia, Shinta Slamet Raharjo Suarni S Abuzar Suarni S. Abuzar Suarni Saidi Abuzar Suarni Saidi Abuzar Suci Handayani, Suci Suci Wulandari Syukur, Adyana Tivany Edwin Tomi Wirawan Tomi Wirawan Uttiya Annisa D Wahyu Tanaka Wenten, IG. Widyarani Widyarani Wisjnuprapto, Wisjnuprapto Yenni Ruslinda Yommi Dewilda Yuda Maisuara Zikra Zikra Zilvia Wulandari Zilvia Wulandari Zulkarnaini Zulkarnaini Zulkarnaini Zulkarnaini