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Application of eDNA Technology to Assess Phytoplankton Diversity in the Ciliwung Downstream Area, Jakarta, Indonesia Permatasari, Prita Ayu; Aprilia, Mita; Effendi, Hefni; Zainalarifin, Jauhar
Media Konservasi Vol. 30 No. 1 (2025): Media Konservasi Vol 30 No 1 January 2025
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/medkon.30.1.53

Abstract

Rivers have the potential for enormous flows of water, nutrients, and food that can create habitats for various living creatures. However, the flow of pollutants into estuaries and coastal areas can degrade environmental conditions in downstream areas of the river. Numerous studies have highlighted the loss of aquatic species due to increased stressors and pollutants in heavily contaminated rivers. This manuscript aims to analyze the phytoplankton diversity in three stations (natural riparian, concreted riparian, and estuary) of the Ciliwung River in Jakarta. Using environmental DNA (eDNA), we identified and compared the number of phytoplankton families and read sequences with various water quality parameters. The results showed that each station consists of 16, 13, and 20 families with 11,257; 75,963; and 37,339 read sequences, respectively. The study showed that phytoplankton family diversity in Stations 1 and 2 correlates with water pollution levels (lightly to extremely polluted). In contrast, Station 3 exhibited an unusual pattern, with high family diversity despite declining water quality.
Water Quality Status of the SDGs Lake of IPB Campus, Dramaga, Bogor, West Java: Status Mutu Kualitas Air Danau SDGs-Kampus IPB Dramaga, Bogor, Jawa Barat Admiral Farouk Sabzevar, Andi; Lolon, Meitin; Sari Andhika, Laila; Annisa Rusli, Andi; Khasanah, Siti; Zainalarifin, Jauhar
Habitus Aquatica Vol 6 No 2 (2025): Habitus Aquatica : Journal of Aquatic Resources and Fisheries Management
Publisher : Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/HAJ.6.2.68

Abstract

Lakes are aquatic ecosystems surrounded by land. Lakes have many uses, namely as habitats for aquatic biota and for tourism, mitigation, and education. Human activities around Lake SDGs IPB Dramaga have a negative impact on the lake environment. This study aims to compare the water quality status of SDGs lakes with CCME and the Pollution Index. The research used two time periods, namely October 2024 and March 2024, with three station points. The research results show that four parameters do not meet quality standards, with more parameters occurring in October 2023. Water quality status measurement using the lake pollution index is in the moderate category, while for CCME WQI, the lake is classified as in poor condition. The pollution index has a smaller standard error and deviation than the CCME WQI method. Hence, the pollution index method is more accurate in measuring the water quality status in Lake SDGs IPB Dramaga in these two periods.
Trophic Level Analysis of Eretan Coastal Waters, Indramayu Regency, West Java Province Zainalarifin, Jauhar; Effendi, Hefni; Mashar, Ali; Aprilia, Mita
Buletin Oseanografi Marina Vol 14, No 3 (2025): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v14i3.72062

Abstract

The coastal waters of Eretan located in the north of Indramayu Regency are used as fishing grounds by local fishermen. The condition of water input, especially from the surrounding river waters, namely the Cimanuk River, Cipunagara River, and Perawan River, is thought to affect the condition of coastal waters. This study aims to analyze the trophic level based on water quality conditions. Data collection on the quality of the aquatic environment was carried out in three locations with purposive sampling considerations, namely the Cipunagara estuary, the Perawan estuary, and the Cimanuk estuary. Sampling was carried out in two different seasons, namely the dry season and the rainy season. The method used in the analysis is the TRIX Index based on nutrients, phosphate, chlorophyll-α, and DO saturation. Meanwhile, water quality parameters at each location were analyzed using principal component analysis (PCA). The results of the study showed that the main water quality parameters tended to differ in each season. The trophic level at the three locations had values between 4.99 and 8.59, so they had mesotrophic to hypertrophic status. This shows that coastal water conditions need to be managed so that water conditions are more stable.
Pengaruh faktor hidrologi terhadap pencemaran sampah padat di sungai (Studi kasus: Sungai Citarum, Jawa Barat) Zainalarifin, Jauhar; Effendi, Hefni; Taryono, Taryono
Jurnal Pengelolaan Lingkungan Berkelanjutan (Journal of Environmental Sustainability Management) JPLB, Vol 8, No 3 (2024)
Publisher : Badan Kerjasama Pusat Studi Lingkungan (BKPSL) se-Indonesia bekerjasama dengan Pusat Penelitian Lingkungan Hidup IPB (PPLH-IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36813/jplb.8.3.233-245

Abstract

River hydrological factors are thought to influence the level of solid waste pollution that occurs in the Ciliwung River, this is one of the problems that causes a decline in river water quality and threatens the health of the surrounding environment. This research aims to analyze the influence of hydrological factors on the condition of solid waste pollution in the river. The research was conducted in April-June and August-November 2021 at five monitoring locations spread across Bandung Regency, West Bandung Regency, Purwakarta Regency and Bekasi Regency. The analysis used is a linear regression with the river width (X1), water level (X2) and current speed (X3) on solid waste reporting (Y). The analytical equation model obtained from this is Y = 0.0394 – 0.0041 X1 with a coefficient of determination value of 9,33% with a correlation coefficient reaching 30.55%. This research proves that narrow river width can increase the distribution of solid waste. Although hydrological factors influence forest ecosystems, a stronger influence is thought to come from human behavior factors that throw rubbish directly into rivers.