MONITORING OF ACID MINE DRAINAGE CONTAMINATION IN TROPICAL STREAM USING BENTHIC MACROINVERTEBRATES AS BIOINDICATOR (CASE STUDY: LATI RIVER OF EAST KALIMANTAN PROVINCE)

• Main Author: Agung Ismadi, Riza
• Format: Theses
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/69134
• Institution: Institut Teknologi Bandung

Acid mine drainage (AMD) contaminants are characterized as acidic and contain high levels of heavy metals so that they have the potential to cause disturbances in the ecosystem. The biomonitoring method using macrozoobenthos can show the actual effect of metal levels upon the life of organisms in the ecosystem. Lati River is a recipient stream of acid mine drainage from PT Berau Coal Energy Tbk. It was chosen as the research location because it is the main drainage for AMD flow in the Lati Mine Operation (LMO) work area. Sampling of macrozoobenthos and sediments was carried out in March and continued with sample analysis in April to July 2022. Data analysis was in the form of calculation of: 1). Biological indices including abundance index, Shannon-Wiener diversity index, uniformity and dominance index; 2). CCME WQI water quality index; 3). Pearson-Spearman correlation analysis and 4). Principal Component Analysis (PCA). The results stated that as many as 15 taxa of the genus macrozoobenthos were found in the Lati River. The Lati River is classified as polluted, which is in the category of marginal to poor quality based on the WQI CCME and biotic indices. Environmental parameters associated with the presence of heavy metals were negatively correlated with the abundance and diversity of macrozoobenthos. The PCA test that has been carried out divides sungai Lati’s research station into three different quadrants. Station 1 is the most identical station with environmental parameters due to the presence of AMD, while the taxa that are strongly associated with AMD is Chimarra.