Keanekaragaman Fitoplankton Sungai Ciliwung Pasca Kegiatan Bersih Ciliwung

Abstract

<p><em>Abstrak </em>- <strong>Sungai Ciliwung merupakan salah satu sungai yang tercemar karena banyak dimanfaatkan oleh warga jakarta diantaranya untuk kegiatan industri dan rumah tangga. Salah satu parameter biologi yang dapat digunakan sebagai indikator perubahan lingkungan yaitu Fitoplankton. Peran fitoplankton dalam ekosistem perairan yaitu sebagai produsen primer, hal ini karena fitoplankton memiliki kemampuan untuk fotosintesis. Penelitian ini dilaksanakan pada bulan Februari sampai dengan Juli 2016. Kegiatan Bersih Ciliwung dilaksanakan dari Rindam Jaya, Condet menuju Bidara Cina. Pasca kegiatan bersih ciliwung nilai oksigen terlarut (DO) dari hulu Rindam Jaya (Condet) menuju hilir hingga Bidara Cina mengalami penurunan, sehingga dapat mempengaruhi keanekaragaman fitoplankton. Perbedaan ini diduga memberikan gambaran keragaman komunitas fitoplankton yang berbeda sehingga dilakukan pengambilan sampel fitoplankton di kedua titik tersebut masing-masing dengan 3 kali pengulangan. Metode pengambilan sampel fitoplankton yang digunakan yaitu metode sampling Horizontal dan sampel diidentifikasi menggunakan <em>Sedgewick Rafter Cell Counting</em> (SRCC). </strong><strong>Berdasarkan penelitian, t</strong><strong>otal kelimpahan di Rindam Jaya lebih tinggi dibandingkan di Bidara Cina dengan angka berturut-turut 2511 Ind/L dan 1495 Ind/L.</strong><strong> </strong><strong>Hasil identifikasi fitoplankton yang ditemukan pada lokasi penelitian sebanyak 53 genus yang termasuk ke dalam 5 divisi yaitu, Bacillariophyta (20), Chlorophyta (16), Chrysophyta (5), Cyanophyta (8), dan Rhodophyta (4).</strong><strong> Kelimpahan fitoplankton pada stasiun</strong><strong> Rindam jaya lebih tinggi dibandingkan di Bidara</strong><strong> </strong><strong>Cina.</strong></p><p><strong> </strong></p><p><strong><em>Kata Kunci</em></strong><em> - Fitoplankton, Sungai Ciliwung, BioIndikator</em></p><p><em> </em></p><p><em>Abstract – </em><strong>Ciliwung river is one of the most polluted rivers because it’s used by many citizens of Jakarta for Industrial and household activity. One of biological parameter that’s can be used as an indicator of environmental changed is Phytoplankton. The role of phytoplankton in aquatic ecosystem that is as primary producers, this is because phytoplankton have the ability to photosytensis. This study was conducted from February to July 2016. Ciliwung clean activity is implemented from Rindam Jaya, Condet to Bidara Cina. Post-activity clean ciliwung value of dissolved-oxygen from upstream Ridam Jaya, Condet to downsream Bidara Cina decreased, so that it can affect the diversity of phytoplankton. This difference is thought to give a picture of the diversity of different phytoplankton community so that samples were taken of phytoplankton in two points each with three repetitions. Phytoplankton sampling method was used Horizontal sampling method and samples were identified using Sedgewick Rafter Cell Counting (SRCC). Based on the research, the total abundance in Rindam Jaya is higher than in Bidara Cina with consecutive numbers 2511 Ind / L and 1495 Ind / L. The results of phytoplankton identification were found in the study sites of 53 genera belonging to 5 divisions namely, Bacillariophyta (20), Chlorophyta (16), Chrysophyta (5), Cyanophyta (8), and Rhodophyta (4). The abundance of phytoplankton at Rindam Jaya station is higher than in Bidara Cina.</strong><strong></strong></p><p> </p><strong><em>Keyword</em></strong> - <em>Phytoplankton, Ciliwung River, Indicator Biotecnology</em>

Aquatic eDNA Metabarcoding Reveals Biodiversity and Plankton Composition in River Ecosystems

“…According to Effendi et al [49], numerous factors can obscure quantitative inferences from eDNA water samples, causing practical is the most common phylum found in the Lower Ciliwung River. These findings corroborate Pambudi et al [46], who observed that the group of phytoplankton that dominates freshwaters consists primarily of Bacillariophyta (diatoms) due to their high adaptability to the environment and rapid reproduction. According to Sirait et al [50], dominance of Bacillariophyta shows competition in resource utilisation and unbalanced or stressed aquatic environmental conditions.…”

“…However, this study detected more phytoplankton phyla (Bacillariophyta, Chlorophyta, Cryptista, Haptophyta, Ochrophyta, and Miozoa) than the 5 phytoplankton phyla (Bacillariophyta, Chlorophyta, Charophyta, Ochrophyta (former Chrysophyta), Cyanobacteria (former Cyanophyta), and Rhodophyta) reported by Pambudi et al [46]. This study did not detect Cyanobacteria as found by Pambudi et al [46]. This is thought to be caused by the primer used, namely the universal primer for metazoans.…”

Environmental DNA Biomonitoring in Urban River Ecosystem: A Ciliwung River Case Study

“…Bacillariophyta has high adaptability to aquatic conditions and can reproduce quickly [21]. Diatom, a kind of autotrophic photosynthetic eukaryotic algae, is an essential primary producer.…”

Community structure of phytoplankton in Downstream of the Segedong River, Kubu Raya Regency, West Kalimantan

“…Selain itu, kategori tingkat kesuburan rendah (oligotrofik) pada Stasiun 2 dan 3 di musim penghujan karena memiliki nilai kecepatan arus paling tinggi dari stasiun yang lain sehingga memungkinkan fitoplankton terbawa arus perairan. Pambudi et al (2017) menyatakan selain kurang dapat beradaptasi dengan kondisi lingkungan, rendahnya kelimpahan fitoplankton juga dipengaruhi oleh kecepatan arus. Kecepatan arus yang tinggi berakibat pada rendahnya kelimpahan fitoplankton karena kecepatan arus mempengaruhi pergerakan fitoplankton.…”