Karakteristik Sebaran Fitoplankton di Perairan Muara Sungai Sugihan, Sumatera Selatan

Abstract

The anthropogenic activity around Sugihan Estuary might drive changes on physical-chemical factors which affect the abundance and distribution of phytoplankton in the Sugihan Estuary. The purpose of this study was to analyze the abundance and distribution of phytoplankton based on physical-chemical parameters at Sugihan Estuary, South Sumatera. Samples were taken at 18 stations in towards low tide condition. The measured parameters include light intensity, visibility, temperature, current velocity, salinity, pH, dissolved oxygen, nitrate, phosphate and phytoplankton samples. Principal Component Analysis (PCA) was used to determine the characteristic of phytoplankton distribution. We found 14 genus of phytoplankton which consist of 13 genera of Bacillariophyceae and 1 genus of Dinophyceae. The entire observation stations were classified into four groups based on abundance and the genus of phytoplankton. The phytoplankton abundance ranged between 101 cell/l to 1071 cell/l. The phytoplankton abundance and distribution are in linear correlation with light intensity, visibility, pH, dissolved oxygen, salinity and current velocity. This research could contribute on describing the water productivity level of Sugihan Estuary. Aktivitas di perairan Muara Sungai Sugihan berpotensi mengakibatkan perubahan kondisi fisika-kimia perairan yang berpengaruh pada kelimpahan dan distribusi fitoplankton. Tujuan penelitian ini untuk menganalisis kelimpahan dan distribusi fitoplankton dalam kaitannya dengan parameter fisika dan kimia perairan Muara Sugihan, Sumatera Selatan. Pengambilan sampel dilakukan pada 18 titik stasiun dalam kondisi perairan menuju surut. Parameter lingkungan yang diukur meliputi intensitas cahaya, kecerahan, suhu, kecepatan arus, salinitas, pH, oksigen terlarut, nitrat, fosfat dan sampel fitoplankton. Karakteristik sebaran fitoplankton dianalisis dengan menggunakan Analisis Komponen Utama (PCA). Hasil pengamatan fitoplankton ditemukan sebanyak 14 genus, 13 genus dari kelas Bacillariophyceae dan satu genus dari kelas Dinophyceae. Seluruh stasiun pengamatan dikelompokkan menjadi empat kelompok berdasarkan kelimpahan dan genus fitoplanktonnya. Kelimpahan fitoplankton berkisar antara 101 sel/l hingga 1071 sel/l. Hubungan distribusi dan kelimpahan fitoplankton berbanding lurus dengan intensitas cahaya, kecerahan, pH, oksigen terlarut, salinitas dan kecepatan arus. Penelitian ini dapat berkontribusi dalam menggambarkan tingkat kesuburan perairan di Muara Sungai Sugihan Sumatera Selatan.

Linking a gap, First record of dusky-gilled mudskipper Periophthalmus variabilis Eggert, 1935 (Perciformes: Gobiidae) in southern Sumatra, Indonesia

“…Our observation suggest Sugihan estuary was dominated by mix of few species of Rhizophora spp and Avicennia spp. Previous studies of some environment aspects in Sugihan estuary conducted by Ramadoni et al (2018) and Mulyadi et al (2019) suggest few water parameters in this area having value here: water temperature (26-31 0 C), salinity (10-22‰), pH (6-7), Dissolved Oxygen or DO (4.96-6.03 mg/l), brightness (61-100%) and current velocity (0.001-0.026 m/s).…”

The assessment of demersal fish community structure in Kuala Langsa estuary, Langsa City

“…As stated by [24] estuary areas are very productive, and serve as habitats for various types of coastal and marine biota [25] so they have high biodiversity [22,25,26,27,28]. [29] claimed that the estuary ecosystem is used by biota (particularly fish) as a spawning area, nursery, food storage area, and migration route; in an estuary environment fish are generally euryhaline [20].…”

“…[29] claimed that the estuary ecosystem is used by biota (particularly fish) as a spawning area, nursery, food storage area, and migration route; in an estuary environment fish are generally euryhaline [20]. However, estuary areas are now widely utilised by humans for economic development [25,26,27,28,30,31,32]. The estuary area of Kuala Langsa, Langsa City, has also been used as a port area, ecotourism, residential areas, aquaculture, capture fisheries, and ship transportation.…”

“…The estuary area of Kuala Langsa, Langsa City, has also been used as a port area, ecotourism, residential areas, aquaculture, capture fisheries, and ship transportation. According to [21] and [25], the high level of utilization of estuary areas by human activities will cause the ecological balance to be disturbed (physically and as a system as a whole), this will affect the existence of associated biota contained therein such as fish communities.…”

The Species Composition of Phytoplankton and Nutrient Content in the Nipa Nypa fruticans Ecosystem on the West Coast of Aceh, Indonesia

“…Rahayu et al [14] reported the plankton community structure and trophic status of Wadaslintang Reservoir in Indonesia. The abundance of phytoplankton in Sugihan River, South Sumatra was reported by Mulyadi et al [15], and Jannah and Muchlisin [16] have been evaluated the phytoplankton community at estuary of Krueng Aceh River post tsunami. However, the previous studies were generally carried out in rivers, lakes, and estuaries without the nipa plant, while studies on the abundance and distribution of phytoplankton in the estuary associated with the nipa ecosystem, particularly on the West coast of Aceh have never been reported.…”