Abstract
<p>Phytoplankton have important as food-chain major component and primary production of marine environment. However, high abundance of phytoplankton could give harmful effects toward water ecosystem. Moreover, they could produce toxic substances that will be accumulated within their consumer. This accumulation could be dangerous for human or animals.This research were aimed to determine and calculatespecies of harmful algae in Banyuasin coastal waters. The study was conducted on April, June, August, October and December of 2013, and in February 2014, at ten stations. Phytoplankton samples were taken vertically using plankton nets. In the form of cone-shaped with a diameter of 30 cm, length 100 cm and mesh size 30 μm.The result showed that there are 35 genera of phytoplankton. That have been found and consisted of four groups; Bacillariophyceae, Dinophyceae, Cyanophyceae and Chlorophyceae. 13 species were identified as Harmful Algal (Chaetoceros, Coscinodiscus, Nitzschia, Skeletonema, Thalassiosira, Alexandrium, Ceratium, Dinophysis, Noctiluca, Protoperidinium, Prorocentrum, Anabaena dan Oscillatoria), with seven of them were known for having toxin (Nitzschia, Alexandrium, Dinophysis, Protoperidinium Prorocentrum, Anabaena and Oscillatoria). Monitoring result showed that the highest number of species of potential harmful algal blooms (HABs) occured in June and the highest abundance occured in August, especially Chaetoceros and Skeletonema.</p><p><strong>How to Cite</strong></p><p>Aryawati, R., Bengen, D. G., Prartono, T., &amp; Zulkifli, H. (2016). Harmful Algal in Banyuasin Coastal Waters, South Sumatera. <em>Biosaintifika: Journal of Biology &amp; Biology Education</em>, 8(2), 231-239.</p>
Highlights
Phytoplankton serve as primary producer of aquatic food web, and become crucial organism for all aquatic life
Sampling Area The sampling was carried out in Banyuasin water, South Sumatera on April, June, August, October, December 2013, and February 2014, which will be mentioned as a series of 1st month to 6th month
Phytoplankton was observed by using microscope equiped by Sedgwick Rafter Counting Cell (SRCC)
Summary
Phytoplankton serve as primary producer of aquatic food web, and become crucial organism for all aquatic life. The death of algae which sink to the water’s bottom will stimulate the growth of decomposer bacterium that exhaust dissolved oxygen concentration and lead to anoxic condition. This condition may kill many fish and cause the disruption of food web due to the replacement of some organism with other organisms, specially the ones with better endurance. Algal bloom is a rapid increase in the population of algae in water system. Harmful Algal Blooms (HABs) could be defined as overgrowths of algae that usually produce dangerous toxins in fresh or marine water
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