Chlorella sp. is a single-celled microalga that mostly grows in marine waters. Chlorella sp. can grow in heavy polluted waters and therefore it has potency as a bioremediation agent. This study aimed was to analyze the effect of coal on the growth of Chlorella sp. in plant isolation media and the quality of water in plant isolation media for Chlorella sp. The complete randomized design with 4 treatments of coal concentration was used in this study. Four concentration concentrations were tested namely, 0 ppt, 1 ppt, 3 ppt and 5 ppt. The results revealed that coal with different concentrations gave no significant effect on the growth of Chlorella sp. (p> 0.05). The density among the concentrations of 0 ppt, 1 ppt, 3 ppt and 5 ppt were not significantly different. In addition, the coal concentration gave no significant effect on temperature, salinity and potential hydrogen (pH) (p>0.05). The Chlorella sp. can grow in the polluted water by coal, and therefore this alga can be used as potential organisms for bioremediation of coal waste.Chlorella sp. merupakan mikroalga bersel satu yang banyak tumbuh di perairan laut. Chlorella sp. dapat tumbuh di perairan yang tercemar berat sehingga berpotensi sebagai bioremediator. Penelitian ini bertujuan untuk menganalisis pengaruh konsentrasi batubara terhadap pertumbuhan Chlorella sp. dan kualitas air pada media kultur Chlorella sp. Metode yang digunakan dalam penelitian ini adalah metode eksperimen skala laboratorium. Rancangan percobaan yang digunakan adalah rancangan acak lengkap dengan 4 perlakuan konsentrasi batubara 0 ppt, 1 ppt, 3 ppt dan 5 ppt. Hasil penelitian menunjukkan bahwa batubara dengan konsentrasi yang berbeda tidak berpengaruh nyata terhadap laju pertumbuhan Chlorella sp (P>0,05). Kepadatan antara konsentrasi 0 ppt, 1 ppt, 3 ppt dan 5 ppt tidak terlalu jauh berbeda. Konsentrasi batubara juga tidak berpengaruh nyata terhadap parameter suhu, salinitas dan derajat keasaman (pH) (p>0,05). Chlorella sp. dapat tumbuh pada lingkungan yang tercemar oleh batubara, sehingga dapat dipakai sebagai organisme yang berpotensi untuk bioremediasi batubara.
The fisherman of Bengkulu city to hunt the fishing ground for pelagic was still conventionally. Pelagic fish was catched by many types of fishing gear. For optimalizing sustainable pelagic fisheries was required the information about fishing ground distribution and selecting superior fishing gear for pelagic fish. The purpose of this study was to find out the fishing ground distribution and selecting superior fishing gear for pelagic fish. The method was used to find out the fishing ground distribution by mapping and selecting superior fishing ground by scoring the result showed that the fishing ground of pelagic was around Tikus island, Mega island, and Enggano island. Based on the standardization result of technic, biology, social, and economic aspect showed that selected fishing gear as superior fishing gears for pelagic were purse seine, boat lift net, and troll line. The selected fishing gear for pelagic fish was superior fishing gear of all alternative fishing gear for pelagic fish.Keyword: fishing ground, pelagic fish, superior fishing gear ABSTRAK Nelayan Kota Bengkulu dalam pencarian fishing ground (daerah penangkapan ikan) ikan pelagis masih secara konvensional. Ikan pelagis ditangkap oleh beberapa jenis alat tangkap. Untuk mengoptimalkan perikanan pelagis secara berkelanjutan maka dibutuhkan informasi sebaran daerah penangkapan ikan dan pemilihan alat tangkap unggulan untuk ikan pelagis. Penelitian ini bertujuan untuk mengetahui sebaran daerah penangkapan ikan dan menentukan alat tangkap unggulan ikan pelagis. Metode yang digunakan untuk mengetahui sebaran daerah penangkapan ikan menggunakan pemetaan dan menentukan alat tangkap unggulan menggunakan metode skoring. Hasil penelitian menunjukkan bahwa daerah penangkapan ikan tersebar di sekitar Pulau Tikus, Pulau Mega, dan Pulau Enggano. Berdasarkan hasil standarisasi gabungan dari aspek teknik, biologi, sosial, dan ekonomi terpilih alat tangkap unggulan untuk ikan pelagis yaitu purse seine, bagan perahu, dan pancing tonda. Alat tangkap yang terpilih menjadi alat tangkap unggulan ikan pelagis merupakan alat tangkap yang unggul dari semua alternatif alat tangkap ikan pelagis.Kata kunci: alat tangkap unggulan, daerah penangkapan ikan, ikan pelagis
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