The study aimed to determine the performance of whiteleg shrimp culture in relation to temporal and spatial aspects and characteristics and water quality status. Measurement and sampling of water were carried out before stocking/initial stocking of culture whiteleg shrimp (rainy season) and end of culture/after harvesting of whiteleg shrimp (dry season) at two locations in the coastal area of Bulukumba Regency, namely Bonto Bahari Subdistrict (BB) and Gantarang Subdistrict (GT), and one location as a control, namely in the coastal area of Ujung Loe Subdistrict. Variables measured and analyzed included temperature, salinity, pH, dissolved oxygen, nitrate, nitrite, ammonia, phosphate, total suspended solids, and total organic matter. Data were analyzed by descriptive statistics, multivariate statistics, and non-parametric statistics. Water quality status was determined using the Storet (Storage and Retrieval) method. The results showed that the culture of whiteleg shrimp was technology intensive with a stocking density of 110–220 ind/m2 with productivity between 13.9 and 44.4 tons/ha/cycle. The predicted waste load of N is 28.00 tons/cycle and P reaches 6.61 tons/cycle. Another result was that changes in water quality status during the rainy season were classified as moderately polluted at the BB location and complying with quality standards at the GT location. In the dry season, both locations were categorized as heavily polluted. Variables of water quality that caused the decrease in water quality status in both locations (BB and GT) were observed to increase salinity, nitrate concentration, and ammonia concentration and decreased dissolved oxygen concentration in the dry season. It is recommended to carry out proper feed management, use of probiotics, and increase the capacity and capability of wastewater treatment plants to reduce ammonia and nitrate concentrations in water in coastal areas. It is necessary to determine a more precise time for whiteleg shrimp stocking by reducing the possibility that whiteleg shrimp culture will still occur at the dry season’s peak.

ABSTRAKKepiting bakau bersifat kanibal dan cenderung memiliki laju pertumbuhan yang lambat ketika diberi pakan buatan. Triptopan adalah salah satu asam amino esensial untuk pertumbuhan dan merupakan prekursor pembentukan serotonin yang dapat mengontrol sifat agresif pada beberapa vertebrata. Penelitian ini bertujuan untuk mendapatkan dosis optimum triptopan pakan terhadap pertumbuhan dan sintasan krablet selama masa pendederan. Empat dosis penambahan L-triptopan dalam pakan yaitu: 0% (A); 0,25% (B); 0,5% (C); dan 1,0% (D) dengan kadar triptopan dalam pakan berturut-turut 0,41%; 0,52%; 0,67%; dan 0,96%; serta kontrol berupa pakan rebon kering (E) yang mengandung triptopan sebanyak 0,79%. Hewan uji yang digunakan adalah krablet kepiting bakau berumur 3-5 hari sejak memasuki stadia krablet. Krablet dipelihara dalam bak fiber berukuran 1,0 m x 1,0 m x 0,5 m sebanyak 15 unit dengan kepadatan masing-masing 50 ekor/m 2 . Selama lima minggu pemeliharaan, krablet diberi pakan uji sebanyak 30%-15%/hari. Hasil penelitian menunjukkan bahwa krablet yang diberi pakan mengandung triptopan 0,67% menunjukkan laju pertumbuhan tertinggi dan berbeda nyata (P<0,05) dengan krablet yang diberi pakan mengandung triptopan 0,41%. Rasio efisiensi protein tertinggi juga didapatkan pada krablet yang diberi pakan mengandung triptopan 0,67% dan berbeda nyata (P<0,05) dengan krablet yang diberi pakan rebon. Sintasan, konsumsi pakan harian, rasio konversi pakan, dan komposisi proksimat total tubuh krablet relatif sama di antara perlakuan, meskipun ada kecenderungan terbaik pada krablet yang diberi pakan mengandung 0,67% triptopan.

So far, there is a claim that the conflict resolution conducted by tradition institution is mediation, but in some extend it showed the differences in principle and procedure. Based on the argument this article has the purposes to know any conflict frequently broken among Aceh community, the patterns of cooperation of the tradition institutions, and to know the most dominant institution in resolving conflict. Applying qualitative method, it is revealed that tradition institutions took a very important part in resolving confling in Aceh society. Eventhough all elements of the tradition institutions are involved in conflict resolution but in the processes of conflict resolution in gampong level, keuchik has a very important and strategic role. ***Selama ini muncul klaim bahwa praktek penyelesaian konflik yang dilakukan oleh lembaga adat adalah mediasi tetapi pada tataran realitasnya menunjukkan ada perbedaan dalam prinsip dan prosedur yang selama ini dilakukan. Oleh karena itu tulisan ini bertujuan untuk mengetahui macam-macam konflik yang sering terjadi dalam masyarakat Aceh dan melihat pola kerjasama yang dilakukan lembaga adat dalam menyelesaikan konflik serta siapakah diantara mereka yang paling dominan dalam menyelesaikan konflik. Dengan menggunakan metode penelitian kualitatif ditemukan bahwa lembaga adat telah memainkan peran yang sangat signifikan dalam menyelesaikan konflik di kalangan masyarakat Aceh. Meskipun semua unsur lembaga adat terlibat dalam menyelesaikan konflik tetapi dalam proses penyelesaian konflik untuk tingkat gampong, keuchik menduduki peran yang sangat penting dan strategis.

Polycyclic aromatic hydrocarbons (PAHs) contaminants have toxic, carcinogenic, and mutagenic properties. Screening bacteria from different sources capable of carrying out the biodegradation of (PAHs) is essential for mapping and mobilization purposes and applying them to polluted hydrocarbon environments. The study aims to compare the capacity of PAH biodegradation by two types of bacteria isolated from different sources. The method applied is the interaction between bacterial suspension and pyrene-contaminated waste for 30 days. Biodegradation products in organic compounds were analyzed using gas chromatography/mass spectroscopy (GC/MS) and Fourier transform infrared spectroscopy (FTIR). The analysis results found several indications of the performance of bacterial biodegradation: The capacity of pyrene degradation by Bacillus licheniformis strain ATCC 9789 (Bl) bacteria against pyrene was relatively more dominant than Sphingobacterium sp. strain 21 (Sb) bacteria. The percentage of total bacterial biodegradation for product type Sb was (39.00%), and that of the product of bacterial degradation type Bl (38.29%). The biodegradation products of the test bacteria (Bl and Sb) were relatively similar to pyrene in the form of alcohol and carboxylic acid organic compounds. There was no significant difference in the pyrene biodegradation between Bl and Sb bacteria.

ABSTRAKPenelitian ini bertujuan untuk menerapkan strategi pengelolaan pariwisata budaya ritual bedekeh sebagai daya tarik pariwisata budaya dan menyajikan beberapa persoalan mendasar terkait keberadaan suku Akit di pulau Rupat Kabupaten Bengkalis Provinsi Riau. Metodologi yang digunakan adalah metode penelitian kualitatif. Hasil penelitian menunjukkan bahwa secara umum potensi budaya ritual bedekeh suku Akit cukup menarik dan unik. Beberapa permasalahan yang ada seperti belum optimalnya kualitas sumber daya manusia, sarana dan prasarana, promosi. Hal tersebut dapat diatasi dengan peran serta aktif dari berbagai pihak terutama masyarakat setempat dan pemerintah daerah.