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KELIMPAHAN DAN SEBARAN SPASIAL-TEMPORAL FITOPLANKTON DI ESTUARI SUNGAI SIAK KAITANNYA DENGAN PARAMETER OSEANOGRAFI amri, khairul; Ma?mun, Asep; Priatna, Asep; Suman, Ali; Prianto, Eko; Muchlizar, Muchlizar
MAJALAH ILMIAH GLOBE Vol 21, No 2 (2019)
Publisher : Badan Informasi Geospasial

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (852.062 KB) | DOI: 10.24895/MIG.2019.21-2.976

Abstract

Kelimpahan fitoplankton menunjukkan tingkat produktivitas perairan. Dalam upaya pemanfaatan sumberdaya hayati estuari Sungai Siak, diperlukan kajian kondisi komunitas dan kelimpahan fitoplankton serta hubungannya dengan kondisi oseanografi yang menggambarkan produktivitas perairannya. Untuk itu, telah dilakukan penelitian mengenai hubungan antara kelimpahan dan sebaran spasial-temporal fitoplankton dengan parameter oseanografi di estuari Sungai Siak. Penelitian ini dilakukan secara in-situ di 16 titik sampling pada April, Mei, Juni, Agustus, September, Oktober dan November 2015. Hasil penelitian menemukan 54 genera dari 3 kelas yaitu Chyanophyceae, Dinophyceae dan Bacilliriophycaea. Kelas Bacilliriophycaea merupakan yang dominan (85%) dengan jenis yang terbanyak dan selalu ditemukan di setiap stasiun adalah Chaetoceros dan Rhizosolenia. Kelimpahan fitoplankton tergolong sedang, dengan kelimpahan tertinggi pada Juni dan Oktober serta terendah April. Indeks keanekaragaman (H?) dan indeks keseragaman (E) tergolong tinggi masing-masing 4,39-5,46 dan 0,83-0,94, sementara indeks dominansi (D) termasuk kategori rendah (0,03-0,16). Indeks komunitas ini menunjukkan fitoplankton di perairan ini keanekaragaman dan kestabilan komunitasnya sedang dan tidak ada spesies yang mendominasi. Uji korelasi menunjukkan terdapat keterkaitan yang erat antara kelimpahan dengan Oksigen (0,667); salinitas (0,663), kecerahan (0,628); pH (0,472); arus (0,283); dan suhu (0,046). Komponen utama oseanografi perairan ini  mempengaruhi secara signifikan (75%) dengan selang kepercayaan 95%. Meskipun tingkat kecerahan perairan dan kandungan Oksigen  terlarut tergolong rendah, namun parameter oseanografi lainnya seperti suhu, salinitas dan pH masih berada pada kisaran yang masih dapat mendukung kehidupan fitoplankton di estuari Sungai Siak.
Musim pemijahan dan ukuran layak tangkap udang jerbung (Penaeus merguiensis) di perairan Dumai dan sekitarnya, Riau Putri Pane, Andina Ramadhani; Suman, Ali
Dinamika Lingkungan Indonesia Vol 7, No 2 (2020)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1763.021 KB) | DOI: 10.31258/dli.7.2.p.81-88

Abstract

The high demand for shrimp commodities will increase catching to spur production so that it will affect the shrimp population. This scientific study will discuss the spawning season of banana shrimp (Penaeus merguiensis), catch size, and environmental conditions of Dumai and surrounding waters. This research was conducted from April to December 2018 using survey methods around the waters of Dumai, Riau. Data collection was carried out monthly on 4,677 banana shrimps assisted by enumerators. The analysis was carried out on the relationship between carapace length and body weight, sex ratio, gonad maturity level, and catch size. The condition of the aquatic environment that influences the process of reproduction becomes a comparison in determining management efforts. Banana shrimp size structure 18-60 mm, dominant at 28 mm and negative allometric growth patterns. The genital ratio shows that female shrimp are more dominant than males and the spawning season lasts throughout the year with peaks in June and December. The length at first capture was 34.5 mm with the length at first maturity was 30.8 mm (Lc> Lm), meaning that it had spawned before being capture. However, the polluted water environment can interfere with the process of growth and population growth even though various environmental parameters are still within normal limits. So the thing to do is to close the shrimp catching area in June and December, not catch in the spawning area, the size of the shrimp that can be caught is 31 mm and protect the aquatic environment from pollution.
IDENTIFIKASI DAN STRATEGI PENGEMBANGAN POTENSI SUB SEKTOR PERIKANAN PADA KAWASAN EKONOMI BARU DI PROVINSI JAMBI Ridwansyah, Muhammad; Desmaryani, Susi; Irmanelly, Irmanelly; Musnaini, Musnaini; Suman, Ali; Fazri, Andang
Jurnal Kebijakan Perikanan Indonesia Vol 16, No 1 (2024): (Mei) 2024
Publisher : Pusat Riset Perikanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/jkpi.16.1.2024.39-50

Abstract

Kawasan SENTUSA direncanakan oleh Pemerintah Provinsi Jambi sebagai kawasan ekonomi baru yang mencakup tiga kabupaten (Tanjung Jabung Barat, Tanjung Jabung Timur dan Muaro Jambi). Kawasan SENTUSA termasuk Zona Ekonomi Eksklusif (ZEE) Laut Cina Selatan yang memiliki potensi perikanan laut mencapai 77.980 ton per tahun. Tulisan ini bertujuan untuk mengetahui basis potensi dan strategi untuk pengembangan sub sektor perikanan di Kawasan SENTUSA. Pengumpulan data dilakukan dengan menggunakan metode survei, penelusuran dokumen atau laporan, dan Fokus Group Diskusi. Metode analisis data terdiri dari metode Location Question (LQ) dan analisa SWOT. Hasil analisis menunjukkan perikanan laut merupakan basis di Kabupaten Tanjung Jabung Barat dan Tanjung Jabung Timur, sementara budidaya perikanan darat, basis di Kabupaten Muaro Jambi. Skor kekuatan lebih baik dari kelemaham, namun ancaman lebih besar dari peluang untuk mengembangkan komoditas perikanan ke sektor industri olahan.The SENTUSA region has been planned by Government of Jambi Province as a new economic zone where coverage three distructs (Tanjung Jabung Barat, Tanjung Jabung Timur dan Muaro Jambi). The SENTUSA area includes the Exclusive Economic Zone (EEZ) of the South China Sea which has marine fisheries potential reaching 77,980 tonnes per year. This paper aims to find out a base of fisheries subsector development in SENTUSA. The data collection was conducted in the three ditsricts using survey, documents or reports review, and Focuses Group Discussion. The analysis method used include the Location Question and SWOT quantitiave. The results of the study show that The results of the analysis show that marine fisheries are based in West Tanjung Jabung and East Tanjung Jabung Regencies, while land fisheries cultivation is based in Muaro Jambi Regency. The strength score is better than weaknesses, but the threat is greater than the opportunity for developing the secondary sector.
DINAMIKA PENANGKAPAN DAN STATUS STOK UDANG DOGOL (Metapenaeus ensis de Haan) DI PERAIRAN BOMBANA DAN SEKITARNYA, SULAWESI TENGGARA Suman, Ali; Hasanah, Ap'idatul; Bintoro, Gatut; Taufik, Muhammad
Jurnal Penelitian Perikanan Indonesia Vol 30, No 2 (2024): (Juni) 2024
Publisher : Politeknik Kelautan dan Perikanan Karawang, BRSDM KP.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/jppi.30.2.2024.65-74

Abstract

Tingginya permintaan pasar terhadap udang dogol (Metapenaeus ensis de Haan) telah mengakibatkan tingginya intensitas penangkapan yang jika berlangsung secara terus-menerus akan mengancam kelestariannya. Penelitian tentang status stok merupakan salah satu dasar utama dalam merumuskan pengelolaan menuju pemanfaatannya secara berkelanjutan. Tujuan penelitian ini adalah untuk mengetahui status stok udang dogol di perairan Bombana dan sekitarnya, Sulawesi Tenggara. Penelitian dilakukan dari bulan April sampai dengan Nopember 2021 dengan metode survey. Hasil penelitian menunjukkan bahwa alat tangkap yang digunakan untuk mengusahakan udang dogol adalah pukat dasar (mini trawl) dengan komposisi hasil tangkapannya didominasi udang dogol (M. ensis de Haan) sekitar 26 %. Pola pertumbuhan udang dogol di perairan Bombana dan sekitarnya bersifat allometrik negatif serta perbandingan kelamin jantan dan betina berada dalam keaadan tidak seimbang. Ukuran rata-rata pertama kali tertangkap (Lc) adalah pada panjang karapas 29,8 mm dan ukuran rata-rata pertama kali matang kelamin (Lm) udang dogol adalah pada panjang karapas 31,7 mm. Laju pertumbuhan (K) udang dogol  sebagai 1,0 per tahun dan panjang total maksimum (Loo) sebagai 46,2 mm. Laju kematian total (Z) udang dogol sebagai 4,42, per tahun, laju kematian karena penangkapan (F) dan laju kematian alami (M) masing-masing 1.58 per tahun  dan 2, 84 per tahun. Tingkat pemanfaatan (E) udang dogol adalah 0,36 (72 %) per tahun, dengan demikian status stok udang dogol belum berada pada penangkapan berlebih (overfishing). Agar sumber daya udang masih tetap terjamin kelestariannya, maka masih bisa dilakukan penambahan upaya sekitar 28 % dari jumlah upaya saat ini.The high market demand for Endeavour shrimp (Metapenaeus ensis de Haan) has resulted in high fishing intensity, which, if it continues, will endanger the species' sustainability. Studies of stock status are important for formulating a management for sustainable utilization. The purpose of this study was to determine the stock status of endeavour shrimp in the Bombana and and its surrounding waters. The study was conducted from April to November 2021 using a survey method. The study results revealed that the endeavor shrmp growth pattern in Bombana watwas negative allometric and that the ratio of males and females was unbalanced. The length at first capture (Lc) was 24,9 mm (carapace length) and the length at first maturity (Lm) was at a total carapace length of 31,7 mm. The growth rate (K) as 1,0 per year and the  carapace length maximum (L∞) was 46.a mm. The estimate total mortality rate (Z) was 2.51 per year, the fishing mortality rate (F) and natural mortality rate (M) were 0.91 per year and 1.61 per year, respectively. The exploitation rate (E) was 0.36 (72 %) per year, therefore that the stock status isn’t overfishing. In order to ensure the sustainability of the endeavour shrimp, there are still opportunities for increasing effort about 28 % from the current situation.
Comparison of Two Isolation Methods for Naturally Preserved DNA in Ambergris Fathurahman, Fabian Rizky; Suman, Ali; Mahmoud, Hanan Hassan Alsheikh; Nuryanto, Agus
Biosaintifika: Journal of Biology & Biology Education Vol. 17 No. 1 (2025): Inpress April 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v17i1.14302

Abstract

DNA extraction is a fundamental initial step in numerous molecular research studies. Different extraction methods are required for different biological samples to obtain high-quality DNA. Therefore, this step is one of the limiting factors for the success of molecular analysis. There has been no research evaluating an appropriate method to extract DNA from ambergris jetsam samples. This study aims to determine an appropriate method for extracting DNA from whale ambergris samples. The ambergris sample was collected from the southern coast of Cilacap. DNA extraction was performed using a commercial DNA isolation kit and the Chelex® 100 method. The extracted DNA was visualized using agarose gel electrophoresis followed by quantification with a UV Nanodrop spectrophotometer. The data were analyzed descriptively to determine the most effective extraction method. The success of the extraction was also assessed by measuring the DNA concentration using the Nanodrop spectrophotometer. The results showed that the commercial isolation kit failed to produce genomic DNA from whale ambergris, as indicated by the absence of stained DNA bands on the agarose gel. In contrast, the Chelex® 100 method successfully produced genomic DNA from ambergris, as evidenced by the presence of stained DNA bands on the agarose gel and a high quantity of genomic DNA after a Nanodrop measurement. It can be concluded that the Chelex® 100 method is more suitable than commercial kits for extracting DNA from ambergris samples. This finding contributes to the development of various scientific fields based on molecular data by providing evidence that each biological sample requires an appropriate method to obtain high-quality DNA.