Kajian awal granulometri pada kawasan lamun dan terumbu karang: studi kasus di gugusan Pulau Pari, Kepulauan Seribu

Abstract. Granulometric study is considered as a tool to predict sediment formation process in an aquatic environment. This paper discusses brief assessment of granulometri studies on seagrass and coral reef areas in Indonesia by collecting samples at Pari Island waters. Sediment samples were taken in May 2008 near the coral reefs and seagrass area in the cluster of Pari Island waters, Seribu Islands, Jakarta. The wet sieving method was done to separate the sediment samples based on grain size. Statistical analysis i.e., mean, sorting, skewness, and kurtosis at both locations showed a considerably complex energy works on the sediment distribution in these locations.Keywords: granulometry; sediment; coral reef; seagrass Abstrak. Studi granulometri dapat menjadi alat penduga proses terbentuknya sedimen di suatu lingkungan perairan. Tulisan ini membahas kajian ringkas studi granulometri pada kawasan lamun dan terumbu karang di Indonesia dengan mengambil contoh di perairan Pulau Pari. Sampel sedimen diambil pada Mei 2008 di kawasan terumbu karang dan lamun pada perairan gugusan Pulau Pari, Kepulauan Seribu, Jakarta. Metode ayak basah dilakukan untuk memisahkan sampel sedimen berdasarkan ukuran butir. Hasil analisis statistik ukuran butiran berupa mean, sorting, skewness, dan kurtosis pada kedua lokasi mengindikasikan fungsi energi yang cukup kompleks bekerja terhadap sebaran sedimen di lokasi tersebut.Kata kunci: granulometri; sedimen; terumbu karang; padang lamu

Particle tracking simulation of marine debris using Lagrangian discrete and mesh spatial discretization in Banda Aceh waters

Ocean dynamics has a direct impact on the distribution of objects or dissolved particles such as marine debris. Hydrodynamic studies are currently an important tool to identify the potential pollution in the region. Data were collected from March to September 2019 in the northern waters of Banda Aceh. Wind data were obtained using AWS and bathymetry data were collected using the single beam echosounder. The results showed that the wind direction on the coast of Banda Aceh City was dominant towards the Northwest and Northeast with a maximum speed of 9 m/s. Wind direction will highly influence the sea surface currents dynamics that lead to longshore currents and radiation currents occur in coastal areas.Keywords:Marine debrisWasteFisher

Characteristics and Mineral Content of Sediment at Muara Pulau Kayu (MPK) of Southwest Aceh District

Study on sediment characteristics and mineral content at Muara Pulau Kayu (MPK) of Southwest Aceh District was conducted to find a general description of grain size and mineral content regarding to hydro-oceanographic process. Sampling was collected at MPK, Southwest Aceh District during March 2016. Purposive sampling method was used to determine 4 sampling sites covering estuary and beach area. Grain size and mineral content were analyzed with a set of sieves and X-Ray Fluorescence (XRF with standard reference mineral). Observation on the grain roundness and sphericity showed that sediment grains are generally more rounded at beach area. Mineral content at MPK are dominated by Si, Fe, K, Ca and Ti that are categorized into volcanic mineral which conclude that sediment at MPK originated from Mount Leuser which was an active volcano in the past

Alien Registration- Belanger, Joseph (Auburn, Androscoggin County)

https://digitalmaine.com/alien_docs/30765/thumbnail.jp

Pemetaan Daerah Penangkapan Ikan Pelagis Kecil di Perairan Utara Aceh

The objective of this study was to evaluate the distribution of small pelagic fish in northern Aceh water. The study was conducted on March, 2016 by using the systemtic questionnaire method. The correspondent were collected from the native fisherman along fisheries post of Lampulo, Krueng Raya, and Lhok Seudu. The collected data was then processed to obtrain the thematic maps. The result showed that the caught here categorized into six species, and predominantly by Decapterus ruselli. The waters among Sumatera and Weh Island have the highest amount of caught fish, ini which correlated to the lower temperature in those areas. Penelitian ini bertujuan untuk melihat sebaran daerah penangkapan ikan pelagis kecil di Perairan Utara Aceh.Penelitian dilakukan pada Maret 2016 dengan menggunakan metode kuesioner.Koresponden dari penelitian ini dikumpulkan dari nelayan yang berasal Pelabuhan Perikanan (PP) Lampulo, Krueng Raya, dan Lhok Seudu.Data yang terkumpulakan di olah kembali dengan peta tematik. Dari hasil penelitian ini menujukkan di Perairan Utara Aceh memiliki enam jenis spesies yang berbeda dan ikan layang deles (Decapterus ruselli) memiliki hasil tangkapan terbanyak di Perairan Utara Aceh. Batas perairan Sumatra dan Pulau Weh memiliki hasil tangkapan yang paling banyak tertangkap.Ikan pelagis kecil sanggat menyukai suhu yang lebih rendah

Hubungan Panjang Berat Ikan yang Tertangkap di Krueng Simpoe, Kabupaten Bireun, Aceh

Penelitian ini mengkaji tentang hubungan panjang berat dan factor kondisi ikan yang ditemukan di Krueng Simpoe, Kabupaten Bireun, Aceh. Tujuan penelitian ini adalah untukmengetahui distribusi ukuran ikan dan menganalisis hubungan panjang berat ikan yang didapat di Krueng Simpoe. Ikan yang didapat yaitu ikan Rasbora sp dan Puntius brevis. Pengambilan sampel dilakukan pada bulan November 2015, dengan menggunakan jarring dan jala. Hasil penelitian menunjukkan bahwa ikan Rasbora sp dan Puntius brevis memiliki pola pertumbuhan allometrik negatif. Selain itu, factor kondisi berat relative menunjukkan angka diatas 100. Faktor kondisi fulton perairan Krueng Simpoe mengindikasikan secara relatif dalam keadaan baik. Kata kunci : hubungan panjang berat, factor kondisi, allometrik The research is about the length weight relationships and condition factor of the freshwater fishes which were found in Simpoe River, Bireun, Aceh. The research purpose is to know the distribution of sizes fishes and to analyze length weight relationships fishes found in Simpoe River. The fishes are Rasbora sp and Puntius brevis. The sampling was conducted on November, 2015 by using net and castnet. The results revealed that Rasbora sp and Puntius brevis have allometric negative growth pattern. In addition, the relative weight condition factor's was over 100. And the Fulton's condition factor were not different significantly among fishes. It means that the Fulton's condition at Krueng Simpoe indicating good condition and well growth

Using Landsat-8 Imagery Data on Mapping of the Seagrass Distribution in Matahari Island, Pulau Banyak District, Aceh Province, Indonesia

The objective of the present study was to gathers information about the seagrass distribution area using the remote sensing that retrieved from Landsat-8. Analysis of Landsat-8 image is classified into 6 classes; seagrass, coral reefs, sand, sea, and cloud. The agreement between processed image of seagrass bed and ground truth reference was 70%. The seagrass ecosystem is well distributed along the Matahari Island, with the total area approximately 44.0123 Ha

Analisis Kesesuaian Parameter Perairan terhadap Komoditas Tambak Menggunakan Sistem Informasi Geografis (Sig) di Kabupaten Pidie Jaya

The study aimed to determine the suitability of fishponds in Pidie Jaya, the research was done using GIS spatial analysis method, where the water parameter samples were collected from 20 sampling points, the samples were taken within the river or flow water beside the fishpond. There were 5 parameters measured included salinity, pH, dissolved oxygen, water visibility, and nitrate contents. The analysis was done using kriging interpolation, reclassification, and overlay analysis using weighted overlay. Analysis based on 4 suitability criteria, very suitable, suitable, less suitable, and not suitable. The results of this analysis are that the fishponds fall into very suitable and suitable criteria. Of the total of ±1842 Ha fishponds, 2.37% covering ±43.76 Ha is classified as very suitable, and 97.63% covering ±1798.23 Ha classified as suitable. Results show that Pidie Jaya is good choice for low cost aquaculture ponds with a little treatment for nitrates. Key words: Pidie Jaya; fishpond; GIS; suitability analysis; weighted overlay. Penelitian ini bertujuan untuk mengetahui kesesuaian lahan tambak berdasarkan kualitas perairan di pesisir Kabupaten Pidie Jaya. Penelitian ini dilaksanakan dengan menggunakan metode analisis spasial Sistem Informasi Geografis (SIG), sampel parameter perairan dikumpulkan dari 20 titik sampling pada saluran tambak. Parameter perairan yang diukur meliputi 5 parameter kunci yang sangat berpengaruh terhadap komoditas tambak, meliputi salinitas, pH, oksigen terlarut, kecerahan air dan kandungan nitrat. Langkah analisis dilakukan menggunakan ordinary kriging, reclassify, dan weighted overlay. Tingkat kesesuaian lahan dibagi kedalam 4 kelas, yaitu sangat sesuai, sesuai, kurang sesuai, dan tidak sesuai. Didapatkan 2 tingkat kesesuaian yaitu kelas sangat sesuai sebesar 2.37% (±43.76 Ha) dan kelas sesuai sebesar 97.63% (±1798.23 Ha) dari total keseluruhan luas tambak seluas ±1842 ha. Hasil tersebut menunjukkan bahwa tambak di Kabupaten Pidie Jaya sesuai untuk USAha pertambakan dengan sedikit perlakuan terhadap nitrat

Karakteristik dan kandungan mineral pasir pantai Lhok Mee, Beureunut dan Leungah, Kabupaten Aceh Besar

Abstract. The objective of this research was to determine the characteristics and mineral content of coastal sand from  Lhokmee, Beureunut, and Leungah Aceh Besar District. The sand analysis was conducted at Material Laboratory of Mathematics and Natural Sciences Faculty, Syiah Kuala University from March to April, 2014. Samples were collected using purpossive sampling method. The observed physical characteristics of this research were sand color, shape and particle size. The mineral content was analysed using X-Ray Diffraction (XRD) and Joint Committee for Powder Diffraction Standard (JCPDS) program. The result showed that Lhok Mee coastal sand was physically characterized as white, sub-angular rounded shape and 0.21 mm of size, while Beureunut coastal sand was light brown, rounded-well rounded shape and 0.19 mm of size, then Leungah coastal sand was black, angular-well rounded shape and 0.13 mm of size. Based on  mineral content showed that Lhok Mee, Beureunut, and Leungah coastal sand were dominated by SiO3, SO3 and Fe3O4, respectively. All identified minerals at all stations were classified as volcanic minerals of lithogenous sediment. Keywords: Beach sands; Color difference; Mineral content; Shape; Particle size.

Pengaruh Umur Zigot pada Saat Kejutan Panas terhadap Keberhasilan Ginogenesis Ikan Seurukan (Osteochilus Vittatus)

The objectives of the present study was to determine the best age of the zygote for gynogenesis of seurukan fish (Osteochilus vittatus) using heat shock treatment. The completely randomized design was utilized in this study. Five levels of zygote age were tested, namely: 3 minutes, 5 minutes, 7 minutes, 9 minutes and 11 minutes after fertilization and one control treatment (without heat shock). The zygotes were shocked at the temperature of 38oC for 60 seconds and every treatment was done at three replications. The ANOVA test showed that the zygote age gave the significant effect on the triploidy level and growth performance of the seurukan fish (P0.05). It is concluded that the best zygote age of the seurukan fish for gynogenesis using heat shock treatment was 3 minutes after fertilization.Penelitian ini bertujuan untuk mendapatkan umur zigot terbaik untuk proses ginogenesis ikan seurukan (Osteochilus vittatus) dengan menggunakan kejutan suhu panas. Metode yang digunakan adalah eksperimen dengan model Rancangan Acak Lengkap faktor tunggal dengan enam taraf perlakuan, masing-masing perlakuan dengan tiga kali ulangan. Kejutan suhu yang diberikan yaitu 38oC dengan lama kejutan 60 detik, dengan perlakuan yaitu: kontrol (tanpa perlakuan kejutan panas), umur zigot 3 menit setelah pembuahan, umur zigot 7 menit setelah pembuahan, umur zigot 9 menit setelah pembuahan dan 11 menit setelah pembuahan. Uji ANOVA menunjukkan bahwa pemberian kejutan suhu panas pada umur zigot yang berbeda berpengaruh nyata terhadap triploidy dan pertumbuhan ikan seurukan (P<0,05). Persentase ikan triploid tertinggi dijumpai pada perlakuan 3 menit setelah pembuahan, nilai tidak berbeda nyata dengan perlakuan 5 menit, 7 menit dan 9 menit. Pertambahan bobot tertinggi dijumpai pada umur zigot 3 menit setelah pembuahan, nilai ini tidak berbeda nyata dengan perlakuan 5 menit, 7 menit dan 9 menit. Pertambahan panjang tertinggi dijumpai pada perlakuan 3 menit setelah pembuahan, nilai ini tidak berbeda nyata dengan perlakuan 5 menit (P<0,05). Berdasarkan hasil tersebut dapat disimpulkan bahwa umur zigot yang berbeda berpengaruh terhadap triploidy, dan umur zigot terbaik adalah 3 menit setelah pembuaha