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Ichsan Setiawan
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Faculty of Marine and Fisheries Universitas Syiah Kuala Jalan Meureubo No. 1, Kopelma Darussalam Banda Aceh, 23111, Indonesia
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Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan
Published by Universitas Syiah Kuala
ISSN : 20897790     EISSN : 25026194     DOI : 10.13170/depik
Core Subject : Science, Education, Engineering,
Earth & Planetary Sciences Education Engineering
Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan is a peer review international journal, this journal is publishing high-quality articles in aquatic sciences and fisheries in general. The aim of the journal is to publish and disseminate the current or new findings of the research, and give a significant contribution to the development of fisheries and aquatic sciences in several topics, but not limited to: Fisheries (Aquaculture, Capture Fisheries, Fish Processing) Aquatic Ecology (Freshwater, Marine, and Brackishwater) Aquatic Biology (Fish, Mollusk, Crustacean, Plankton, Coral reefs) Oceanography
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Oseanografi
Articles 12 Documents
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Search results for , issue "Vol 5, No 1 (2016): APRIL 2016." : 12 Documents clear
Analisis pengaruh faktor kualitas air terhadap resiko penyakit white spot syndrome virus (wssv) pada udang vannamei (Litopenaeus vannamei) di Kecamatan Peudada Kabupaten Bireuen Zulpikar Zulpikar; Teuku Reza Ferasyi; Sugito Sugito
Depik Vol 5, No 1 (2016): APRIL 2016.
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.5.1.3753

Abstract

Abstract. Research on water quality that influence the risk of White Spot Syndrome Virus (WSSV) in vannamei (L vannamei) shrimps in Peudada Subdistrict of Bireuen District has been done. This research was conducted on October 16 until December 12, 2014 which aimed to study the effects of water quality on the risk of WSSV disease on vannamei shrimpsover 100 fishponds in Peudada Subdistricts. The results showed that 6 % of vannamei fishponds were infecetd by WSSV. Salinity and water resources were statistically significant on the WSSV ( P 0.05) over infected fishponds. Penelitian tentang pengaruh kualitas air terhadap resiko penyakit White Spot Syndrome Virus (WSSV) pada udang vannamei (Lvannamei) di Kecamatan Peudada Kabupaten Bireuen. Penelitian ini dilakukan pada 6 Oktober hingga 12 Desember 2014 dengan tujuan mengetahui pengaruh faktor kualitas air terhadap tingkat infeksi WSSV pada udang vannamei di tambak dalam kecamatan Peudada Kabupaten Bireuen. Sampel air dan tambak udang diambil dari 100 tambak udang vannamei di Kecamatan Peudada Kabupaten Bireuen. Sampel air dan udang diambil dari setiap tambak. Dari hasil kajian ditemukan bahwa sejumlah 6% tambak terinfeksi WSSV. Sementara itu dari hasil pemeriksaan kualitas air menunjukkan bahwa salinitas dan sumber air berpengaruh terhadap infeksi WSSV (P0.05).Kata kunci: udang vannamei; WSSV; salinitas; infeksi; prevalensi
Pencemaran merkuri di perairan dan karakteristiknya: suatu kajian kepustakaan ringkas M. Adlim
Depik Vol 5, No 1 (2016): APRIL 2016.
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.5.1.3968

Abstract

Abstract. The issue of mercury pollution in Aceh waters, Indonesiadue to gold mining activities hasbeen a polemic in local media and Aceh Local Government and the communities have much concern on this case. The impact of mercury pollution in the Teunom and Tangse (Aceh)rivers was often assumed that it has similarity with Minamatapollution in Japan. This article intends to enlighten the characteristic mercury either as elements or compounds including methyl mercury which is highly toxic. Gold mining using elemental mercury is poorly soluble in water, the solubility is only 0.06 g per ton of mercury but the solubility can increase indark the sea-bed and ina lot of dissolved oxygen. Based on the properties of solubility, it is understood that the mercury levels in the Teunom and Tangse rivers still below the tolerance limit, but the gold mining activities still bringsthe risk of environmental damage especially inadequate supervision. Many researchers were trying to prove the natural conversionfrom mercury into methyl mercury (biomethylation) but they usedthe salt instead of the elemental mercury in their experiments. Methyl mercury is found in nature, but the process mercury conversion into methyl mercury compound is still controversial and it has not obtained adequate evidence for the natural alteration,therefore gold pollution which is due to releasing elemental mercury into environment might not be analogue to Minamata case.Keywords: Aceh; Methyl-mercury; Minamata; Mining; Gold Abstrak. Informasi pencemaran merkuri di perairan Aceh dan kaitannya dengan aktivitas pertambangan emas telah menjadi polemik sehingga menjadi perhatian Pemda Aceh dan Masyarakat. Dampak pencemaran merkuri di Sungai Teunom dan Tangse sering dianalogikan dengan kasus pencemaran merkuri di teluk Minamata, Jepang. Artikel ini bermaksud memberi pencerahan kharakteristik merkuri baik sebagai unsur maupun sebagai senyawa seperti metil merkuri yang sangat beracun. Penambangan emas menggunakan unsur merkuri yang sukar larut dalam air, kelarutannya hanya 0,06 g per ton unsur merkuri  namun kelarutannya dapat meningkat jika di dasar laut yang gelap dan banyak oksigen terlarut. Berdasarkan sifat kelarutannya, dapat dipahami bahwa kadar merkuri di Sungai Teunom masih di bawah batas toleransi, namun aktivitas penambangan emas tetap saja memiliki resiko kerusakan lingkungan apalagi jika tidak mendapat pengawasan yang memadai. Banyak peneliti berusaha membuktikan perubahan merkuri menjadi metil merkuri (biometilasi) tetapi mereka menggunakan garam merkuri dan bukan unsur merkuri dalam ekperimen mereka. Metil merkuri memang ditemukan di alam tetapi proses perubahan dari senyawa merkuri menjadi metil merkuri masih diperdebatkan dan belum diperoleh bukti yang kuat perubahan dari unsur merkuri menjadi metil merkuri dalam air sehingga di Peraian Aceh belum tentu tercemar metil merkuri sebagaimana kasus Minamata.Kata kunci: Aceh; metil-merkuri; minamata; penambangan; emas

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