cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Ichsan Setiawan
Contact Email
ichsansetiawan@usk.ac.id
Phone
+6285220189228
Journal Mail Official
depik@usk.ac.id
Editorial Address
Faculty of Marine and Fisheries Universitas Syiah Kuala Jalan Meureubo No. 1, Kopelma Darussalam Banda Aceh, 23111, Indonesia
Location
Kab. aceh besar,
Aceh
INDONESIA
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 944 Documents
 76   77   78   79   80 
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
Penilaian pencemaran logam berat dalam sedimen di Teluk Jakarta Edward Edward
Depik Vol 9, No 3 (2020): December 2020
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.9.3.16800

Abstract

Contamination and pollution of heavy metals in the bottom sediment can pose serious issues to marine organisms and human health. Jakarta Bay which is located adjacent to the capital city of Indonesia is notorious for its pollution problems. The purpose of this research was to assest the contamination levels of heavy metals Hg, Pb, and Cd in sea-bottom sediments based on an index analysis approach (contamination factors, geo accumulation index, pollution load index). Sediment samples were collected from 31 stations in Jakarta Bay. Heavy metal concentration was measured using Atomic Absorption Spectrophotometer (AAS). The results showed that an average mercury (Hg) concentration ranged from 0.150 to 0.530 µg.g-1 with an total average of 0.362 µg.g-1, Lead (Pb) from 14.870 to 35.650 µg.g-1 with an total average of 21.774 µg.g-1, Cadmium (Cd) 0.110-0.280 µg.g-1 with an total average of 0.190 µg.g-1.The average concentration of Hg, Pb, and Cd is still lower than the sediment quality threshold values set by the Office of the State Minister of Environment of Indonesia  2010. The results of the index analysis showed that the average value of contamination factor (CF) are Hg 0.685, Pb 0.558, and Cd 0.380 respectively (low contamination) and geo accumulation index values are Hg 0.237, Pb -1.655, and Cd 0.069 respectively (unpolluted to moderate polluted). Overall, based on the pollution load index value is -0,511 (PLI 1), sediments in these waters are categorized as not yet polluted by Hg, Pb and Cd. This situation  is so necessary to be maintained, that in order for the preservation of marine resources will remain.Keywords: Jakarta Bay, sediment, pollution, heavy metals, assessmentABSTRAKKontaminasi dan pencemaran logam berat pada sedimen dasar dapat menimbulkan masalah yang serius bagi biota laut dan kesehatan manusia. Teluk Jakarta yang terletak berdekatan dengan ibu kota Indonesia terkenal karena masalah pencemarannya yang parah. Tujuan penelitian ini adalah untuk menilai tingkat kontaminasi logam berat Hg, Pb dan Cd dalam sedimen dasar laut berdasarkan pendekatan analisis indeks. Contoh sedimen diambil dari 31 stasiun penelitian di Teluk Jakarta. Kadar logam berat diukur dengan alat Spektrofometer Penyerapan Atom. Hasil penelitian menunjukkan kadar Hg rerata berkisar 0,150-0,530 µg. g-1 dengan rerata total 0,362 µg. g-1, Timbal (Pb) 14,870-35,650 µg. g-1 dengan rerata total 21,774 µg. g-1, Kadmium (Cd) 0,110-0,280 µg. g-1 dengan rerata total 0,190 µg.g-1. Kadar rerata Hg, Pb dan Cd masih lebih rendah dari nilai ambang batas kualitas sedimen yang ditetapkan oleh Kantor Menteri Negara Lingkungan Hidup Indonesia 2010. Hasil analisis indeks menunjukkan nilai rerata faktor kontaminasi (CF) berturut-turut adalah Hg 0,685, Pb 0,352 dan Cd 0,380 (kontaminasi rendah) dan nilai indeks geo akumulasi berturut-turut adalah Hg 0,227, Pb 1,098 dan Cd 0,633 (tidak tercemar sampai tercemar sedang). Secara keseluruhan, berdasarkan nilai indeks beban pencemaran yakni -3.772 (PLI 1), sedimen di perairan ini termasuk kategori belum tercemar oleh Hg, Pb dan Cd. Keadaan ini perlu dipertahankan, agar kelestarian sumberdaya laut tetap terjaga.Kata kunci: Teluk Jakarta, sedimen, pencemaran, logam berat, penilaian
Analisa ekonomi budidaya kerapu macan (Epinephelus fuscoguttatus) dan kerapu bebek (Cromileptes altivelis) dalam keramba jaring apung di Indonesia Afero, Farok
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 1, No 1 (2012): April 2012
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.1.1.18

Abstract

Abstract. This study presents an economic analysis of tiger and humpback grouperat different production scales in Indonesia. The results highlight the nonviabilityof small scale tiger grouper, with a 5 years projected negativecumulative cash flow of Rp. 18.102.650 and a negative net present value (NPV)of Rp. 22.059.576. An increasing production scale of tiger grouper highlight amarginal viability for medium scale (with a 5 year projected cumulative cashflow of Rp. 198.320.673 and a positive NPV of Rp. 105.578.440; with a benefitcost ratio of 1,25; an internal rate of return (IRR) of 88%; and a paybackperiod of 0,99 year), and an economically viable of large scale cage culture(with a 5 year projected cumulative cash of Rp. 707.746.923; a NPV of Rp.406.801.749; a benefit cost ratio of 1,33;an internal rate of return of 157%;and a payback period of 0,57 year). The economic analysis of humpback grouper atdifferent production scales highlight positive cumulative cash, a positive NPV,a benefit cost ratio higher than 2, an internal rate of return over 300% and apayback period of less than one year. A sensitivity analysis revealed thatincreased survival rate up to 80% would increase cumulative cash and NPV ofsmall scale tiger grouper cage culture. Additionally, improved profitabilityperformance was associated with decreased major production costs, increasedproduction and price of the product.Nikmati pengalaman bermain slot zeus, grafis epik dan fitur bonus hadir untuk meningkatkan peluang kemenangan.
Analisis kebijakan peningkatan efektivitas pemberian bantuan dana Pengembangan Usaha Mina Pedesaan (PUMP) pada kelompok nelayan di Kota Banda Aceh Elfa Yeni; Agus Naufal
Depik Vol 7, No 1 (2018): April 2018
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.7.1.8838

Abstract

The objective of the study was to analyze the policy of increasing the effectiveness of providing PUMP funds to fishermen groups in Kota Banda Aceh. Mina Rural Business Development Program (PUMP) was one of the models developed by the Ministry of Marine Affairs and Fisheries to overcome poverty for coastal communities. From the previous research data, it was known that PUMP funding is considered ineffective because there were still many people who did not benefit from this PUMP fund and the improper use of PUMP funds targeted by beneficiary communities. To improve the effectiveness of PUMP funding, it was necessary to do in the policy analysis on the effectiveness of this PUMP fund. Analysis Hierarchy process (AHP) was used to look at the policies to be used for the effectiveness of PUMP grants. The method of collecting data was the interview or deep interview with policymakers in DKP Aceh Province, with NGOs and academics in Banda Aceh. The Results of Analysis Hierarchy process shows the criteria that mainly influence the increasing effectiveness of PUMP funding assistance to the fishermen economy are human resources, followed by time and human resources. While the policy priority of increasing the effectiveness of PUMP funding to the fishermen economy is to increase the capacity of the fishermen's supervisor, followed by management financial training of fishermen and intensively monitoring post-aid activities.Penelitian ini bertujuan untuk menganalisis kebijakan peningkatan efektivitas pemberian bantuan dana PUMP pada kelompok nelayan di Kota Banda Aceh. Program Pengembangan Usaha Mina Pedesaan (PUMP) merupakan salah satu model yang dikembangkan oleh Dirjen Perikanan Kelautan (DKP) untuk menggulangi kemiskinan bagi masyarakat pesisir. Dari data penelitian sebelumnya, diketahui bahwa bantuan dana PUMP ini dinilai tdak efektif karena masih banyaknya masyarakat yang tidak memperoleh manfaat dari dana PUMP ini dan penggunaan dana PUMP yang tidak tepat sasaran oleh masyarakat penerima bantuan. Untuk meningkatkan efektivitas pemberian dana PUMP tersebut maka perlu dilakukan di analisa kebijakan tentang efektivitas pembarian dana PUMP ini. Analisis Hirarki Proses digunakan untuk melihat kebijakan yang akan digunakan untuk efektivitas pemberian dana PUMP. Metode pengambilan data adalah wawancara atau deep interview dengan pengambil kebijakan yang ada di DKP Provinsi Aceh, dengan LSM yang ada di banda Aceh serta dengan pihak akademisi yang ada di Banda Aceh. Hasil yang didapat adalah Hasil Analisis Hirarki Proses menunjukkan kriteria yang paling mempengaruhi peningkatan efektivitas pemberian bantuan dana PUMP terhadap perekonomian nelayan adalah kriteria sumberdaya manusia, kriteria waktu dan kriteria SDM. Sedangkan prioritas kebijakan peningkatan efektivitas pemberian bantuan dana PUMP terhadap perekonomian nelayan adalah peningkatan kapasitas tenaga pembimbing diurutan pertama, diikuti pelatihan manajemen pengelolaan keuangan nelayan dan pemantauan secara intensif kegiatan pasca penyaluran bantuan. Sedangkan kriteria yang paling mempengaruhi peningkatan efektivitas pemberian bantuan dana PUMP terhadap perekonomian nelayan adalah kriteria sumberdaya manusia, kriteria waktu dan kriteria SDM. 
Potensi dampak pemanasan global terhadap reproduksi crustacea: suatu tinjauan kepustakaan ringkas Neri Kautsari
Depik Vol 3, No 3 (2014): Desember 2014
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.3.3.2148

Abstract

The aims of the present paper were to evaluate the potential impacts of climate change on reproduction of crustacea. Climate change has given an impact on water quality, especially temperature changes and pH reduction. The increase in temperature due to climate change was expected affect on reproductive of crustacea including the sex ratio atio, reproductive cycle, gametogenesis and increased enhancement effects of pesticides that can interfere with reproduction of Crustacea. This paper provides the impact of climate changes on the productive of crustacea the important aqauatic organism on the food chains.
Microhabitat association and population status of the Luwuk introduced Banggai cardinalfish (Pterapogon kauderni Koumans, 1933) population Novalina Serdiati; Abdul Gani; Deddy Wahyudi; Abigail Mary Moore; Samliok Ndobe
Depik Vol 10, No 3 (2021): December 2021
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.10.3.23501

Abstract

The Banggai cardinalfish Pterapogon kauderni is the Indonesian national marine ornamental fish mascot, and an object of national and international conservation concern. The endemic population of this species is limited to the Banggai Archipelago in Central Sulawesi, Indonesia and a few nearby islands in North Maluku. In addition, introduced populations have become established, mainly along ornamental fish trade routes. The National Action Plan for Banggai Cardinalfish Conservation (NAP-BCFC) calls for monitoring and management of all P. kauderni populations. A survey of the Luwuk introduced P. kauderni population was carried out in October 2021.   Data were collected at three sites with established P. kauderni populations: the ferry harbour, public harbour (Teluk Lalong) and a recreational area on the nearby coast (Kilo 5). P. kauderni were recorded by microhabitat association and size class (recruits, juveniles, adults). Data collected were compared with data from previous surveys where available. With the exception of one group in a sea anemone at Kilo 5, all P. kauderni were associated with Diadema sea urchins (D. setosum at all sites; D. savignyi at Kilo 5). At Kilo 5 P. kauderni the population structure indicates the possible capture of market-sized juveniles. Overall abundance was also lower compared to the polluted but unfished harbours. The proportion of recruits was significantly negatively correlated with the ratio of adult P. kauderni to Diadema urchins. The results will inform regional legislation currently in preparation to support sustainable management of P. kauderni populations, habitat and microhabitat in Central Sulawesi, as well as contributing to NAP-BCFC targets.Keywords:Banggai cardinalfishEndangered speciesDiademaMicrohabitat,MonitoringOrnamental fisheryLocal regulation
Fitoremediasi limbah budidaya sidat menggunakan filamentous algae (Spirogyra sp.) Tri Apriadi; Niken TM Pratiwi; Sigid Hariyadi
Depik Vol 3, No 1 (2014): April 2014
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.3.1.1282

Abstract

Abstrak. Penelitian ini bertujuan untuk mengetahui potensi dari filamentous algae (Spirogyra sp.) sebagai agen bioremediasi dalam mereduksi kandungan bahan organik limbah budidaya sidat. Penelitian menggunakan rancangan acak lengkap dengan perlakuan perbedaan dosis limbah (25 %, 50 %, 75 %, 100%).  Wadah penelitian berupa akuarium resirkulasi menggunakan sistem carrousel. Dilakukan pengukuran secara rutin terhadap beberapa parameter kualitas air serta perubahan bobot Spirogyra sp. selama dua minggu retensi. Diperoleh hasil bahwa penurunan konsentrasi bahan organik menggunakan Spirogyra sp. berlangsung efektif hingga hari keenam. Spirogyra sp. mampu mentolelir limbah budidaya sidat pada dosis limbah 25% dan 50%. Spirogyra sp. pada perlakuan dosis limbah 50% memiliki kemampuan yang lebih baik dalam menurunkan bahan organik limbah budidaya sidat.Kata kunci : Bahan organik; Limbah budidaya sidat; Spirogyra sp.
Komunitas Echinodermata di kawasan intertidal Pantai Mandalika Pulau Lombok, Indonesia Imam Bachtiar; I Wayan Merta; Kusmiyati Kusmiyati; AR Syachruddin
Depik Vol 9, No 2 (2020): August 2020
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.9.2.13582

Abstract

Echinoderm community was studied at the Mandalika Beach which is the main habitat of nyale worms in the southern coast of Lombok Island, from July to September 2017. The aim of study was to describe community structure of Echinoderm fauna and population structure of predominant species. Data on species richness and its abundance were collected using transect-quadrate methods. Five transects were laid haphazardly seaward that may represent the whole reef flat with about 200 m length and 100 m wide.  On every 10 meter along the transect length a 5x1 m2 quadrate was made, that overall there were 44 quadrates. The results showed that only eight species of Echinoderms found in the quadrate samples, i.e. sea urchin Echinometra mathaei (Echinoidea), and brittle stars, Ophiocoma scolopendrina, O. echinata, O. erinaceus, Ophiomastix annulosa and Ophioderma sp. (Ophiuroidea). Two other Echinoidea were also found outside the quadrates, i.e. Echinothrix calamaris and Diadema setosum. Simpson diversity index (D) was 1,243, eveness index (E) was 4,023, Shanon-Winner diversity index (H) was 0,430 and equatibility index (J) was 0,267. Sea urchin E. mathaei was the most predominant population (89,38% of total composition) with average abundance 11,87±22,37 individual m2. Brittle star O. scolopendrina come the second predominant population (7,31%) with average abundance 0,86±2,43 individual m2. The other four brittle stars had very low proportion (2%) and low abundance ( 0,20  individual m2). Population stucture showed that these two populations mostly consisted of reproductive members. Ecological interactions of these two predominant Echinoderms should be studied in more detail on interactions among of the Echinoderms and nyale worms. Keywords: Ophiocoma, Echinometra, Nyale, Lombok Tengah, population structure ABSTRAKPenelitian komunitas Echinodermata dilakukan di Pantai Mandalika yang menjadi habitat utama cacing nyale, pada bulan Juli-September 2017. Penelitian ini bertujuan mendeskripsikan struktur komunitas Echinodermata dan struktur populasi spesies yang dominan. Data kekayaan spesies dan kelimpahan diambil dengan metode transek kuadrat. Lima transek diletakkan tersebar ke arah laut pada pantai yang panjangnya sekitar 200 m dan lebar 100 m tersebut. Setiap titik 10 meter pada transek dibuat kuadrat ukuran 5 m2, dengan jumlah kuadrat sampel seluruhnya 44 kuadrat. Hasil penelitian menunjukkan bahwa komunitas Echinodermata mempunyai kekayaan spesies yang rendah di Pantai Mandalika. Organisme Echinodermata yang dijumpai hanya 8 (delapan) spesies, yaitu landak laut Echinometra mathaei (Echinoidea), serta lima jenis bintang mengular, Ophiocoma scolopendrina, O. echinata, O. erinaceus, Ophiomastix annulosa dan Ophioderma sp. (Ophiuroidea). Di luar kuadrat tercatat dua jenis landak laut lainnya, yaitu Echinothrix calamaris dan Diadema setosum, dengan kelimpahan yang sangat rendah. Indeks-indeks komunitas pada umumnya rendah. Indeks diversitas Simpson (D) 1,243, indeks keseragaman (E) 4,023, indeks keanekaragaman spesies Shanon-Winner (H) 0,430 dan indeks kesetaraan (J) 0,267. Landak laut E. mathaei sangat dominan (89,38%) dengan kelimpahan rata-rata 11,87±22,37 individu m-2 di dalam komposisi komunitas Echinodermata. Bintang mengular O. scolopendrina menempati urutan dominansi kedua (7,31%) dengan kelimpahan rata-rata 0,86±2,43 individu m-2, sedangkan empat bintang mengular lainnya mempunyai proporsi kurang dari 2% dan kelimpahan rata-rata kurang dari 0,20  individu m-2. Struktur populasi E. mathaei dan O. scolopendrina menunjukkan bahwa sebagian besar anggota populasi mempunyai ukuran reproduktif. Kehadiran hewan Echinodermata tersebut di habitat cacing nyale (Eunicidae, Polychaeta) menuntut penelitian lanjutan tentang peran ekologis dari masing-masing hewan Echinodermata dan interaksinya dengan cacing nyale.Kata kunci: Ophiocoma, Echinometra, Nyale, Lombok Tengah, Struktur populasi
Struktur komunitas dan pemetaan ekosistem mangrove di pesisir Pulau Maitara, Provinsi Maluku Utara, Indonesia Nebuchadnezzar Akbar; Nasir Haya; Abdurrachman Baksir; Zulhan A. Harahap; Irmalita Tahir; Yunita Ramili; Raismin Kotta
Depik Vol 6, No 2 (2017): August 2017
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.6.2.6402

Abstract

Mangrove is ecosystem important in coastal area. Human exploited make decrease habitat mangroves ecosystem. The highly activity in this area threaten quantity ecology ecosystem mangroves.The objective of the present study was to examine the ecological indices and mapping of mangrove in coastal region on Maitara Island, North Moluccas.Information about that most important for sustainable mangrove management. The results showed that mangroves composition found that 4 specieses belong to 3 families.total density of stations namely 215.78 tree/hectare, frequency 722.22 tree/hectare, percent cover 189.29% and significantion value 300 every stations. The density and frequency highest of species found Rhizopora apicullata, Avicennia alba, Sonneratia alba. The density and frequency lowest Sonneratia caseolaris. The percent cover highest types derived Sonneratia alba, Sonneratia caseolaris, Avicennia alba and percent lowest is Sonneratia caseolaris. Overall the ecological index analysed diversity of mangroves found is minor. The characterize mangrove zonation that Rhizhopora Sp is aleadingconstituentof mangrove ecosystem from coast to land inthe Maitara Island. Extensivemangroveobtained fromfieldclassificationandmapping resultsof4.91hectares. Correctionfield data andpreviousliterature studiesindicatedthere have been adecline inmangroveareaat1.09during 3 years.The overall necessaryapproaches to conservationandsustainable managementofmangroveecosystem andconservation interestson the Maitara Island. Mangrove merupakan ekosistem penting di daerah pesisir.Meningkatnya exploitasi manusia menurunkan habitat ekosistem mangrove. Tingginya aktivitas mengancam kuantitas ekologi ekosistem mangrove.Tujuan penelitian ini untuk melihat struktur komunitas dan pemetaan ekosistem mangrove. Pengambilan data mangrove dilakukan pada tahun 2015. Hasil penelitian menemukan bahwa komposisi jenis mangrove yang ditemukan terdiri dari 3 family dengan 4 spesies. Total keseluruhan kerapatan stasiun yaitu 215.78 batang/hektar, frekuensi 722.22 batang/hektar, tutupan 189.29% dan nilai penting 300 tiap stasiun. Kerapatan dan frekuensi jenis tertinggi ditemukan Rhizopora apicullata, kemudian Avicennia alba, disusul Sonneratia alba dan terendah Sonneratia caseolaris. Tutupan jenis tertinggi diperoleh jenis Sonneratia alba, kemudian Sonneratia caseolaris, disusul  Avicennia alba dan terendah Rhizopora apicullata. Nilai penting tertinggi pada jenis Sonneratia alba, kemudian Rhizopora apicullata, setalah itu Avicennia alba dan terendah adalah jenis Sonneratia caseolaris. Secara umum keseluruhan indeks nilai keanekaragaman jenis mangrove di Pulau Maitara yang diperoleh rendah. Tipe zonasi yang ditemukan bahwa jenis Rhizhopora Sp merupakan penyusun terdepan  hutan  mangrove dari arah laut ke daratan di Pulau Maitara.Luas mangrove yang didapat dari klasifikasi lapangan dan hasil pemetaan sebesar  4.91 hektar. Koreksi data lapangan dan studi literature sebelumnya mengindikasikan telah terjadi penurunan luas mangrove sebesar 1.09 Ha dengan rentan 3 tahun. Sehingga diperlukan pendekatan konservasi dan pengelolaan berkelanjutan untuk kepentingan pelestarian hutan mangrove di Pulau Maitara. 
Selection and cultivation of seaweed Kappaphycus alvarezii using a long line system (outdoor) Satriani, Gloria I.; Soelistyowati, Dinar Tri; Alimuddin, Alimuddin; Arfah, Harton; Effendi, Irzal
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 12, No 3 (2023): DECEMBER 2023
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.12.3.30211

Abstract

In outdoor cultivation at Amal Beach, three seeding mass selections were reared for 30 days for each cycle. Each variety had a different DGR %/day (Daily Growth Rate %/day) value at the end of the growing season on G1-G2-G3 ranging from 3.62-5.90 %/day, which were still categorized as good, and G3 var.Lampung had the highest DGR value. Carrageenan yield values in this study, G1 to G3, ranged from 23.16% to 45.87%, where the G3 G2 G1 treatment. The best thallus samples (20% were selected for each generation) resulted in carrageenan yield sample population in each variety, where var.Lampung var.Tarakan var.Kupang. The biplot analysis shows that the DGR variable vector coincides with the IAA, Phosphate, Gibberellin, and Ammonia vectors. Ammonia stepwise regression analysis (sig) affects DGR with an Ammonia coefficient value of 4.89; meaning that for each increase in the Ammonia value by one unit, the estimated mean value of DGR will increase by 4.89. Thus, the application of themassbased on the results of this study was able to increase the DGR valueKappaphycus alvarezii,which in turn produce the highest yield of carrageenan withK. alvareziivar.Lampung G3 was the best seed candidate to be developed at the seaweed cultivation site in Tarakan City.Keywords:AlgaePhytohormonesCarrageenanNitrogenViscosity

Page 78 of 95 | Total Record : 944

 76   77   78   79   80 

Filter by Year

2012 2025


Reset
Filter By Issues
All Issue Vol 14, No 4 (2025): December 2025 Vol 14, No 3 (2025): SEPTEMBER 2025 Vol 14, No 2 (2025): JUNE 2025 Vol 14, No 1 (2025): MARCH 2025 2025: Special Issue ICFM Vol 13, No 3 (2024): DECEMBER 2024 Vol 13, No 2 (2024): AUGUST 2024 Vol 13, No 1 (2024): APRIL 2024 Vol 12, No 3 (2023): DECEMBER 2023 Vol 12, No 2 (2023): AUGUST 2023 Vol 12, No 2 (2023): AUGUST 2023 (IN PROGRESS) Vol 12, No 1 (2023): APRIL 2023 Vol 11, No 3 (2022): DECEMBER 2022 Vol 11, No 2 (2022): August 2022 Vol 11, No 1 (2022): April 2022 Vol 10, No 3 (2021): December 2021 Vol 10, No 2 (2021): August 2021 Vol 10, No 1 (2021): April 2021 Vol 9, No 3 (2020): December 2020 Vol 9, No 2 (2020): August 2020 Vol 9, No 1 (2020): April 2020 Vol 8, No 3 (2019): December 2019 Vol 8, No 2 (2019): August 2019 Vol 8, No 1 (2019): April 2019 Vol 7, No 3 (2018): December 2018 Vol 7, No 2 (2018): August 2018 Vol 7, No 1 (2018): April 2018 Vol 6, No 3 (2017): December 2017 Vol 6, No 2 (2017): August 2017 Vol 6, No 1 (2017): April 2017 Vol 5, No 3 (2016): December 2016 Vol 5, No 2 (2016): August 2016 Vol 5, No 1 (2016): APRIL 2016. Vol 4, No 3 (2015): DECEMBER 2015 Vol 4, No 2 (2015): AUGUST 2015 Vol 4, No 1 (2015): APRIL 2015 Vol 3, No 3 (2014): Desember 2014 Vol 3, No 2 (2014): August 2014 Vol 3, No 1 (2014): April 2014 Vol 2, No 3 (2013): December 2013 Vol 2, No 2 (2013): August 2013 Vol 2, No 1 (2013): April 2013 Vol 1, No 3 (2012): December 2012 Vol 1, No 2 (2012): August 2012 Vol 1, No 1 (2012): April 2012 More Issue