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Agus Alim Hakim
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COJ (Coastal and Ocean Journal)
Published by Institut Pertanian Bogor
ISSN : -     EISSN : 25498223     DOI : https://doi.org/10.29244/COJ.5.1
Core Subject : Agriculture, Social,
Agriculture, Biological Sciences & Forestry Environmental Science Social Sciences
COJ (Coastal and Ocean Journal) memiliki ISSN Online: 2549-8223 adalah Jurnal yang dikelola oleh Pusat Kajian Sumberdaya Pesisir dan Lautan, Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM), IPB University, dengan tujuan menyebarluaskan informasi tentang perkembangan ilmiah bidang pengelolaan wilayah pesisir dan lautan di Indonesia. Yang dimaksud dengan perkembangan ilmiah, pengelolaan, inovasi dan teknologi bidang pesisir dan lautan di Indonesia antara lain: Pengelolaan Perikanan, Pengolahan Hasil Laut, Bioteknologi Kelautan, Pengelolaan Sumberdaya Perairan, Pengelolaan Sumberdaya Pesisir dan Lautan, Pemetaan Wilayah Pesisir dan Laut, Hukum dan Sosial Ekonomi Wilayah Pesisir dan Laut, Sistem Sosial dan Ekologi Pesisir dan Lautan, Jasa Ekosistem Pesisir dan Lautan, Konservasi Sumberdaya Pesisir dan Laut serta Pengendalian Pencemaran Lingkungan Pesisir dan Lautan. Berdasarkan Surat Keputusan ISSN LIPI bahwa Coastal and Ocean Journal telah terdaftar dalam ISSN online dengan Nomor SK no. 0005.25498223/JI.3.1/SK.ISSN/2017.03 - 8 Maret 2017. Naskah yang masuk ke COJ akan dicek mengenai pedoman penulisannya oleh Administrasi, apabila sudah sesuai akan direview oleh 1 (satu) orang Dewan Penyunting dan 1 (satu) orang Mitra Bestari (Peer-Reviewer) berdasarkan penunjukan dari Ketua Dewan Penyunting. Keputusan diterima atau tidaknya suatu naskah menjadi hak dari Ketua Dewan Penyunting berdasarkan atas rekomendasi dari Dewan Penyunting dan Mitra Bestari. Jurnal COJ terbit 2 kali dalam 1 tahun (Juni dan Desember) Focus and Scope Pengelolaan Perikanan Pengolahan Hasil Laut Bioteknologi Kelautan Pengelolaan Sumberdaya Perairan Pengelolaan Sumberdaya Pesisir dan Lautan Pemetaan Wilayah Pesisir dan Lautan Kebijakan dan Ekonomi Wilayah Pesisir dan Lautan Sistem Sosial dan Ekologi Pesisir dan Lautan Jasa Ekosistem Pesisir dan Lautan Konservasi Sumberdaya Pesisir dan Lautan Pengendalian Pencemaran Lingkungan Pesisir dan Lautan
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Ilmu Lingkungan (Lain-Lain)
Articles 88 Documents
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PEMODELAN SEBARAN TOTAL SUSPENDED SOLID (TSS) DARI PEMBUANGAN LIMBAH PENGEBORAN DI LAUT NATUNA UTARA Ari Gunawan Wardhana; Santoso
Coastal and Ocean Journal (COJ) Vol 7 No 1 (2023): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v7i1.44738

Abstract

Dumping of drilling waste (cutting and used drilling mud) into the sea is predicted to have an impact on sea waters. To predict the distribution of waste in sea waters, a simulation model of the distribution of waste is carried out with the main parameter is Total Suspended Solid (TSS). The source of data for modelling comes from the drilling activities of oil and gas companies in the North Natuna Sea. The model results show an increase in the maximum TSS concentration due to the highest dumping of drilling mud around 60-65 mg/l which occurred in the Transitional Season II during section-1 drilling. Meanwhile, the increase in TSS concentration due to drill cuttings was highest around 5-6 mg/l in the West Season during section-2 drilling. When compared with the seawater TSS quality standard according to PP No. 22 of 2021 Appendix VIII for marine biota (20 mg/l), the TSS concentration due to drilling mud discharge appears to exceed the quality standard at a radius of 50 m from the discharge point, whereas due to drill cutting dumping it is not seen that anything exceeds the quality standard from a radius of 50 m to 500 m from the discharge point. The increase in TSS concentration due to dumping of drilling mud and cuttings at 500 m from outfall in all seasons is far below the quality standard, namely from <0.02 mg/l to <2 mg/l.
STRATEGI PENGUATAN MUTU IKAN DALAM TRANSPORTASI DAN DISTRIBUSI IKAN DI AMBON Maruli, Sampe; Damayanti, Palupi; Solihin, Akhmad; Ahmadi, Nurdin
Coastal and Ocean Journal (COJ) Vol 7 No 1 (2023): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v7i1.45360

Abstract

Mutu ikan merupakan masalah penting dalam menjamin keamanan pangan dan tingginya harga ikan. Namun penurunan mutu ikan terjadi mulai penangkapan hingga ke tujuan pasar/konsumen. Sebagai daerah produsen, Kota Ambon dihadapkan pada tantangan penurunan mutu ikan yang terjadi di semua simpul pelaku usaha perikanan. Penelitian ini bertujuan untuk memetakan alur transportasi dan distribusi pemasaran hasil perikanan serta isu permasalahannya yang berpotensi menurunkan mutu ikan dan merumuskan strategi terkait pengendalian mutu ikan di Kota Ambon. Hasil penelitian mengungkapkan bahwa pasokan ikan di Kota Ambon tidak hanya berasal dari nelayan di kota Ambon, akan tetapi juga berasal dari nelayan-nelayan sekitar yang menjadi penyangga industri perikanan di PPN Ambon. Berdasarkan hal tersebut, perlu dilakukan beberapa strategi, yaitu:: (a) pelaksanaan sosialisasi berkala; (b) pelaksanaan pemantauan berkala; (c) pelaksanaan pelatihan dan bimbingan teknis sistem rantai dingin; (d) kajian penurunan mutu ikan pada tiap simpul; (e) kerjasama multi pihak; (g) bantuan sarana rantai dingin; dan (h) pembangunan pabrik es. Kata Kunci: Mutu ikan, Keamanan pangan, Harga ikan, Pasokan ikan
PENDUGAAN PARAMETER POPULASI IKAN CAKALANG (Katsuwonus Pelamis) DI PERAIRAN SENDANGBIRU, JAWA TIMUR Boer, Mennofatria; Baskoro, Mulyono S; Afiyatus sholihah
Coastal and Ocean Journal (COJ) Vol 7 No 1 (2023): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v7i1.42001

Abstract

Cakalang merupakan ikan yang dominan tertangkap di Perairan Sendangbiru. Kajian ini menjadi penting sebagai dasar pengelolaan perikanan agar stok ikan cakalang dapat dimanfaatkan secara berkelanjutan. Penelitian ini bertujuan untuk menduga parameter populasi ikan cakalang (Katsuwonus pelamis) meliputi pola pertumbuhan, distribusi panjang ikan, parameter pertumbuhan, mortalitas dan tingkat ekspolitasi. Sampel ikan cakalang diambil dari tempat pendaratan ikan (TPI) Pondokdadap pada bulan Juli sampai Oktober 2019 dengan menggunakan metode purposive sample. Jumlah ikan contoh sebanyak 1431 ekor. Data panjang bobot diolah dengan menggunakan software ms. excel 2013 untuk mengetahui pola pertumbuhannya. Data ditribusi panjang diolah dengan software ms. excel 2013 untuk mengetahui ukuran ikan yang dominan tertangkap. Data frekuensi panjang cakalang kemudian diolah dengan menggunakan program FiSAT II untuk menduga parameter pertumbuhan, mortalitas dan laju ekploitasi. Hasil dari penelitian menyatakan bahwa cakalang yang tertangkap diperairan Sendangbiru memiliki pola pertumbuhan allometrik positif dengan ukuran ikan yang dominan tertangkap sebesar 42 cmFL. Panjang asimtotik (L∞) 87.65 cmFL, laju pertumbuhan (K) 0.69 per tahun, t0 sebesar -0.17 per tahun. Mortalitas alami (M) 0.93 per tahun, mortalitas tangkapan (F) 1.25 per tahun dan mortalitas total (Z) 2.18 per tahun. Sedangkan tingkat ekploitasi (E) cakalang di perairan Sendangbiru diduga sebesar 0.57.
BIOACTIVE COMPOUNDS, PHENOL CONTENT AND ANTIOXIDANT ACTIVITY OF TROPICAL SEAGRASS Halodule pinifolia Santoso, Joko; Purwaningsih, Sri; Ramadhan, Wahyu; Noveliyana, Yulista
Coastal and Ocean Journal (COJ) Vol 7 No 2 (2023): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v7i1.47784

Abstract

Lamun yang hidup di daerah pasang surut terpapar cahaya matahari yang kuat, suhu dan kekeringan dalam hidupnya yang dapat menyebabkan meningkatnya produksi spesies radikal reaktif. Dalam rangka mempertahankan kelangsungan hidupnya, lamun tersebut kemungkinan memproduksi senyawa bioaktif dan kandungan komponen gizi dan non-gizinya dapat berubah. Pada penelitian ini, lamun tropis Halodule pinifolia diperoleh dari pantai Pangumbahan Sukabumi Indonesia dievaluasi potensi kandungan zat gizi dan komponen antioksidan alami. Lamun segar H. pinifolia mengandung abu, protein dan lemak berturut-turut 14,89; 9,74 dan 2,13 g/100 g basis kering; sedangkan kandungan serat pangan larut dan serat pangan tidak larut masing-masing 12,84 dan 27,23 g/100 g basis kering. Kandungan tertinggi total fenol ditemukan pada ekstrak etil asetat (0.31 mg GAE/g basis kering), diikuti ekstrak metanol dan heksana masing-masing sebesar 0.18 dan 0.12 mg GAE/g basis kering. Ekstrak etil asetat juga mempunyai aktivitas penangkapan radikal DPPH tertinggi yang diukur dengan nilai IC50 yaitu 214,38 ppm dibandingkan dengan ekstrak methanol dan heksana. Kesemua ekstrak mengandung komponen bioaktif steroid, flavonoid dan fenol hidroquinon; sedangkan triterpenoid hanya ditemukan pada ekstrak heksana.
DINAMIKA TEMPORAL DAN SPASIAL FOSFAT(PO4-P) DAN NITRAT (NO3-N) SEBAGAI INDIKATOR KESUBURAN PERAIRAN DI TELUK JAKARTA Amanah Zakiah; Yonvitner; Ario Damar
Coastal and Ocean Journal (COJ) Vol 7 No 1 (2023): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v7i1.49454

Abstract

Jakarta Bay is located on the north coast of Java Island and is the mouth of 13 major rivers in Jakarta, Bogor, Depok, Tangerang and Bekasi. Various activities that involve the use of waters, both bays and rivers, can cause a decrease in water quality and nutrient enrichment. One result of nutrient enrichment is an increase in nutrients such as phosphate and nitrate. This study aims to determine the pattern of spatial distribution of phosphate and nitrate concentrations as indicators of water fertility in Jakarta Bay. Water quality monitoring was carried out from 2012-2019 from 23 observation stations. The determination of 23 stations is based on the representation of the Jakarta Bay area into the coastal zone and the bay zone. Water fertility status based on phosphate nutrients is classified as mesotrophic with a spatial distribution pattern that is higher around the coast and lower as it approaches the mouth of the bay. Meanwhile, based on nutrient nitrate, it is classified as oligotrophic with a distribution that tends to be high on the beach and low near the mouth of the bay. Temporally, there is a significant difference in the concentration of phosphate and nitrate.
DNA BARCODING UNTUK VALIDASI SPESIES PAUS SPERMA (Physeter macrocephalus LINNAEUS, 1758) DARI PERAIRAN LAUT SAWU, NUSA TENGGARA TIMUR, INDONESIA Hakim, Agus Alim; Rahayu, Endah Sri; Mashar, Ali; Butet, Nurlisa Alias; Wardiatno, Yusli; Kamal, Mohammad Mukhlis
Coastal and Ocean Journal (COJ) Vol 7 No 1 (2023): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v7i1.49702

Abstract

Paus sperma (Physeter macrocephalus) merupakan salah satu biota laut yang dilindungi di Indonesia. Identifikasi molekuler paus sperma dari perairan Laut Sawu (Nusa Tenggara Timur, Indonesia) telah dilakukan menggunakan gen 16S rRNA. Penelitian ini bertujuan untuk menvalidasi spesies paus sperma (Physeter macrocephalus) di Indonesia menggunakan gen cytochrome oxidasesubunit I (COI) parsial. Spesimen yang digunakan merupakan spesimen jaringan dari koleksi laboratorium yang diambil dari perairan Laut Sawu tahun 2014. Ketiga spesimen tervalidasi sebagai Physeter microcephalus dengan kemiripan sebesar 100%. Komposisi basa didominasi oleh basa timin (31,7-31,8%) dengan GC konten sebesar 42,7–42,8%. Jarak genetik pada spesies yang sama didapatkan nilai sebesar 0,0015, sedangkan jarak genetik tertinggi dengan spesies Orcaella brevirostris sebesar 0,2128. Identifikasi molekuler menggunakan gen 16S rRNA dan COI telah menvalidasi spesies paus sperma (Physeter macrocephalus) di Indonesia, sehingga data genetik ini dapat digunakan sebagai dasar pengelolaan dan konservasi sumberdaya paus sperma.
Indonesia's Concrete Efforts to Ensure Australia's Accountability for Marine Pollution Resulting from the Montara Oil Spill Latisha, Najwa; Syahda Mauldiyani; Retno Hariarti; Irwan Triadi
Coastal and Ocean Journal (COJ) Vol 8 No 2 (2024): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v8i2.55481

Abstract

The marine pollution caused by the Montara oil spill in Australian waters have posed significant challenges to the marine environment, particularly affecting Indonesian waters. This issue remains unresolved as Australia has yet to fulfill its obligations under the provisions of the 1982 United Nations Convention on the Law of the Sea (UNCLOS). This study aims to examine Indonesia's firm and concrete measures to hold Australia accountable for the environmental and economic impacts of the pollution, as well as the appropriate forms of accountability that Australia should undertake in response to Indonesia's claims. This research employs a normative legal methodology, also known as library research, utilizing a legislative approach and an analysis of relevant legal regulations. The results indicate that Indonesia can pursue a combination of diplomatic initiatives, legal actions through international judicial bodies, and expressly acknowledge the economic and political challenges and in compelling Australia's compliance with its obligations. Indonesia should emphasize Australia's accountability by invoking international legal provisions that mandate appropriate compensation for the affected regions and stakeholders. By leveraging an analysis of diplomacy, regional cooperation, and legal approach, this study contributes to a deeper understanding of international legal frameworks and strategies for addressing environmental harm and preserving the sustainability of global marine environment.
Konsentrasi dan Emisi Gas Karbondioksida (CO2) pada Sedimen Ekosistem Mangrove Desa Nania, Kota Ambon Dhandi; Tuahatu, Juliana W.; Krisye; Rahman
Coastal and Ocean Journal (COJ) Vol 8 No 1 (2024): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v8i1.55723

Abstract

Mangrove ecosystem is a type of coastal ecosystem that has many benefits from both ecological, social and economic aspects. The role of mangroves in absorbing carbon reaches 965 tons C/ha. The ability to store carbon is four times more than other ecosystems. Besides absorbing and storing carbon, mangroves also release carbon through litter production. The production of mangrove litter will then experience decomposition resulting in a flux of greenhouse gases. One of the greenhouse gases that triggers climate change is carbon dioxide (CO2). The aim of this research was to determine the concentration and emission values of carbon dioxide (CO2) in the sediments of the mangrove ecosystem of Nania Village, Ambon City. Gas sampling using a syringe through a syringe mounted on a hood. Analysis of gas concentrations used the gas chromatography method. Sediment sampling is carried out using a small shovel on the surface of the substrate under the mangrove canopy. Sediment samples will be analyzed using a sieving process. The results showed that the average concentration of CO2 gas with the highest value in the sandy mud substrate with a value of 701.61 ppm and the lowest in the sand substrate with a value of 561.48 ppm. The largest CO2 gas emission in the mangrove ecosystem sediments of Nania Village was found in the sand sediment type of 75.0535 mg/m2/hour with an emission value, and the lowest was found in mud sediments, namely 30.1899 mg/m2/hour.
Performance Enhancement of Microbial Fuel Cells from Fishery Wastewater Using Boost Converter Device Ibrahim, Bustami; Uju; Subrata, I Dewa Made; Ramadhan, Rahmat Agung
Coastal and Ocean Journal (COJ) Vol 8 No 2 (2024): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v8i2.55742

Abstract

Electricity is a fundamental need in daily life. Fossil energy is commonly used to generate electricity; however, as a non-renewable resource, it will eventually be depleted without innovations involving renewable energy. Fishery wastewater can generate electricity using the Microbial Fuel Cell (MFC) system. However, the electricity produced is relatively low. This study aims to increase the electrical voltage generated from pindang fish wastewater in an MFC system by integrating a boost converter circuit. The research was conducted using five MFC systems connected in series and linked to a boost converter. The electrical output of the MFC system with the boost converter circuit showed a voltage of 12.13±0.87 V, a current of 0.86±0.20 mA, and a power output of 10.50±3.11 mW. In contrast, the system without the boost converter produced a voltage of 2.24±0.26 V, a current of 0.17±0.03 mA, and a power output of 0.38±0.11 mW. The increase in electricity output demonstrates the functionality of the boost converter circuit. Additionally, the MFC system effectively reduced BOD, COD, and TAN values in the fishery wastewater.
The Urban Coastal Settlement Management Strategy of Bumi Waras Sub-District, Bandar Lampung Putri, Septi Malidda Eka; Wahono, Endro P.; Reza, Muhammad; Azkia, Lana Izzul
Coastal and Ocean Journal (COJ) Vol 8 No 2 (2024): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v8i2.55754

Abstract

Indonesia's extensive coastal areas face significant environmental and social challenges, particularly in densely populated regions like Bumi Waras Sub-district, emphasizing the urgent need for integrated coastal management to ensure sustainable development and improve community living conditions. This study aims to ascertain the future course of urban coastal settlement management measures. The study was conducted in Bandar Lampung's Bumi Waras Sub-District's coastal region, as the second-highest population sub-district in Bandar Lampung City. The samplings were chosen purposively by expert assessments and the community. Direct interviews were used to collect data, while the SWOT method was used to analyze the result. The results of the Internal Factors Analysis Summary matrix score of 3.167 and the External Factors Analysis Summary matrix at 3.153, indicating fairly good growth conditions. The highest priority strategy, 4.028, was the "weaknesses and threats" (WT) parameter, highlighting the need to address limited community participation in planning, implementing, and supervising coastal area management, as well as the lack of private sector involvement. Therefore, the recommended strategy is to enhance human resource capacity through socialization and counseling on urban coastal settlement management. Additionally, efforts should be directed toward optimizing the utilization of existing facilities and infrastructure to reduce environmental damage and promote sustainable coastal area management.

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