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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences BULETIN OSEANOGRAFI MARINA Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Jurnal Pasir Laut Management of Aquatic Resources Journal (Maquares) Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Journal of Degraded and Mining Lands Management Indonesian Journal of Chemical Science JFMR (Journal of Fisheries and Marine Research) Omni-Akuatika Journal of Aquaculture and Fish Health Life Science Makara Journal of Technology Life Science
Max Rudolf Muskananfola
Program Studi Manajemen Sumberdaya Perairan, Departemen Sumberdaya Akuatik Fakultas Perikanan Dan Ilmu Kelautan, Universitas Diponegoro
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering

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Analisis Kesuburan Perairan Berdasarkan Klorofil-a, Nitrat dan Ortofosfat di Pantai Pasir Putih Wates, Kaliori, Rembang Oktaviana, Clarisa Ika; Muskananfola, Max Rudolf; Purnomo, Pujiono Wahyu
Life Science Vol 12 No 1 (2023): May 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/lifesci.v12i1.63819

Abstract

Pantai Wates merupakan salah satu pantai pasir putih yang menjadi tujuan destinasi wisata di Kabupaten Rembang. Tingginya aktivitas manusia di sekitar pantai seperti kegiatan wisata, pemukiman penduduk, pertambakan dan kegiatan industri, dikhawatirkan dapat menyebabkan perubahan kualitas perairan terutama kandungan unsur hara. Unsur hara dalam perairan akan berdampak terhadap kelimpahan fitoplankton dan kandungan klorofil-a. Penelitian ini bertujuan untuk mengetahui kelimpahan fitoplankton, konsentrasi, sebaran, dan hubungan antara klorofil-a, nitrat dan ortofosfat, serta mengkaji status kesuburan perairan di perairan Pantai Wates Kabupaten Rembang. Penelitian dilaksanakan pada bulan April 2022. Metode yang digunakan pada penelitian adalah metode deskriptif. Teknik pengambilan sampel menggunakan metode simple random sampling pada 9 stasiun. Analisis status kesuburan perairan dengan metode TSI dan sebaran konsentrasi variabel dengan metode IDW. Analisis data untuk mengetahui hubungan antar variabel menggunakan regresi linear berganda. Hasil penelitian menunjukkan kelimpahan fitoplankton berkisar antara 1.077-6.042 sel/L. Konsentrasi klorofil-a sebesar 2,117-8,376 µg/L, nitrat sebesar 0,9-1,8 mg/L dan ortofosfat sebesar 0,07-3,79 mg/L dengan sebaran cenderung menurun ke arah laut. Status kesuburan di perairan Pantai Wates termasuk kategori mesotrofik hingga eutrofik. Kelimpahan fitoplankton dipengaruhi oleh nitrat dan ortofosfat sebesar 85,1%dengan korelasi sangat kuat, sedangkan klorofil-a dipengaruhi sebesar 52% dengan korelasi kuat.
Tingkat Pemanfaatan Teripang Ekonomis Penting di Perairan Kepulauan Karimunjawa Amalo, Nancy Marcelina Reinatha; Muskananfola, Max Rudolf; Rudiyanti, Siti
Life Science Vol. 13 No. 2 (2024): November 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/unnesjlifesci.v13.i2.4417

Abstract

Sea cucumbers are an economically important fishery commodity in great demand by both local and international audiences. As time goes by, the need for sea cucumbers increases and people make excessive use of sea cucumber resources until they reach the status of over-exploitation. This makes it necessary to know the level of utilization of sea cucumbers in Karimunjawa. This research was carried out on August - September 2023 in Tanjung Gelam, Karimunjawa. The purpose of this research is to find out the catch per unit effort, maximum sustainable potential/maximum sustainable yield, and the level of utilization of sea cucumbers in Karimunjawa waters. This research uses a survey method with the survey carried out to collect data regarding catches and fishing trips for fishermen directly. The data analysis method uses model calculations Schaefer. From the research results, it was found that the average CPUE production value was 4 kg/trip. The potential MSY value obtained is 2.857 kg/year with an optimum effort (f opt) of 620 trips/year. The level of utilization of sea cucumbers has an average value of 93,27% which is categorized as optimum, so there is no need to make additional efforts because the catch is already optimal and if it is added it will cause an excess catch.  
Length-Weight Relationship and Condition Factor Channa Marulioides (Bleeker, 1851) In Kapuas River – West Kalimantan as a Conservation Aquatic Resources Effort: Length-Weight Relationship and Condition Factor of Channa marulioides Hutagalung, Rizal Akbar; Anggoro, Sutrsino; Suryanti, Suryanti; Muskananfola, Max Rudolf
Journal of Aquaculture and Fish Health Vol. 13 No. 1 (2024): JAFH Vol. 13 No. 1 February 2024
Publisher : Department of Aquaculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jafh.v13i1.49252

Abstract

Channa marulioides is one of the species that is facing a population decrease due to high fishing activity. This study aims to determine the value of the length-weight relationship and condition factors of C. marulioides in the Kapuas River as a relevant conservation effort. Several sampling areas in this study were used to represent the Kapuas River, including Kapuas Hulu River in Kapuas Hulu Regency, Putussibau District; The central part of the waters area of "‹"‹Sintang Regency in Sintang Regency; and in the downstream waters of Pontianak City. The study carried out the sampling by analyzing the criteria for specimens with a dimension weight > 500 grams and length > 30 cm, with the same amount for each sex. The results showed that the growth type in the upper and middle waters was positive allometric with a value of b 3.1; however, it is negative allometric in the middle and upstream waters with b values "‹"‹of 2.5 and 1.7. After research, the condition factor of the upstream and middle waters was observed to be in good condition with a value of 1. However, in the downstream waters the condition of the fish was rather bad with a value below 1, namely 0.99. The study concludes there is a decrease in the quality of the aquatic environment and the food availability from the middle waters to the downstream. This is what underlines conservation efforts in the form of domestication activities within the scope of structured fish farming.
Hydrodynamic Characteristics and Sediment Distribution Patterns in Wulan Delta Estuary, Demak, Indonesia Muskananfola, Max Rudolf; Febrianto, Sigit; Ayuningrum, Diah
Makara Journal of Technology Vol. 27, No. 1
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The Wulan Delta, located in Wedung, Demak, was formed due to the sedimentation process of the Wulan and Serang rivers. Sediment transport starts from rivers to the sea; the process carries nutrients and various chemicals derived from agricultural, industrial, or household activities. This study aims to analyze the characteristics of hydrodynamics, suspended sediment, and bottom sediments in the Wulan Delta waters, Demak. Field data were collected in transitional season two (October) 2022. The obtained data were then analyzed in the laboratory at the Faculty of Fisheries and Marine Science. Results showed that the speed of the surface current in the study area ranged from 0 to 0.1 m/s in spring tide conditions with a surface current pattern coming from the direction of Semarang toward Jepara and 0–0.18 m/s in neap tide conditions with a current pattern coming from the direction of Jepara toward Semarang. The Wulan Delta has a sedimentary characteristic dominated by fine silt, which is as much as 82%–98%, with a deposition characteristic dominated by wave energy that causes successful sediment sorting with a sorting index of −2.25 to 2 and strongly asymmetrical to a small size with a skewness curve value of two.
Spatial–Seasonal Mapping of Estuarine Bed Sediment Texture Under a Natural Mouth-Closure Regime: Evidence from the Kungkai Baru Estuary, Western Indonesia Nofridiansyah, Eko; Hartoko, Agus; Muskananfola, Max Rudolf; Helmi, Muhammad; Adi, Wahyu
JFMR-Journal of Fisheries and Marine Research Vol. 10 No. 1 (2026): JFMR on March
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2026.010.01.10

Abstract

Seasonally closed estuaries are vulnerable coastal systems in which alternating phases of mouth closure and opening strongly influence hydrodynamics, sediment transport, and benthic habitats. The Kungkai Baru Estuary on the wave-dominated western coast of Sumatra, Indonesia, is a small tropical estuary that predictably closes during the west monsoon and re-opens during the east monsoon. Although previous studies have documented major morphodynamic changes and shifts in macrozoobenthic communities between these phases, the associated near-bed sediment dynamics remain insufficiently understood. This study examined spatial and seasonal patterns of bed sediment texture using surface sediment samples collected at 21 stations during closed-mouth and open-mouth conditions and analysed through grain-size distribution and Folk–Ward statistics. Bed sediments were overwhelmingly sandy (>96% sand), but mean grain-size, sorting, and skewness showed clear spatial and seasonal variation. During the closed-mouth season, moderately well-sorted fine to medium sands dominated the middle and upper estuary, indicating reduced marine energy and greater retention of finer material. During the open-mouth season, coarser and more poorly sorted sands occurred near the estuary entrance, reflecting stronger marine influence and more active sediment exchange. These findings align with previously reported longitudinal patterns in macrozoobenthos and provide a sediment-based framework for understanding benthic habitat heterogeneity in seasonally closed tropical estuaries.
Co-Authors - Djuwito - Ruswahyuni - Subiyanto - Supriharyono A'in, Churun A’in, Churun Abiyoga, Reinaldi Adira Rizka Andaris, Adira Rizka Afwa, Rainuy Saninzita Agung Pamuji agung Suryanto Agus Hartoko Amalo, Nancy Marcelina Reinatha Amanina, Farha Tsabita Andri Okfan, Andri Anggoro, Sutrsino Anhar Solichin Aninditia Sabdaningsih Arif Rahman Arif Rahman Arofah, Rizka Ummi Ayu Istiqomah, Ayu Bambang Sulardiono Boedi Hendrarto Cahyo, Tri Nur Carleone de Prima, Carleone Chrysalina Indrastuti Churun A’in Delahoya, Christian Devi Kristi Purba Dewi Meynita, Dewi Dharmaningtyas, Nimas Diah Ayuningrum, Diah Dominig, Amryta Dwi Yulianto Dyah Prajna Swayati, Dyah Prajna Eko Nofridiansyah, Eko Erzad, Avisha Fauziah Etty Silviana Wahyuningrum, Etty Silviana Eugene Ramarta da Linne Fadhilah Maharani Fajrin, Fadhilah Maharani Febbrianna, Vida Febrianto, Sigit Frida Aprilia Loinenak, Frida Aprilia Frida Purwanti Gultom, Christine Rosaline Haeruddin Haeruddin Haikal, Faqilliansi Hapsari, Rania Widia Hikmah, Nur Hikmah Hutami, Ganjar Hesti Indraswari Putri Khaeksi, Indraswari Putri Ittok Rochmad Choirudin Janisa Ferril Indriyastuti Kharisma Aji Winarto Kresnasari, Dewi Lakastri, Lavia Legina Lourenta Siregar Lestari, Abid Luthfieana Mentari, Luthfieana Marhana, Tasya Merlia Purnama Putri Millatia, Zulfa Mohamad Haekal Muchtar Yulianto Muhammad Helmi Muhammad Zainuri Mulia Delvi, Betlin Indriani Mulyaningsih, Dwi Mustofa Niti Supardjo Niniek Widyorini Nisak, Yuyun Khoirun Norma Afiati Nugroho, Adhi Nur Kharimah Oktaviana, Clarisa Ika Oktavianto Eko Jati Pinasthi, Laili Salma Prabowo, Danar Pratiwi, Galuh Alia Pujiono Wahyu Purnomo Purba, Chris Antoni P Rella Nur Taqwa Retnoayu Budiasih, Retnoayu Rizal Akbar Hutagalung, Rizal Akbar Rizki Pramuditya Kurniatama, Rizki Pramuditya Romadhony, Muchammad Yusuf Rudhi Pribadi Sahala Hutabarat Sefanya Roswaty Siahaan, Donal Sihombing, Yuni Harvesty Simanjuntak, Siska Lestari Sinulingga, Hiskia Arapenta Siti Rudiyanti Siti Widya Arfiatin Sofiyani, Risna Gina Sri Sedjati Supriharyono Supriharyono Suryanti Taufani, Wiwiet Teguh Viki Darusman Wahyu Adi Wahyu Permana Aji Wiarta, Rinto Widiyasari, Laurentina Kiki Wiwi Siti Rohmah, Wiwi Siti Yuliana, Eka Yulfa Yusty Amelia Zulistiana Mufaidah, Zulistiana