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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Acta Aquatica: Aquatic Sciences Journal Jurnal MAIYAH Jurnal Perikanan
Firdaus, Abdul Malik
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Decision Sciences, Operations Research & Management Environmental Science Library & Information Science Materials Science & Nanotechnology Social Sciences Other

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Distribusi Kalsium (Ca) Pada Daerah Aliran Sungai Serayu Fikriyya, Nabela; Putri, Desta Fatma; Jatmoko, Bambang Eko; Firdaus, Abdul Malik
MAIYAH Vol 3 No 3 (2024): Maiyah : Vol. 3 No. 3 September 2024
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.maiyah.2024.3.3.13162

Abstract

Serayu River Watershed is one of the watersheds in Central Java that covers several districts including Wonosobo, Banjarnegara, Purbalingga, Banyumas, and Cilacap. The condition of the Serayu River Watershed at this time has experienced damage and environmental pollution which has resulted in a decrease in the quality of Serayu River Water. Calcium is one of the minerals present in water and sediment. Calcium content is influenced by reactions involving carbon dioxide gas either due to respiration of plants or aquatic animals. The presence of domestic wastewater is an external element that can affect high calcium concentrations in waters. The purpose of this study was to determine the distribution of Calcium (Ca) in the Serayu River Watershed. Sampling was conducted in November 2023 located in the Serayu Watershed Area. Sampling was carried out at 15 points of the Serayu River Watershed. The method used is titrimetric analysis. The analysis results obtained are the highest Calcium (Ca) value found in Menyawak River at 52.40 mg/L. The calcium distribution map shows a red interpolation color. The lowest Calcium (Ca) value is found in the Kalisapi River at 19.20 mg/L. The calcium distribution map shows a yellow interpolation color.
Jenis dan Komposisi Sampah Laut di Pesisir Randusanga, Brebes, Jawa Tengah: Types and Composition of Marine Debris in Randusanga Coastal, Brebes, Central Java El Haq, Ferlynda; Ainaya, Khansa Ghaida; Zaky Mubarok, Muhamad; Sultoni, Iman; Hidayat, Rizqi Rizaldi; Firdaus, Abdul Malik; Hidayati, Nuning Vita
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 16 No. 2 (2024): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitkt.v16i2.46978

Abstract

Permasalahan sampah plastik di Indonesia dianggap sebagai status darurat, hasil penelitian menempatkan Indonesia sebagai kontributor sampah plastik laut terbesar di dunia setelah Tiongkok. Minimnya informasi mengenai pencemaran sampah laut di pantai menjadi masalah tersendiri dalam penanggulangannya, khususnya di Kabupaten Brebes, Jawa Tengah. Penelitian ini bertujuan mengidentifikasi jenis sampah laut serta mengestimasi komposisi sampah di pesisir Pantai Randusanga, Brebes. Pengambilan sampel sampah laut dilakukan menggunakan metode pengamatan transek kuadran sebanyak 3 kali dengan total 15 transek pada bulan Agustus-Oktober 2021. Data dianalisis menggunakan pendekatan Graphical Data Analysis (GDA). Hasil yang ditemukan adalah sampah plastik yang paling dominan dengan jumlah sebanyak 869 item, diikuti busa plastik 190 item, kertas dan kardus 57 item, kayu 48 item, karet 36 item, bahan lainnya 34 item, logam 22 item, kain 8 item, serta kaca atau keramik sebanyak 4 item. Hasil analisis juga menunjukkan bahwa berdasarkan ukuran, jenis sampah berukuran makro merupakan sampah paling banyak ditemukan. Jumlah total makro debris yang ditemukan di lokasi penelitian sebanyak 1.222 item, sedangkan meso debris sebanyak 66 item. Persentase komposisi kelimpahan sampah adalah plastik (71%), busa plastik (15%), kain (4%), kaca dan keramik (0%), logam (0%), kertas dan kardus (4%), karet (0%), kayu (2%), bahan lainnya (4%). Jenis sampah plastik berdasarkan Resin Indetification Code (RIC) terdiri atas sampah berjenis polypropylane (PP), low density polyethylene (LDPE), others (OT), polystyrene (PS), high density polyethylene (HDPE), polyethylene terephthalate (PET/PETE). Tingginya kelimpahan sampah laut setiap bulannya diduga berkaitan erat dengan minimnya kesadaran masyarakat terhadap keberlangsungan ekosistem sekitar serta minimnya kesadaran akan implementasi dari Peraturan Pemerintah terkait penanganan sampah yang berlaku.
LOCAL WISDOM AS A STRATEGIC APPROACH FOR SUSTAINABLE FISHERIES RESOURCE MANAGEMENT: A CASE STUDY IN THE RIVERINE WATERS OF BANYUMAS REGENCY, CENTRAL JAVA Putera, I Gede Suweda Anggana; Pramono, Taufik Budhi; Junaidi, Teuku; Salsabila, Sahda; Hutabarat, Philipus Uli Basa; Firdaus, Abdul Malik; Permatasari, Mahardhika Nur
Jurnal Perikanan Unram Vol 15 No 3 (2025): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v15i3.1511

Abstract

The riverine ecosystems traversing Banyumas Regency through the Serayu Watershed (DAS Serayu) serve as strategic freshwater resource zones, supporting both ecological functions and local livelihoods through economically valuable fish species. However, anthropogenic pressures such as domestic waste pollution, land-use conversion, overfishing, and the use of destructive fishing methods have led to significant ecological degradation. This study aims to: (1) identify key issues in the management of riverine fish resources in Banyumas as common property resources, and (2) explore community-based local wisdom practices implemented for sustainable fisheries conservation. Conducted in February 2025 at the Pokmaswas Lestari Kaliku post in Rawalo Subdistrict, this research employed a qualitative descriptive approach, utilizing field observations, in-depth interviews, and FGDs with 38 respondents drawn from key institutions, including the Provincial Marine and Fisheries Office, Banyumas Fisheries and Livestock Office, local fishery extension workers, the Rekam Jejak Nusantara NGO, and 9 active community monitoring groups (Pokmaswas). Findings reveal that Pokmaswas have adopted various forms of traditional ecological knowledge as management instruments, including: (1) prohibition of hazardous fishing gear (poison and electric shock), (2) establishment of core conservation zones (fish sanctuaries), (3) periodic restocking of indigenous fish species, (4) enforcement patrols against illegal and destructive fishing practices, and (5) public education and outreach initiatives on river ecosystem conservation. These practices demonstrate not only ecological effectiveness but also the critical role of community participation in achieving sustainable fisheries management. In conclusion, local wisdom-based approaches prove to be strategic and effective in addressing complex aquatic resource management challenges, offering an integrated pathway between conservation imperatives and the socio-economic needs of riverside communities.
Water quality status of the Serayu Watershed (DAS) using the STORET method approach Hidayati, Nuning Vita; Condro, Abi; Jatmoko, Bambang Eko; Fikriyya, Nabela; Junaidi, Teuku; Hastuti, Dewi Wisudyanti Budi; Firdaus, Abdul Malik; Raharja, Ferry Cahya
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 3 (December, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v12i3.21258

Abstract

The Serayu River Basin (DAS) spans 180 km and traverses several districts in Central Java, including Wonosobo, Banyumas, Banjarnegara, Cilacap, and Purbalingga. Significant pollution has been observed in the Serayu River Basin, with the primary sources of pollution being agriculture, industry, and community activities. The objective of this investigation is to evaluate the Serayu River Basin's condition in relation to the STORET method and Class I, II, III, and IV water quality standards, as well as physical and chemical parameters. Ex situ analysis of water samples was implemented through purposive random sampling in the survey methodology. Class I pollution levels in the Serayu River Basin are classified as Category D, which denotes substantial pollution, according to the STORET method. Class II is classified as Category C, which denotes moderate pollution, as indicated by a STORET index value of -26. Several research locations exhibit water parameters that exceed the quality standards, including pH, DO, COD, phosphate, and ammonia. In order to preserve the purity and condition of the Serayu River Basin, it is necessary for all stakeholders, including the community, to participate. Furthermore, the management of the Serayu Watershed necessitates the implementation of control strategies or efforts. Keywords: Basin; River pollution; Serayu; STORET; Water Quality
Keanekaragaman dan Dominansi Spesies Mangrove di Kawasan Rehabilitasi Mangrove Desa Kaliwlingi Kabupaten Brebes Setiani, Oktilia; Firdaus, Abdul Malik
MAIYAH Vol 4 No 3 (2025): Maiyah : Vol. 4 No. 3 September 2025 On Progress
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.maiyah.2025.4.3.16788

Abstract

Penelitian ini bertujuan untuk mengetahui keanekaragaman dan dominansi spesies mangrove di kawasan rehabilitasi mangrove Desa Kaliwlingi Kecamatan Brebes Kabupaten Brebes Jawa Tengah. Penelitian ini dilakukan pada tanggal 24 - 26 Agustus 2024. Penelitian menggunakan teknik purposive sampling pada 3 stasiun pengamatan menggunakan transek kuadrat berukuran 10x10m (pohon), 5x5 m (pancang), dan 1x1 m (semai). Karakteristik perairan ekosistem mangrove yang meliputi suhu, salinitas, dan pH diamati secara in situ. Analisis data dilakukan dengan menghitung indeks keanekaragaman (Shannon Wienner) dan indeks dominansi (Simpsons). Hasil penelitian menunjukan bahwa terdapat empat jenis mangrove yang ditemukan, yaitu Avicennia marina, Avicennia alba, Rhizophora mucronata, dan Rhizophora stylosa. Nilai indeks keanekaragaman mangrove di Desa Kaliwlingi berkisar 0,603-0,952 yang tergolong rendah pada setiap stasiun pengamatan yaitu stasiun I (0,603), stasiun II (0,633) dan stasiun III (0,952). Indeks dominansi spesies berkisar 0,439-0,683, pada stasiun I (0,683) dan stasiun II (0,649) termasuk kategori sedang dan kategori rendah pada stasiun III (0,439), yang menunjukkan bahwa terdapat sebaran spesies yang dominan. Hasil pengukuran kualitas air menunjukkan suhu 26–27,3°C, salinitas 37–38,6‰, dan pH 6,8–7,2, yang menunjukkan bahwa kondisi lingkungan perairan masih sesuai untuk mendukung pertumbuhan mangrove.
Co-Authors Ainaya, Khansa Ghaida Condro, Abi El Haq, Ferlynda Fikriyya, Nabela Hastuti, Dewi Wisudyanti Budi Hidayat, Rizqi Rizaldi I Gede Suweda Anggana Putera Jatmoko, Bambang Eko Junaidi, Teuku Mahardhika Nur Permatasari Nuning Vita Hidayati Philipus Uli Basa Hutabarat Putri, Desta Fatma Raharja, Ferry Cahya Salsabila, Sahda Setiani, Oktilia Sultoni, Iman Taufik Budhi Pramono Zaky Mubarok, Muhamad