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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences Sain Akuatik Omni-Akuatika Jurnal MAIYAH Indonesian Journal of Forestry Research
Arif Mahdiana, Arif
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Education Environmental Science Social Sciences

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Ektoparasit Cacing pada Benih Ikan Nila (Oreochromis niloticus) di Balai Benih Ikan Pandak dan Sidabowa Kabupaten Banyum Mulia, Dini Siswani; Mahdiana, Arif; Utami, Rakhmawati
Sain Akuatik Vol 9, No 2 (2006): SAINS AKUATIK VOLUME 9 NO. 2 2006
Publisher : Universitas Muhammadiyah Purwokerto

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Abstract

The aims of this research were to know the type of helminth ectoparasites and prevalency of helminth ectoparasites in fish fry of nila (Oreochromis niloticus). Experiments held at two  different ponds, Local Hatchery Center Pandak Sidabowa, Banyumas Regency. The research used survey method. The location of site was determined with purposive sampling method. The samples were taken randomly (random sampling) from two locations. Total fishes samples were 135, as follow 75 of fishes from Pandak and other 60 fishes from Sidabowa, with twice replication of taking samples.  The data were analyzed descriptively and continued analyzed by t test to compare the prevalency of ectoparasites in Pandak and Sidabowa. The result of this research showed that nila fish fry at the Pandak and Sidabowa, were found two kinds of helminth parasites such as Dactylogyrus sp. and  Gyrodactylus sp.  Higher prevalency occurred on the body surface of nila fish fry that caused by Gyrodactylus sp., 76% in Pandak and 80% in Sidabowa. While on the infected to gills of nila fish fry that caused by Dactylogyrus sp., 45,33% in Pandak and 48,33% in Sidabowa.
Polycyclic Aromatic Hydrocarbons (PAHs) Potential Sources in Sediments of Plawangan Timur, Segara Anakan, Cilacap: Occurrence and Distribution Haris, Abdul; El Mouchtari, El Mountassir; Nurshofia, Winarni; Putranto, Yogi; Hidayat, Rizqi Rizaldi; Husni, Iqbal Ali; Hendrayana, Hendrayana; Mahdiana, Arif; Sulistyo, Isdy; Hidayati, Nuning Vita
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 3 (2024): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.29.3.393-402

Abstract

Polycyclic Aromatic Hydrocarbons (PAHs) have the potential to contaminate the coastal area of Plawangan Timur, Cilacap, Indonesia. Therefore, this research aims to determine the composition, distribution, source, and contamination level of PAHs in this region. Sediment samples were taken at seven stations. The research findings indicate that among the 16 types of PAHs, the proportion of each PAH varied between 3-12%. Notably, Benzo(a) Pyrene (BaP) had the highest proportion at 12%, while Naphthalene had the lowest proportion at 3%. According to the distribution pattern, PAHs with a high molecular weight (HMW) are more prevalent than those with a low molecular weight (LMW). The total amount of PAHs ranged from 185 to 1289.9 mg.kg-1 (dw), with an average of 1016.97 mg.kg-1 (dw). Using a diagnostic ratio, it was determined that the origin of the PAHs was either petrogenic, pyrogenic, mixed petrogenic and pyrogenic, or pyrolytic. As a result, Plawangan Timur's degree of pollution was classified as a very high polluted. The average concentration value of each PAHs is higher than the values for the Effect Range Low (ERL) and Effect Range Median (ERM) ranges, indicated there is a significant ecological risk that could have negative consequences on marine life and the ecosystem. It is urgently to handle PAHs pollution due to their relatively high content in sediments. This can be achieved by improving the management of wastewater treatment plants (WWTPs) for industry, optimizing the role of mangrove forests in reducing pollution in the waters, as well as building and increasing collaboration between related agencies in the prevention of marine oil spills.
Several Factors of Production of Sirang Nets For Catching White Pomfret (Pampus Argenteus) In Cilacap Waters Mahdiana, Arif; GH, Nehru Nuridana; Junaidi, T
MAIYAH Vol 2 No 1 (2023): Maiyah : Vol.2 No.1 Maret 2023
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (198.968 KB) | DOI: 10.20884/1.maiyah.2023.2.1.7609

Abstract

Kegiatan perikanan tangkap sangat dipengaruhi oleh upaya penangkapan yang dilakukan dengan menggunakan berbagai teknologi penangkapan ikan, termasuk jaring sirang untuk mengeksploitasi sumberdaya ikan yang menjadi tujuan penangkapan, yaitu ikan Bawal Putih. Penelitian bertujuan untuk mengetahui produksi jaring sirang, besarnya pengaruh faktor-faktor produksi dan mengetahui faktor-faktor produksi yang paling berpengaruh terhadap produktivitas jaring sirang. Metode penelitian yang digunakan adalah metode survei dengan teknik pengambilan sampel random sampling. Analisis data yang digunakan yaitu deskriptif kualitatif dan regresi linier berganda yang kemudian dilanjutkan dengan uji F dan uji t. Hasil penelitian menunjukkan bahwa rata-rata hasil produksi jaring sirang yang didaratkan di TPI Pandanarang adalah 2,12±1,41 kg/unit kapal/hari. Besarnya pengaruh jumlah BBM, lama pengoperasian, panjang jaring, lebar jaring, pengalaman nelayan dan umur nelayan sebagai faktor masukan (X) secara bersama-sama adalah 95,5% terhadap produktivitas jaring sirang sebagai faktor keluaran (Y), sedangkan yang tidak terdeteksi sebesar 4,5% dipengaruhi oleh faktor lain. Faktor-faktor produksi yang paling berpengaruh terhadap produktivitas jaring sirang yaitu panjang jaring dan lebar jaring.
Status Perikanan Tangkap di Kabupaten Kebumen Yahya, Reza; Mahdiana, Arif; Muslih, Muslih
MAIYAH Vol 2 No 2 (2023): Maiyah : Vol.2 No.2 Juni 2023
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (283.332 KB) | DOI: 10.20884/1.maiyah.2023.2.2.8524

Abstract

Capture fisheries in Kebumen Regency has a large potential of fish resources. The status of capture fisheries in Kebumen Regency includes the development of the number of fishermen/RTPs, fishing vessels, fishing gear, fishing production volume, fishery production value, types and catches of fish. The results showed that Kebumen fishermen are included in the category of small fishermen based on the use of boat types less than 5 GT and outboard motorboats. The number of growth of fishermen and the number of fishing boats in Kebumen Regency increased throughout 2016-2020. Types of fishing gear used by fishermen in Kebumen district include fixed gill nets, drift gill nets, trammel nets, fishing rods and hooks. The production volume and production value of the Kebumen capture fishery decreased in 2020 due to the COVID-19 pandemic. Potential species caught by Kebumen fishermen were demersal fish with high economic value such as white pomfret (Pampus argenteus), lobster (Panulirus homarus), jerebung shrimp (Penaeus merguiensis) and red snapper (Lutjanus campechanus).
Pola Pertumbuhan dan Faktor Kondisi Ikan Petek (Leiognathus equula, Forsskål, 1775) dari Perairan Plawangan Plawangan Timur Segara Anakan, Kabupaten Cilacap. Sahara, Laura Rose; Putri, Adinda Kurnia; Listyani, Mei; Dewa, Andika; Mahdiana, Arif; Kusuma, Rima Oktavia; Ekalaturrahmah, Yenni Arista Cipta
MAIYAH Vol 2 No 4 (2023): Maiyah : Vol. 2 No. 4 Desember 2023
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.maiyah.2023.2.4.11221

Abstract

ABSTRAK Ikan petek (Leiognathus equula) merupakan ikan demersal yang dapat hidup di muara sungai maupun laguna pada kedalaman 10 meter sampai 60 meter. Penelitian ini bertujuan untuk menentukan tipe pola pertumbuhan ikan petek berdasarkan hubungan panjang bobotnya serta menganalisis kebugaran ikan petek. Pengambilan sampel dilakukan pada 24 Juni 2023, 23 Juli 2023, serta 19 Agustus 2023 menggunakan jaring rampus dengan panjang 36.576 meter, lebar 6.4008 meter, dan ukuran mata jaring yaitu 1 inci dan 2 inci. Hasil penelitian menunjukkan bahwa hubungan panjang bobot ikan petek yang didapatkan memiliki nilai b kurang dari 3 (2.3907) sehingga dapat dikatakan pola pertumbuhannya alometrik negatif (pertumbuhan panjang lebih cepat daripada pertumbuhan bobotnya). Hasil faktor kondisi yang didapatkan pada penelitian ini memiliki kisaran antara 0.7554 - 1.2153 dengan rata-rata 1.0082 + 0.1272 yang menandakan bahwa ikan petek pada penelitian ini memiliki bentuk tubuh agak montok.
STAKEHOLDERS ANALYSIS OF MANGROVE ECOSYSTEM MANAGEMENT IN SEGARA ANAKAN LAGOON, CILACAP Ardiyanto, Anjalli Tasha; Hilmi, Endang; Mahdiana, Arif; Junaidi, Teuku; Prayogo, Norman Arie; Dewi, Rose; Cahyo, Tri Nur
Indonesian Journal of Forestry Research Vol. 11 No. 2 (2024): Indonesian Journal of Forestry Research
Publisher : Association of Indonesian Forestry and Environment Researchers and Technicians

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59465/ijfr.2024.11.2.189-209

Abstract

The mangrove ecosystems are one type of coastal ecosystem found along coastlines and river estuaries that are influenced by tides and inundation. Segara Anakan Lagoon, Cilacap as one type of coastal ecosystem has a protection function, coastal area buffer, and cultivation area function that must be supported from the aspects of policy and institutions, communication, and coordination. This study aims to identify the role of stakeholders and the relationship between stakeholders in mangrove ecosystem management in Segara Anakan Lagoon, Cilacap. The research method used was a survey and interview method analyzed with MACTOR software. The results showed that there were 18 stakeholders who involved in mangrove ecosystem management in Segara Anakan Lagoon, Cilacap. The stakeholders are classified into main stakeholders, key stakeholders, and supporting stakeholders using the objective of mangrove management as key activities such as silvofishery, mangrove conservation, fishing activity, industry activity, etc. The level of convergence between stakeholders was 96.1% and the level of divergence was 3.9%. These results indicate a relatively low potential for conflict between stakeholders. The research can be used as a model relation between stakeholders to support the management activity of Segara Anakan Lagoon.
Mapping of Mangrove Ecosystem In Segara Anakan Lagoon using Normalized Different Vegetation Index and Dominant Vegetation Index Hilmi, Endang; Sari, Lilik Kartika; Mahdiana, Arif; Junaidi, Teuku; Muslih, Muslih; Samudra, Sesilia Rani; Prayogo, Norman Arie; Baedowi, Muhamad; Cahyo, Tri Nur; Putra, Rifky Raihady Danu; Sari, Fitra Amalia
Journal Omni-Akuatika Vol 18, No 2 (2022): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2022.18.2.926

Abstract

Mangrove ecosystem in Segara Anakan Lagoon (SAL) Cilacap as a typical and specific semiclosed estuary. SAL  is dominated by many species like as Rhizophora spp., Sonneratia spp., Bruguiera spp., Avicennia spp., and other species. The normalized different vegetation index (NDVI) and dominant vegetation index (DVI) are a suitable method to support the mapping analysis of mangrove structure and mangrove density.  This research aimed to develop mapping of mangrove species distribution, density and dominated species using NDVI and DVI.  The method of this research used NDVI analysis using satellite imagery 2017-2020 and domination vegetation with line and quadrat transect method. The results showed that  West Segara Anakan had mangrove dense (25 %), moderate density (25 %), rare density (50%) and East Segara Anakan had mangrove dense (43,86 %), moderate density (47.99 %), rare density (8,24 %).  Based on domination species showed that East Segara Anakan was dominated by Rhizophora stylosa (233-1633 trees ha-1), Rhizophora apiculata (100-1067 trees ha-1), Nypa frutican (50-2775 trees ha-1), whereas West Segara Anakan was dominated by Nypa frutican (565-2333 trees ha-1), Avicennia marina (198-933 trees ha-1), Sonneratia caseolaris  (132-700 trees ha-1) and Avicennia alba (107-1000 trees ha-1). Keywords : Mangrove density, mapping analysis, Segara Anakan Lagoon, NDVI and NDWI
Water Quality and Pollution Level in Plawangan Barat, Segara Anakan, Cilacap Based on Pollution Index Approach Hidayati, Nuning Vita; Kartikaputri, Ariani Dian; Hernayanti, Hernayanti; Mahdiana, Arif
Journal Omni-Akuatika Vol 19, No 2 (2023): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2023.19.2.1045

Abstract

Segara Anakan is a lagoon located in Cilacap, Central Java. It is characterized as a fragile ecosystem that is very susceptible to the impacts of alterations and land development. This region is susceptible to habitat degradation caused by human activity, resulting in alterations in water quality and pollution. The objective of this study was to provide a comprehensive description of water quality by analysing its physical and chemical properties. Additionally, the study intended to assess the level of water pollution by employing the Nemerow Sumitomo Pollution Index (PI) approach.  The water quality sampling was conducted in the western region of Segara Anakan, namely Plawangan Barat. The obtained data were compared to the established standard quality for marine organisms, as outlined in the PP RI No. 22/2021. The classification of the water pollution level was determined according to Minister of Environment Decree No. 115/2003. The findings of this study indicate that the parameters of temperature, salinity, pH, dissolved oxygen (DO), and biological oxygen demand (BOD) in the water remain suitable for marine life throughout all study stations. However, it was observed that the levels of Total Suspended Solid (TSS), phosphate, and nitrate did not match the established safety thresholds. The pollution index indicated that the water quality in West Plawangan shows varying pollution levels, ranging from light to moderate pollution. Based on the findings obtained, it can be concluded that the Segara Anakan lagoon exhibits a diminished level of suitability for the life of marine organisms.Keywords: Water Quality, Index PI, Nemerow Sumitomo, Plawangan Barat, Marine Pollution
THE SPECIFIC ORDINATION AND CLUSTERING OF MANGROVE ECOSYSTEM IN SEGARA ANAKAN Hilmi, Endang; Junaidi, Teuku; Mahdiana, Arif; Prayogo, Norman Arie; Dewi, Rose; Rahayu, Sri
Indonesian Journal of Forestry Research Vol. 11 No. 1 (2024): Indonesian Journal of Forestry Research
Publisher : Association of Indonesian Forestry and Environment Researchers and Technicians

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59465/ijfr.2024.11.1.47-63

Abstract

Mangrove ecosystem has specific ordination and clustering  following the adaptation toward the environment properties and species competition.  This research aimed to develop a specific ordination to support ecosystem stability. The research was carried out with a multidimensional system using density and environmental properties with similarity and Euclidian distance indexes. The results showed that West Segara Anakan had 6 ordination areas, and East Segara Anakan had 5 ordinations with the range density of 68-3373 trees/ha and 550-2975 trees/ha. Based on environmental properties, WSAL had nitrate, phosphate, pyrite, water and soil pH, and water salinity levels of 10.57-31.44 mg/lt, 8.44-22.89 mg/lt, 1.03-1.57 %, 5.60-7.78, 6.58-7.03, and 24.15-33.85 ppt, respectively. In ESAL, nitrate, phosphate, pyrite, water and soil pH, and water salinity were within the range of 19.72-28.98 mg/lt, 10.83-19.72 mg/lt, 1.28-2.91%, 6.35-7.05, 5.91-6.23, and 18.00-32.33 ppt. Furthermore, specific ordination showed that Avicennia marina, Rhizophora stylosa, Rhizophora apiculata, and Nypa frutican had the highest level of adaptation. I special thanks for research Terapan Unsoed 2023 to support this research.
Co-Authors . HERNAYANTI Abdul Haris Adinda Kurnia Putri Ardiyanto, Anjalli Tasha Cahyo, Tri Nur Dewa, Andika Dini Siswani Mulia El Mouchtari, El Mountassir Endang Hilmi GH, Nehru Nuridana Hendrayana Hendrayana, Hendrayana Hidayat, Rizqi Rizaldi Husni, Iqbal Ali Isdy Sulistyo Junaidi, T Junaidi, Teuku Kartikaputri, Ariani Dian Kusuma, Rima Oktavia Lilik Kartika Sari, Lilik Kartika Listyani, Mei Muhamad Baedowi Muslih Muslih Norman Arie Prayogo, Norman Arie Nuning Vita Hidayati Nurshofia, Winarni Putra, Rifky Raihady Danu Rakhmawati Utami, Rakhmawati Rose Dewi Sahara, Laura Rose Sari, Fitra Amalia Sesilia Rani Samudra SRI RAHAYU Yahya, Reza Yenni Arista Cipta Ekalaturrahmah Yogi Putranto