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Journal of Marine Research
Published by Institut Pertanian Bogor
ISSN : -     EISSN : 24077690     DOI : 10.14710/jmr.v9i4.28340
Core Subject : Agriculture, Social,
Agriculture, Biological Sciences & Forestry Environmental Science
The Journal of Tropical Fisheries Management is managed by the Department of Water Resource Management, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University aims to publish the results of basic, applied research in the scope of fisheries resources, fish stock studies, and population dynamics, fish biodiversity, fisheries technology, industrialization and fish trade, fisheries management, and fisheries development policies in the tropics, especially Indonesia. The scope of the area includes: Marine Fisheries Coastal Fisheries Inland Fisheries The focus and scope of this publication are expected to contribute thoughts for the government to strengthen the science of fisheries management
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Ilmu Lingkungan (Lain-Lain)
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Search results for , issue "Vol 12, No 2 (2023): Journal of Marine Research" : 21 Documents clear
Analisis Biometri dan Laju Pertumbuhan Kerang Hijau (Perna viridis) yang Dibudidayakan Dalam Karamba Apung di Laut Jawa Desa Banyuurip Kecamatan Ujungpangkah Anfa'u Mazida; Aminin Aminin; Farikhah Farikhah
Journal of Marine Research Vol 12, No 2 (2023): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v12i2.36270

Abstract

Kerang hijau adalah komoditas laut endemik perairan Indonesia yang bernilai ekonomis penting dan potensial dijadikan sebagai objek eduwisata terkait aspek biologis dan habitatnya yang terintegrasi dengan ekosistem hutan mangrove.  Desa Banyuurip memiliki potensi kerang hijau melimpah yang telah lama dibudidayakan oleh nelayan tradisional di Laut Jawa, berdekatan dengan area ekowisata Banyuurip Mangrove Center (BMC), sehingga perlu diujicobakan kerang hijau yang dibudidayakan dalam unit karamba apung sebagai objek eduwisata. Tujuan penelitian adalah menganalisis pertumbuhan dan hasil panen kerang hijau dalam karamba apung yang dioperasikan pada koordinat 06°52'18.84" LS dan 112°29'41.19" BT di Laut Jawa Desa Banyuurip Kecamatan Ujungpangkah.  Karamba apung memiliki area terang dan area gelap terkait dengan penerimaan cahaya matahari di kolom air, dimana area gelap terjadi akibat penutupan permukaan karamba apung yang diperuntukkan sebagia area catwalk agar area karamba mudah diiakses bagii siapa pun yang berkunjung ke sana.  Metode penelitian ini adalah deskriptif dan sampel diambil secara purposive random sampling.  Sampel kerang hijau dari area terang (n= 4354) dan (gelap n=2416) dianalisis aspek biometri, laju pertumbuhan, dan biomassa panen. Parameter kualitas air diukur secara berkala. Uji t (α=5%) digunakan untuk menetapkan perbedaan rerata variabel populasi dari area terang dan gelap. Aspek biometri lebar di area terang (17,69±3,99 mm) berbeda nyata (P<0.05) dari lebar di area gelap (17,14±3,76 mm), tinggi di area terang (11,75±2,86 mm) berbeda nyata (P<0.05) dari tinggi di area gelap (11,32±2,78 mm). Nilai ‘b” hubungan aspek biometri memiliki pola pertumbuhan allometric negative atau (b< 3) dimana pada area terang 2.39 dan area gelap 2.45. SGR pada area terang 1.57%/hari dan pada area gelap 1,55%/hari. Hasil panen pada area terang berkisar antara 3414–4992 g sedangkan pada area gelap 3331 – 3530 g, yang berkaitan dengan luasan dan jumlah tali kolektor di kedua area. Parameter kulitas air pada lokasi tersebut meliputi suhu 27,83±0.980C, pH 7,17±0.75 ppm, DO 6,92±0,74 mg/l, kecerahan 152±31,07 cm, dan salinitas 24,17±1,47 ppt masih dalam kondisi optimal untuk pertumbuhan kerang hijau. Berdasarkan hasil penelitian, disimpulkan bahwa hasil panen berdasarkan aspek biometri kerang hijau di area terang lebih baik dari pada di area gelap sedangkan laju pertumbuhan di area terang sama dengan di area gelap. Hasil penelitian ini diharapkan menjadi bahan rekomendasi bagi perekayasaan unit karamba apung yang diperuntukkan bagi aktivitas eduwisaata. Green mussels are endemic marine commodities in Indonesian waters that have significant economic value and potential as educational tourism objects related to their biology and habitat aspects integrated with mangrove forest ecosystems. The traditional fishermen in Banyuurip Village cultivated it many years ago in the Java Sea, adjacent to the Banyuurip Mangrove Center (BMC) ecotourism area, so it is necessary to test green mussels cultivated in floating cage units as an educational object. The study aimed to analyze the growth and yield of mussels in floating cages operated at coordinates 06°52'18.84" South Latitude and 112°29'41.19" East Longitude in the Java Sea, Banyuurip Village, Ujungpangkah District. Floating cages have bright areas and dark areas related to the reception of sunlight in the water column. Dark areas occur due to the closure of the floating cage surface, which is designated as a catwalk area so that the cage area is easily accessible to anyone. This research method is descriptive, and the sample is taken by purposive random sampling. Green mussel samples from bright (n=4354) and (dark n=2416) areas were analyzed for biometric aspects, growth rate, and harvested biomass. Air quality parameters are measured regularly. The t-test (α=5%) is used to determine the difference in the mean of the population variables from the light and dark areas. The biometric aspect of width in the bright area (17.69±3.99 mm) is significantly different (P<0.05) from the width in the dark area (17.14±3.76 mm), height in the bright area (11.75±2, 86 mm) was significantly different (P<0.05) from the height in the dark area (11.32±2.78 mm). The value of 'b' about biometric aspects has a negative allometric growth pattern or (b < 3) where the light area is 2.39 and the dark area is 2.45. SGR in bright areas is 1.57%/day and in dark areas is 1.55%/day. Yields in the light area ranged from 3414 – 4992 g, while in the dark area, it was 3331 – 3530 g, which relates to the area and the number of gathering ropes in both areas. Water quality parameters at that location include temperature 27.83 ± 0.980C, pH 7.17 ± 0.75 ppm, DO 6.92 ± 0.74 mg/l, brightness 152 ± 31.07 cm, and salinity 24.17 ± 1 .47 ppt is still in optimal conditions for the growth of mussels. Based on the study results, the yield based on biometric aspects of green mussels in bright areas is better than in dark areas, while the growth rate in bright areas is the same as in dark areas. The results of this study are expected to become recommendations for the engineering of floating cage units intended for educational activities. 
Nilai Simpanan dan Harga Karbon Ekosistem Mangrove Desa Pasar Banggi, Rembang, Jawa Tengah Fifi Nur Hidayah; Subagiyo Subagiyo; Adi Santoso
Journal of Marine Research Vol 12, No 2 (2023): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v12i2.34616

Abstract

Pemanasan global merupakan salah satu fenomena alam  yang sedang berlangsung dan disebabkan oleh adanya peristiwa efek rumah kaca. Penyebab terjadinya efek rumah kaca diantaranya adalah meningkatnya konsentrasi gas Karbondioksida (CO2) di atmosfer. Hutan mangrove berperan sebagai upaya mitigasi akibat dari pemanasan global karena salah satu fungsi dari hutan mangrove adalah sebagai penyimpan karbon (C). Tujuan dari peneitian ini secara umum dilakukan untuk mengevaluasi simpanan karbon pada rehabilitasi mangrove desa Pasar Banggi. Metode yang digunakan pada penelitian ini adalah metode deskriptif yang dilakukan pada tiga stasiun. Masing-masing stasiun dibagi menjadi tiga plot yang bertujuan untuk menghitung nilai biomassa menurut rumus alometrik. Estimasi simpanan karbon pada substrat didapat dari pengambilan sampel sedimen di setiap stasiun yang selanjutnya dilakukan analisis kandungan bahan organik dengan metode LOI (Loss on Ignation) di Laboratorium Nutrisi dan Pakan Universitas Diponegoro. Setelah mendapatkan hasil nilai simpanan karbon pada tegakan dan substrat kemudian dilakukan perhitungan nilai ekonomi karbon. Berdasarkan hasil penelitian di Ekosistem Mangrove Desa Pasar Banggi didapatkan nilai simpanan karbon pada tegakan sebesar 74.986,95 ton/ha pada substrat sebesar 202,61 ton/ha. dan untuk nilai ekonomi sebesar Rp 6.302.937 untuk harga pasar sukarela dan untuk harga pasar wajib sebesar Rp 16.476.737.063,5. Hasil tersebut menunjukkan bahwa nilai simpanan karbon dan nilai ekonomi mangrove di Desa Pasar Banggi Jumlahnya sangat Besar dan mampu menjadi salah satu solusi untuk perubahan iklim.Global warming is an ongoing natural phenomenon caused by the greenhouse effect. One of the causes of the greenhouse effect is the increased concentration of carbon dioxide (CO2) in the atmosphere. Mangrove forests act as mitigation efforts due to global warming because one of the functions of mangrove forests is to store carbon (C). The purpose of this research is generally to evaluate carbon storage in the mangrove rehabilitation of the Pasar Banggi Village. The method used in this study is a descriptive method which was carried out at three stations with different mangrove conditions. Each station is divided into three plots which aim to calculate the biomass value according to the allometric formula. Estimation of carbon deposits on the substrate was obtained from sediment sampling at each station which was then analyzed for organic matter content using the LOI (Loss on Ignation) method in the Nutrition and Feed Laboratory of Diponegoro University. After getting the results of the carbon storage value in the stand and substrate, then the calculation of the economic value of carbon is carried out. Based on the results of research in the Mangrove Ecosystem of Pasar Banggi Village, the value of carbon stored in the stands was 74,986.95 tons/ha on a substrate of 202.61 tons/ha. And for the economic value of Rp. 6,302,937 in the voluntary market and for the mandatory market, it is Rp. 16,476,737,063.5. These results indicate that the value of carbon storage and the economic value of mangroves in the Pasar Banggi Village is very large and can be one of the solutions for climate change.
Logam Berat Timbal (Pb) Pada Air, Sedimen, dan Kerang Darah (Anadara Granosa) di Muara Sungai Loji dan Perairan Pantai Sekitarnya, Kota Pekalongan Rahma Nur Kharisma; Bambang Yulianto; Ria Azizah Tri Nuraini
Journal of Marine Research Vol 12, No 2 (2023): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v12i2.36375

Abstract

: Kota Pekalongan merupakan sentra industri batik yang besar di Indonesia. Kegiatan industri batik di Pekalongan menjadi salah satu penghasil limbah cair sisa pewarna batik yang mengandung logam berat yang mencemari lingkungan perairan sungai-sungai. Penelitian kandungan logam Pb pada aliran dan muara Sungai Loji dan Perairan Pantai Pekalongan dilakukan pada Februari-Maret 2022. Sampel air, sedimen, dan kerang darah (Anadara granosa) dianalisis menggunakan Spektrofotometri Serapan Atom (AAS) di Laboratorium Departemen Teknik Lingkungan, Universitas Diponegoro, Semarang. Lokasi penelitian dibagi menjadi 5 stasiun yang mewakili daerah terdampak limbah pewarna batik, yaitu pada aliran sungai, Tempat Pelelangan Ikan, muara sungai, perairan laut dangkal, dan perairan laut dalam. Hasil penelitian menunjukkan kandungan logam berat timbal (Pb) pada air berkisar antara 0,06-0,70 mg/l, pada sedimen berkisar antara 23,23-157,07 mg/kg, dan dalam jaringan lunak kerang darah berkisar antara 25,65-46,25 mg/kg. Faktor biokonsentrasi logam berat Pb pada kerang darah terhadap air berkisar antara 41,51-366,43. Batas aman konsumsi kerang darah yang dipanen dari Perairan Pantai Pekalongan berkisar antara 0,032-0,058 kg/minggu. Disimpulkan bahwa logam berat Pb pada air, sedimen, dan kerang darah (Anadara granosa) pada Muara Sungai Loji dan Perairan Sekitarnya, Kota Pekalongan termasuk dalam kategori telah tercemar karena telah melebihi batas baku mutu yang telah ditetapkan.  Pekalongan City is a large batik industry center in Indonesia. The batik industry activity in Pekalongan is one of the producers of liquid waste from batik dye residue, which contains heavy metals that pollute the aquatic environment. The study of Pb metal content in the flow and estuary of the Loji River and Pekalongan Coastal Waters was carried out in February-March 2022. Water, sediment, and samples of Anadara granosa were analyzed using Atomic Absorption Spectrophotometry (AAS) at the Laboratory of the Department of Environmental Engineering, Diponegoro University, Semarang. The research location is divided into five stations representing areas affected by batik dye waste: river flows, Fish Auction Places, river estuaries, shallow sea waters, and deepsea waters. The results showed that the heavy metal content of lead (Pb) in the water ranged from 0.06-0.70 ppm; in the sediment, it ranged from 23.23-157.07 ppm; and in the soft tissue of blood mussels, it ranged from 25.65-46.25 ppm. The bioconcentration factor of heavy metal Pb in blood clams to water ranged from 41.514-366.428. The safe limit for consumption of blood clams in Pekalongan waters ranges from 0.032-0.058 kg/week. It is concluded that the heavy metal Pb in water, sediment, and blood mussels (Anadara granosa) at the Loji River Estuary and the surrounding waters, Pekalongan City is in the polluted category because it has exceeded the quality standard limit that has been set.
Dimorfisme Seksual dan Hubungan Panjang-Berat Ikan Sidat (Anguilla sp.) di Perairan Nusawungu, Kabupaten Cilacap Pramudya Rachadiansyach Putra; Munasik Munasik; Nur Taufiq-Spj
Journal of Marine Research Vol 12, No 2 (2023): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v12i2.35725

Abstract

Banyak penelitian yang telah dilakukan pada ikan sidat. Namun, infomarsi mengenai dimorfisme seksual dan hubungan panjang berat pada ikan sidat belum banyak diketahui, khususnya di Indonesia. Keterbatasan literatur mengakibatkan informasi mengenai dimorfisme seksual dan hubungan panjang berat ikan sidat kurang menyeluruh. Penelitian ini dilakukan untuk memberikan informasi mengenai dimorfisme seksual serta hubungan panjang-berat pada ikan sidat di Perairan Nusawungu, Kabupaten Cilacap. Pengamatan dan pengukuran sampel menggunakan metoda morfometrik. Data morfometrik ikan sidat dianalisa menggunakan regresi linier berganda untuk mengetahui hubungan signifikan antara data morfometrik ikan sidat dengan jenis kelaminnya. Hasil analisis regresi menunjukkan karakter morfologi seperti panjang kepala (HL), batang tubuh (TR), mata menonjol (PE) dan rahang bawah (LJ) memiliki pengaruh signifikan terhadap jenis kelamin ikan sidat. Oleh karenanya, karakter morfologi tersebut diduga menjadi parameter dalam mencirikan antara ikan sidat jantan dan ikan sidat betina. Hubungan panjang-berat ikan sidat adalah W = 0,0008L3,194 dengan nilai r yang diperoleh sebesar 0,933 dan nilai R2 sebesar 0,964 atau 96,4%. Hasil ini menunjukkan bahwa pola pertumbuhan ikan sidat bersifat alometrik positif. Tingginya nilai korelasi yang diperoleh dari analisis hubungan panjang-berat ikan sidat menyatakan bahwa terdapat hubungan yang sangat erat antara panjang ikan dan berat ikan serta 96,4% pertambahan berat pada sampel sidat terjadi dikarenakan pertambahan panjang tubuh sidat tersebut, sedangkan sisanya terjadi karena faktor lain seperti tingkat pertumbuhan, habitat atau preferensi makanan. Many studies have been conducted on eels. However, information about sexual dimorphism and length-weight relationship in eel is not widely known, especially in Indonesia. The limited literature results in less comprehensive information on sexual dimorphism and the relationship between length and weight of eel. This study was conducted to provide information about sexual dimorphism and length-weight relationship in eels in Nusawungu waters, Cilacap Regency. Observation and measurement of samples using the morphometric method. Eel morphometric data were analyzed using multiple linear regression to determine the significant relationship between eel morphometric data and gender. The results of the regression analysis showed that morphological characters such as head length (HL), trunk (TR), prominent eyes (PE) and lower jaw (LJ) had a significant influence on the sex of eels. Therefore, this morphological character is thought to be a parameter in characterizing male and female eels. The relationship between length and weight of eel is W = 0.0008L3.194 with an r value of 0.933 and an R2 value of 0.964 or 96.4%. These results indicate that the growth pattern of eel is positive allometric. The high correlation value obtained from the analysis of the length-weight relationship of eels stated that there was a very close relationship between fish length and fish weight and 96.4% weight gain in eel samples occurred due to the increase in body length of the eel, while the rest occurred due to other factors. such as growth rate, habitat or food preferences.
Studi Karakteristik Oseanografi pada Ekologi Terumbu Karang dalam Menunjang Ekowisata di Perairan Barat Daya Pulau Tomia, Wakatobi La Ode Rasyid Ridzal; Muh. Yusuf; Heryoso Setiyono
Journal of Marine Research Vol 12, No 2 (2023): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v12i2.36232

Abstract

Perairan barat daya Pulau Tomia merupakan wilayah yang masuk Kawasan Taman Nasional Wakatobi dengan potensi sumberdaya berupa terumbu karang berbentuk gugus terumbu karang. Kajian mengenai kondisi parameter oseanografi menjadi aspek penting guna mengetahui kondisi lingkungan perairan barat daya Pulau Tomia dan merupakan langkah awal untuk menunjang ekowisata  serta melengkapi data yang masih minim sebagai sumber referensi atas kajian kelayakan aktifitas ekowisata di perairan tersebut. Parameter yang diamati terkait kesesuaian perairan di barat daya Pulau Tomia meliputi: arus, gelombang, kedalaman perairan, kecerahan, suhu, salinitas, pH, DO, dan kondisi substrat dasar perairan. Tujuan penelitian ini: (1) mempelajari karakteristik fisik kimia oseanografi, dan (2) menilai kesesuaian perairan barat daya Pulau Tomia sebagai kawasan ekowisata berdasarkan parameter fisik kimia oseanografi. Metode penelitian yang digunakan adalah metode kuantitatif. Hasil penelitian menunjukkan bahwa nilai rata rata kecepatan arus 0,34 m/s, gelombang 0.91 meter, kedalaman perairan 14.25 meter, kecerahan 2.8 meter, salinitas 32.962 ‰, pH 7.79, suhu 29.1⁰C, dan DO 14.4 mg/l. Dari hasil pengamatan karakteristik oseanografi menunjukkan skor sebesar 76,47%, berarti termasuk kategori “Cukup Sesuai”. Southwest Tomia Island are an area that is included in the Wakatobi National Park area with a potencial value in the form of coral reefs. The study of the condition of oceanographic parameters is an important aspect to determine the environmental conditions of the waters southwest of Tomia Island and is the first step to supporting ecotourism and completing the data as a reference source for the feasibility study of ecotourism activities in these waters. Parameters observed related to the suitability of the waters in the southwest of Tomia Island include: currents, waves, water depth, brightness, temperature, salinity, pH, DO, and the condition of the bottom substrate of the waters. The aims of this research: (1) to study the physical and chemical characteristics of oceanography, and (2) to assess the suitability of the waters of southwest Tomia Island as an ecotourism area based on the physical and chemical parameters of oceanography. The research method used is quantitative. The results showed that the average value of the current velocity was 0.34 m/s, the wave was 0.91 meters, the water depth was 14.25 meters, the brightness was 2.8 meters, the salinity was 32.962 ‰, the pH was 7.79, the temperature was 29.1⁰C, and the DO was 14.4 mg/l. From the observation of oceanographic characteristics, it shows a score of 76.47%, meaning that it is included in the "Sufficiently Appropriate" category.
Peningkatan Pertumbuhan Artemia sp. melalui Aplikasi Ekstrak Ulva sp. Natasya Erdza Aulia; Ervia Yudiati; Retno Hartati
Journal of Marine Research Vol 12, No 2 (2023): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v12i2.34629

Abstract

Kandungan gizi pada Artemia sp. merupakan salah satu faktor yang mempengaruhi penggunaannya Artemia sp. sebagai pakan alami pada budidaya biota laut. Ulva sp. memiliki potensi sebagai pakan Artemia sp. karena memiliki kandungan protein dan karbohidrat yang tinggi dan keberadaannya melimpah di Indonesia. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian ekstrak Ulva sp. terhadap pertumbuhan Artemia sp. Metode penelitian yang digunakan adalah eksperimental menggunakan rancangan acak lengkap dengan berbagai konsentrai ekstrak Ulva sp. sebanyak 3 pengulangan. Laju pertumbuhan spesifik (SGR) dan laju pertumbuhan (GR) diukur setiap hari selama 5 hari, dan nilai toksisitas (LC50) menggunakan metode BSLT pada 24 jam dengan mengaplikasikan ekstrak Ulva sp. kepada Artemia sp. Hasil uji toksisitas dengan nilai LC50 sebesar 59603.40 ppm yang menunjukkan ekstrak Ulva sp. tidak toksik. Hasil penelitian menunjukkan bahwa Artemia sp. yang dipelihara dengan pemberian ekstrak Ulva sp. konsentrasi 1500 ppm mempunyai nilai laju pertumbuhan spesifik (SGR) tertinggi (29.15%) dan laju pertumbuhan (GR) tertinggi (329.58 um/day). ANOVA test menunjukkan pengaruh pada perbedaan konsentrasi Ulva sp. terhadap pertumbuhan Artemia sp. yang berbeda nyata. Penelitian ini menghasilkan pemberian ekstrak Ulva sp. mempengaruhi peningkatan pertumbuhan Artemia sp. Pertumbuhan Artemia sp. yang dipelihara dengan konsentrasi 1500 ppm memiliki nilai pertumbuhan paling tinggi. The nutritional content of Artemia sp. is one of the factors that influence the use of Artemia sp. as natural food for marine biota cultivation. Ulva sp. has potential as feed for Artemia sp. because it has a high protein and carbohydrate content and is abundant in Indonesia. This study aims to determine the effect of Ulva sp. on the growth of the toxicity of Artemia sp. The research method used is experimental using a completely randomized design using Ulva sp. extract with different concentration in 3 repetitions. Specific growth rate (SGR) and growth rate (GR) were measured daily for 5 days, and toxicity value (LC50) using the BSLT method at 24 hours by applying extracts of Ulva sp. to Artemia sp. The results of the toxicity test with an LC50 value of 59603.40 ppm which shows the extract of Ulva sp. is not toxic. The results showed that Artemia sp. which were maintained by administration of Ulva sp. concentration of 1500 ppm had the highest specific growth rate (SGR) (29.15%) and the highest growth rate (GR) (329.58 um/day). ANOVA test showed the effect on differences in concentrations of Ulva sp. on the growth of Artemia sp. significantly different. This research resulted in the administration of Ulva sp. affect the growth of Artemia sp. Growth of Artemia sp. reared with a concentration of 1500 ppm had the highest growth value.
Sebaran Mikroplastik di Pantai Sepanjang, Kabupaten Gunungkidul Dea Nebraska Norindra; Heny Budi Setyorini; Sri Haryanti Prasetiyowati
Journal of Marine Research Vol 12, No 2 (2023): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v12i2.37442

Abstract

Pantai Sepanjang di Kabupaten Gunungkidul memiliki kegiatan pariwisata yang menyebabkan produksi sampah plastik. Mikroplastik akan berdampak buruk bagi biota, manusia, dan lingkungan. Tujuan dari penelitian ini adalah mengetahui jenis, jumlah dan sebaran mikroplastik di Pantai Sepanjang. Metode dalam penelitian ini adalah observasi atau survei lapangan. Lokasi penelitian ditentukan secara purposive sampling sebanyak 9 titik sampling. Sampel sedimen diambil menggunakan pipa paralon 4inch pada kedalaman 10-15 cm. Tahap pengumpulan data meliputi pengeringan, pemisahan sedimen, pembuatan supernatan, penyaringan dan identifikasi jenis mikroplastik menggunakan mikroskop binokuler dengan perbesaran 10x. Analisis data dilakukan secara statistik dan spasial. Analisis statistik menggunakan uji regresi dan korelasi antara jarak pengambilan sampel dan jumlah mikroplastik. Analisis spasial menggunakan software GIS untuk menghasilkan peta sebaran mikroplastik. Hasil penelitian menunjukkan bahwa terdapat 4 jenis mikroplastik di Pantai Sepanjang, antara lain fiber, film, fragmen, dan pelet. Jumlah mikroplastik tertinggi adalah jenis fiber sebanyak 60 partikel/gr di titik C. Hasil analisis regresi dan korelasi tertinggi terdapat pada jenis fragmen dengan nilai R2 = 0,27, yang menunjukkan hubungan antara jarak pengambilan sampel dan jumlah mikroplastik lemah. Hasil analisis spasial menunjukkan bahwa sebaran mikroplastik di Pantai Sepanjang dominan ke arah barat, dan semakin ke arah barat maka jenis mikroplastik semakin beragam. Sepanjang Beach at Gunungkidul District have tourism activities that led to plastic waste production. The microplastic will be considered harmful to biota, human, and environment. This study aims to identify the various types, numbers and distributions of microplastic at Sepanjang Beach. The method used in the study was a survey method. The research locations were determined by site survey using purposive sampling with 9 sample points. The sediment sample collection was conducted by using the PVC pipes 4inch in depth of 10-15 cm. The data collection step is drying, sediment separation, making of the supernatant, filtration, and identification using a binocular microscope with the 10x zoom. The analysis of data was conducted statistically and spatially. The statistical analysis was done by using the regression and correlation analysis between sampling distance and number of microplastics. The spatial analysis was done by using GIS software to create the map of microplastic distribution. The result showed that 4 types of microplastics at Sepanjang Beach were fiber, films, fragments, and pellets. The highest number of microplastics were fiber with 60 particles/gram in the sampling location of C. The highest of regression and correlation analysis were fragments with the value of R2 = 0,27, that indicated the weak correlation between sampling distance and number of microplastics. The spatial analysis showed that distribution of microplastics at Sepanjang Beach were dominant to the west, and the further to the west area, the type of microplastics were more diverse.
Pemodelan Perubahan Dasar Perairan (Bed Level Change) di Pantai Moro, Kabupaten Kendal Muhammad Chiesa Fathirayan; Hariyadi Hariyadi; Alfi Satriadi
Journal of Marine Research Vol 12, No 2 (2023): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v12i2.31252

Abstract

Pantai Moro, Gubugsari, merupakan salah satu daerah wisata yang potensial di Kabupaten Kendal. Pantai Moro memiliki menara pandang yang menjadi ciri khas. Faktor alam berupa perubahan dasar perairan di Pantai Moro perlu diperhatikan untuk menunjang kegiatan masyarakat. Tujuan dari penelitian ini adalah untuk mengetahui sebaran jenis sedimen dan perubahan dasar perairan berdasarkan hasil model. Pemodelan untuk mengetahui perubahan dasar perairan dilakukan menggunakan perangkat lunak MIKE21 modul Sand Transport dengan memasukkan data-data seperti batimetri, pasang surut, arus, gelombang, angin dan karakteristik sedimen dasar. Pemodelan dilakukan selama satu bulan setiap musim. Sedimen dasar di Perairan Pantai Moro berupa pasir, lanau, pasir lanauan dan lanau pasiran pada daerah pantai dan lanau pada daerah laut. Hasil pemodelan menunjukkan terjadi sedimentasi pada daerah dekat pantai sebesar 0,0945 m - 0,0005 m, dan terjadi erosi pada daerah muara sebesar 0,005 m.   Moro Beach, Gubugsari District is one of potential tourism areas in Kendal Regency. Moro Beach has sight tower, which is the hallmark of the area. Natural factor in the form of bed level changes is need to be considered to support community activities. The purpose of this study was to determine the distribution of sediment types and the bed level change of Moro Beach based on model result. The model is using MIKE 21 software ; Sand Transport (ST) module with input data of bathimetry, tides, current, waves, wind and seabed sediment. Sediment of Moro Beach is sand, silt, sandy silt and silty sand in beach area and silt in sea area. The result of modeling is indicates the sedimentation process near the beach with a value of 0,0945 m - 0,0005 m and erosion process in the estuary area with a value of 0,005 m.
Fenomena Infeksi Acute Hepatopancreatic Necrosis Disease pada Budidaya Udang Vaname di Kabupaten Bangkalan Amirul Suryana; Eka Nurrahema Ning Asih; Insafitri Insafitri
Journal of Marine Research Vol 12, No 2 (2023): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v12i2.35632

Abstract

Acute hepatopancreatic necrosis disease (AHPND) merupakan salah satu penyakit yang menginfeksi udang vaname (Litopenaeus vannamei) dengan tanda berupa udang lesu, hepatopankreas mengalami fenomena nekrosis, atrofi dan terlihat pucat. Infeksi penyakit ini minim publikasi, sehingga perlu dilakukan penelitian awal untuk menginspeksi keberadaan penyakit ini di udang vaname di Indonesia khususnya di tambak udang Bangkalan. Upaya ini dilakukan sebagai langkah antisipasi agar prevelensi AHPND tidak meluas di perairan Bangkalan. Tujuan penelitian ini adalah untuk mengetahui karakteristik infeksi dari penyakit AHPND pada budidaya udang vaname di Kabupaten Bangkalan.Pengambilan sampel udang menggunakan metode purposive sampling dari tambak udang bagian selatan dan utara Bangkalan. Identifikasi AHPNDdilakukan dengan metode nested polymerase chain reaction (nested PCR) menggunakan primer AP4. Hasil diagnosis morfologis yang diduga diakibatkan oleh penyakit AHPND terdapat pada sampel 1, 2, dan 3 dengan karakteristik pertumbuhan yang lambat dan pada sampel 9 berupa kotoran yang berwarna putih. Diagnosis genetik DNA VpAHPND menunjukkan sampel 1, 2,dan 3 positif penyakit AHPND dan sesuai gejala morfologis yang di dapat. Munculnya penyakit AHPND  di duga karena ketidaksesuainsuhudan pH dengan standar baku mutu untuk pemeliharaan udang vanamei. Data penelitian ini menjadi informasi awal tentang visualisi dan ciri-ciri udang yang terinfeksi AHPND yang dapat dimanfaatkan pembudidaya udang vaname agar waspada terhadap penyakit tersebut.  Acute hepatopancreatic necrosis disease (AHPND) is a disease that infects white shrimp (Litopenaeus vannamei) with signs of lethargic shrimp, hepatopancreas experiencing necrosis, atrophy, and pale appearance. The infection of this disease is minimally published, so it is necessary to conduct preliminary research to inspect the presence of this disease in white shrimp in Indonesia, especially in Bangkalan shrimp ponds. This effort is carried out as an anticipatory step so that the prevalence of AHPND does not expand in Bangkalan waters. The purpose of this study was to determine the characteristics of infection from AHPND disease in vaname shrimp culture in Bangkalan Regency. A sampling of shrimp using the purposive sampling method from shrimp ponds in the south and north of Bangkalan. Identification of AHPND was done by nested PCR method using AP4 primer. The results of the morphological diagnosis suspected to be caused by AHPND were found in samples 1, 2, and 3 with slow growth characteristics and sample 9 in the form of white feces. Genetic diagnosis of VpAHPND DNA showed samples 1, 2, and 3 were positive for AHPND disease and according to the morphological symptoms obtained. The emergence of AHPND disease is thought to be due to the incompatibility of temperature and pH with quality standards for the maintenance of vaname shrimp. The data of this study serve as initial information about the visualization and characteristics of shrimp infected with AHPND that can be used by vaname shrimp farmers to be aware of the disease.
Antimicrobial Potential of Gorgonian Alcyonium sp. Associated Bacteria Against Human Pathogenic Skin Diseases Avicenna Wijayanto; Agus Sabdono; Endang Sri Lestari; Mada Triandala Sibero
Journal of Marine Research Vol 12, No 2 (2023): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v12i2.35042

Abstract

Skin diseases are common in tropical countries due to microbial pathogens. The use of antibiotics is one of the efforts to treat skin diseases. However, the misuse and overuse of antibiotics can stimulate the emergence of multi-drug resistance (MDR) pathogens. This study focused on obtaining gorgonian-associated bacteria with antimicrobial activity against Cutibacterium acnes, Staphylococcus epidermidis, Malassezia furfur, and Candida albicans. This research procedure includes sampling, isolation, and purification of bacteria, antimicrobial test with agar plug method, morphological characterization, and molecular identification. The study results showed that one isolate of gorgonian-associated bacteria Alcyonium sp. from Seruni Island, Karimunjawa has antimicrobial activity against Cutibacterium acnes, Staphylococcus epidermidis, and Candida albicans. The results of molecular identification showed that isolate SE.4.2 had a similarity of 98.96% with Pseudoalteromonas shioyasakiensis.

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