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All Journal Journal of Environmental Engineering and Sustainable Technology JFMR (Journal of Fisheries and Marine Research) Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan
Muhammad Arif Asadi, Muhammad Arif
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Environmental Science Mechanical Engineering

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Kondisi Tutupan Turf Algae dan Kualitas Perairan di Selat Sempu, Malang: Condition of Turf Algae Coverage and Water Quality in the Sempu Strait, Malang Isdianto, Andik; Syarief, Salsabila Nazmie Putri; Gibran, Khalil; Putra, Muhammad Naufal Eka; Pattisahusiwa, Annisa Shafira P.; Ishaq, Syafrial Yanuar; Saputra, Tedy Eko; Nizery, Sefhanissa Puspa Retno; Asadi, Muhammad Arif; Setyanto, Arief; Putri, Berlania Mahardika; Fathah, Aulia Lanudia; Wardana, Novar Kurnia; Supriyadi, Supriyadi; Luthfi, Oktiyas Muzaky
JFMR (Journal of Fisheries and Marine Research) Vol. 8 No. 1 (2024): 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.2024.008.01.11

Abstract

Turf algae merupakan salah satu organisme yang menjadi indikator kesehatan ekosistem terumbu karang. Organisme ini bahkan dapat mendominansi suatu daerah dan menekan angka tutupan terumbu karang dalam kondisi perairan tertentu. Hal ini tentunya menjadi ancaman bagi kelestarian suatu ekosistem yang berdampak pada perekonomian masyarakat sekitar melalui jumlah hasil tangkapan ikan. Maka dari itu penelitian ini dilaksanakan guna melakukan monitoring pada luas tutupan turf algae di Perairan Selat Sempu pada bulan Agustus tahun 2023. Metode yang digunakan yaitu sepuluh Underwater Photo Transect (UPT) pada kelima stasiun dengan panjang transek sejauh 100 meter yang dibantu oleh transek kuadran berukuran 1 x 1 m. Penelitian ini menggunakan beberapa data parameter perairan yang memengaruhi luas tutupan turf algae seperti suhu, salinitas, kecerahan, DO, arus, sedimentasi, pH, nitrat, dan fosfat. Hasil yang diperoleh yaitu tutupan tertinggi terjadi pada stasiun Banyu Tawar sebesar 1.3042,05 cm2 dan tutupan terendah pada stasiun Waru-Waru sebesar 488,7 cm2. Data parameter perairan yang telah diukur memiliki nilai yang optimal dengan pH yang memiliki rentang 7,5–8,1 dissolved oxygen (DO) pada rentang 6,8–7 mg/L, salinitas 34,2-34,4‰,  nitrat 0,9-2,1 mg/L, dan fosfat 0,03-0,17 mg/L, di mana nilai parameter ini mendukung pertumbuhan turf algae.Turf algae is an organism that is an indicator of the health of coral reef ecosystems. This organism can even dominate an area and suppress coral reef cover in certain water conditions. This is of course a threat to the sustainability of an ecosystem which has an impact on the economy of the surrounding community through the amount of fish caught. Therefore, this research was carried out to monitor the extent of turf algae cover in the Sempu Strait waters in August 2023. The method used was ten Underwater Photo Transects (UPT) at five stations with a transect length of 100 meters assisted by quadrant transects measuring 1 x 1 m. This research uses several water parameter data that influence the extent of turf algae cover, such as temperature, salinity, brightness, DO, currents, sedimentation, pH, nitrate and phosphate. The results obtained were that the highest cover occurred at Banyu Tawar station at 1,3042.05 cm2 and the lowest cover at Waru-Waru station at 488.7 cm2. The water parameter data that has been measured has optimal values with pH having a range of 7.5–8.1 dissolved oxygen (DO) in the range 6.8–7 mg/L, salinity 34.2-34.4‰, nitrate 0.9-2.1 mg/L, and phosphate 0.03-0.17 mg/L, where these parameter values support the growth of turf algae.
DISTRIBUTION OF DISSOLVED HEAVY METAL Hg AND Pb IN LAMONGAN COASTAL WATERS, INDONESIA Aliviyanti, Dian; Yona, Defri; Asadi, Muhammad Arif; Putri, Anggi Andrianah; Nabilah, Mariah
Journal of Environmental Engineering and Sustainable Technology Vol 10, No 02 (2023)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776//ub.jeest.2023.010.02.5

Abstract

Lamongan Regency has a fairly progressive fisheries sector with high fishing activity, such as the fishing industry and ports, especially in the Paciran and Brondong subdistricts. On the other hand, rapid fishing activities can also cause the entry of pollutants such as heavy metals and have the potential to reduce water quality in the area. The aim of this research is to analyze water conditions based on physical and chemical parameters as well as the distribution of dissolved heavy metal Hg and Pb in the fisheries industrial area and port of Lamongan Regency. The research was carried out using a purposive sampling method at seven stations along the waters of both Brondong and Paciran Districts. The data used in this research includes water quality parameters and dissolved heavy metal Hg and Pb. Analysis of heavy metal content was carried out in the laboratory using an Atomic Absorption Spectroscopy (AAS) instrument. The results showed that the heavy metal Hg at all stations was not detected by AAS because its concentration was very low. Meanwhile, the heavy metal Pb shows varying values at all stations with a range of 0.08 mg/L – 1.88 mg/L. The concentration of the heavy metal Pb at most location points has exceeded the limits set by Indonesian Government Regulations. The results of statistical analysis show that there is a relationship between temperature and pH and the concentration of the heavy metal Pb in water. 
Plastic debris characteristics and the effect of wind on Bawean Island Beaches, East Java, Indonesia Albarra, Nurhafizh Sri; Yona, Defri; Asadi, Muhammad Arif; Sari, Syarifah Hikmah Julinda; Lestariadi, Riski Agung; Amirudin, Akhmad
Depik Vol 13, No 3 (2024): DECEMBER 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.3.36620

Abstract

Characteristics of plastic debris were assessed among two types of beaches on Bawean Island (windward and leeward) to analyze its sources and long-term effects. Plastic debris was collected inside a 5 x 5 meter transect with five transect plots on each beach per 20 meters. Samplings were carried out three times at intervals of seven days from six different beaches. The average abundances of plastic debris were almost similar between leeward (0.1690.123 pcs m-2) and windward beaches (0.8410.577 pcs m-2). On the other hand, in terms of weight, leeward beaches contained a very low value of debris (0.9270.746 g m-2) compared to windward beaches (4.4793.551 g m-2). Sheets on the windward beaches and wholes on the leeward beaches dominate the shape of plastic debris with the average size was 1520 cm. The color on both type of beaches was dominated by white (38%) and blue (12%). The weathering intensity is 48% on the leeward beach and 52% on the windward beach. The absence of significant differences in size, color, and weathering intensity implies that the debris found came from the same source. The large size and low weathering intensity of the plastic debris means that the debris has not been exposed to hydro-oceanographic factors for an extended period and they came from a local source. The difference in abundance and shape of plastic debris suggests that wind still plays a vital role in shaping the characteristics of plastic debris on Bawean Island.Keywords:Marine DebrisPlastic WeatheringWind DirectionMarine PollutionMacroplastic
Plastic debris characteristics and the effect of wind on Bawean Island Beaches, East Java, Indonesia Albarra, Nurhafizh Sri; Yona, Defri; Asadi, Muhammad Arif; Sari, Syarifah Hikmah Julinda; Lestariadi, Riski Agung; Amirudin, Akhmad
Depik Vol 13, No 3 (2024): DECEMBER 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.3.36620

Abstract

Characteristics of plastic debris were assessed among two types of beaches on Bawean Island (windward and leeward) to analyze its sources and long-term effects. Plastic debris was collected inside a 5 x 5 meter transect with five transect plots on each beach per 20 meters. Samplings were carried out three times at intervals of seven days from six different beaches. The average abundances of plastic debris were almost similar between leeward (0.1690.123 pcs m-2) and windward beaches (0.8410.577 pcs m-2). On the other hand, in terms of weight, leeward beaches contained a very low value of debris (0.9270.746 g m-2) compared to windward beaches (4.4793.551 g m-2). Sheets on the windward beaches and wholes on the leeward beaches dominate the shape of plastic debris with the average size was 1520 cm. The color on both type of beaches was dominated by white (38%) and blue (12%). The weathering intensity is 48% on the leeward beach and 52% on the windward beach. The absence of significant differences in size, color, and weathering intensity implies that the debris found came from the same source. The large size and low weathering intensity of the plastic debris means that the debris has not been exposed to hydro-oceanographic factors for an extended period and they came from a local source. The difference in abundance and shape of plastic debris suggests that wind still plays a vital role in shaping the characteristics of plastic debris on Bawean Island.Keywords:Marine DebrisPlastic WeatheringWind DirectionMarine PollutionMacroplastic
PERKEMBANGAN PENYAKIT KARANG HIAS KOLANG KALING KEMBANG (Catalaphyllia jardinei) OLEH CACING ACOEL FLATWORM (Waminoa sp.) DI PERAIRAN LAUT GILIMANUK, JEMBRANA BALI Akbar, Dzikrillah; Asadi, Muhammad Arif
JFMR (Journal of Fisheries and Marine Research) Vol. 5 No. 2 (2021): JFMR
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.2021.005.02.12

Abstract

Terumbu karang adalah salah satu ekosistem yang kompleks, dimana komponen penyusun utama ekoisitem tersebut adalah karang keras. Indonesia merupakan salah satu wilayah Coral Triangle yang aktif melakukan ekspor karang hingga tahun 2017, namun pada pertengahan tahun 2018 ekspor karang hias telah dilarang. Perusahaan hanya mampu melakukan produksi (transplan) dan perawatan karang hias yang di budidaya. Karang kolang-kaling kembang atau elegance coral (Catalaphyllia jardineii) merupakan salah satu karang hias yang dibudidaya dengan kuota besar di area Bali karena memiliki nilai jual tinggi. Koloni cacing acoel flatworm bersifat parasit merambah pada sejumlah karang hias budidaya C. jardineii pada wilayah budidaya di perairan Gilimanuk, Jembrana Bali. Pengamatan perkembangan flatworm dilakukan selama dua kali dalam jeda waktu empat hari pada rak budidaya yang berisi koloni karang hias C. jardineii.  Presentase tutupan flatworm pada pengamatan pertama sebesar 42.76% dan pada pengamatan kedua naik dengan nilai presentase 46.84%. Hasil tersebut diduga akibat waktu kematangan usia, waktu penetasan telur yang cepat serta kesesuaian habitat acoel flatworm pada area pengamatan.
Co-Authors Akbar, Dzikrillah Akhmad Amirudin Albarra, Nurhafizh Sri Aliviyanti, Dian Andik Isdianto Arief Setyanto Defri Yona Fathah, Aulia Lanudia Gibran, Khalil Ishaq, Syafrial Yanuar Lestariadi, Riski Agung Nabilah, Mariah Nizery, Sefhanissa Puspa Retno oktiyas muzaky Luthfi, oktiyas muzaky Pattisahusiwa, Annisa Shafira P. Putra, Muhammad Naufal Eka Putri, Anggi Andrianah Putri, Berlania Mahardika Saputra, Tedy Eko Supriyadi Supriyadi Syarief, Salsabila Nazmie Putri Syarifah Hikmah Julinda Sari