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All Journal JFMR (Journal of Fisheries and Marine Research)
Nizery, Sefhanissa Puspa Retno
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Engineering Environmental Science

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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.
Komposisi dan Dinamika Sampah Laut di Kawasan Ekowisata Mangrove Wonorejo, Surabaya: Composition and Dynamics of Marine Debris in the Wonorejo Mangrove Ecotourism Area, Surabaya Isdianto, Andik; Yanuhar, Uun; Lelono, Tri Djoko; Susilo, Edi; Ramadhanti, Nur Fa'izah Fitri; Nizery, Sefhanissa Puspa Retno; Fathah, Aulia Lanudia; Batoro, Jati; Putri, Berlania Mahardika; Wardana, Novar Kurnia; Puspitasari, Intan Dwi
JFMR (Journal of Fisheries and Marine Research) Vol. 8 No. 3 (2024): JFMR on November
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.2024.008.03.12

Abstract

Penelitian ini bertujuan untuk mengkaji pengaruh muson dan arus laut terhadap distribusi dan komposisi sampah di kawasan Ekowisata Mangrove Wonorejo, Surabaya. Dengan menggunakan metode survei garis pantai di lima lokasi penelitian, data sampah dikumpulkan pada Maret, Mei, dan September 2024. Analisis terfokus pada pengukuran jumlah dan berat sampah terutama plastik, karet, kain, dan bahan lainnya. Hasil menunjukkan bahwa sampah plastik adalah yang paling dominan, mencapai 95,33% dari total berat sampah pada September, sedangkan pada bulan Maret dan Mei, jumlahnya juga sangat tinggi. Lonjakan signifikan dalam sampah karet tercatat pada Mei, kemungkinan disebabkan oleh kegiatan rekreasi yang meningkat selama musim liburan. Pola perubahan sampah menunjukkan bahwa muson barat (Desember-Maret) yang membawa curah hujan tinggi menyebabkan peningkatan akumulasi sampah di pantai, terutama plastik dan karet, karena aliran permukaan yang membawa sampah dari daratan ke pesisir. Sebaliknya, pada muson timur (Juni-September), yang umumnya lebih kering, terjadi penurunan jumlah sampah yang terakumulasi, terutama plastik, karena arus laut yang bergerak menjauh dari pantai mengurangi penumpukan sampah di pesisir. Mangrove berperan penting sebagai filter alami, menangkap dan mengurangi sampah yang masuk ke ekosistem pesisir. Berdasarkan temuan ini, disarankan peningkatan fasilitas pengelolaan sampah dan edukasi publik tentang pengurangan penggunaan plastik sekali pakai untuk mengurangi dampak negatif sampah pada ekosistem mangrove.   This study was conducted to understand the influence of monsoons and ocean currents on the distribution and composition of waste in the Wonorejo Mangrove Ecotourism, Surabaya. Using a shoreline survey method at five locations, waste data was collected in March, May, and September 2024. The analysis focused on measuring the amount and weight of waste, especially plastic, rubber, cloth, and other materials. The results showed that plastic waste was the most dominant, reaching 95.33% of the total weight of waste in September, while in March and May, the amount was also very high. A significant spike in rubber waste was recorded in May, possibly due to increased recreational activities during the holiday season. The pattern of waste changes showed that the west monsoon (December-March) which brought high rainfall caused an increase in the accumulation of waste on the beach, especially plastic and rubber, due to surface flow carrying waste from the mainland to the coast. Conversely, in the east monsoon (June-September), which is generally drier, there was a decrease in the amount of accumulated waste, especially plastic, because the ocean current moving away from the coast reduced the accumulation of waste on the coast. Mangroves play an important role as natural filters, capturing and reducing waste that enters the coastal ecosystem. Based on these findings, it is recommended to improve waste management facilities and public education on reducing the use of single-use plastics to reduce the negative impact of waste on the mangrove ecosystem.
Co-Authors Andik Isdianto Arief Setyanto Edi Susilo Fathah, Aulia Lanudia Gibran, Khalil Ishaq, Syafrial Yanuar Jati Batoro Muhammad Arif Asadi, Muhammad Arif oktiyas muzaky Luthfi, oktiyas muzaky Pattisahusiwa, Annisa Shafira P. Puspitasari, Intan Dwi Putra, Muhammad Naufal Eka Putri, Berlania Mahardika Ramadhanti, Nur Fa'izah Fitri Saputra, Tedy Eko Supriyadi Supriyadi Syarief, Salsabila Nazmie Putri Tri Djoko Lelono Uun Yanuhar