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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences JFMR (Journal of Fisheries and Marine Research)
Julianinda, Yanida Azhari
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Engineering Environmental Science

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STUDI PUSTAKA: DISTRIBUSI DAN SEBARAN LAMUN DI JAWA TIMUR Julianinda, Yanida Azhari; Dewi, Citra Satrya Utama; Kasitowati, Rarasrum Dyah; Kurniawan, Fery
JFMR (Journal of Fisheries and Marine Research) Vol. 6 No. 1 (2022): JFMR on April
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.2022.006.01.14

Abstract

Sebagai ekosistem, fungsi ekologis yang unik dari padang lamun memberikan banyak manfaat bagi organisme yang tinggal di wilayah pesisir. Namun saat ini telah terjadi perubahan ekosistem dan keanekaragaman hayati yang terjadi pada skala lokal dan global. Penelitian ini, bertujuan untuk menggambarkan wilayah distribusi lamun di Indonesia dan Jawa Timur yang dapat menjadi acuan mengenai sebaran, tipe substrat dan habitat dari lamun. Data yang digunakan pada penelitian ini merupakan data 5 tahun terakhir (2016-2021). Hasil penelitian ini pada wilayah Jawa Timur ditemukan sebanyak 11 jenis lamun di 8 lokasi penelitian diantaranya Lamongan, Gresik, Situbondo, Banyuwangi, Malang, Pacitan, Bangkalan, dan Sumenep. Jenis lamun yang ditemukan di Jawa Timur diantaranya Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Cymodocea serrulata, Haludole pinifolia, Halodule uninervis, Halophila decipiens, Halophila ovalis, Halophila minor, Syringodium iseotifolium, dan Thalassodendron ciliatum. Kondisi lamun di Jawa Timur juga tergolong cukup baik dengan nilai kerapatan tertinggi sebesar 2524-5592 ind/m2 pada Perairan Situbondo dan kerapatan jenis terendah sebesar 4,42-13,05 ind/m2 pada Perairan Banyuwangi. Nilai persentase tutupan lamun tertinggi sebesar 37-62% di Perairan Situbondo dan nilai tutupan terendah sebesar 3,56-16,44% di Perairan Malang.
Pengaruh Variasi Suhu Permukaan Laut (Spl) dan Klorofil-a Terhadap Tangkapan Ikan di Perairan Muncar, Banyuwangi, Jawa Timur dari Tahun 2018-2022: The Impact of Variation in Sea Surface Temperature (Sst) and Chlorophyll-a on Fish Catch in Muncar Waters, Banyuwangi, East Java from 2018 To 2022 Julianinda, Yanida Azhari; Iranawati, Feni; Yona, Defri; Sartimbul, Aida
JFMR (Journal of Fisheries and Marine Research) Vol. 9 No. 2 (2025): JFMR on July
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.2025.009.02.3

Abstract

Variabilitas Suhu Permukaan Laut (SPL) dan sebaran klorofil-a di Perairan Muncar (Selat Bali) sangat mempengaruhi hasil tangkapan ikan yang didaratkan di Pelabuhan Perikanan Pantai (PPP) Muncar. Informasi mengenai hal ini penting untuk kajian pendugaan dinamika penangkapan ikan melalui penginderaan jauh. Penelitian ini bertujuan untuk mengetahui variabilitas parameter oseanografi pada tahun 2018 hingga 2022, serta dinamika penangkapan ikan di Perairan Selat Bali, khususnya di PPP Muncar. Data yang digunakan dalam penelitian ini meliputi SPL dan klorofil-a dari satelit Aqua-MODIS level 3 dan data produksi ikan dari PPP Muncar selama 5 tahun. Hasil analisis menunjukkan fluktuasi SPL dan konsentrasi klorofil-a dengan keterkaitan erat antara keduanya. Selama periode tersebut, dinamika penangkapan ikan menunjukkan peningkatan produksi ikan lemuru dan layang pada tahun 2019, meskipun terjadi penurunan produksi pada tahun 2022 akibat peningkatan SPL yang berdampak pada stok ikan. Analisis hubungan antara anomali SPL dan klorofil-a menunjukkan bahwa konsentrasi klorofil-a meningkat saat SPL menurun dengan korelasi -0.378. Fenomena penurunan SPL di perairan Selat Bali menyebabkan adanya peningkatan nilai klorofil-a di perairan yang juga mendukung peningkatan pada hasil produksi ikan. Sedangkan peningkatan SPL yang berkontribusi pada menurunnya hasil produksi ikan. Pemahaman mengenai keterkaitan antara SPL dan klorofil-a dapat digunakan salah satu pertimbangan dalam merumuskan strategi pengelolaan sumber daya ikan yang lebih berkelanjutan, guna meningkatkan produksi perikanan di wilayah tersebut di masa depan.   Sea Surface Temperature (SST) variability and chlorophyll-a distribution in the Muncar Waters (Bali Strait) have been demonstrated to significantly impact the catch of fish landed at Muncar Fishing Port. This information is crucial for the study of estimating fishing dynamics through remote sensing. The present study aims to ascertain the variability of oceanographic parameters from 2018 to 2022, as well as the dynamics of fishing in the Bali Strait Waters, with a particular focus on the Muncar Fishing Port.The study utilizes data from the Aqua-MODIS satellite level 3, which includes SPL and chlorophyll-a measurements, along with fish production data from PPP Muncar over a five-year period. The analysis revealed fluctuations in SST and chlorophyll-a concentrations, with a close relationship between the two parameters. During the observed period, fishing dynamics exhibited an increase in Bali Sardinella and Indian Scad production in 2019, followed by a decrease in 2022, attributed to an increase in SPL, which impacted fish stocks. The analysis revealed a negative correlation between SPL and chlorophyll-a anomalies, with chlorophyll-a concentrations increasing as SPL decreased, as indicated by a correlation coefficient of -0.378. The observed phenomenon of decreasing SPL in the waters of the Bali Strait is concomitant with an increase in chlorophyll-a concentration, thereby supporting an increase in fish production. Conversely, an increase in SPL is associated with a decrease in fish production. A comprehensive understanding of the intricate relationship between SPL and chlorophyll-a can inform the development of more sustainable fish resource management strategies, with the ultimate goal of enhancing fisheries production in the region.
Changes in Pelagic Fisheries Composition in Relation to Climate Change: A Case Study of Prigi Waters, East Java Julianinda, Yanida Azhari; Iranawati, Feni; Yona, Defri; Khaidar, Zulfan; Sartimbul, Aida
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 31, No 1 (2026): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.31.1.15-25

Abstract

The variability of Sea Surface Temperature (SST) and chlorophyll-a distribution in the southern waters of East Java is heavily influenced by the Indian Ocean Dipole (IOD) phenomenon. This study examines oceanographic parameter variability, their relationship with the IOD from 2003 to 2014, and fishing dynamics in the southern waters of East Java, particularly at PPN Prigi. Data utilized include SST and chlorophyll-a from Aqua-MODIS satellites, the Dipole Mode Index (DMI), and 12 years of fish production records. The analysis reveals significant fluctuations in SST and chlorophyll-a, with a strong inverse relationship (correlation: –0.677), where chlorophyll-a concentrations rise as SST decreases. Positive IOD events reduce SST, while negative IOD events increase SST, with correlations of –0.591 for SST and IOD and 0.601 for chlorophyll-a and IOD. During the positive IOD events of 2006–2008, SST decreased, leading to increased fish production. Conversely, the negative IOD in 2010 raised SST, contributing to a decline in fish stocks. Over the 12-year period, a notable increase in Bali Sardinella and skipjack production was observed, despite a sharp decrease in 2010 caused by higher SST levels. This study highlights the importance of understanding the interactions between SST, chlorophyll-a, and IOD in developing sustainable fisheries management strategies. These insights can support efforts to optimize fish resource utilization, mitigate the impacts of climate variability, and ensure long-term fisheries productivity in the southern waters of East Java, particularly for strengthening adaptive resource planning within climate-sensitive pelagic ecosystems and supporting informed decision-making for regional fisheries policies and sustainable blue-growth initiatives.
Co-Authors Aida Sartimbul Defri Yona Dewi, Citra Satrya Utama Feni Iranawati, Feni Fery Kurniawan Khaidar, Zulfan Rarasrum Dyah Kasitowati, Rarasrum Dyah