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All Journal Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Biosel: Biologi Science and Education Chemistry Indonesian Journal of Chemical Research Biopendix: Jurnal Biologi, Pendidikan dan Terapan Agrikan: Jurnal Agribisnis Perikanan Barakuda 45 JUSTE (Journal of Science and Technology) Innovative: Journal Of Social Science Research GUNAVATTA
Ismail, Irwan
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Bioakumulasi Logam Berat Merkuri (Hg) Pada Mangrove Jenis Rhizophora Mucronata Di Teluk Kayeli Kabupaten Buru Ismail, Irwan; Mangesa, Rosita; Irsan, Irsan
Biosel Biology Science and Education Vol. 9 No. 2 (2020): BIOSEL (Biology Science and Education: Jurnal Penelitian Sains dan Pendidikan)
Publisher : INSTITUT AGAMA ISLAM NEGERI AMBON

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (479.031 KB) | DOI: 10.33477/bs.v9i2.1637

Abstract

Kayeli Bay is a water in Buru Regency which has very important value in terms of ecological and economic functions. During its development, the ecosystem in Kayeli Bay bears the burden of pollution, especially heavy metal mercury as a result of the people's gold mining on Buru Island which uses Hg to get pure gold. Hg can accumulate in the environment, especially deposited in the sediments in Kayeli Bay waters. Mangrove plants that generally grow in estuary and coastal environments are a place for sediment accumulation. This plant has the ability to absorb and accumulate heavy metals, one of which is R. mucronata. This study aims to analyze the concentration of heavy metal Hg in mangroves of R. mucronata and sediments, and to analyze the bioaccumulation of heavy metal Hg in R. mucronata in Kayeli Bay, Buru Regency. Samples were taken from 3 stations, namely the Anahoni River Estuary (Station I), the Wailata River Estuary (II Station) and the Waeapo River Estuary (III Station). Each station has 2 sampling points (replicates). Determination of the concentration of Hg metal in the sample using the CV AAS method. The average value of Hg concentration in the roots was higher than the bark and leaves of the mangrove R. mucronata, but the concentration was lower than the sediment and was still below the critical value of Hg for plants. The average value of sediment Hg concentration is still below the sediment quality standard. In this study, R. mucronata mangroves were excluder and phytostabilized, where there was a limitation on the absorption of heavy metal Hg from water and sediment and the most Hg accumulation was found in the roots. Keywords: Bioaccumulation, Mercury, Rhizophora mucronata, Kayeli Bay
Pemberian Pupuk Organik Cair (POC) Ekoenzim Terhadap Kepadatan Chlorella sp. Pada Skala Laboratorium Warayaan, Finansius Ferdi; Rahayaan, Saraswati; Wusuk, Rumiati; Ismail, Irwan
Innovative: Journal Of Social Science Research Vol. 5 No. 4 (2025): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v5i4.19701

Abstract

Mikroalga Chlorella sp。 Meskipun berpotensial sebagai pakan alami untuk akuakultur, namun media kultur sintetis seperti KW 21 memiliki harganya relatif mahal dan tidak ramah terhadap lingkungan. Penelitian ini menganalisis efektivitas pupuk organik cair (POC) dari ekoenzim berbasis limbah buah dan sayuran sebagai media kultur alternatif. Rancangan ACAK Lengkap (RAL) menggunakan empat perlakuan: Kontrol (KW 21 1 mL/L), POC 5, 10, dan 15 mL/L, masing -masing memiliki tiga pengulangan. Parameter utama adalah kepadatan sel harian selama 13 hari pengamatan. Hasil ANOVA menunjukkan bahwa perlakuan memiliki efek yang signifikan pada kepadatan sel (F = 9,321; p <0,001; r² = 0,704). Perlakuan POC ekoenzim 5 ml/L menghasilkan kepadatan tertinggi (7,227,77 x 10⁴ sel/mL) pada hari ke- 8, yang sangat berbeda nyata dari perlakuan lain. Kualitas air optimal untuk semua perlakuan. Dosis ekoenzim 5 ml/L telah terbukti efektif dan dapat menjadi media budidaya alternatif dan ramah lingkungan.
The Effect of Planting Depth on the Vegetative Growth of Caulerpa racemosa in a Tarpaulin Tank Cultivation System Ismail, Irwan; Dangeubun, Jane Lulinda; Madubun, Usman; Rahantoknam, Santi Penina Tua
Barakuda 45: Jurnal Ilmu Perikanan dan Kelautan Vol 7 No 2 (2025): November
Publisher : Fakultas Perikanan dan Ilmu Kelautan Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/barakuda45.v7i2.674

Abstract

Caulerpa racemosa is a type of green macroalgae with high economic value that has the potential to be cultivated intensively. This study aimed to evaluate the effect of planting depth on the vegetative growth of Caulerpa racemosa cultivated in a tarpaulin tank system. Three planting depths were tested: 20 cm, 40 cm, and 60 cm. Vegetative growth parameters observed included Absolute Growth in Weight, Absolute Growth in Stolon Length, and Absolute Growth in Ramuli Length over a defined cultivation period. The results indicated that the 60 cm planting depth yielded the highest vegetative growth, with mean weight reaching 137.67±3.21 g, stolon length 30.04±0.54 cm, and ramuli length 25.29±2.90 cm. Statistical analysis revealed a significant difference only in stolon length between the 60 cm and 40 cm treatments, while differences in weight and ramuli length were not statistically significant. Overall, the data suggest that a 60 cm planting depth provides a more stable microenvironment in terms of light intensity, water temperature, and protection from physical disturbances, thereby enhancing biomass accumulation and vegetative structure development in Caulerpa racemosa. Therefore, a planting depth of 60 cm is recommended as the optimal depth for cultivating Caulerpa racemosa in tarpaulin-based culture systems.
Sosialisasi Peningkatan Produktivitas Tani Dan Nelayan Ohoi Elaar Let Anggeline Lioni Amahorseja; Muhammad Askin Putra Fanela; Irwan Ismail; Elen Marta Lutur; Salahuddin Bachmid; Pradina A Sukirno
GUNAVATTA : Jurnal Pengabdian Masyarakat Vol 1 No 01 (2025): Gunavatta : Jurnal Pengabdian Masyarakat
Publisher : Lembaga Penjaminan Mutu Universitas Abdurachman Saleh Situbondo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36841/gunavatta.v1i01.5926

Abstract

Pengasapan merupakan salah satu metode pengawetan daging yang telah lama diterapkan dan secara luas diterima konsumen dari berbagai belahan dunia. Pada Kabupaten Maluku Tenggara, ikan asar merupakan salah satu bahan pangan yang menjadi idola masyarakat. Ikan asap ini masih diolah secara tradisional yaitu dengan cara ikan dijepit pada belahan bambu kemudian diasapi dengan menggunakan sumber asap dari kayu maupun tempurung kelapa. Penerapan teknologi asap cair yang dapat diterapkan oleh nelayan dan petani di Ohoi Elaar Let melalui penyuluhan tentang “Peningkatan Produktifitas Tani dan Nelayan” bertujuan untuk memperkenalkan teknologi asap cair dan memberi pengetahuan serta ketrampilan bagi nelayan maupun petani dalam membuat asap cair dan mengolah ikan asap. Kegiatan ini juga diharapkan berdampak dalam meningkatkan atensi akademisi terhadap kelompok-kelompok masyarakat yang berpotensi untuk dikembangkan sebagai calon wirausaha baru serta meningkatkan kegiatan pengembangan dan penerapan ipteks dari akademisi terhadap masyarakat. Dari hasil kegiatan yang dilakukan maka dapat disimpulkan bahwa penerapan teknologi asap cair merupakan salah satu cara alternatif dalam pengolahan ikan asap yang baru diketahui oleh para nelayan pengolah ikan asap dan petani di Ohoi Elaar Let dan pengolahan ikan asap dengan menggunakan asap cair ternyata bisa menjawab kendala yang ditemui oleh nelayan pengolah ikan asap di Ohoi Elaar Let.
Produksi Benih Ikan Kakap Putih Berkualitas Untuk Meningkatkan Ekonomi UMKM Petrus Paulus Letsoin; Irwan Ismail; Moses Tjoanda; Jane Lulinda Dangeubun; Ongen R. Lekirupy
GUNAVATTA : Jurnal Pengabdian Masyarakat Vol 1 No 2 (2025): Gunavatta : Jurnal Pengabdian Masyarakat
Publisher : Lembaga Penjaminan Mutu Universitas Abdurachman Saleh Situbondo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36841/gunavatta.v1i2.6887

Abstract

Barramundi (Lates calcarifer) is a highly potential aquaculture commodity in Indonesia. However, UMKM Alstonia currently faces significant challenges, particularly in the production of fry and fish feed. One of the main issues is the high cost of feed, which limits the quality and quantity of feeding. As a result, the fish receive poor nutrition, making them more susceptible to diseases and leading to high mortality rates during the rearing period up to harvest. Therefore, increasing the production of high-quality feed is crucial to support successful aquaculture and drive the economic growth of fishery-based MSMEs. Quality feed enhances productivity, business efficiency, and the competitiveness of fish farmers. Strengthening the capacity of UMKM Alstonia through training in feed formulation and larval rearing becomes essential. This initiative also serves as a practical learning platform for students to engage directly with the community, promoting technology transfer and skill development in aquaculture practices.
Sosialisasi Pemanfaatan Pupuk Organik Cair Sebagai Pakan Alami Pada Kelompok KJA Morela Ohoi Sathean Irwan Ismail; Elen M Lutur; Anggeline L Amahorseja; Muhammad Askin Putra Fanela; Salahuddin Bachmid; Pradina A Sukirno; Yanto Anwar
GUNAVATTA : Jurnal Pengabdian Masyarakat Vol 1 No 2 (2025): Gunavatta : Jurnal Pengabdian Masyarakat
Publisher : Lembaga Penjaminan Mutu Universitas Abdurachman Saleh Situbondo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36841/gunavatta.v1i2.6785

Abstract

Mikroalga merupakan organisme yang mampu memproduksi makanan sendiri dengan proses fotosintesis, sehingga memainkan peran penting dalam kehidupan makhluk hidup di lautan. Beragam jenis mikroalga telah dibudidayakan sebagai pakan alami karena mengandung sumber protein yang sangat tinggi. Masalah yang muncul dalam proses kultur adalah banyak pembudidaya masih menggunakan pupuk kimia seperti Urea, Sp Pro 36, dan Za untuk mengkultur mikroalga, meskipun pupuk tersebut harganya cukup tinggi, sulit diperoleh, dan tidak ramah terhadap lingkungan. Untuk mengurangi penggunaan pupuk kimia yang berlebihan, kami memperkenalkan pupuk organik cair dari air cucian beras dan air kelapa sebagai alternatif ramah lingkungan untuk pakan alami kepada kelompok nelayan KJA Morela Ohoi Sathean melalui penyuluhan mengenai “Pemanfaatan Pupuk Organik Cair Sebagai Pakan Alami Pada Kelompok KJA Morela Ohoi Sathean.” Metode yang diterapkan mencakup ceramah, demonstrasi, dan diskusi. Hasil yang didapat dari kegiatan penyuluhan dan pelatihan adalah pertama, pupuk organik cair yang berasal dari air cucian beras dan air kelapa merupakan salah satu pilihan dalam pembuatan pupuk untuk pakan alami yang baru saja diketahui oleh kelompok nelayan KJA Morela Ohoi Sathean. Kedua Pemberian Pupuk organik cair dari air cucian beras dan air kelapa sebagai pupuk untuk pakan alami terbukti mampu mengatasi masalah yang dihadapi oleh kelompok nelayan yang membudidayakan benih ikan sehingga bisa menghindari penggunaan pupuk kimia.
Combination of Household and Plant-Based Wastes as Natural Fertilizers for Rotifer (Brachionus sp.) Biomass Production Irwan Ismail; Elen Marta Lutur; Ongen R. Lekirupy
Barakuda 45: Jurnal Ilmu Perikanan dan Kelautan Vol 8 No 1 (2026): April - June
Publisher : Fakultas Perikanan dan Ilmu Kelautan Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/barakuda45.v8i1.793

Abstract

Rotifers (Brachionus sp.) are widely recognized as a crucial live feed in aquaculture hatcheries, particularly during the early larval stages of fish and shrimp. However, intensive rotifer culture still largely depends on commercial media and inorganic fertilizers, which are relatively costly and may pose environmental risks when used excessively. This study aimed to assess the potential of liquid organic fertilizer (LOF) derived from rice washing water and coconut water as an alternative medium to enhance rotifer biomass production. The experiment was conducted using a Completely Randomized Design (CRD) consisting of four treatments with three replicates, including three LOF concentrations (5, 10, and 15 mL/L) and a control treatment using commercial fertilizer KW21 (1 mL/L). The observed parameters included rotifer population density, specific growth rate (SGR), and water quality over a 10-day culture period. The results indicated that LOF application had a significant effect on rotifer population growth (ANOVA, p < 0.05). The highest population density and SGR were obtained at the 15 mL/L treatment; however, this treatment also exhibited a more rapid population decline during the later culture phase. In contrast, the 10 mL/L treatment showed a more stable growth pattern, maintaining relatively high population density until the end of the culture period, suggesting it as the optimal concentration. Water quality parameters remained within the tolerance range for rotifers (Brachionus sp.), indicating that differences in population growth were primarily influenced by nutrient availability rather than environmental conditions.In conclusion, liquid organic fertilizer based on rice washing water and coconut water demonstrates strong potential as a cost-effective, environmentally friendly, and sustainable alternative medium for rotifer culture, while also supporting the implementation of circular economy principles in aquaculture systems.
GROWTH RESPONSE OF Caulerpa racemosa ON DIFFERENT CULTURE MEDIA (CONTAINERS VS. TARPAULINS) UNDER CONTROLLED CONDITIONS Ma&#039;rufa Nurul Latifah; Jane Lulinda Dangeubun; Irwan Ismail; Moses Tjoanda; Ongen Rumaryo Lekirupy
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 22, No 2 (2026): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.22.2.139-145

Abstract

Caulerpa racemosa is a commercially valuable macroalga, and cultivation conditions can influence its growth performance. Differences in environmental stability across cultivation media can lead to variations in stolon growth, ramification, and biomass accumulation, necessitating an evaluation of the optimal cultivation system under controlled conditions. The objective of this study was to compare the growth of primary stolons, ramules, and fresh biomass of C. racemosa cultivated in containers and tarpaulin tanks, and to determine the most effective medium for supporting vegetative growth in a controlled environment. This study employed a Completely Randomized Design (CRD) with two cultivation medium treatments (recycled water containers and tarpaulin tanks) over 30 days, with the containers maintained under similar environmental conditions, including controlled light intensity, salinity, and water circulation. Growth parameters (stolon length, ramification, and fresh biomass) were measured and compared across treatments. Stolon growth in the container medium reached an average length of 21.7–24.0 cm, whereas in the tarpaulin trough it ranged from 11.0 to 20.6 cm. Growth in the container medium was optimal due to more stable environmental conditions (smaller fluctuations in temperature and pH) and was statistically significantly higher than other treatments (p < 0.05). Containers can be recommended as an efficient cultivation medium for C. racemosa at the laboratory and pre-production scales, owing to their greater environmental stability and improved growth performance. Further research is recommended to evaluate nutrient optimization and scalability for coastal aquaculture applications.
Co-Authors Amahorseja, Anggeline Lioni Anggeline L Amahorseja Anwar, Yanto Bachmid, Salahuddin Banjar, Firman Cahya saputri Leisubun Dahlan, Rosmida R Darwin . Diana Lindasari Waroy Elen M Lutur Irsan Irsan Jane Lulinda Dangeubun Jane Lulinda Dangeubun Kabau, Widyawati Koto, Saifuddin Lutur, Elen Marta Lutur, Elen Marta Ma&#039;rufa Nurul Latifah Madubun, Usman Mangesa, Rosita Moses Tjoanda Moses Tjoanda Muhammad Askin Putra Fanela Muhammad Askin Putra Fanela Ongen R. Lekirupy Ongen R. Lekirupy Ongen Rumaryo Lekirupy Petrus Paulus Letsoin Pradina A Sukirno Pradina A Sukirno Rahayaan, Saraswati Rumakabis, Mega Utami Salahuddin Bachmid Samsia Umasugi, Samsia Siti Nuraisah, Siti Siti Tamher Tjoanda, Moses Tua Rahantoknam, Santi Penina Warayaan, Finansius Ferdi Wusuk, Rumiati Yusthinus T. Male _, Kasmawati