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Kota bengkulu,
Bengkulu
INDONESIA
JURNAL ENGGANO
Published by Universitas Bengkulu
ISSN : 26155958     EISSN : 25275186     DOI : -
Core Subject : Education,
Other
Jurnal Enggano is published twice a year, in April and September, and contains a mixture of academic articles and reviews on all aspects of marine science and fisheries.
Arjuna Subject : -
Articles 196 Documents
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Pertumbuhan Rumput Laut Kappaphycus alvarezii (Doty, 1985) dengan Metode Lepas Dasar Prayudha, Muhammad Rifky; Pramesti, Rini; Susanto, AB
JURNAL ENGGANO Vol. 9 No. 2 (2024)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jenggano.9.2.208-215

Abstract

Environmental factors have affected seaweed cultivation. Productivity can be increased by using the right method. Seaweed production is related to brightness and photosynthetic processes which are affected by planting depth. This study aims to examine the effect of differences in depth on the growth rate of K. alvarezii with the off-bottom cultivation method in the waters of Lontar Village, Serang Regency, Banten Province. Randomized Block Design was used as the experimental design in this study. Cultivation depth of 30 cm, 50 cm and 70 cm were used as different treatments, each with three groups and 5 replications. The growth of sample weight was observed every week for six weeks as the main parameter. Water quality (temperature, salinity, brightness, pH, current velocity, nitrate, phosphate and dissolved oxygen) was observed as another parameter. The results showed that weight growth is influenced by the depth of cultivation. The 30 cm depth has the highest growth rate with an absolute growth of 890 grams and a specific growth rate of 2.85% per day.   Keywords : Kappaphycus alvarezii, depth, growth rate
Variasi Musiman Sea Level Anomaly di Wilayah Perairan Indonesia Haryo, Julis Dani; Lizalidiawati, Lizalidiawati; Irkhos, Irkhos; Suhendra, Suhendra
JURNAL ENGGANO Vol. 9 No. 2 (2024)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jenggano.9.2.200-207

Abstract

Indonesia's territory is located between two vast oceans, namely the Pacific and Indian Oceans as well as the two continents of Australia and the continent of Asia. As a result, Indonesia's regional climate is directly influenced by these geographical conditions. As is known, Indonesia experiences the Northwest Monsoon and Southeast Monsoon. The seasonal variations that occur include part of the aim of this research, namely to identify seasonal variations in sea surface anomalies (SLA) in three regions of Indonesia representing western, central and eastern waters using altimetry satellite image data. The coordinates of these three areas, namely, represent parts of the West Sumatra Sea (1°S – 3°S, 95°E – 100°E), Makassar Strait (5°S- 8°S, 119°E- 25°E), and the Banda Sea (5°S – 8°S, 125°E – 109°E). The data used for 30 years (1993-2022) is in the form of monthly average SLA data and processed using Panoply software to display the SLA distribution in each area as well as the SLA Time Series in the three regions. The research results show that the highest sea level rise occurred in area A (Western waters of Sumatra) with an SLA of 1.4 m with a rate of increase ranging from 0.5-1.4 m/year. In area B (Banda Sea), the SLA obtained is 1.2 m with an increase rate ranging from 0.7-1.2 m/year. Meanwhile in Area C (Makassar Strait) it is 1.3 m with an increase rate ranging from 0.7-1.3 m/year. Keywords: Sea Surfalce Height, Season variation, west, east, and middle region.
Desain Hydrolic System With Twin Brush Kart Sebagai Sarana Penunjang Percepatan Project Ship Maintenence Angga, Anauta Lungiding A.R.; Retno, Retno Syahriawati Dewi; Sessy, Arisessy Maharani Mulananda
JURNAL ENGGANO Vol. 9 No. 2 (2024)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jenggano.9.2.216-225

Abstract

  ABSTRACT One of the tools that can assist in the maintenance process of a ship before it enters a dry dock is an underwater ship hull cleaner. The existing tools currently used are not yet widely available across Indonesia. Therefore, this research aims to plan the development of an underwater ship hull cleaner named the Twin Brush Kart. The objective is to determine an efficient system and design. The methodology involves collecting data on the number of shipyards and ships in Indonesia, as well as existing underwater ship hull cleaners. From the available hull cleaner data, this research adopts a hydraulic system. The hydraulic system offers advantages such as flexibility, versatility, and efficiency. The resulting design is user-friendly, with dimensions of 70 cm length, 55 cm width, and 16.7 cm height, and includes a control interface for the user. Additionally, the planned system is straightforward for users to understand, allowing for quick learning of the Twin Brush Kart. Based on the planning results, the specifications include a diesel engine with 14.55 kW of power, a hydraulic pump with a flow rate of 40.1 lpm and a working pressure of 185 bar, and a rotary actuator with a displacement of 19.9 cc and a rotational speed of 1000 RPM. Keywords: Hull, underwater cleaner, hydraulic system
Pola Pertumbuhan Kerang Lokan Geloina erosa, Solander 1786 di Muara Jenggalu Kota Bengkulu Nella Tri Agustini; Nisa Nurul Suci, An; Iresta Wardani, Firdha; Dono Wilopo, Mukti; Putri Sari , Yenni; Abdurrahman Mahfudz, Akbar
JURNAL ENGGANO Vol. 9 No. 2 (2024)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jenggano.9.2.226-233

Abstract

Kerang lokan Geloina erosa merupakan salah satu kelompok Bivalvia yang hidup dan berkembang di Ekosistem Mangrove. Kerang ini telah dimanfaatkan oleh penduduk sekitar sebagai biota konsumsi dan memiliki kandungan gizi yang tinggi. Salah satu daerah penghasil kerang lokan di Kota Bengkulu adalah Muara Jenggalu, terletak di Jalan Jenggalu Kelurahan Lingkar Barat Kota Bengkulu. Permintaan masyarakat yang cenderung meningkat setiap tahun menyebabkan meningkatnya eksploitasi terhadap kerang lokan. Pemanfaatan kerang lokan dieksploitasi secara langsung di ekosistemnya yaitu ekosistem mangrove. Pengambilan kerang lokan secara terus menerus dan banyaknya aktivitas manusia di sekitar kawasan Muara Jenggalu dikhawatirkan dapat mengakibatkan terjadinya penurunan ketersediaan stok kerang lokan di ekosistem mangrove Muara Jenggalu. Penelitian ini bertujuan untuk menganalisis hubungan panjang berat dan nisbah kelamin kerang lokan di Muara Jenggalu Kota Bengkulu. Pertumbuhan kerang lokan di Muara Jenggalu bersifat allometric negative (<3) dimana pertumbuhan panjang cangkang lebih dominan daripada pertumbuhan berat. Persentase jumlah kerang lokan berjenis kelamin jantan yaitu 61,96% dan berjenis kelamin betina 38,04%.
Variasi Musiman Tinggi Gelombang Laut di Perairan Pulau Enggano Provinsi Bengkulu Chinci, Jeniu; Lizalidiawati, Lizalidiawati; Suhendra, Suhendra; Anjasman, Anjasman
JURNAL ENGGANO Vol. 9 No. 2 (2024)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jenggano.9.2.233-246

Abstract

Enggano Island is one of Indonesia's outermost islands located in the waters west of Sumatra. Enggano Island is directly adjacent to the vast and deep Indian Ocean so that the waters are very dynamic. One of them is known that the sea waves in these waters are very volatile. This study aims to find out the seasonal variation of sea wave height in the waters of Enggano Island, Bengkulu Province. This study uses primary data in the form of sea wave height measured at Kaana Beach and secondary data for 3 years (2021-2023) in the form of monthly average wind direction and speed, temperature and density data obtained from https://data.marine. copernicus.eu/viewer/expert?view=layers&dataset=GLOBAL_ANALYSISFORECAST_PHY_001_024, sea wave height data obtained from https://data.marine.copernicus. eu/viewer/expert?view=layers&dataset=GLOBAL_ANALYSISFORECAST_WAV_001_027. Data processing uses Python Anaconda 3 software for 2D display and Microsoft Excel for time series display. The methods used in this study are descriptive and quantitative methods. The results of the study show that the sea wave height in the waters of Enggano Island varies seasonally, it can be seen that the maximum sea wave height occurs in the eastern season in August with a value of 1.5-3 m with a wind direction and speed of 5-6 m/s and 7 m/s in the southern area of the island, while the minimum wave height occurs in the western season in December with a value of 1-2 m with a wind direction and speed of 1-2 m/s blowing towards the North and West of the island. Keywords : Enggano Island, seasonal variation, high sea waves, wind speed
Pupulation Density Of (Tenualosa ilisha) During The Peak Spawning Season In The Down Stream Barumun River
JURNAL ENGGANO Vol. 10 No. 1 (2025)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jenggano.10.1.1-7

Abstract

The aim of this study was to explore the population density of (Tenualosa. Ilisha) during its peak spawning season. This understanding is crucial for effective management and conservation of the species, which is critical to fisheries and local ecosystems. The study was conducted from January to April 2023. This period was chosen to capture data during the peak spawning season of Hilsa fish, which is critical for understanding its population dynamics. The study was conducted in the lower reaches of the Barumun River. The study site was divided into three sampling points, which were determined based on information provided by local fishermen. This strategic selection of sampling points was critical to accurately assess the population density of (T. Ilisha) in the river environment. Data analysis in this study utilised SPSS software, Pearson correlation analysis, and focused on key water quality parameters to assess their impact on (T. Ilisha) population density. The population density of (T. Ilisha) was observed to range from 0.11 to 0.14 fish per 100 m² at the station. Correlation analysis showed a strong correlation between salinity and population (0.723). This shows that salinity has the most influence on population density. Based on this it can be concluded that the density of (T.ilisha) fish populations in the lower reaches of the Barumun River is influenced by salinity.

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