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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 5 Documents
 1 
Search results for , issue "Vol. 10 No. 1 (2025)" : 5 Documents clear
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.
Variabilitas Suhu di Samudera India Pada Saat Indian Ocean Dipole Positif Tahun 2006 Johan, Septi
JURNAL ENGGANO Vol. 10 No. 1 (2025)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jenggano.10.1.20-27

Abstract

The Indian Ocean Dipole (IOD) is a phenomenon of ocean and atmosphere interaction characterized by differences in sea surface temperature between the eastern (90oE-110oE and 10oS-0oN) and western (50oE-70oE and 10oS-10oN) of Indian Ocean. This study examines the variability of the temperature of the Indian Ocean during the positive evolution of the Indian Ocean Dipole (IOD) in 2006. The data used in this research are Sea Surface Temperature (SST) data, wind data, monthly Sea Surface Height (SSH) data and current velocity data. zonal. These data were then analyzed using a low-pass filter with a 13-month cut-off period to observe the IOD phenomenon. The results of this study indicate that positive IOD evolution in 2006 was identified through the IOD Index, this is also supported by the results of temperature data analysis. Based on temperature data, there is a pattern of temperature differences between the eastern and western regions of the Indian Ocean. In May, the surface temperature begins to decrease, indicating the start of the IOD evolutionary phase. IOD began to occur in May with a temperature of -0.5oC. Over time, IOD evolution reaches a peak in September-October with a temperature of -1.8oC and begins to experience evolutionary decay in November-December with a temperature of -0.2oC. IOD evolution that occurs on the surface is influenced by zone currents and surface wind movements that move to the left. The positive IOD movement to the west also affects the decrease in sea level in the west coast of Sumatra which is marked by a negative value of SSHA.   Keywords: Indian Ocean Dipole, Lowpass Filter, Temperature
Isolasi Senyawa Saponin dari Mangrove Rhizophora Mucronata dan Pemanfaatannya sebagai Pestisida Nabati Pada Larva Nyamuk Purnama, Dewi; Rizky Suryaman Simbolon; Bertoka Fajar SP Negara; Maya Anggraini Fajar Utami; Lita Astini; Firdha Iresta Wardani; Nurlaila Ervina Herliany; Anggini Fuji Astuti
JURNAL ENGGANO Vol. 10 No. 1 (2025)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jenggano.10.1.8-19

Abstract

Senyawa saponin merupakan metabolit sekunder tumbuhan yang berperan dalam mekanisme pertahanan terhadap tekanan lingkungan serta memiliki potensi aplikasi sebagai antikanker, antijamur, antibakteri, dan pestisida nabati. Salah satu jenis mangrove yang diketahui mengandung saponin adalah Rhizophora mucronata. Penelitian ini bertujuan untuk mengkaji kandungan saponin pada ekstrak daun, akar, dan kulit batang R. mucronata serta mengevaluasi potensi toksisitasnya sebagai pestisida nabati terhadap larva nyamuk. Penelitian dilakukan menggunakan Rancangan Acak Lengkap (RAL) dengan tiga perlakuan bagian tumbuhan dan tiga ulangan. Parameter yang diamati meliputi rendemen ekstrak, identifikasi saponin menggunakan uji busa, serta uji toksisitas terhadap larva nyamuk selama 24 jam pada beberapa konsentrasi ekstrak. Data uji toksisitas dianalisis menggunakan analisis ragam (ANOVA) pada tingkat kepercayaan 95%. Hasil penelitian menunjukkan bahwa saponin terdeteksi pada ekstrak daun, akar, dan kulit batang R. mucronata, namun saponin pada ekstrak daun bersifat kurang stabil. Ekstrak akar dan kulit batang menunjukkan karakteristik busa yang lebih stabil serta persentase kematian larva yang lebih tinggi dibandingkan ekstrak daun. Meskipun demikian, hasil analisis ANOVA menunjukkan bahwa pemberian berbagai ekstrak saponin dari daun, akar, dan kulit batang R. mucronata tidak memberikan pengaruh yang berbeda nyata terhadap tingkat kematian larva nyamuk. Hasil ini mengindikasikan bahwa ekstrak kulit batang dan akar R. mucronata memiliki potensi sebagai sumber saponin, namun efektivitasnya sebagai pestisida nabati masih memerlukan optimasi metode ekstraksi dan pengujian lanjutan.
Analisis Kesesuaian dan Daya Dukung Kawasan Ekowisata Pantai Kategori Rekreasi di Pantai Sekunyit Kabupaten Kaur Agustin, Nara; Johan, Yar; Dono Wilopo, Mukti
JURNAL ENGGANO Vol. 10 No. 1 (2025)
Publisher : Universitas Bengkulu

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Abstract

Beach ecotourism is an ecotourism activity conducted in coastal areas in general by utilizing coastal resources and water levels. Sekunyit Beach is one of the beaches located in South Kaur District which is directly adjacent to the Indian Ocean. South Kaur district has an area of land area reaching 92.75 km2. This study aims to analyze the carrying capacity of recreational category coastal ecotourism area in Sekunyit Beach, Kaur Regency. The method performed in this study is the survey method. The results of the research on recreational category beach ecotourism in Sekunyit Beach obtained the results of the appropriate category (S2) and very appropriate (S1) with the Ecotourism Conformity Index (IKE) of 80,86% - 85,15%. While the value of the carrying capacity of sekunyit beach area ranges from 97 - 124 (people / day). Keywords: Area support capacity, Coastal ecotourism, Regional suitability, Scenic Beauty Estimation, Sekunyit Beach
Bioekologi Ikan Sidat (Anguilla sp) dari Perairan Provinsi Bengkulu Anggraini Fajar Utami, Maya; Purnama, Dewi; JH Sinaga, Suprianty; Fachlevy, Dwanda; Gusti Sumarni , Tri; Putri Sari, Yenni
JURNAL ENGGANO Vol. 10 No. 1 (2025)
Publisher : Universitas Bengkulu

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Abstract

Eel (Anguilla spp.) is a food fish with significant economic value and is found in rivers that border the ocean. Studying the relationship between the biological and ecological factors of eel is essential to determine species diversity, fish size, and environmental aspects. This study aims to identify eel catches based on external morphological characteristics and ecological aspects found in Bengkulu Province. The method used in this research is a survey method with eel samples collected through purposive sampling and measurements of water parameters from three rivers: the Jenggalu River, Riak Siabun, and Air Manna. Based on the research results, Anguilla bicolor was found in the Jenggalu and Riak Siabun rivers. In the Manna River, two species of eel were identified: Anguilla marmorata and Anguilla bicolor. Water quality parameter measurements indicatedin the optimal condition for eel growth in all three rivers, which featured sandy mud and rocky gravel substrates Keywords: Biology, Ecology, Eel, Water Quality, River

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