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All Journal Acta Aquatica: Aquatic Sciences Journal Jurnal Biologi Tropis Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan Forest and Nature
Julian, David
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Other

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Integrated Coastal Zone Management for Sustainable Ecotourism in Kalangan Hamlet, Pulau Pahawang Village, Lampung: A Case Study Reza, Muhammad; Julian, David; Putra, Muhamad Gilang Arindra; Azkia, Lana Izzul
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i2.6703

Abstract

Kalangan Hamlet is one of the coastal communities in Pahawang Island Village, Lampung. It has abundant natural resources and offers prospects as a tourist destination. It is located away from Pahawang Island, so the area is considerably behind in terms of tourism management. The aim of the research was to develop effective strategies for managing the coastal areas of Kalangan Hamlet. The strategies had been suggested to contribute to Kalangan Hamlet's potential for coastal tourism growth. Data was collected using survey and observation methods, with respondents chosen through the snowball sampling technique. The collected data was analyzed using Strengths, Weakness, Opportunities, and Thread (SWOT) analysis and Analytic Hierarchy Process (AHP). The primary strategy for managing the coastal areas of Kalangan Hamlet involves enhancing infrastructure to support tourism, while simultaneously prioritizing the preservation of the natural ecosystem and ensuring the well-being of the local population. This approach balances economic development with environmental sustainability and social equity, thereby fostering a holistic and sustainable tourism model.
Replacement of Soybean Meal Flour with Fermented Moringa (Moringa oleifera) Leaves Flour on Catfish (Clarias sp.) Feed Yusup, Maulid Wahid; Febri Haryanti1, Indri; Santoso, Limin; Elisdiana, Yeni; Susanti, Oktora; Julian, David; Kholiqul Amiin, Muhammad
Jurnal Biologi Tropis Vol. 24 No. 1b (2024): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1b.7996

Abstract

Clarias sp. represent one of the most prominent aquaculture commodities in Indonesia, but the challenge in catfish aquaculture is the production of feed because it is highly vulnerable to imports. Therefore, Moringa (Moringa oleifera) leaves are considered as an alternative raw material for vegetable protein source-based catfish feed to reduce soybean imports. This research was conducted to examine the use of different proportions of Moringa oleifera fermented leaf meal in feed as substitute for soybean meal on the performance catfish (Clarias sp.). This study used a completely randomized design with five treatments and three repetition of feed A as a control (0% of fermented moringa leaves flour), feed B (75% of soybean meal flour + 25% of fermented moringa leaves flour), feed C (50% of soybean meal flour + 50% of fermented moringa leaves flour), feed D (25% of soybean meal flour + 75% of fermented moringa leaves flour) and feed E (100% of fermented moringa leaves flour). Based on the data, the supplementation of fermented moringa meal with E feed had a significant increase in absolute weight growth, specific growth rate, feed conversion rate, protein retention and fat retention and a decrease in protein efficiency ratio. The fermented moringa leaves flour with the composition of 100% can be used in catfish feed as a substitution for soybean meal flour with an average absolute weight growth is 13,16±2,54 – 15,76±1,03 g.
Population characteristic of torpedo scad (Megalaspis cordyla Linnaeus, 1758) in the Lampung Bay: Size structure, growth type, and condition factor Julian, David; Caesario, Rachmad; Kartini, Nidya; Yudha, Indra Gumay; Delis, Putu Cinthia; Hasani, Qadar; Yulianto, Herman
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 11: No. 2 (August, 2024)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v11i2.14735

Abstract

Megalaspis cordyla, locally known as ikan bekre, stands as a crucial economic species commonly consumed by the people of Lampung. The escalating demand for this fish has significant implications for increased fishing activities, potentially impacting its population. This research aimed to explore the biological characteristics of M. cordyla landed at the Lempasing Fishing Port, Bandar Lampung, providing fundamental insights for fisheries resource management in the waters of Lampung Bay. Using a quantitative descriptive method, the sampled fish has been analyzed to get size structure, growth type, and fish condition factors based on length and weight data collected from M. cordyla landed weekly. Between April and June 2022, a total of 300 samples were collected, with length ranging from 230 to 430 mm TL, with the largest count (77 individuals) in the 314-334 mm interval. M. cordyla has an allometric negative growth pattern in Lampung Bay, with a growth coefficient (b) value of 2.47. Fish condition factor values ranged from 0.71 to 1.33, with June having the highest average value of 1.03. This information contributes greatly to a better understanding and long-term planning for the management of this fish population.Keywords: Allometric; Condition Factor; Length-Weight Relationship; Pelagic Fish; Aquatic Resources Management
ANALYSIS OF THE SUSTAINABILITY OF THE UTILIZATION OF THREADFIN BREAM (Nemipterus sp.) LANDED AT LEMPASING FISHING PORT, BANDAR LAMPUNG Putriani, Rizha Bery; Lahay, Almira Fardani; Putri, Septi Malidda Eka; Julian, David
AQUASAINS Vol. 12 No. 2 (2024): March 2024
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v12i2.p1506-1519

Abstract

The waters of Lampung Bay have high potential resources for threadfin bream (Nemipterus sp.). This fish has significant economic value as a diverse food ingredient. However, currently, the body size of threadfin bream found tends to be uniform and even smaller due to continuous overfishing. The research was conducted to assess the status of utilization of threadfin bream resources in the waters of Lampung Bay based on five important aspects, namely ecology, economics, social, technological and institutional. The research was carried out in May 2023 at Lempasing Fishing Port, Bandar Lampung City, with data collection through observation and interviews. Data analysis used the multi-dimensional scaling (MDS) method using the Rapfish (rapid appraisal for fisheries) application to evaluate the sustainability of the use of threadfin bream. The results of the analysis show that the sustainability index value for the use of threadfin bream in the waters of Lampung Bay is as follows: ecological dimension 48.59; economic dimension 36.80; social dimension 75.00; technology dimension 49.91; and ethical dimension 61.64. Based on these results, it can be concluded that the use of threadfin bream in the waters of Lampung Bay is quite sustainable, with an average index value of 54.39.Keywords: Ecological dimension, multi-dimensional scaling, Rapfish, sustainability index.
Quantifying Marine Debris Pollution in Mangrove Ecosystems: A Study from Kalangan Hamlet, Lampung, Indonesia Putra, Muhamad Gilang Arindra; Reza, Muhammad; Diantari, Rara; Yuliana, Darma; Julian, David; Damayanti, Inggar; Afrianti, Nur Afni
Forest and Nature Vol. 1 No. 3 (2025): July
Publisher : Green Insight Solutions

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63357/fornature.v1i3.17

Abstract

Mangrove ecosystems are currently facing severe threats due to the accumulation of marine debris, particularly plastic waste. This study aims to quantify the types and weights of marine debris in the mangrove ecosystem of Kalangan Hamlet, Lampung, Indonesia, and analyze their impact on various mangrove species. Data collection was conducted in three zones with different levels of human activity: low, medium, and high. Data on the types and weight of debris were collected using the transect plot method. Correspondence analysis was used to examine the relationship between debris types and the intensity of human activity. The results showed that plastic waste was the most dominant type in terms of both quantity and weight, particularly in areas with moderate to high levels of activity. Over 90% of the waste composition consisted of plastic, weighing over 9,000 g at Stations 2 and 3. Mangrove species of the genus Rhizophora were the most affected, likely due to their complex root structure, which effectively traps waste. Other types of waste, such as fabric, rubber, and glass, were also found in significant quantities and correlated with tourism and community activities. Waste accumulation, particularly plastic, not only alters habitat structure but also hinders mangrove regeneration, which could ultimately reduce ecosystem function and biodiversity. Waste management should align with the area's activity level, with high-activity zones requiring more intensive clean-ups, proper facilities, and regulation enforcement. Community engagement and awareness are crucial in reducing the impacts of marine debris on mangroves. Its temporal scope and sampling frequency limit this study; broader and longer-term research is recommended.
Co-Authors Afrianti, Nur Afni Caesario, Rachmad Damayanti, Inggar Delis, Putu Cinthia Elisdiana, Yeni Febri Haryanti1, Indri Herman Yulianto Indra Gumay Yudha KARTINI, Nidya Kholiqul Amiin, Muhammad Lahay, Almira Fardani Lana Izzul Azkia, Lana Izzul Limin Santoso Muhammad Reza Putra, Muhamad Gilang Arindra Putri, Septi Malidda Eka Putriani, Rizha Bery Qadar Hasani Rara Diantari Susanti, Oktora Yuliana, Darma Yusup, Maulid Wahid