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David Julian
Fisheries And Marine Department, Faculty Of Agriculture, University Of Lampung
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Physics Social Sciences Other

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Studi Kesesuaian dan Arah Strategis Pengelolaan Pengembangan Wisata Pantai di Pulau Sebesi Yuliana, Darma; Damai, Abdullah Aman; Hasani, Qadar; Yulianto, Herman; Caesario, Rachmad; Diantari, Rara; Reza, Muhammad; Julian, David; Delis, Putu Chintia; Putriani, Rizha Bery
Jurnal Laut Khatulistiwa Vol 8, No 2 (2025): July
Publisher : Dept. Marine Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/lkuntan.v8i2.94856

Abstract

Pulau Sebesi di Kabupaten Lampung Selatan memiliki potensi besar untuk pengembangan wisata bahari berkelanjutan karena kekayaan ekosistem laut, topografi unik, serta letaknya yang strategis dekat Gunung Anak Krakatau. Meski demikian, pengelolaan wisata di pulau ini masih menghadapi berbagai hambatan, seperti kurangnya infrastruktur, rendahnya promosi, dan belum adanya perencanaan berbasis data. Penelitian ini bertujuan mengevaluasi atau menilai tingkat kesesuaian lahan untuk kebutuhan wisata pantai sekaligus merancang strategi pengembangan yang sesuai. Metode penelitian yang diterapkan adalah deskriptif dengan menggabungkan pendekatan kuantitatif dan kualitatif. Pengumpulan data melalui observasi langsung serta wawancara kuesioner. Analisis data dengan pengukuran Indeks Kesesuaian Wisata (IKW) dan analisis SWOT dengan matriks IFAS dan EFAS. Nilai IKW pada Stasiun 1 tercatat 2,245, Stasiun 3 sebesar 2,415, dan Stasiun 4 sebesar 2,32, ketiganya termasuk kategori sesuai. Sementara Stasiun 2 sebesar 2,9 termasuk kategori sangat sesuai. Berdasarkan SWOT, Pulau Sebesi berada pada kuadran III. Hal ini berarti strategi yang direkomendasikan adalah WO (memanfaatkan peluang dengan mengurangi kelemahan). Strategi pengembangan yang diusulkan meliputi peningkatan promosi digital, pelatihan sumber daya manusia lokal, dan kolaborasi multipihak untuk perencanaan pengelolaan terpadu. Hasil kajian menunjukan bahwa Pulau Sebesi berpeluang besar menjadi destinasi ekowisata unggulan jika pengelolaannya diarahkan secara tepat dan partisipatif.
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.
Edukasi Mitigasi Bencana Banjir Rob di Pesisir Kota Bandar Lampung Muhammad Reza; Suparmono Suparmono; David Julian; Rizha Bery Putriani
JURNAL PENGABDIAN MASYARAKAT INDONESIA Vol. 3 No. 1 (2024): Februari : Jurnal Pengabdian Masyarakat Indonesia (JPMI)
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jpmi.v3i1.3467

Abstract

Wilayah pesisir merupakan wilayah yang memiliki kekayaan alam yang berlimpah baik dari sumberdaya alam maupun dari jasa-jasa lingkungan. Sumberdaya alam yang ada di wilayah pesisir yaitu perikanan, pertambangan, jasa ekowisata dan lain-lain. Selain memiliki kekayaan alam yang berlimpah wilayah pesisir ini merupakan wilayah yang rawan bencana alam dibandingkan dengan sungai atau daratan. Mitigasi bencana dibutuhkan pemahaman masyarakat terhadap langkah-langkah apa saja yang perlu dilakukan dalam melaksanakan mitigasi, agar tujuan mitigasi sebagai upaya mengurangi resiko bencana dapat berjalan dengan baik dengan semestinya. Penyampaian materi dilakukan dengan ceramah dan diskusi antara pemateri dan masyarakat yang berlangsung di kantor kelurahan Bumi Waras. Hasil yang diperoleh sebelum dilakukan mitigasi yaitu sekitar 21 responden belum mengetahui dan sekitar 14 sudah mengetahui tentang mitigasi bencana alam di wilayah pesisir. Setelah dilakukan sosialisasi mtiigasi bencana berdasarkan hasil post test diperoleh sekitar 34 responden sudah mengerti mengenai mitigasi bencana alam di wilayah pesisir.
Quantifying Marine Debris Pollution in Mangrove Ecosystems: A Study from Kalangan Hamlet, Lampung, Indonesia Muhamad Gilang Arindra Putra; Muhammad Reza; Rara Diantari; Darma Yuliana; David Julian; Inggar Damayanti; Nur Afni Afrianti
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.
Composition and Diversity of Macrozoobenthos in Seagrass Areas in Pulau Pahawang Village Darma Yuliana; Abdullah Aman Damai; Muhamad Gilang Arindra Putra; Rara Diantari; Nur Afni Afrianti; Inggar Damayanti; Yuliana Saleh; David Julian; Muhammad Reza; Berta Putri
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 4 (2025): August 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i4.1140-1147

Abstract

Seagrass beds, particularly those found in Pulau Pahawang Village, serve as vital marine ecosystems that support diverse marine life. This study aims to investigate the composition and diversity of macrozoobenthos within these seagrass ecosystems. Seagrass and macrozoobenthic data were gathered through a 30 m line transect and 1m×1m. The samples were identified to the species or genus level, and the data were analyzed for composition and diversity using the Shannon-Wiener (H’), Dominance (C), and Evenness (E) indices. To assess the relationship between seagrass cover and macrozoobenthic density, a Pearson correlation test was performed. The seagrass species found is Enhalus acoroides. The macrozoobenthic community found in the seagrass ecosystem consists of 2 classes: 22 Gastropoda and 16 Bivalvia. The diversity index of macrozoobenthos (1.47-2.81) show moderate diversity, with high similarity (0.638–0.917), amd low dominance (0.059–0.265) indicates a balance community. The environmental conditions, including water temperature (30.8°C–31.8°C), salinity (30–31), and dissolved oxygen (5.8–6.8 mg/L), strongly support the growth of seagrasses and macrozoobenthos. This study emphasizes the importance of monitoring water quality and species diversity to ensure the sustainability of the seagrass ecosystem and other in Pulau Pahawang Village.   Keywords: Biodiversity, Enhalus acoroides,  Macrozoobenthos, Seagrass beds, Water quality.
Life History and Exploitation Status of Savalai Hairtail (Lepturacanthus savala) from Lampung Bay Waters David Julian; Muhammad Reza; Muhamad Gilang Arindra Putra
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): 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.v26i2.11924

Abstract

The savalai hairtail (Lepturacanthus savala) is a commercially valuable demersal species in the coastal ecosystems of Teluk Lampung, where increasing fishing pressure has raised concerns regarding stock sustainability. This study assessed the life history characteristics and exploitation level of the species to support sustainable fisheries management. An overall number of 347 individuals were obtained from fishing port between May and August 2023. Length-frequency data were analyzed utilizing the TropFishR package with the electronic length frequency analysis (ELEFAN) approach. The results showed that the population exhibits relative growth, consistent with tropical fish characteristics. However, fishing mortality significantly exceeded natural mortality, signifying intense fishing efforts on the stock. The utilization rate has exceeded the optimum level, indicating overexploitation, while biological indicators revealed that many individuals were captured prior to attaining adequate reproductive size, posing a threat of recruitment overfishing. These findings demonstrate that the savalai hairtail stock in Teluk Lampung is not sustainable under current exploitation levels. Immediate management actions, including controlling fishing effort, improving gear selectivity, and protecting immature fish, are urgently required to guarantee the long-term viability and stop additional stock depletion of fisheries resources in Teluk Lampung.
RELATIONSHIP BETWEEN COMMUNITY KNOWLEDGE AND PARTICIPATION IN CORAL REEF CONSERVATION ON SEBESI ISLAND, INDONESIA Khadijah; Meisy Legiawati; Amara Choirunisa; Apria Pamilda; Rezhati Rahmalia; Ni Wayan Rintan Malika Putri; Ridwan Ali Sahroni; Reza Raihandi Akbar; M. Rizko Fajrin; David Julian; Muhammad Reza
Aquasains: Jurnal Ilmu Perikanan dan Sumberdaya Perairan Vol. 14 No. 2 (2026): March 2026
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v14i2.13170

Abstract

Community participa-tion is a key factor in supporting the sustainability of coral reef ecosystems, particularly in small island communities that rely heavily on marine resources. Community knowledge is considered one of the factors that may influence participation in conservation efforts. This study aimed to analyze the relationship between community knowledge and participation in coral reef ecosystem conservation on Sebesi Island, Lampung Province, Indonesia. A quantitative survey approach was employed using structured questionnaires administered to 30 respondents selected from the local community. The research instrument was tested for validity and reliability prior to data collection. Data were analyzed using descriptive statistics and Pearson correlation analysis at a significance level of 5%. The results indicated that community knowledge regarding coral reef conservation was generally in the good category, as was the level of community participation in conservation activities. Pearson correlation analysis revealed a strong positive relationship between community knowledge and participation (r = 0.690; p < 0.05), indicating that higher levels of knowledge were associated with greater community involvement in coral reef conservation. These findings suggest that improving environmental knowledge through education, outreach, and community empowerment programs may enhance public participation in coral reef ecosystem conservation. The study provides empirical evidence to support community-based conservation strategies for the sustainable management of coral reef ecosystems on small islands.
Co-Authors Abdullah Aman Damai Abdullah Aman Damai Abdullah Aman Damai Afrianti, Nur Afni Amara Choirunisa Apria Pamilda Berta Putri Berta Putri Caesario, Rachmad Damayanti, Inggar Darma Yuliana Darma Yuliana Delis, Putu Chintia Delis, Putu Cinthia Dian Lestari Eka Putri, Septi Malidda Elisdiana, Yeni Fadhli Fajri Febri Haryanti1, Indri Haikal, Muhammad Faaris Herman Yulianto Indra Gumay Yudha Inggar Damayanti Inggar Damayanti Irvan Hambali Jonathan Anugrah Lase KARTINI, Nidya Khadijah Kholiqul Amiin, Muhammad Lahay, Almira Fardani Lana Izzul Azkia, Lana Izzul Limin Santoso Luluk Irawati M. Rizko Fajrin Mayaguezz, Henky Meisy Legiawati Muhamad Gilang Arindra Putra Muhamad Gilang Arindra Putra Muhamad Gilang Arindra Putra Muhamad Gilang Arindra Putra Muhammad Kholiqul Amiin Muhammad Kholiqul Amiin, Muhammad Kholiqul Muhammad Reza Muhammad Reza Muhammad Reza Muhammad Reza Muhammad Reza Muhammad Reza Ni Komang Suryati, Ni Komang Ni Wayan Rintan Malika Putri Nur Afni Afrianti Nur Afni Afrianti Putra, Muhamad Gilang Arindra Putri, Septi Malidda Eka Putriani, Rizha Bery Putu Chintia Delis Qadar Hasani Rachmad Caesario Rara Diantari Rara Diantari Rara Diantari Reza Raihandi Akbar Rezhati Rahmalia Ridwan Ali Sahroni Riki Hiskia Candra Rizha Bery Putriani Rizha Bery Putriani Rizha Bery Putriani Saleh, Yuliana Suparmono Suparmono Suparmono Suparmono Suparmono Suparmono Susanti, Oktora Teguh Rafian Woki Bilyaro Yuliana Saleh Yuliana, Darma Yusup, Maulid Wahid