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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Tunas Geografi BIOTROPIA - The Southeast Asian Journal of Tropical Biology Syntax Literate: Jurnal Ilmiah Indonesia Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Jurnal Medik Veteriner JURNAL PENDIDIKAN TAMBUSAI Journal of Sylva Indonesiana Jurnal Aplikasi dan Inovasi Iptek (JASINTEK) Community Development Journal: Jurnal Pengabdian Masyarakat JURNAL ILMIAH GLOBAL EDUCATION Global Forest Journal Journal of Community Services: Sustainability and Empowerment Journal of Environmental and Development Studies
Bejo Slamet
Balai Besar Riset Perikanan Budidaya Laut
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Analysis Of Mangrove Land Cover In The Sawo Marine Conservation Area, North Nias District Ifanda, Dayun; Slamet, Bejo; Yunasfi, Yunasfi; Sri Hastuti, Liana Dwi
Tunas Geografi Vol 13, No 1 (2024): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v13i1.52747

Abstract

Sawo sub-district of North Nias Regency has a mangrove ecosystem that has been designated as a Regional Marine Conservation Area (KKLD) with an area of 29,230.85 ha. The 2005 earthquake and tsunami are reported to have caused damage to mangrove ecosystems due to rising land levels. The increase in land surface has resulted in the destruction of mangroves in this area. This impacts the sustainability of the mangrove ecosystem in this region and is important to study. This study aims to analyze changes in mangrove land cover after the tsunami in 2006 to 2022 and to analyze the impact of changes in mangrove land cover. The results found that mangrove land cover continues to experience a reduction in area; in 2006, an area of 139.78 ha continued to decline until the remaining 70.87 ha in 2022. This is due to the increasing population growth that causes mangrove forest degradation and land conversion into agricultural land, plantations, and infrastructure. The increase in population is a driving force, land clearing for settlements and plantations is a pressure factor (Pressures), land use change is a factor of existing conditions (State), and reduced mangrove land area is part of the impact (Impact). Coastal spatial planning and counseling to reforestation is a response (Response). Land conversion to other uses contributes to this area's continued loss of mangrove land.Keywords: Mangrove; Land Cover; GIS; DPSIR
Editorial of the First Edition Journal of Sylva Indonesiana Slamet, Bejo; Nuryawan, Arif
Journal of Sylva Indonesiana Vol. 1 No. 01 (2018): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1390.201 KB) | DOI: 10.32734/jsi.v1i01.421

Abstract

This editorial is an opening remark of the first edition Journal of Sylva Indonesiana (JSI) containing the growth and development of the journal managed by Faculty of Forestry Universitas Sumatera Utara (“Fahutan USU”). In the first stage, “Jurnal Ilmiah Pertanian Kultura” published by Faculty of Agriculture USU has been targeted by faculty member of “Fahutan USU” for dissemination of their research results. This journal has been accredited by Directorate General of Higher Education in 2003 consequently its scope become specific, forestry science did not include therein. Hence, at that time, Program Study of Forestry Science under management of Faculty of Agriculture USU initiated the issuing of Peronema Forestry Science Journal in 2005 in order to accommodate scope of forestry science. Unfortunately the service and production of this journal become stagnant because most of the editorial staff pursued higher education in outside Medan city and the funding for publishing and printing vanished. In 2012, with the new spirit, Program of Forestry Science re-issued the new journal called “Foresta” Indonesian Journal of Forestry. It was a pity, the production process of this journal discontinued regarding to no submission of the manuscripts. All of the research results of undergraduate students of Program Study of Forestry Science have been uploaded into Peronema Forestry Science Journal in online version since 2014. In connection with establishment of organization structure of Faculty of Forestry completely, the publishing of JSI has been started in 2018 even though the editorial works of this journal has been begin since 2017, comprise call of paper, blind-review process, correspondence with the authors, layout and editing, including upload in the journal website. Supply of the manuscripts is provided not only from undergraduate research results of Faculty of Forestry’s students but also from the outside. With the commitment of the funding from the Faculty of Forestry USU, hopefully JSI can reach the target as the national accredited journal and it can achieve the status to be a reputation journal in the field of forestry in the future.
GROWTH AND SURVIVAL OF SPINY LOBSTER, Panulirus homarus JUVENILES FED WITH DIFFERENT FORMULATED FEEDS Sudewi, Sudewi; Slamet, Bejo; Adiasmara Giri, Nyoman; Haryanti, Haryanti; Rusdi, Ibnu; Jones, Clive; Irvin, Simon
BIOTROPIA Vol. 31 No. 3 (2024): BIOTROPIA Vol. 31 No. 3 December 2024
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2024.31.3.2206

Abstract

Article Highlights- Indonesia has remarkable natural resources of spiny lobster Panulirus homarus and an exceptional opportunity to establish the largest lobster aquaculture industry in the world.- However, culturing lobsters still relies on natural feeds (trash fish of fresh fishery by-catch) which are inefficient and environmentally unsustainable.- Developing formulated feed based on locally available ingredients is invaluable for replacing natural feeds to support sustainable lobster culture.- Formulated feed made of local fish meal provided the best growth of juvenile spiny lobster Panulirus homarus compared to imported fish meal. AbstractSeveral studies suggested that good growth performance and survival of lobster juveniles can be achieved by feeding the lobsters with formulated feeds. This study aimed to (1) evaluate the growth and survival of spiny lobster Panulirus homarus juveniles fed with different diets having profiles based on a basal diet formulation and (2) to compare the growth of lobsters fed with an identical formulated feed with variations only in sources of fish meal and dry matter content. The feeding experiment was designed following a completely randomized design (CRD) with five diet treatments and five replicates for each treatment. Five experimental diets were prepared in this experiment, i.e., Diet A (basal diet prepared as moist pellets); Diet B (moist pellets with the same formulation as Diet A, using local fish meal); Diet C (moist pellets with the same formulation as Diet A, using imported fish meal); Diet D (dry pellets with the same formulation as Diet A, using imported fish meal); and Diet E (fresh fish). Juveniles of spiny lobster with an average weight of 3.00±0.07 g were allocated in 25 net cages (60 x 60 x 60 cm) placed in a circular HDPE canvas tank (7.5 m in diameter) at a density of 15 lobsters/cage in a flow-through seawater system. The juveniles were fed with the experimental diets twice/day for 12 weeks. The experiment showed that the best growth was observed in juveniles fed with moist feed containing local fish meal (Diet B) with the final weight reaching 18.74±2.30 g. Moist feed containing imported fish meal (Diet C) resulted in a higher survival rate (46.66%), and the lowest survival rate (13.33%) was obtained from juveniles fed with fresh fish (Diet E).
Kelulut (Trigona spp) Cultivation to Increase Production and Additional Income of Mangrove Ecotourism Peduli Pesisir Farmer Groups, Beras Basah Village, Pangkalan Susu Sub-District, North Sumatra, Indonesia Basyuni, Mohammad; Mubaraq, Alfian; Aznawi, Andi Aznan; Sivaipram, Itchika; Amir, Ahmad Aldrie; Jumilawaty, Erni; Leopardas, Venus; Slamet, Bejo; Nuryawan, Arif; Siregar, Etti Sartina; Sulistyono, Nurdin
Journal of Community Services: Sustainability and Empowerment Vol. 4 No. 02 (2024): September 2024
Publisher : Center for Research and Community Service of Sampoerna University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35806/jcsse.v4i2.483

Abstract

The cultivation of Kelulut (Trigona) honey bees has been initiated by the Peduli Pesisir Farmers Group (Mitra) in a mangrove-based agro-tourism area in Beras Basah Village, Pangkalan Susu District, North Sumatra. However, due to limitations in mastering the science and technology (IPTEKS) of kelulut cultivation and the number of stock owned by partners as well as several other aspects, partners have not been able to meet consumer demand, based on Focus Group Discussions (FGD) and community service team discussions with several group members. from informal farming and document searches, it can be seen that the partner has the right to manage an area of 4 hectares and it has great potential to increase the honey production of kelulut bees, because in this area there are various plants that produce flowers as a source of nectar/main food for kelulut bees. Based on some of the information above, a problem analysis was carried out by the community service team involving partners, so that an agreement was born to carry out several activities that could support the smooth transfer of science and technology, such as; counseling, discussions, training and the addition of a number of stup (kelulut bees + media).
Workshop Ecoprint Dan Pengolahan Tanaman Mangrove Sebagai Pewarna Alami: Dukungan Untuk Ekowisata Risnasari, Iwan; Slamet, Bejo; Jumilawaty, Erni; Rangkuti, Ahmad Baiquni; Siregar, Etti Sartina; Elfiati, Deni; Yunasfi; Basyuni, Mohammad; Nauly, Meutia
Jurnal Aplikasi dan Inovasi Iptek Vol 6 No Risdamas (2024): Jurnal Aplikasi dan Inovasi Iptek No. 6 Vol. Risdamas Desember, 2024
Publisher : Denpasar Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52232/jasintek.v6iRisdamas.202

Abstract

Desa Bagan Kuala di Serdang Bedagai memiliki banyak potensi ekowisata salah satunya adalah ekosistem mangrove. Namun pemanfaatan sumber daya alam secara berkelanjutan belum diterapkan dengan baik. Tujuan dari kegiatan ini adalah untuk meningkatkan kapasitas peserta dalam pemanfaatan tanaman mangrove sebagai pewarna alami dan praktik ecoprint. Dalam upaya untuk meningkatkan kapasitas dan memperkuat ekonomi lokal, workshop ini melibatkan pelatihan teknik ecoprint menggunakan pewarna yang berasal dari ekstrak mangrove, yang tidak hanya ramah lingkungan tetapi juga memiliki nilai jual yang cukup tinggi. Hasil pewarnaan kain memiliki variasi warna dan motif. Keterlibatan masyarakat dalam workshop ini juga dapat meningkatkan kesadaran akan pentingnya menjaga ekosistem mangrove dan membuka peluang bisnis baru untuk mendukung ekowisata di daerah tersebut. Pengetahuan peserta terkait zat warna alam (ZWA) mengalami peningkatan dari 20% menjadi 100% peserta yang tahu tentang ZWA. Pengetahun peserta terhadap manfaat mangrove untuk batik yang awalnya hanya 6% meningkat menjadi 80%. Pengetahuan bahwa mangrove dapat dibuat untuk pewarnaan kain yang bukan batik juga mengalami peningkatan dari yang awalnya hanya 6% meningkat menjadi 87%. Pengetahun tentang ecoprint juga mengalami peningkatan pesat yang awalnya hanya 6% menjadi 100%. Diharapkan bahwa program ini akan menjadi langkah awal dalam menggabungkan pengembangan ekonomi berbasis masyarakat dengan pengelolaan lingkungan
The Drought disaster mitigation efforts based on water catchment potential in Samosir Island Rumahorbo, Novita Sari; Slamet, Bejo; Anggraini, Novita
Global Forest Journal Vol. 3 No. 01 (2025): Global Forest Journal
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/gfj.v3i01.15593

Abstract

Samosir Island is part of the upstream area of the Asahan Toba watershed. Samosir Island is often hit by drought, making getting water from rainwater and groundwater difficult. One critical information needed for drought mitigation is the spatial distribution of the potential of water catchment areas. This study analyses the spatial distribution of the potential of water catchment areas and mitigation efforts. The parameters are soil type, rainfall, land use, and slope. Spatial analysis was conducted using a Geographic Information System (GIS) with scoring and overlay techniques. The results showed that the potential of water catchment areas in Samosir Island was categorized into four classes: natural normal covering of 2.77 hectares (0.004%), starting to be critical of 8,808.001 hectares (13.647%), somewhat critical of 48,000.327 hectares (74.369%), and critical of 7,732.647 hectares (11.980%). Drought mitigation in Samosir Island related to the distribution of the potential of water catchment areas is by maintaining vegetation, planting trees and understoreys, repairing terrace boundaries, building Rainwater Harvesting Installations, and creating biopores.
Spatial Analysis of the Distribution of Heavy Metals Pb and Cb in Well Water Around Terjun Landfill in Medan City Uliya, Raihan; Aththorick, T. Alief; Slamet, Bejo; Sabrina, T; Rahmawaty
Journal of Environmental and Development Studies Vol. 6 No. 01 (2025): Journal of Environmental and Development Studies
Publisher : TALENTA Publisher, Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jeds.v6i01.16828

Abstract

The study analyzed the spatial distribution of lead (Pb) and cadmium (Cd) in well water around the Terjun Landfill in Medan City. The research aimed to determine Pb and Cd concentrations in dug and drilled wells, compare their levels, and assess the impact of proximity to the landfill's active zone. A total of 22 wells located 50–500 meters from the landfill were sampled using purposive sampling. Spatial analysis was conducted using GPS, while differences in Pb and Cd levels between well types were analyzed using a t-test (α = 0.05, CI 95%). Results showed that Pb concentrations in dug wells ranged from 0.0039 to 0.0379 mg/L, with the highest levels found near SG1 and SG4, indicating landfill influence. In contrast, Pb levels in drilled wells were lower (<0.0001 to 0.0158 mg/L) and primarily influenced by external sources. Cd concentrations ranged from 0.0008 to 0.0032 mg/L in dug wells and 0.0005 to 0.0102 mg/L in drilled wells, with contamination in drilled wells linked to external activities. Proximity to the landfill significantly affected Pb levels in dug wells but had no impact on drilled wells, while Cd levels were unaffected by distance in both well types. The findings suggest that transitioning from dug wells to drilled wells is essential to reduce heavy metal exposure and ensure safer water quality for residents.
Dietary Honeysuckle (Lonicera japonica) Extract Enhances Resistance to Infectious Myonecrosis Virus in Whiteleg Shrimp (Litopenaeus vannamei) Subaidah, Siti; Sumarwan, Joko; Marzuqi, Muhammad; Tridjoko, Tridjoko; Slamet, Bejo; Budi, Darmawan Setia; Pardede, Maria Agustina; Ulkhaq, Mohammad Faizal; Imlani, Ainulyakin; Loh, Jiun-Yan
Jurnal Medik Veteriner Vol. 8 No. 2 (2025): October
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmv.vol8.iss2.2025.286-296

Abstract

This study aimed to investigate the immune response of whiteleg shrimp (Litopenaeus vannamei) to prevent infectious myonecrosis virus (IMNV) infection by incorporating Lonicera japonica water extract into artificial feed. A total of 180 whiteleg shrimp were used in four treatment groups (triplicate) receiving different doses of L. japonica extract in their feed, including treatment A (1% w/w), B (2% w/w), C (3% w/w), and D (without supplementation/control). The dietary treatments were applied twice daily for two weeks. On the 15th day, the shrimp were injected intramuscularly at the fifth abdominal segment with IMNV isolates (100 µL/shrimp) and observed for seven days post-infection (dpi). The parameters observed included hemolymph profile, survival rate, gross clinical signs, and water quality. IMNV infection was confirmed through both external clinical signs and PCR tests. The results showed that the addition of L. japonica water extract to the feed improved the survival rate and immune responses of whiteleg shrimp following the IMNV challenge test. In conclusion, dietary supplementation of L. japonica water extract at a concentration of 2% w/w in artificial feed could serve as a preventive agent against IMNV infection in whiteleg shrimp.
Spatial Information Technology Adoption for Developing Data Base of Village Resources Samsuri; Slamet, Bejo; Zaitunah, Anita; Ahmad, Alfan Gunawan; Razali; Arisandi, Dedi
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 6 No. 2 (2021): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1799.472 KB) | DOI: 10.32734/abdimastalenta.v6i2.6266

Abstract

The village has an important role and position in national development because the concentration and other natural resources are in the village. Planning for village development activities must be harmonious and sustainable, so the need for data and information is very important. Lubuk Kertang Village, Pangkalan Brandan District, Langkat Regency is one of the villages with a lot of potentials that can be used as capital in village development. However, the potential data has not been compiled in a database that can be accessed, manipulated, and updated systematically. Therefore, it is necessary to compile a database of village potential to support significant development planning to be directed and achieve goals. The application of spatial technology to build a database on village potential is currently integrated with the internet network. It can be accessed from anywhere and anytime. Exploration of potential data shows that Lubuk Kertang village has the potential for agriculture, fisheries, forestry, small industry, and ecotourism spread across five hamlets. To manage this village potential database, training data administrators in exploring data, inputting data, and updating data is an important factor in managing the village potential database. Village government officials are very interested and can manage their village potential database
Analisis Peruntukan Lahan Daerah Aliran Sungai (DAS) Belawan Bagian Hulu dan Kaitannya dengan Perencanaan Tata Ruang Hany, Rizky; Rauf, Abdul; Slamet, Bejo
Jurnal Pendidikan Tambusai Vol. 8 No. 2 (2024)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Dalam rangka percepatan pelaksanaan pembangunan dapat diwujudkan melalui penataan wilayah pengembangan daerah, salah satunya melalui pendekatan Daerah Aliran Sungai (DAS). Salah satu DAS yang masuk dalam kategori dipulihkan karena tergolong kritis adalah DAS Belawan. Dalam hubungannya dengan perencanaan pembangunan wilayah, penelitian ini berkaitan erat dimana pola peruntukan lahan akan mempengaruhi kelangsungan dan kelestarian DAS Belawan bagian hulu yakni Sibolangit, Tuntungan, dan Kutalimbaru. Penelitian ini menggunakan metode yang berbasis Sistem Informasi Geografis. Data dikumpulkan melalui observasi, wawancara, dan studi dokumentasi. Data dianalisis melalui tahapan digitasi, overlay, dan merger, dan kemudian dilayout agar mudah dipahami. Hasil penelitian menunjukkan Perencanaan Tata Ruang Wilayah Sub DAS Belawan Bagian Hulu Kondisi Sekarang menunjukkan kawasan perkebunan merupakan kawasan yang paling luas yaitu sebesar 11999,12 Ha (52,1%). Permasalahan utama terdapat pada pemanfaatan lahan di daerah Sub DAS Belawan Bagian Hulu menunjukkan perubahan yang paling dominan terjadi di kawasan hutan produksi tetap berubah menjadi perkebunan sekitar 4808.70 Ha.
Co-Authors Abda Abda Abdul Rauf Adiasmara Giri, Nyoman Alfan Gunawan Ahmad Amir, Ahmad Aldrie Anita Zaitunah Arif NURYAWAN Arisandi, Dedi Aththorick, T. Alief Aznawi, Andi Aznan Cening Kardi Daniar Kusumawati DARMAWAN SETIA BUDI Deni Elfiati Erni Jumilawaty etti sartina siregar Hadinugroho, Dwi Lindarto Hany, Rizky Haryanti Haryanti Ibnu Rusdi Ifanda, Dayun Imlani, Ainulyakin Irvin, Simon Iwan RISNASARI Joko Sumarwan, Joko Jones, Clive Ketut Maha Setiawati Leopardas, Venus Loh, Jiun-Yan Meutia Nauly Mohammad Basyuni Mohammad Faizal Ulkhaq Mubaraq, Alfian Muhammad Marzuqi Novita Anggraini Oding affandi Pardede, Maria Agustina Pratiwi , Ni Putu Eka Pulungan, Maya Sari Rangkuti, Ahmad Baiquni Razali Ridwanti Batubara Rumahorbo, Novita Sari Samsuri Siti Subaidah Sivaipram, Itchika Sri Hastuti, Liana Dwi Sudewi Sudewi Sulistyono, Nurdin T Sabrina Tridjoko Tridjoko Uliya, Raihan Yasmina Nirmala Asih Yunasfi yunasfi yunasfi