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PLANTING OF RHIZOPORA TYPES IN MANGROVE FORESTS PERCUT SEI TUAN NORTH SUMATERA Ridahati Rambey; Delvian; Deni Elfiati
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 3 No. 1 (2018): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Mangrove forest is a tropical beach vegetation community dominated by several tree species that can grow and develop in tidal and muddy beaches. Some mangrove areas recently have been damaged due to illegal activities carried out by various parties, one of which is the East Coast of Sumatra in the Sub District Percut Sei Tuan, Deli Serdang District, Province of North Sumatra. The purpose of the activities is to focus on replanting mangrove lands that have been damaged by local species. The growned in Tanjung Rejo Village Percut Sei Tuan buds are like Rhizopora stylosa, Rhizopora apiculata and Avicennia marina type. Percentage of growing plants were R. stylosa (92.37%), R. apiculata (90%), mixed propagules of R. stylosa and R. apiculata (90%) and A. marina (56%) respectively. Overall the rehabilitation of mangrove forest is categorized as successful, but only one species of the smallest growing with percentage is A. marina (56%) this is because the location of planting is adjacent to the sea where the plants can not stand the tidal currents.

Agroforestry Land Management with the Community of Candi Rejo Village, Biru-Biru District, Deli Serdang, North Sumatra Delvian; Elfiati, Deni; Rambey, Ridahati
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2019): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Community Service Program in agroforestry land management together with the people of Candi Rejo of Village, Biru- Biru Sub-District, Deli Serdang, North Sumatra, aims to assist the community in managing agroforestry land to improve community skills in managing their agroforestry land. Some of the activities carried out are making compost using cocoa waste and animal husbandry, prunning cocoa plants to reduce pest and disease attacks and planting mindi, avocado, durian species for enrichment of species on agroforestry land. Based on the result of interviews with farmers that the use of compost is more effective in increasing cocoa production.

Mangrove Utilization as Sources of Ruminant Feed in Belawan Secanang Subdistrict, Medan Belawan District Fahriza Zuhri; Delvian; Ma’ruf Tafsin
Journal of Sylva Indonesiana Vol. 5 No. 01 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Mangroves hold several benefits, one of which is barriers from marine abrasion, food sources, aquatic habitats, carbon sinks and storages, places for education and training, ecotourism sites, and sources of ruminant feed. This study aimed to determine the potential of mangroves as sources of ruminant feed and its carrying capacity for sustainable mangrove utilization. The research was conducted in Belawan Sicanang Subdistrict by using purposive sampling for vegetation analysis and questionnaire method. Avicennia marina, Bruguiera sexangula, B. gymnorrhiza, Nypa fruticans, Rhizophora apiculata, Sonneratia alba, and Thespesia populnea were among the mangrove species used by the farmer. The total capacity of mangrove species as ruminant feed in the animal unit (AU) was obtained as dry matter (835.48 AU), crude protein (481.24 AU), and total digestible nutrient (873.77 AU). The carrying capacity of mangroves as represented in the form of dry matter (13.74), crude protein (7.91), and total digestible nutrient (14.36), were categorized as safe. In addition, the potential additional populations based on the safe level of carrying capacity (2.5) was 273 AU, based on crude protein for 131 AU, and based on total digestible nutrients for 288 AU.

Similarity Analysis of Understorey Plant Species in Forest Areas Sidabukke , Simon; Ternala Alexander Barus; Budi Utomo; Delvian; Fathiatul Rizkia Aulin
Journal of Sylva Indonesiana Vol. 5 No. 02 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Many forests have substantial understorey plants. These plants have an important contribution to soil and water conservation. The similarity index determines the resemblance of species structure and composition in a community. This research is aimed to see the impact and relationship of changes in the allocation of forest areas to the similarity of understorey species. The research was conducted using the line plot sampling method, sized 2 m x 2 m, with the understorey plants observed have been measured from germination to young plant (height 1.5 m). The number of plots in the plantation forest is 480 plots, protected areas 224 plots, and natural forest 96 plots. Determination of the number of understorey plots based on the minimum representative area curve. A Similarity Index was performed to analyze the data.Â The results indicated that there is an impact of changes in the forest area on the similarity of understorey species. It is known from the low similarity index value at the research location. It is due to the differences in environmental factors at the two locations such as air humidity, air temperature, the intensity of sunlight, and different patterns of forest area management.

Analysis of land use (2013-2022) in the Gayo highlands, Aceh, Indonesia Arico, Zulfan; Rahmawaty; Delvian; Hamdani Harahap; Mohd Hasmadi Ismail
Global Forest Journal Vol. 1 No. 01 (2023): Global Forest Journal
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/gfj.v1i01.13252

Forest fragmentation is a threat to ecosystems in Indonesia caused by forest conversion to plantations. This study aims to analyze the use of land cover in the period 2013-2022. The research was conducted from November 2022 to January 2023 in the Gayo highland area by taking case studies in 2 regions including the Central Aceh District and Bener Meriah District. The research was carried out in several stages, namely: image pre-processing, image visual interpretation, making image classification class identifiers, and ground checking. The pre-processing stage is the preparation of tools and materials. Landsat 8 OLI imagery for the study area downloaded from the United States Geological Survey (USGS) website. The results of the research show that in the last 10 years there has been a decrease in the area of land cover in the exploration area of primary forest and secondary forest. Meanwhile, in the cultivation of dry fields, settlements, plantations and vacant land, land use has increased. Changes in the use of land cover are influenced by community activities in Central Aceh and Bener Meriah Regencies.

The Opportunity of Understorey Species to Absorb Secondary Metabolites in the Soil (Case Study in IUPHHK- Industrial Plantation Forests PT. Toba Pulp Lestari, Tbk) Sidabukke , Simon; Ternala Alexander Barus; Budi Utomo; Delvian; Mona Fhitri Srena
Journal of Sylva Indonesiana Vol. 3 No. 01 (2020): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

PT. Toba Pulp Lestari, Tbk is one of the industrial forestry companies with Eucalyptus as the main species. This research was conducted in a concession area located in Aek Nauli Plantation, Simalungun Regency, North Sumatra with an area of 22,533 Ha. The sample of this research is understorey species (height: 1.5 meters) under Eucalyptus stand in cycles 2, 3, 4 and 5 planted in 2015. To find out the composition of plant species, vegetation analysis was conducted initially by making minimum species-area curves to determine the number of plots. The placement of the sample starts with randomly distributed on plotted paths. The number of plots in each cycle is as many as 32 plots, 32 plots, 32 plots, 4 plots by 256 plots and 5 plots for 32 plots. The results of soil analysis found that secondary metabolic in eucalyptus soil classified into terpenoid which located at a distance of 50 cm (flat) and 100 cm (flat) from the tree at 2 years old Eucalyptus stand. The terpenoids also distributed in distance of 50 cm from trees with flat topography on 4 years old Eucalyptus stand. For 6 years old Eucalyptus stand, terpenoid distributed on 150 cm from a tree and there was also a saponin within 150 cm from a tree with sloping topography. If the dominant undergrowth grows were Strong and Senduduk, the secondary metabolism in the soil will be absorbed by this species.

Evaluating Fisheries Livelihoods: Socio-Economic Dimensions and Management Challenges Pulungan, Afran Rouzani; Wahyuningsih, Hesti; Delvian
Journal of Environmental and Development Studies Vol. 5 No. 02 (2024): 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.v5i02.16706

Fisheries management, which focuses on using fisheries resources to improve the livelihood of the fishing communities, has led to over-exploitation of fish resources on the east coast of North Sumatra. This has led to a decline in the potential of some fish species, which in turn has affected fishermen's incomes. This study aims to identify the socio-economic conditions of fishermen through the Ecosystem Approach to Fisheries Management (EAFM) and the factors that influence them. The data used are primary and secondary data, collected through observation, interviews, and literature studies. The study involved a sample of 64 fishermen from three locations along the eastern coast of Sumatra: Medan, Serdang Bedagai, and Deli Serdang. This research uses a descriptive qualitative method and the EAFM approach to analyze the social and economic conditions of fishermen in Medan, Deli Serdang, and Serdang Bedagai. The results of this study indicate that there has been a decline in the number of fishermen and the capture fisheries production at the research sites. The score of the social domain scored 55.55 (moderate), while the economic domain scored 66.67 (good) indicating effective but improvable management. The research results show that the indicators of stakeholder participation, utilization of local knowledge for fisheries management, asset ownership, and demand for fishery products are in the good category, while the indicators of fisheries conflicts and fishermen's household income are in the poor category, which needed to be the focus for improvement and enhancement.

PERTUMBUHAN Rhizophora stylosa PADA TAMBAK SILVOFISHERY DI DESA TANJUNG REJO KECAMATAN PERCUT SEI TUAN KABUPATEN DELI SERDANG Delvian; Ridahati Rambe; Edy Batara Mulya Siregar
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 2 No. 1 (2017): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Ekosistem hutan mangrove mempunyai manfaat ekonomi dan ekologi yang sangat besar namun keberadaannya terancam dengan kegiatan pembangunan tambak yang terus bertambah. Pengembangan tambak dengan sistem silvofishery diharapkan dapat mempertahankan fungsi ekologi hutan mangrove tanpa mengabaikan kepentingan ekonomi bagi masyarakat di wilayah pesisir. Kegiatan ini bertujuan untuk mengetahui pertumbuhan R. stylosa yang ditanam pada lahan tambak milik masyarakat. Lahan tambak digunakan untuk budidaya kepiting dan ikan nila. Variabel amatan berupa pertambahan tinggi dan diameter tanaman R. stylosa pada kedua lahan tambak tersebut. Hasil pengukuran menunjukkan bahwa pertambahan tinggi dan diameter R. stylosa pada lahan tambak kepiting lebih baik dibandingkan dengan lahan tambak ikan nila.

Agroforestry Land Management with the Community of Candi Rejo Village, Biru-Biru District, Deli Serdang, North Sumatra Delvian; Elfiati, Deni; Rambey, Ridahati
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2019): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Community Service Program in agroforestry land management together with the people of Candi Rejo of Village, Biru- Biru Sub-District, Deli Serdang, North Sumatra, aims to assist the community in managing agroforestry land to improve community skills in managing their agroforestry land. Some of the activities carried out are making compost using cocoa waste and animal husbandry, prunning cocoa plants to reduce pest and disease attacks and planting mindi, avocado, durian species for enrichment of species on agroforestry land. Based on the result of interviews with farmers that the use of compost is more effective in increasing cocoa production.

Cultivation of Tilapia (Oreochromis niloticus) using the silvofishery method in Tanjungrejo, Percut Sei Tuan, North Sumatra Province Elfiati, Deni; Susetya, Ipanna Enggar; Delvian; Rambey, Ridahati; Fadhilah, Amanatul
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 6 No. 1 (2021): ABDIMAS TALENTA : Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Silvofishery is a mangrove ecosystem management model that combines fisheries and forestry aspects. This method is also a solution for cultivators to cultivate fish without damaging the mangrove ecosystem. It is hoped that the results of this service activity can be used as a model or input for the community in order to manage ponds with silvofishery technology without having to do open ponds which will slowly damage the environment. This community service activity aimed to provide information and skills to partner groups on the silvofishery method. Other aim was to assist partners in the tilapia rearing process. Based on the description of the problems and objectives of this community service activity, the activities that have been carried out are counseling about silvofishery. The second activity, provision of tilapia seeds and feed for fish rearing activities in silvofishery ponds. The results obtained were increased partners' knowledge and skills regarding silvofishery. The people of Tanjungrejo Village also get tilapia cultivation products that can be traded without cutting down mangrove trees.

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