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23 results for “Wahyudi”
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Research ArticleOpen accessIn the author namesBiodiversity and Spatial Distribution of Hornbills in Pondok Buluh Educational Forest, North Sumatra, IndonesiaBudi Utomo, Nabillah Saraswita, Cindy Siahaan et al.Hornbills are large birds, several species of which are protected under national and international conservation legislation and face significant extinction risk. This study was conducted in the Specific Purposes Pondok Buluh Forest Area, North Sumatra, Indonesia, with the aim of identifying hornbill species present, estimating their population density, and characterizing their habitat. Hornbill surveys were carried out using the point … …OnLine Journal of Biological Sciences, Vol. 26, Issue 1 · 28 Mar 2026 · 1,408 accessesView PDFCite
Research ArticleOpen accessIn the author namesCombination of Organic, Chemical and Biological Fertilizers to Accelerate Mangrove Growth on the East Coast of Sumatra, IndonesiaBudi Utomo, Yuda Ilham Ramadhan, Yunasfi et al.Efforts to rehabilitate mangroves often do not yield satisfactory planting results. Low maintenance measures due to the tidal situation of the area make it difficult for rehabilitation actors to carry out fertilization and insertion. This study aims to increase the growth of Rhizophora mucronata with fertilization treatment during planting with various biological fertilizers. The study was designed using a completely … …OnLine Journal of Biological Sciences, Vol. 25, Issue 3 · 24 Oct 2025 · 2,506 accessesView PDFCite
Research ArticleOpen accessIn the author namesThe Impact of Road Opening on Vegetation Damage in the Bukit Barisan Forest Park Protected Forest in IndonesiaBudi Utomo, Bungaran Johanes Tambunan, Rizky Wahyudi et al.Road opening on the Medan-Berastagi alternative route will begin in 2023 with a track length of approximately 55.87 km. The aim of this study was to analyze land cover in forest areas and recommend plants around the opening of the Medan-Berastagi alternative route, Kutalimbaru District. Data processing and retrieval was carried out in November 2023-January 2024. Calculation of the 2018 … …OnLine Journal of Biological Sciences, Vol. 25, Issue 1 · 10 Feb 2025 · 4,019 accessesView PDFCite
Research ArticleOpen accessIn the author namesAnalysis of Land Cover Changes and Sustainable Reforestation in Sianjur Mula-Mula District, Samosir Regency, IndonesiaBudi Utomo, Rezky Nizar, Rizky Wahyudi et al.The increase in population and technological advances have had a significant impact on land use changes. there are changes in land cover 2017-2022 in the local ecosystem. there have been significant changes but can still be maintained. This is to prevent the extinction of species such as fish, land animals and other marine animals. Changes in land cover that are … …OnLine Journal of Biological Sciences, Vol. 24, Issue 4 · 6 Jun 2024 · 5,187 accessesView PDFCite
Research ArticleOpen accessIn the author namesStrengthening the Integrity of Forwarding First Communication Using Forward Key Chain and Bloom Filter in the Wireless Sensor NetworksMuhammad Taqqyyudin Ilham Ramadhan, Farah Afianti, Bambang Ari Wahyudi et al.Wireless Sensor Networks (WSNs) are collections of sensor nodes that can help people monitor things wirelessly, replacing the need for human presence in hard-to-reach areas. While forwarding first communication reduces communication delays among the sensor nodes, it lacks a security mechanism. Since sensor nodes have limited resources, using complex security measures can shorten their lifetime. This study proposes a protocol … …Journal of Computer Science, Vol. 19, Issue 3 · 14 Feb 2023 · 5,664 accessesView PDFCite