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All Journal Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Journal of Education, Humaniora and Social Sciences (JEHSS) Best Journal (Biology Education, Sains and Technology) Jurnal Pengabdian Mitra Masyarakat
Edi Azwar
FKIP Universitas Islam Sumatera Utara
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Education Health Professions Immunology & microbiology Law, Crime, Criminology & Criminal Justice Public Health Social Sciences

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Vegetation diversity of mangrove forest in Percut Village, Percut Sei Tuan District, North Sumatra Edi Azwar; Yusri Feviani; Bertaulina Haloho; Mhd. Rafi'i Ma'arif Tarigan
Jurnal Biolokus : Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 8, No 2 (2025): December
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/biolokus.v8i2.4808

Abstract

This study aimed to analyze the vegetation diversity of mangrove forest in Percut Village, Percut Sei Tuan District, North Sumatra. A quantitative descriptive method with a field survey approach was employed, using purposively selected stations representing natural mangroves (Station I), mangroves adjacent to fishponds (Station II), and mangroves near an ecotourism area (Station III). Data were collected using 5 × 5 m² plots with 10 m spacing, including species identification, abundance measurements, and physicochemical parameter assessments (temperature, salinity, soil pH, and substrate texture). Vegetation characteristics were analyzed using the Shannon–Wiener diversity index (H’), evenness index (E), and Simpson’s dominance index (D). Results showed that environmental parameters across stations remained within the optimal range for mangrove growth (temperature 18.6–19.7°C, salinity 16.5–19‰, and pH 7–8.5), though variations indicated differing levels of anthropogenic pressure. Eight true mangrove species were identified: Sonneratia alba, Bruguiera cylindrica, Nypa fruticans, Acanthus ilicifolius, Rhizophora apiculata, Avicennia marina, Rhizophora mucronata, and Xylocarpus granatum. Vegetation analysis revealed a strong dominance of Rhizophora apiculata and Bruguiera cylindrica, while Xylocarpus granatum and Rhizophora mucronata occurred in limited numbers. The Shannon–Wiener diversity index (H’ = 0.8442) indicated low diversity and uneven species distribution, suggesting community instability linked to anthropogenic disturbances. These findings highlight the ecological impacts of land conversion and tourism activities on mangrove ecosystems and emphasize the need for conservation and rehabilitation efforts to maintain biodiversity and ecosystem services in the Percut Mangrove Forest.
Diversity of Pollinating Insects in Antigonon leptopus at PTPN IV Kebun Melati Perbaungan and Its Development as a Monograph Book for Biology Learning Riza Sibuea; Sularno Sularno; Edi Azwar
Journal of Education, Humaniora and Social Sciences (JEHSS) Vol 9, No 1 (2026): Journal of Education, Humaniora and Social Sciences (JEHSS), August
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jehss.v9i1.3176

Abstract

Pollinator insects have a crucial ecological role in supporting the reproduction of flowering plants and maintaining ecosystem balance, especially in oil palm plantation agroecosystem areas. This study aims to analyze the diversity of pollinating insects in Bridal Tear flowers (Antigonon leptopus) at PTPN IV Kebun Melati Perbaungan and develop the results of the research into a monograph book for biology learning. The research was carried out for three months (January-March 2026) at three observation stations using an exploratory survey method using a sweeping net. The results of the study found 179 individuals of pollinating insects classified into 7 species, 7 genera, 5 families, and 2 orders (Hymenoptera and Lepidoptera). Species identified include Apis cerana, Xylocopa latipes, Vespa affinis, Suastus gremius, Neptis hylas, Graphium sarpedon, and Cepora nerissa. Analysis of the ecological index showed moderate diversity values (H'=1.884), high uniformity (E=0.968), and low dominance (D=0.159), indicating a relatively stable community structure. The highest abundance is found in the morning and evening. This study concludes that Antigonon leptopus plays an important role as a source of food for pollinating insects and the results of the research have the potential to be developed as a monograph book to support biology learning.
Love for Diversity: An Insect Community Study on Turnera sp. at the Perbaungan Oil Palm Plantation for the Development of Animal Ecology Teaching Materials Mariana Ritonga; Edi Azwar; Sularno Sularno
Journal of Education, Humaniora and Social Sciences (JEHSS) Vol 9, No 1 (2026): Journal of Education, Humaniora and Social Sciences (JEHSS), August
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jehss.v9i1.3177

Abstract

This study aims to analyze the diversity of insects in the eight-o'clock flowering plant (Turnera sp.) at PTPN IV Adolina Perbaungan Garden and compile the results as teaching materials for Animal Ecology in the form of a monograph book. The study used a quantitative descriptive method with purposive sampling techniques at three observation stations representing microhabitat variations. Data collection was carried out through direct observation, insect capture using sweeping nets and hand picking, morphological identification, and air temperature and humidity measurements. The results of the study found 356 individual insects consisting of 21 species, 5 orders (Hymenoptera, Lepidoptera, Diptera, Coleoptera, and Hemiptera), and 16 families. The value of the Shannon-Wiener diversity index (H') ranges from 1.1395-1.1547 (medium category), the Pielou uniformity index (E) ranges from 0.3870-0.3995 (low category), and the Simpson dominance index (C) ranges from 0.0830-0.0919 (low category). The pollinator group dominated the community with 215 individuals (60.39%). The results of the research were compiled into a monograph book containing species identification, morphological characteristics, visual documentation, ecological roles, and analysis of community structure as a contextual learning resource in the Animal Ecology course.
Co-Authors Amoi Sinaga Anggiani Anggiani Anggun Ninda Syahputri Antoni Bertaulina Haloho Budi, Rahmad Setia Budianto , Eka Hidayat Nst Jalilah Ilmiha Mariana Ritonga Masnadi , Masnadi Munir Maulidya Rahmah Mbera Mehuli Mhd. Rafi'i Ma'arif Tarigan Nurhasnah Manurung, Nurhasnah Pandu Prabowo W. Riza Sibuea Sis Maya Sri Hastuti Br Saragih Sucy Nurani Putri Sularno Sularno Teddy Hardiansyah Warsodirejo, Pandu Prabowo Yusri Fefiani Yusri Feviani Zikir Amin Nazara Zul Aida