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All Journal Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi BIOEDUSAINS: Jurnal Pendidikan Biologi dan Sains
Enni Halimatussadiyah Pakpahan
universitas prima indonesia
Agriculture, Biological Sciences & Forestry Education

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Analisis Faktor Abiotik dan Karakteristik Mangrove di Kawasan Hutan Mangrove Langsa Adi Hartono; Enni Halimatussadiyah Pakpahan; Hasbi Assidiqi Nasution; Siti Mutia; Setyawati; Nurshita Dwi Nanda
BIOEDUSAINS:Jurnal Pendidikan Biologi dan Sains Vol. 8 No. 6 (2025): BIOEDUSAINS:Jurnal Pendidikan Biologi dan Sains
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/r0avze83

Abstract

This study aimed to analyze the abiotic factors and morphological characteristics of mangrove vegetation in the Langsa Mangrove Forest area, Aceh. The research was conducted through direct field exploration using descriptive–quantitative methods, involving the observation of vegetative and generative organs of mangrove species and measurement of environmental parameters such as salinity, pH, temperature, and total dissolved solids (TDS). Morphological data were documented and identified using field guides, while abiotic parameters were measured in situ using standard instruments (pH meter, salinometer, DO meter, and thermometer). The results identified eleven mangrove species, including Rhizophora mucronata, R. Apiculata, R. Stylosa, Avicennia alba, Kandelia obovata, Ceriops tagal, Xylocarpus granatum, Acanthus ilicifolius, Scyphiphora hydrophyllacea, Acrostichum aureum, and Casuarina equisetifolia. Each exhibited distinctive morphological adaptations such as prop roots, pneumatophores, thick waxy leaves, and viviparous fruits that support survival in high-salinity and anaerobic conditions. The abiotic data showed an average salinity of 0.92% (≈8.82 ppt), water pH 6.68, soil pH 5.74, temperature 29.18 °C, and electrical conductivity 17.25 mS/cm—values within the optimal range for mangrove growth. These findings indicate that the Langsa mangrove ecosystem remains stable and ecologically healthy, supporting high species diversity. The study concludes that the interaction between abiotic conditions and plant morphology determines the ecological balance of the Langsa mangrove habitat, highlighting the importance of sustainable management and conservation of this coastal ecosystem. Keywords: abiotic factors, environmental parameters, Langsa Mangrove Forest, mangrove ecology, morphological adaptation
Quantitative analysis of nuclear morphological alterations in oral mucosal epithelial cells exposed to electromagnetic radiation from mobile devices Enni Halimatussadiyah Pakpahan; Adi Hartono
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.v8i2.4763

Abstract

Electromagnetic wave (EMW) radiation from mobile devices has raised public health concerns due to its potential biological effects on rapidly regenerating tissues such as the oral mucosa. This study quantitatively analyzed nuclear morphological alterations in oral mucosal epithelial cells following controlled EMW exposure. A quasi-experimental pretest–posttest control group design was conducted with 30 healthy participants aged 18–25 years, randomly assigned to control (n = 15) and treatment (n = 15) groups. The treatment group was exposed to EMW at 1800 MHz for 60 minutes per day over 14 consecutive days, using an active smartphone placed 1 cm from the right cheek during a simulated voice-call condition. The control group received no direct exposure. Buccal epithelial cells were collected via oral swab, fixed in Carnoy’s solution, stained with hematoxylin–eosin, and observed under a light microscope at 400× magnification. Quantitative assessment focused on three types of nuclear abnormalities: pyknosis, karyorrhexis, and karyolysis. The Independent Samples t-test showed a significantly higher mean number of nuclear abnormalities in the exposed group than in the control group (12.47 ± 3.15 vs. 4.86 ± 1.92 cells/field; p < 0.001). Pyknosis was the most frequent alteration (58.3%), followed by karyorrhexis (26.7%) and karyolysis (15.0%). All procedures were approved by the institutional ethics committee. In conclusion, short-term exposure to 1800 MHz EMW from mobile devices under controlled conditions can induce measurable degenerative nuclear changes in oral epithelial cells, suggesting cellular susceptibility to non-ionizing radiation at the cytomorphological level.
Co-Authors Adi Hartono Hasbi Assidiqi Nasution Nurshita Dwi Nanda Setyawati Siti Mutia