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Department of Integrated Science, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang D5 Building, 1st Floor, Sekaran Campus, Gunungpati, Semarang, Indonesia 50229
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INDONESIA
Journal of Environmental and Science Education
ISSN : 27970175     EISSN : 27752518     DOI : -
Core Subject : Social,
Journal of Environmental and Science Education publishes original articles on the latest issues and trends occurring internationally in environmental science, environmental education, science curriculum, instruction, learning, policy, and preparation of science teachers with the aim to advance our knowledge of science education theory and practice.
Articles 33 Documents
Risk Assessment of the Impact of Oil Spill on the Heavy Metal Content of Santa Barbara River in Bayelsa State, Nigeria Iyama, William Azuka; Egbunefu, Chukwudi Omeni; Nakara, Timothy; Emejuru, Stella; Nwagbara, Victor Uzoma
Journal of Environmental and Science Education Vol 3 No 1 (2023): Journal of Environmental and Science Education : April 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jese.v3i1.61481

Abstract

This study was aimed at assessing both the effect (risk) and impact of a recent oil spill on heavy metal concentration in the Santa Babara River in Bayelsa State, Nigeria. Samples were collected and preserved based on standard methods. The heavy metals of interest were Mercury (Hg), Arsenic (As), Cadmium (Cd), Chromium (Cr) and Copper (Cu) due to their levels of toxicities and presence in water bodies while the five study stations were Worokuma (W), Uwanga (W), Tuweni (T), Shellikiri (S), Inarakiri (I) and Esenfakiri (E). The solar thermos elemental flame atomic absorption spectrometer (AAS), model SE-71096 made in Germany with detection limit of 0.001 mg·kg−1 was used for the heavy metal analysis. The trend of heavy metal abundance was found in this order Cr>Cu>Cd>Pb>Hg=As. All the detectable metals had risk index of greater than 5 but the highest was found in the order, Cd> Pb > Cu > Cr (149, 35, 26 and 12 respectively) which meant extremely high level of pollution. This also indicated the probability of non-carcinogenic effects occurring and increases as HI increases signifying carcinogenic risk via direct ingestion of water. Graphs were used to show trends in both mean heavy metal concentrations and risk assessment indices. Chromium and Pb had moderate contaminations for CF and CDI values, hence regular monitoring of the Santa Barbara River is of essence as most of the inhabitants take this as the only source of potable water as their wells have very high iron content.
Tidal Flood Susceptibility Mapping and Community Adaptation Assesment in Semarang Utara District Jabbar, Abdul; Fariz, Trida Ridho; Putri, Salma Dwi; Rahmawati, Dwi; Prahmani, Yonika Sindiana; Putri, Rizda Amalia; Siregar, Zepanya Gladis Tabita; Holeng, Vera Angelina; Chasanah, Aisya Nurul
Journal of Environmental and Science Education Vol 3 No 1 (2023): Journal of Environmental and Science Education : April 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jese.v3i1.64910

Abstract

North Semarang District is one of the areas that is often affected by tidal floods. This study will discuss flood distribution through tidal flood susceptibility mapping and identify adaptations. The first step is to carry out flood susceptibility mapping using DEMNAS data and sea tides. The second stage is to determine the key areas based on the tidal flood susceptibility map made. Key areas are useful for identifying forms of community adaptation to tidal floods through data collection in the form of observations and interviews. The mapping results show that the flood susceptibility area reaches 582.89 Ha or around 50% of the area of North Semarang District. The key areas with high susceptibility are settlements on Jalan Tambakrejo, Tanjungmas Village and it is known that the community responds by adapting patterns to changes in physical infrastructure, economic activity, and social development.
Community Structure and Composition of Rice Weed (Oryza sativa L.) In Banyubiru Village, Semarang Regency Haris, Amnan; Ngabekti, Sri
Journal of Environmental and Science Education Vol 3 No 1 (2023): Journal of Environmental and Science Education : April 2023
Publisher : Universitas Negeri Semarang

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

Abstract

Weeds are a term used for disturbing plants that live with cultivated plants and if not controlled will reduce the quantity and quality of crop yields. The purpose of this study was to analyze the composition and community structure of weeds in rice aged 8 weeks. The benefits of this research are expected to provide information about the types of weeds and their characteristics. This research was conducted in Banyubiru Village, Semarang Regency; and the Unnes Biology Plant Taxonomy Laboratory. The method used in this study was random sampling using 9 plots measuring 1 m x 1 m. The results showed that there were 11 families, 17 species and 526 individuals with the highest Importance Value Index found in the species Cyperus diiformis L, namely 0.79. The weed diversity index is moderate, namely H' = 1.25.

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