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All Journal Biocaster : Jurnal Kajian Biologi Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan
Nelda Anasthasia Serena
Program Studi Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Mulawarman, Jalan Muara Pahu, Samarinda, Kalimantan Timur 75123, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science Immunology & microbiology Mathematics Physics Social Sciences

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Identifikasi Cemaran Mikroplastik pada Ikan Nila (Oreochromis niloticus) dan Ikan Puyau (Osteochilus vittatus) di Perairan Waduk Benanga, Samarinda Yasmin Athirah Ramadhan; Masitah Masitah; Ruqqoyah Nasution; Nelda Anasthasia Serena
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 1 (2026): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i1.1035

Abstract

Benanga Reservoir in Samarinda serves as a water source, river conservation area, and fishery location that supports local subsistence and commercial activities. However, the suboptimal management of plastic waste around Benanga Reservoir increases the risk of microplastic pollution that threatens human health and food security through fish consumption. This study aims to identify the types and amounts of microplastic contamination in Tilapia (Oreochromis niloticus) and Puyau (Osteochilus vittatus) in Benanga Reservoir waters. The research method is quantitative-descriptive exploratory. Fish samples were taken by purposive sampling method at 4 station points using a net (gillnet), the gills and digestive tract were destroyed using 10% KOH and flotation with 0.9% NaCl to be observed using a light microscope with the help of optilab viewer. Data were analyzed using descriptive statistics. Analysis of 12 fish samples showed the presence of microplastic contamination in all samples with a total of 155 particles including fiber, film, fragment, and pellet forms with various colors and sizes. The average abundance of tilapia is 11.4 particles/tail, while in puyau fish it reaches 14 particles/tail. Cumulatively, the level of microplastic contamination in puyau fish (98 particles) was identified as higher than in tilapia (57 particles), with fiber particles predominating in both species. The presence of microplastics in this local fish population emphasizes the urgency of waste management and pollution mitigation to ensure food security and ecosystem integrity in the Benanga Reservoir.
Pengaruh Penerapan Model Pembelajaran Project Based Learning dengan Pendekatan Design Thinking terhadap Kemampuan Berfikir Kreatif Rita Purbianti; Jailani Jailani; Dora Dayu Rahma Turista; Suparno Putera Makkadafi; Nelda Anasthasia Serena
Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Vol. 5 No. 3 (2025): July
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/panthera.v5i3.496

Abstract

This research is motivated by the lack of variety in learning models implemented at SMPN 45 Samarinda, which causes students to tend to be passive and lack creative thinking skills. This study aims to analyze the effect of the Project-Based Learning (PjBL) model with a Design Thinking approach on the creative thinking skills of seventh-grade students. The method used was a quasi-experimental design with a nonequivalent control group design. The sample consisted of two classes: VIIA as the experimental class and VIIB as the control class, each with 25 students. The research instrument was a pre-test and post-test essay test based on creative thinking indicators. Data analysis used an Independent Sample t-Test with a significance level of 5%. The results showed that the calculated t value (20.545) > t table (1.677), so H0 was rejected and Ha was accepted. Thus, the implementation of the Design Thinking-based PjBL model had a significant effect on improving students' creative thinking skills.
Co-Authors Dora Dayu Rahma Turista Jailani Jailani Masitah Masitah Rita Purbianti Ruqqoyah Nasution Suparno Putera Makkadafi Yasmin Athirah Ramadhan