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All Journal SCIENCE : Jurnal Inovasi Pendidikan Matematika dan IPA ARRUS Journal of Social Sciences and Humanities Berkala Ilmiah Biologi
Bahar, Irnayanti
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Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Education Immunology & microbiology Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Social Sciences Veterinary

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Application of a Collaborative Learning Model Accompanied by Quantum Learning Strategies in Improving Class VIII Science Biology Learning Outcomes at Junior High School 2 Satap Balla Rasjid, Yusniar; Bahar, Irnayanti
ARRUS Journal of Social Sciences and Humanities Vol. 3 No. 3 (2023)
Publisher : PT ARRUS Intelektual Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35877/soshum1963

Abstract

This research is a Classroom Action Research (PTK) which aims to find out whether the application of a collaborative learning model accompanied by a quantum learning strategy can improve student learning outcomes in class VIII SMP Negeri 2 Satap Balla. The subjects of this study were class VIII students of SMP Negeri 2 Satap Balla in the odd semester of the 2022/2023 school year with a total of 24 students, with details of 15 male students and 9 female students. Cycle I and cycle II were held in four meetings each including giving tests. Data collection was carried out using student learning outcomes tests at the end of each cycle, and observations at each meeting. Data were analyzed using quantitative descriptive analysis. The results showed that in the first cycle the average value was 68.33 with the completeness of class 9 students (37.5%), and the average in the second cycle was 86.66 with the completeness of the class of 21 students (87.5%) . It can be concluded that the application of a collaborative learning model accompanied by a quantum learning strategy can improve learning outcomes in class VIII Biology at SMP Negeri 2 Satap Balla.
KELIMPAHAN DAN KEPADATAN TERIPANG ( HOLOTHUROIDEA ) DI DESA LAU-LAU KABUPATEN KEPULAUAN ARU Baso, Siska Bin; Samsi, Andi Nur; Bahar, Irnayanti
SCIENCE : Jurnal Inovasi Pendidikan Matematika dan IPA Vol. 5 No. 2 (2025)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia (P4I)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/science.v5i2.4873

Abstract

This study aims to identify the abundance and density of sea cucumbers (Holothuroidea) in the intertidal zone of Lau-Lau Village Coastal Waters, Aru Islands Regency. The research consisted of two phases: implementation and identification. The method used was the transect quadrat method (systematic random sampling) with a size of 2x2 meters. Data were calculated and presented in tabular form. Abundance and density were measured at each station. The results indicated that the distance between the shoreline and the transect line was 20 meters. A total of six sea cucumber species were found out of the 60 species recorded in Indonesia. The identified species were Stichopus ocellatus, Holothuria scabra, Bohadschia marmorata, Bohadschia vitiensis, Stichopus monotuberculatus, and Actinopyga lecanora. The highest abundance was found in Holothuria scabra with a total of 64 individuals, while the lowest was in Actinopyga lecanora with only 1 individual. The highest density was also observed in Holothuria scabra, at 0.92 individuals/m², whereas the lowest was in Actinopyga lecanora, with a density of 0.02 individuals/m². ABSTRAKPenelitian ini bertujuan untuk mengidentifikasi kelimpahan dan kepadatan teripang (Holothuroidea) di zona intertidal di Perairan Pantai Desa Lau-Lau Kabupaten Kepulauan Aru. Penelitian ini memiliki dua tahapan yaitu tahapan pelaksanaan dan tahapan identifikasi. Metode yang digunakan adalah metode kuadrat transek atau (systematic random) berukuram 2x2 meter. Data dikalkulasi dan disajikan dalam tabel. Kelimpahan dan Kepadatan dihitung pada masing-masing stasiun. Hasil yang ditemukan yaitu jarak antara garis pantai sejajar transek yaitu 20 meter. Jenis teripang yang ditemukan ada 6 spesies dari 60 spesies yang ada di Indonesia. Jenis teripang yang ditemukan yaitu Stichopus ocellatus, Holothuria scabra, Bohadschia marmorata, Bohadschia Vitiensis, Stichopus monotuberculatus dan Actinopyga lecanora. Kelimpahan tertinggi terdapat pada jenis teripang Holothuria scabra dengan total 64 individu, sedangkan kelimpahan terendah terdapat pada jenis teripang Actinopyga lecanora dengan total 1 individu. Kepadatan tertinggi terdapat pada jenis teripang Holothuria scabra dengan jumlah kepadatan 0,92 ( 1 ekor/m² ) dan kepadatan terendah terdapat pada jenis teripang Actinopyga lecanora dengan jumlah kepadatan 0,02 ( 0 ekor/m² ).
Profil Bioaktif Madu Lebah Tak Bersengat Berdasarkan Jenis Sumber Nektar Bahar, Irnayanti; Astuti, Wiwik Wiji; Suhri, Andi Gita Maulidyah Indraswari
Berkala Ilmiah Biologi Vol 16 No 2 (2025)
Publisher : Fakultas Biologi Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/bib.v16i2.21907

Abstract

Stingless bee honey (Meliponini) is a natural product with strategic value in the functional food and health industries due to its unique bioactive compound content. However, variations in honey composition based on nectar sources in Indonesia, have not been thoroughly documented. This study aims to analyze the differences in moisture content, total sugars, polyphenols, antioxidant activity, and antimicrobial properties of stingless bee honey derived from different nectar sources. Honey samples were obtained from three distinct vegetative sources: acacia, rambutan, and longan nectars. Laboratory analyses were conducted using standard methods, including spectrophotometry for measuring sugar and polyphenol contents, DPPH assay for antioxidant activity, and disc diffusion method for antimicrobial testing. The results showed that honey from rambutan nectar had the lowest moisture content (23.5% ±1.2), the highest polyphenol content (356 ±21 mg GAE/100g), and the strongest antioxidant activity (IC50 12.4 mg/mL). In addition, this honey also demonstrated antimicrobial activity against Staphylococcus aureus with an inhibition zone of 14.2 ±1.5 mm. These findings indicate that nectar source plays a crucial role in determining honey quality, and may serve as a foundation for the development of high-value honey products based on local floral biodiversity.
Co-Authors Andi Gita Maulidyah Indraswari Suhri Astuti, Wiwik Wiji Baso, Siska Bin Nur Samsi, Andi Yusniar Rasjid, Yusniar