Jambura Edu Biosfer Journal

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EISSN : 2656-0526
Total articles ≅ 10
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Siti Ramla S. Kahar, Ani Hasan, Chairunnisa Lamangantjo
Jambura Edu Biosfer Journal, Volume 1, pp 64-71; https://doi.org/10.34312/jebj.v1i2.2430

Abstract:
Entomopathogen is one of the biological agents that infects the insects and can damage the body's metabolic system of insects. This objective of the study were to determine the entomopathogenic activity of S. marcescens on mortality of coconut leaf beetles larvae (B. longissima), and the time needed to reach LT50. The study used an experimental method with 6 treatments of varying S.marcescens volumes, consisting of A (distilled water as a control), B (5 ml), C (7.5 ml), D (10 ml), E (12.5 ml), and F (15 ml) with 4 replications. The data were analyzed using ANOVA and Probit LT50 test. The results showed that the volume of S.marcescens had an effect on mortality of coconut leaf beetle B. longissimi larvae. The best mortality rate at treatment E is 78% with the value of LT50 in treatment F is 42.15 hours. S.marcescens has entomopathogenic activity in coconut leaf beetles (B. longissima) Gestro larvae
Melisnawati H Angio, Rony Irawanto
Jambura Edu Biosfer Journal, Volume 1, pp 41-46; https://doi.org/10.34312/jebj.v1i2.2476

Abstract:
Indonesian local fruit is a type of local fruit that grows naturally and originated from the Indonesian region. The research aimed at determined the diversity of Indonesian local fruits that can be consumed by humans so that they can be the basis for management and policy making related to the creating of route-tracking and thematic gardens of local fruit in Purwodadi Botanical Gardens. The data was collected using direct observation method, while the utilization and potential species data are based on interviews and literature studies. The result showed, there are 96 species of local fruit that are included in 24 families.
Ismiyati Uno, Abubakar Sidik Katili, Zuliyanto Zakaria
Jambura Edu Biosfer Journal, Volume 1, pp 53-63; https://doi.org/10.34312/jebj.v1i2.2429

Abstract:
The research was aimed at explaining the morphometric ratio of fiddler crab (Uca sp.) based on the difference among the population in Tanjung Panjang Nature Preserve. The technique of data collection was exploration with quantitative descriptive approach. The data analysis test applied average test and T- test. Findings revealed that the variation of the characteristics of morphometric of the two population was different on the characteristics of major claws propondus (2,55±0,16 mm) with the highest variation was found in station II (0,75±0,09 mm). The morphometric characteristic variations which were significantly different between the two population were carapace, major claws, and mouth. The variations among the population were clearly, seen through carapace posterior width, major claws propondus, major claws dactylus major claws and mouth length.
Rizal Suleman, , Aryati Abdul
Jambura Edu Biosfer Journal, Volume 1, pp 72-81; https://doi.org/10.34312/jebj.v1i2.2432

Abstract:
Research aimed to find out morphological characteristics and proximate analysis of Momala Gorontalo corn (Zea mays, L.) variety. The research applied observation method by doing observation towards Momala Gorontalo corn variety. The data analysis used quantitative descriptive analysis. The morphology characteristics of Momala Gorontalo corn were average plant height was 146.47 cm; average cob height was 73.88 cm; average stem perimeter was 8.46 cm; average leaves number was 12; average leaves strand was 86.59 cm; average leaves midrib was 16.25 cm; average leaves strand width was 8.71 cm; average leaves strand direction was a bit curving; average axilla corner was 39,950; average leaves tip shape was sharp; at grain was 5,86%; at corn hair was 83,76%. Average cob length was 12,58 cm; average cob diameter was 3,34 cm; average cob weight with corn husk was 88,58 g, average cob weight without corn husk was 60,74 g, average seeds number per line was 20, and weight of 1000 grains was 272 g. The proximate analysis of Momala Gorontalo corn for moisture content was 14,82 ± 0,04%; ash content was 1,35 ± 0,01%; crude protein content was 11,51 ± 0,24%; crude fat content was 4,62 ± 0,48%; carbohydrate content was 67,68 ± 0,67%; value of Nitrogen Free Extract (BETN) was 58,36 ± 0,93% and value of metabolic energy was 2886,25 ± 14,68 Kkal/100 g
Surenshy Bulu, Novi Ivonne Bullu, Anggreini Dn. Rupidara
Jambura Edu Biosfer Journal, Volume 1, pp 47-52; https://doi.org/10.34312/jebj.v1i2.2518

Abstract:
Entomopathogen is one of the biological agents that infects the insects and can damage the body's metabolic system of insects. This objective of the study were to determine the entomopathogenic activity of S. marcescens on mortality of coconut leaf beetles larvae (B. longissima), and the time needed to reach LT50. The study used an experimental method with 6 treatments of varying S.marcescens volumes, consisting of A (distilled water as a control), B (5 ml), C (7.5 ml), D (10 ml), E (12.5 ml), and F (15 ml) with 4 replications. The data were analyzed using ANOVA and Probit LT50 test. The results showed that the volume of S.marcescens had an effect on mortality of coconut leaf beetle B. longissimi larvae. The best mortality rate at treatment E is 78% with the value of LT50 in treatment F is 42.15 hours. S.marcescens has entomopathogenic activity in coconut leaf beetles (B. longissima) Gestro larvae.
Syam Kumaji, Abubakar Sidik Katili, Pinangsi Lalu
Jambura Edu Biosfer Journal, Volume 1; https://doi.org/10.34312/jebj.v1i1.2042

Abstract:
Penelitian ini bertujuan untuk mengetahui mikroalga epilitik sebagai bioindikator perairan sungai Bulango. Penelitian ini adalah penelitian deskriptif menggunakan metode survey. Sampel yang ditemukan diidentifikasi dengan menggunakan kunci identifikasi dan data dianalisis menggunakan analisis deskriptif. Berdasarkan hasil penelitian diperoleh bahwa pada perairan sungai Bulango ditemukan 5 mikroalga epilitik, yaitu Oscillatoria sp, Melosira sp, Oedogonium sp, Navicula sp, dan Gonium sp.
Abubakar Sidik Katili, Ramli Utina
Jambura Edu Biosfer Journal, Volume 1; https://doi.org/10.34312/jebj.v1i1.2044

Abstract:
The aim of the study to determine the composition and abundance of Crustacea and Polychaeta based Mangrove stands in the village of Bulalo Kwandang District of North Gorontalo regency. The research conducted over four months. The method used is survey method and techniques of data collection was done by using a sample square. The data were analyzed by descriptive quantitative. The results showed that crustacea species which consists of 3 family, that is Portunidae, Sesarmidae, Ocypodidae, while the Polychaeta only one family that is Capitellidae family. At station 1 species which have the highest index of abundance that is Sesarma sp. Indv/m2 and 0.189 for species that have the lowest abundance index of 0.023 Indv/m2 Scylla serata. While at the station two species that have the highest abundance index Sesarma sp. of 0.188 Indv/m2 which has an index of abundance and low of Scylla serata the abundance index of 0.020 Indv/m2. The most abundance species found in the Rhizophora sp stands. Where species of the least discovered that the stand Avicenia sp.
İlyas Husain, Abubakar Sidik Katili, Elya Nusantari
Jambura Edu Biosfer Journal, Volume 1; https://doi.org/10.34312/jebj.v1i1.2043

Abstract:
Analysis of Mangrove Ecosystem Potential as Carbon Absorbent, For Development of Textbook Material On Ecology Course". Thesis of Graduate Program of State University of Gorontalo (UNG). The principal supervisor was. Prof. Dr. Ramli, Utina, M.Pd. and the co-supervisor was Dr. Elya Nusantari, M.Pd. This study aims To determine the quality of textbooks based on research for the development of teaching materials on the subject of ecology subject matter and energy. Development of research-based learning tools of subject matter and Energy using R & D model through 10 steps of development then simplified on three stages, namely (1) exploration stage, (2) prototype development stage, and (3) product validation stage, As for the products produced in this study is a textbook. The resulting product development is then validated by material experts, design experts, and students. The result of the research shows that (1) textbook based on research according to the material expert from the whole aspect of assessment for the validation of textbook is 93.75% including excellent quality, because it is in the range of 81% to 100%, (2) For the validation of textbook design is 91.67%, including excellent quality, because it is in the range of 81% to 100%, (3) student response to the overall quality of textbook aspect is at 94% percentage where this value belongs to very good category because it is In the range of 81 to 100%.
Jambura Edu Biosfer Journal, Volume 1; https://doi.org/10.34312/jebj.v1i1.2040

Abstract:
Penelitian ini mempunyai tujuan untuk mengidentifikasi gaya belajar mahasiswa. Pendekatan yang digunakan dalam penelitian ini adalah pendekatan kuantitatif dengan metode survey. Variabel dalam penelitian ini adalah variabel tunggal, yaitu identifikasi gaya belajar mahasiswa. Populasi penelitian adalah mahasiswa Program Studi Pendidikan Biologi Angkatan 2016 FKIP Universitas Sulawesi Barat yang berjumlah 116 orang. Sampel yang digunakan berjumlah 89 orang. Teknik pengambilan sampel dengan menggunakan Simple Random Sampling. Instrumen yang digunakan dalam penelitian ini adalah angket gaya belajar Gaya belajar yang diidentifikasi yaitu gaya belajar visual, gaya belajar auditorial, dan gaya belajar kinsetetik. Teknik analisis data dalam penelitian ini adalah dengan metode analisis statistik deskriptif. Berdasarkan hasil penelitian diketahui bahwa mahasiswa Program Studi Pendidikan Biologi FKIP Universitas Sulawesi Barat memiliki kecenderungan pada salah satu gaya belajar. Dari 89 mahasiswa diperoleh total skor 568 atau 70.91% untuk gaya belajar visual, 514 atau 64.17% untuk gaya belajar auditori dan 402 atau 50.19% untuk gaya belajar kinestetik.
Muhamad Iksan, Ramli Utina, Abubakar Sidik Katili
Jambura Edu Biosfer Journal, Volume 1; https://doi.org/10.34312/jebj.v1i1.2041

Abstract:
This study aimed to determine the community structure of soil Collembola found in Tangale Nature Preserve. The method used in this study is descriptive and quantitative data collection using the line transect is divided into two stations and each station there were 10 sampling plots, using a trap. Data were processed using the formula struktrur community dominance index (ID), Diversity Index (Hꞌ), abundance index (Jꞌ) and the Density Index (Di) . The results showed that the structure of soil Collembola communities in the Nature Preserve in the midle categories being Tangale. If viewed from the diversity index shows the number 1.377 and 1.374. To the dominance of family Entomobryidae sp. 1 with 0.015 Indv/m2 dominance index, family Entomobryidae sp. 2 with 0.013 Indv/m2 dominance index, family Entomobryidae sp. 3 with 0.07 Indv/m2 dominance index, and family Paronellidae 0.014 sp Indv/m2 dominance index. With an average of 0.253 Indv/m2. for the abundance, family Entomobryidae sp. 1 at 0.512 Indv/m2, and which has the lowest abundance value of the index family believe Entomobryidae sp. 3 of 0.458 Indv/m2. As for the value of the density of family Entomobryidae sp. 1 with a density of 0.0098 Indv/m2 index, family Entomobryidae sp. 2 with a density of 0.0098 Indv/m2 index, family Entomobryaidae sp. 3 with a density of 0.0012 Indv/m2 index, and family Paronellidae sp index Indv/m2 density of 0.0098. The results showed that the structure of soil Collembola communities in the Nature Preserve in the midle categories being Tangale.
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