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All Journal Jurnal Pendidikan MIPA Jurnal Biologi Tropis
Ilyas H. Husain
Universitas Negeri Gorontalo
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Mathematics Social Sciences Other

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 1 
Potential of Siam Weed (Crhomolaena Odorata) as Fertilizer and Liquid Pesticide and Its Applications to Increase Crop Production Jusna Ahmad; Chairunnsah J. Lamangantjo; Wirnangsi D. Uno; Ilyas H. Husain
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3108

Abstract

Siam weed (Chromolaena odorata) which can be used as fertilizer and vegetable pesticide in liquid form. Siamese weeds are very abundant and we can find them in almost all areas of uncultivated garden land. The purpose of this study was to determine the ability of Siamese weed (C. odorata) as fertilizer and pesticide in liquid form on the growth of horticultural crops. The type of research is experimental as well as quantitative exploratory. Analysis used a randomized block design (RAK), with four treatments and six replications, namely: Treatment K (without Siamese weed fertilizer and pesticide), treatment A (Liquid organic fertilizer for Siamese weeds 20%), treatment B (liquid organic fertilizer for weeds). siam 30 %), and treatment C (liquid organic fertilizer of weedsiam 40%), treatment D (liquid organic fertilizer of weed siam 50%), and treatment E (liquid organic fertilizer of weedsiam 60%), the results obtained were the concentration of liquid organic fertilizer (POC) Siamese weed leaves with a concentration of 60% (treatment E) had a significant effect on the growth of purple eggplant and shallot plants.
The Carbon Absorption Value of Bruguiera gymnorrhiza in the Coastal Area of Dulupi Village, Boalemo District Ilyas H. Husain; Abubakar Sidik Katili
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i1.4410

Abstract

Carbon dioxide (CO2) levels in nature are increasing along with the development of human civilization. Mangrove forests can absorb and store carbon in large quantities and a long time so that it can become a strategy in mitigating climate change. This study aims to determine the Carbon Absorption Value of Above Surface Bruguiera gymnorrhiza in the Dulupi Coastal Mangrove Area, Boalemo Regency. This research is a quantitative descriptive study by measuring the density of Bruguiera gymnorrhiza mangrove vegetation using the distance method (Point-Centered-Quarter-Method). The density value of the mangrove species Bruguiera gymnorrhiza found in the coastal area of ​​Dulupi Village, Boalemo Regency is 12.49 trees/ha with an average distance of 11,231 m/tree. The calculation results of the total stem biomass value obtained from the sum of each individual Bruguiera gymnorrhiza mangrove biomass obtained a value of 12,251.37 Kg. The carbon absorption content in the leaves of the mangrove species Bruguiera gymnorrhiza in the coastal area of ​​Dulupi Village, Boalemo Regency, from all sample trees was 449.26 kg C/cm2 with an average carbon content of each sample tree's leaves of 17.97 kg C/cm2. So that the total carbon absorption potential of the stems and leaves of the Brugueira gymnorrizha mangrove species is 12,700.63 kg C/cm2.
Community Structure and Ecological Conditions of Sea Cucumbers (Holothuroidea) in The Coastal Village of Pasokan, Walea Besar District, Central Sulawesi Ilyas H. Husain; Chairunnisah J. Lamangantjo
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i3.5216

Abstract

Sea cucumber communities in the wild have different population sizes because there is a high species interaction within the community. Based on the biological organization that is used to express community structure, species diversity is unique to the community level. The objective is to ascertain the structure of sea cucumber communities along the coast of Pasok Village in the Walea Besar District of Central Sulawesi. Data are collected using transect lines, which are divided into three observation stations with ten sampling plots at each. The research method is descriptive-quantitative. The community structure can be known from the domination index (ID), diversity index (H'), and abundance index (J) used to process the data. The results of the study found the diversity index showed the numbers 1.092, 1.056 and 1.089. The dominance of Holothuria scraba species was 0.2 Indv/m2, Holothuria atra 0.14 Indv/m2, and Bohadscia marmorata 0.08 Indv/m2. The highest abundance value belonged to the species Holothuria atra 0.377 Indv/m2 and the lowest to Bohadscia marmorata 0.305 indv/m2. The results showed that the structure of the Holothuroidea community in Pasokan Pantai Village, Walea Besar District, Central Sulawesi, was in the present category.
Biodiversity of Migrant Birds in the Limboto Lake Region, Gorontalo Province Mustamin Ibrahim; Ilyas H. Husain; Tutin Pratiwi Langaru
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i3.5246

Abstract

The bird population in Indonesia is rich in diversity, this is based on the number of bird populations and environmental conditions that are still maintained so as to allow the birds to live. This study aims to describe the types of migratory birds in Lake Limboto. The method used in this study is the count point method and with 4 observation points for 7 days on different days. The starting point of the observations is carried out alternately for each station so that there are variations in the observation time at each station. Overall, the classification of migratory birds in the Limboto Lake area is classified as moderate with an index carbon index value of 1.79. Migratory birds found in the Lake Limboto area are 9 species of migratory birds belonging to 7 families with a total of 706 individuals. The highest index value H'= 1.63 is at station 1, the diversity index value is moderate and the lowest hidden index H'= 0 is at station 4, the index value is relatively low.
Biodiversity Literacy Skills in Problem-Based Science Lectures A Grounded Theory Research Zohra Waty Hiola; Abubakar Sidik Katili; Ilyas H. Husain
Jurnal Pendidikan MIPA Vol 24, No 1 (2023): Jurnal Pendidikan MIPA
Publisher : University of Lampung

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Abstract

Abstract The aims of this study to describe the students biodiversity literacy skills in natural science lectures. The data research from the observation and the test scores. Biodiversity literacy skills indicators were established. Analysis of data using qualitative descriptive methods. The results showed the biodiversity literacy skills are within medium, high and very high criteria. Based on indicators of biodiversity literacy skills, it is in the criteria of being able to define biodiversity and its use, being able to distinguish biodiversity at the gene, species, ecosystem level, and being able to construct solutions to biodiversity problems. This biodiversity literacy skill can encourage the character of concern for biodiversity decline so that students are able to come up with solutions to existing biodiversity problems. Keywords biodiversity literacy skills, science lectures, grounded theory approach. Abstrak Penelitian bertujuan mendeskripsikan keterampilan literasi keanekaragaman hayati mahasiswa pada perkuliahan IPA yang menerapkan model Problem Based Learning. Data penelitian diperoleh melalui observasi dan nilai tes. Ditetapkan enam indikator keterampilan literasi keanekaragaman hayati. Analisis data menggunakan metode deskriptif kualitatif. Diperoleh hasil bahwa nilai tes keterampilan literasi keanekaragaman hayati berada dalam kriteria sedang, tinggi dan sangat tinggi. Berdasarkan indikator keterampilan literasi keanekaragaman hayati, berada pada kriteria mampu mendefinisikan keanekaragaman hayati dan pemanfaatannya, mampu membedakan keanekaragaman hayati pada tingkat gen, spesies, ekosistem, dan mampu mengkonstruksi solusi permasalahan keanekaragaman hayati. Keterampilan literasi keanekaragaman hayati inidapat mendorong karakter kepedulian terhadap penurunan keanekaragaman hayati sehingga mahasiswa mampu mengemukakan solusi atas permasalahan keanekaragaman hayati yang ada.   Kata kunci keterampilan literasi biodiversitas, perkuliahan IPA, pendekatan grounded theory.DOI: http://dx.doi.org/10.23960/jpmipa/v24i1.pp50-58
Co-Authors Abubakar Sidik Katili Chairunnisah J. Lamangantjo Chairunnsah J. Lamangantjo Jusna Ahmad Mustamin Ibrahim Tutin Pratiwi Langaru Wirnangsi D. Uno Zohra Waty Hiola