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All Journal Bioscience Jurnal Biologi Universitas Andalas EnviroScienteae Jurnal Biologi Tropis Sains Natural: Journal of Biology and Chemistry Jurnal Biosense Bioscientist : Jurnal Ilmiah Biologi
Chairul
Biology Department, Mathematics And Natural Science Faculty, Universitas Andalas, Jl. Universitas Andalas, Padang, 25163, Indonesia.
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Environmental Science Immunology & microbiology Medicine & Pharmacology Public Health Social Sciences

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POTENSI TUMBUHAN PIONIR UNTUK WOOD PELLET SEBAGAI BIOENERGI TERBARUKAN Nurfitri Kartikasari; Chairul Chairul
EnviroScienteae Vol 18, No 2 (2022): ENVIROSCIENTEAE VOLUME 18 NOMOR 2, AGUSTUS 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/es.v18i2.14234

Abstract

The increasing demand for energy in Indonesia is due to the need or the number of Indonesian population which has increased and is inversely proportional to the availability and production of existing energy. One of the best solutions that can be done is to promote the use of pioneer wood (fast growing plant) as an energy source by processing wood into wood pellets. The method used is a survey method by looking for a place to grow several types of pioneer plants. The purpose of this study was to determine the quality of wood pellets and the potential of several types of pioneer plants tested as environmentally friendly, sustainable renewable bioenergy. The pioneers tested were Acacia mangium, Jatropha curcas, Macaranga tanarius, Swietenia mahagoni, Leucaena leucocephala, and Sesbania grandiflora. The quality of Wood Pellets from pioneer plants is seen from the density ranging from 0.433 gr / cm3 to 0.503 gr / cm3, moisture content of 5.55% - 12.4%, ash content of 1.95-6.2%, and the calorific value of powder from 3657.67% - 4178.18%. Of the several types of pioneer plants tested, the most potential was Leucaena leucocephala because it had met SNI 8021 - 2014 and had the highest calorific value as required.
Analisis Vegetasi Tegakan Pohon Di Kawasan Hutan Kota Bukit Langkisau Painan, Pesisir Selatan Chairul Chairul; lola sutra islami arwin
Jurnal Biologi Universitas Andalas Vol 11, No 1 (2023)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.11.1.1-6.2023

Abstract

Urban forest management must adapt to urban development and aspects of urban life so that the availability and management of key lands in the development of urban forests and the presence of vegetation as the driving element, one of which is trees. This study aims to determine the composition and structure of tree stands in the Bukit Langkisau Painan City Forest, Pesisir Selatan. The method used was purposive sampling with a plot size of 20 m x 60 m with a sub plot of 10 x 10 m for level 12 plots of trees each. It was found that the vegetation composition of tree stands were 10 families, 12 genera, 13 species, and 27 individuals with the dominant family Myrtaceae and the co-dominant families Meliaceae, and sapindaceae. The highest significance value was found in Syzygium racemosum with a value of 43.399 % and the lowest significance index was found in the species Xerospermum noronhianum with 9.298 %. The diversity index (H') is 2,439 which indicates that species diversity classified to moderate. Keyword: bukit langkisau, composition, structure, urban fores.
Komposisi dan Struktur Strata Sapling di Kawasan Geopark Silokek Kabupaten Sijunjung Savira Geovana; Chairul Chairul
Bioscientist : Jurnal Ilmiah Biologi Vol 11, No 1 (2023): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v11i1.7628

Abstract

This study aims to determine the composition and structure of the sapling strata of plants in the Silokek Geopark Area, Sijunjung Regency. Vegetation analysis was carried out using the transect method with a plot size of 5 x 5 m. 10 plots were made and the identification of unknown plant species was carried out at the Andalas University Herbarium. Based on the research results found 31 species consisting of 48 individuals with 14 families. The co-dominant families are Euphorbiaceae, Annonaceae, Leguminosae, and Sapindaceae. The highest important value index is Archidendron bubalinum. The diversity index of the sapling strata vegetation in this area is high (H' = 3.28). Based on the research, it can be concluded that the Euphorbiaceae, Annonaceae, Leguminosae, and Sapindaceae families support the composition and structure of the vegetation in the area.
Analisis Vegetasi Tumbuhan Bawah di Kawasan Geopark Silokek Kabupaten Sijunjung Kamelia Putri M. Nur; Chairul Chairul
Bioscientist : Jurnal Ilmiah Biologi Vol 11, No 1 (2023): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v11i1.7631

Abstract

Research on the analysis of undergrowth vegetation in the Silokek Geopark Area, Sijunjung Regency. This study aims to determine the composition and structure of the undergrowth in the Silokek Geopark Area, Sijunjung Regency. Vegetation analysis was carried out by using the transect method and purposive sampling by placing plots on the right and left of the transect, with a plot size of 2x2 m. There are 10 plots were created and species identification was carried out at the Andalas University Herbarium. Based on the results of the study, 12 families, 15 genera, 15 species, and 103 individuals were found with the dominant family being Poaceae and the co-dominant families Asteraceae, Schizaeceae, and Selaginellaceae. The highest important value index of Lygodium circinnatum is 30.79%. Understorey diversity index of 2.57. Based on the research, it can be concluded that the Poaceae family is able to reproduce well in this location and the diversity of understoreys is classified as moderate. It is recommended that local governments and local communities protect the biodiversity in this area.
Komposisi dan Struktur Tumbuhan Bawah pada Habitat yang Diinvasi Tumbuhan Invasif di Kawasan Wisata Geopark Silokek Kabupaten Sijunjung Solfiyeni Solfiyeni; Anita Mayang Sari; Chairul Chairul; Erizal Mukhtar
Bioscientist : Jurnal Ilmiah Biologi Vol 11, No 1 (2023): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v11i1.7709

Abstract

The Silokek Geopark area, Sijunjung Regency, is one of the tourist areas in West Sumatra Province which has a high level of biodiversity, which can be disrupted due to the presence of invasive plants. A study has been carried out which aims to determine the composition and structure of undergrowth in habitats invaded by weeds in the Silokek Geopark tourist area, Sijunjung Regency. This research was conducted from September to December 2022 using the quadratic method and plotting by purposive sampling with a plot size of 10 x 10 m with a sub-plot measuring 2 x 2 m. The composition of undergrowth in the habitat invaded by weeds found 24 families, 38 genera, 38 species, and 1049 individuals. Among the undergrowth found, there were 12 families, 20 genera, 20 species and 532 individuals of invasive plants with the dominant family being Asteraceae (30.41%), and the co-dominant family being Nephrolepidaceae and Poaceae with a percentage of 17 each. .83% and 11.63%. The highest important value index was in Nephrolepis biserrata (28.42%) and the lowest was in Musa acuminata (0.76%). The most dominant weed species was Mikania michranta with an IVI of 18.79%. The diversity index of the understorey plants in this area is categorized as high with a diversity index (H' = 3.24). Weed plant species are more successful in dominating open and disturbed areas with high levels of light intensity, gaps or wide gaps and forest edges can be utilized by invasive plant species to grow optimally.
The Extract of Bellucia pentamera Naudin Leaves as Bioherbicide of The Chromolaena odorata (L.) R.M.King & H.Rob. Germination and Growth Lidia Gusvita Nasra; Solfiyeni; Chairul
JURNAL SAINS NATURAL Vol. 13 No. 4 (2023): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v13i4.449

Abstract

Threats that can cause loss of biodiversity include the presence of invasive foreign plants. One of these invasive plants is from the Melastomataceae family with the species Bellucia pentamera Naudin, and this species can trigger a decline in ecosystem diversity. B. pentamera contains a chemical compound that can be used as an herbicide, phenolic, and flavonoid compounds, which can retard the growth of other plants that surround them like noxious weeds. Bioherbicides need to be used as an environmentally friendly alternative drug control method to overcome and reduce their adverse effects. This research was carried out to determine the impact and concentration of administering B. pentamera leaf extract on the germination and growth of Chromolaena odorata. The study used experimental methods with a completely randomized design (CRD) with six variations consisting of treatment of 0, 10, 15, 20, 25, and 30% with a four-time repetition. The research results showed the effect of giving greater concentrations of B. pentamera leaf extract, causing the germination and growth of C. odorata to be increasingly hampered. Providing extracts with concentrations of 20% and 25% are effective for inhibiting the germination and growth of C. odorata.
Application of Portulaca oleracea L. Extract as a Biostimulant with Several Types of Solvents on The Growth of Kale (Brassica oleracea var. achepala) Cleopatra; Zozy Aneloi Noli; M. Idris; Chairul; Suwirmen; Solfiyeni
Jurnal Biologi Tropis Vol. 23 No. 4 (2023): October - December
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.v23i4.5711

Abstract

Plant extracts are one biostimulant sources that have the potential to increase plant growth and yield. Portulaca contains secondary metabolites, macro and micronutrients, and amino acids, which have the potential as biostimulants. The research aims to determine the best type of solvent in the Portulaca extraction process as a biostimulant. The method used in this study was a Completely Randomized Design (CRD) with three treatments (aquadest, ethanol, and methanol) and nine replicates. The application of Portulaca extract extracted with several solvents significantly affected root length parameters of kale, with the most extended the root length of 15.80 cm. However, it did not have a significantly different effect on other parameters. Based on the proximate analysis, Portulaca extract extracted with ethanol solvent produces a protein content of 25.26%.
Preliminari Eksperimen dalam Penginduksian Akar Stek Tumbuhan Tetrastigma papillosum Inang Rhizanthes deceptor Chairul Chairul; Rizka Sefmaliza; M. Idris
Bioscientist : Jurnal Ilmiah Biologi Vol 11, No 2 (2023): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v11i2.9045

Abstract

Tetrastigma is a genus in the Vitaceae family which is characterized by the presence of tendrils. This plant has a liana habit, which requires tall plants as support in its life. Induction of host roots, Tetrastigma papillosum, in this study, used Naphthalene Acetic Acid (NAA), which is a class of auxin that functions to induce cell expansion and initiation of rooting. This research was conducted using a Completely Randomized Design (CRD) with 5 treatments and 5 replications. Several NAA concentrations as treatments consist of A (0 ppm), B (2.5 ppm), C (5 ppm), D (7.5 ppm), and E (10 ppm). Root induction of Tetrastigma papillosum can be initiated with NAA at small concentrations because endogenous auxin induces roots more quickly.
Analisis Vegetasi Tumbuhan Tingkat Pohon di Kawasan Geopark Silokek Kabupaten Sijunjung Vera Pertiwi; Chairul Chairul
Bioscientist : Jurnal Ilmiah Biologi Vol 12, No 1 (2024): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i1.9231

Abstract

Silokek Geopark Area is a geopark area that is being appointed into a national geopark consisting of 25 geodiversity, 12 biodiversity, and 17 cultural diversity sites. The objective of the study is to determine the composition and structure of vegetation of trees in the Silokek Geopark area, Sijunjung Regency. This research has been conducted from September to December 2022 by using the transect method. The plot was made of 10 plots with a size of 10x10 meters for vegetation that is placed alternately on both sides of the transect. Identification is carried out at the Andalas University Herbarium. Based on the research results, 15 families, 19 genera, 22 species, and 30 individuals were found. The co-dominant families are Moraceae (20%), Ebenaceae (16.67%), and Euphorbiaceae (13.33%). The highest important value index of Ficus Stricta was obtained at 57.86% and the lowest in the Nephelium Lappaceum at 7.36%. The plant diversity index in this area is classified as moderate (H '= 2.85). It is recommended that the government to controlling the diversity of plants in the Silokek Geopark area, considering that this area is a tourist area.
Kekayaan Jenis Tumbuhan Berbunga pada Area Geopark Silokek, Sijunjung, Sumatera Barat. Nurainas Nurainas; Thoriq Alfath Febriamansyah; Witri Zulaspita; Firham Yasra; Tesri Maideliza; Chairul Chairul; Syamsuardi Syamsuardi
Jurnal Biologi Universitas Andalas Vol 12, No 1 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.12.1.47-57.2024

Abstract

Penelitian ini menginformasikan keanekaragaman hayati tumbuhan berbunga di Geopark Silokek, Sumatera Barat, sebuah kawasan karst yang unik. Survei lapangan dengan cara jelajah dilakukan untuk menginventarisasi spesies tumbuhan berbunga dan mengevaluasi status kelangkaan dan konservasi serta kekhasan ekologis mereka. Hasilnya menunjukkan keberadaan 164 spesies tumbuhan berbunga dalam 121 genus dan 55 famili. Famili Moraceae dan Gesneriaceae merupakan famili dengan jenis terbanyak. Enam spesies diantaranya termasuk penting dari segi taksonomi dan konservasi, dengan status rentan terhadap kepunahan dan juga endemik di Sumatera antara lain Quercus oidocarpa, Vanda sumatrana dan Zingiber macradenium. Selain itu, tujuh jenis lain merupakan tumbuhan indikator kawasan karst antara lain Impatiens tribuana, Paraboea treubii dan Monophyllaea horsfeldii.
Co-Authors - Solviana - Solviana Ade Adriadi Anita Mayang Sari Aulia Azhar Cleopatra Daimon Syukri Dwi Nofa Rina Erizal Mukhtar Firda Az zahra Firham Yasra Indah Asmayannur Indra Junaidi Zakaria Kamelia Putri M. Nur Lidia Gusvita Nasra Lily Rahmawati Linda Agustin lola sutra islami arwin M. Idris Martha Aulia Reyndi Nurainas Nurainas Nurfitri Kartikasari Ririn Fatma Nanda Rizka Sefmaliza Rizky Paramita Mukhti Savira Geovana Solfiyeni Solfiyeni Suwirmen, Suwirmen Syamsuardi Syamsuardi Tesri Maideliza Thoriq Alfath Febriamansyah Vera Pertiwi Witri Zulaspita Yuwindah Gustanti Zozy Aneloi Noli Zuhri Syam