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Jurnal Biologi Universitas Andalas
Published by Universitas Andalas
ISSN : -     EISSN : 23032162     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 237 Documents
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Jenis-Jenis Burung di Kawasan Cagar Alam Lembah Harau Sumatera Barat Gita Herliza Sari; - Dahelmi; Wilson Novarino
Jurnal Biologi Universitas Andalas Vol 1, No 2 (2012)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.1.2.%p.2012

Abstract

A study on bird species identification at Lembah Harau Nature Reserve, West Sumatra has been conducted from April to May 2012. This study aimed to record bird species by direct observation along road and it’s tributaries. We identified all species and put them into MacKinnon list to predict a total number of species existed in the area. This study found 50 birds species lived in the nature reserve those belong to 24 families and 9 orders. The most abundant was Passeriformes that consist of 36 species and 15 families.Keywords : avifauna, nature reserve, Harau Valley, West Sumatra
Jenis-Jenis Burung yang Memanfaatkan Eurya acuminata DC Di Kampus Universitas Andalas Limau Manis, Padang Dewi Chandrarini Surya; Wilson Novarino; Ardinis Arbain
Jurnal Biologi Universitas Andalas Vol 2, No 2 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.2.%p.2013

Abstract

An inventory of birds visiting Jirak (Eurya acuminata) at Limau Manis Padang was done from July to December 2011. The study used point sampling method to collect birds data and determine birds frequency that visited Jirak (Eurya acuminata). This study found 12 birds species, which belong to two orders, seven families and eight genera. Pycnonotus goiavier was the most frequent visitor. Eurya acuminata was more widely visited for foraging (71.47%), followed by perching (17.40%) and singing (11.13%). The birds mainly visited Eurya acuminata more often in the morning (54.16%) rather than afternoon (45.83%). The top of the canopy area was preferred (45.93%) rather than margin canopy (37.19%) and the center of the canopy (16.86%).Keywords : inventory of birds, Eurya acuminata, canopy
Perubahan Distribusi Populasi Dari Schismatoglottis lancifolia Hall. et Englar di Hutan Bukit Pinang-pinang - Khairinnisa; Erizal Mukhtar; - Chairul
Jurnal Biologi Universitas Andalas Vol 3, No 1 (2014)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.3.1.%p.2014

Abstract

An investigation on the changes of individual number and distribution pattern of Schismatoglottis lancifolia Hall. et Englar at permanent forest plots in Bukit Pinang-Pinang has been carried out from September 2012 to December 2012. The results showed that populations of Schismatoglottis lancifolia was 51.63% decreased when compared to the previous observations in 1985. The distribution pattern of the species was clumped (Morishita Index : 3.2) that was similar pattern reported in 1985. Distribution pattern was influenced by relative light intensity due to topography variations. Keywords: Bukit Pinang-pinang, distribution population, Schismatoglottis lancifolia.
Studi Morfometrik Paku Kawat (Lygodium) di Sumatera Barat Revi Novila Shinta; Ardinis Arbain; - Syamsuardi
Jurnal Biologi Universitas Andalas Vol 1, No 1 (2012)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.1.1.%p.2012

Abstract

Morphometrics study of climbing ferns (Lygodium) in West Sumatra had been conducted from December 2011 to April 2012. This study used survey method and direct observation. The result of this study indicated that four species were identified: Lygodium microphyllum, L. flexuosum, L. longifolium dan L. circinnatum has found in The Biological Education and Research Forest (HPPB), Silokek and Harau. The fertile leaflets of L. microphyllum are deltoid and sterile leaflets are elongatus. The fertile and sterile leaflets of L. flexuosum are elongatus. The number of L. microphyllum leaflets range from 9-12 and L. flexuosum range from 10-13. The fertile leaflets of L. longifolium are palmati-partitus with 1-2 lobed and sterile leaflets are palmatus with 3-4 lobed, then the fertile leaflets of L. circinnatum are palmati-partitus with 2 or 4 lobed and sterile leaflets are palmatus with 4-5 lobed.All of the spesies coulb be classified in to 2 clusters, there were high morphological similarities among spesies in each cluster.Keywords: Lygodium, climbing fern, morphometrics, West Sumatra
Analisis Vegetasi Gulma Pada Tanaman Buah Naga Merah (Hylocereus polyrhizus, L.) di Kecamatan Batang Anai, Kabupaten Padang Pariaman, Sumatera Barat Elsa Olivia Perdana; Zuhri Syam
Jurnal Biologi Universitas Andalas Vol 2, No 4 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.4.%p.2013

Abstract

Analysis of weed vegetation on red dragon fruit plants Hylocereus polyrhizus, L.on sandy soils and not gritty in the District Batang Anai, Padang Pariaman has conducted from March-April 2013 by using the of random squares method with the number 12 plot size1x1 m at each location. The results showed on sandy soils have been found 11 families, 20 genera, 21 species, and 822 individuals. Amaranthus lividus SDR has the highest value (25.80%), and the lowest value of SDR Galinsoga parviflora (0.90%), is the diversity index H'= 2.16 (moderate). While the sandy soil found in 6 families, 12 genera, 15 species and 1070 individuals. Eleusine indica the highest value of SDR (14.1%), and the lowest value of SDR Ageratum conyzoides, diversity index H'= 2.25 (moderate). Index of similarity of 38.88% (significantly different). Keywords: Weeds, Hylocereus polyrhizus. L, composition, structure
Pengaruh Pengaturan Keasaman Media Serbuk Gergaji Terhadap Pertumbuhan dan Produksi Jamur Tiram Cokelat (Pleurotus cystidiosus O.K. Miller.) Ramza Seswati; - Nurmiati; - Periadnadi
Jurnal Biologi Universitas Andalas Vol 2, No 1 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.1.%p.2013

Abstract

A study on the effects of sawdust acidity on the growth and production of brown oyster mushroom (Pleurotus cystidiosus O.K. Miller) was conducted from May to August 2012 in the Laboratory of Microbiology, Department of Biology, Faculty of Sciences, Andalas University, Padang. The purpose of this study was to determine the effects of acidity (pH) of sawdust media to the growth and production of the mushrooms. This study used experimental method by Completely Randomized Design (CRD) with five pH level of treatments from 4 to 8 and five replication for each pH. The results of the study showed that pH 8 gave the best growth with vegetative growth periods was 21 days, weight of the fruiting bodies was 32,60 g, and diameter of the fruiting bodies was 7,06 cm.Keywords : acidity, growth and production, Pleurotus cystidiosus, sawdust.
Struktur Anatomi Kayu Beberapa Jenis Buah-Buahan Yulia Sandri; Tesri Maideliza; - Syamsuardi
Jurnal Biologi Universitas Andalas Vol 2, No 3 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.3.%p.2013

Abstract

The aim of this study was to describe the anatomical structure and quality of wood from fruit plants. This study was conducted from December 2012 to February 2013. The woods of five fruits species in Padang namely Artocarpus integra (cempedak), Baccaurea motleyana (rambai), Mangifera caesia (binjai), Mangifera foetida (ambacang), and Mangifera odorata (kuweni) were analyzed. The character of vessels, parenchyma, and rays were analyzed by using permanent slide, and fibre dimension by maceration method. The results showed that all of woods in this study have the same type of porous namely difuse and soliter type. The smallest porous was detected at wood of B. motleyana among those species. The parenchyma and rays characters of A. integra and B. motleyana have apotracheal and uniseriate types while M. caesia, M. foetida, and M. odorata have paratracheal and multiseriate types. Wood of B. motleyana has the longest fibre, differed from woods of M. caesia and M. odorata with short fibres. Based on industrial woods that A. integra and B. motleyana were classified in II-III of strength, differed from woods of M. caesia, M. foetida and M. odorata were classified in III-IV of strength.Keywords : anatomical structure, permanent slide, fruits wood, wood quality.
Penapisan dan Karakterisasi Bakteri Amilo-Termofilik dari Sumber Air Panas Semurup, Kerinci, Jambi Wira Hastuti; Anthoni Agustien; - Nurmiati
Jurnal Biologi Universitas Andalas Vol 1, No 2 (2012)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.1.2.%p.2012

Abstract

The screening and characterization of amylo-thermophylic bacteria that produced amylase from Semurup hot spring in Kerinci, Jambi was conducted from May to July 2012. The aim of this study was to find out the isolate of amylo-thermophylic bacteria and to analyze amylase activities. This study used experimental methods. This study found 31 isolates of amylo-thermophylic bacteria with the amylolytic index more than 2. The isolate SII- 1.7 has the highest enzyme activity. The form of colony was circular margin, smooth shiny surface and pigmentation cream. The bacterium was gram negative, bacilli cell, positive catalase, non-motile, and has proteolytic and amylolytic activities.Keywords: amylolytic, bacterium, characterization, hot spring, thermophylic
Jenis-Jenis Jamur pada Pembusukan Buah Kakao (Theobroma cacao, L.) di Sumatera Barat Yenita Afriyeni; Nasril Nasir; - Jumjunidang
Jurnal Biologi Universitas Andalas Vol 2, No 2 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.2.%p.2013

Abstract

Currently, cacao (Theobroma cacao, L.) farm is being developed in West Sumatra as one of the most potential estate crops. Less than 10 years, the crop had been developed up to 110,000 ha whereas it was only 25,000 ha in 2005. However there is none of the crops free from disease of immature fruit decay. The aim of this study was to identify the fungus which were collected on decay fruits of cocoa. Samples were collected from lowland and highland farms in West Sumatera by purposive sampling method. Fungus found on the decay fruit of cocoa in the lowland were Phytophthora palmivora, Fusarium sp and Aspergillus niger, while in highland were P. palmivora, Fusarium sp and Gloeosporium.Keywords: cacao, fungus identification, decay fruit.
Pertumbuhan Kunyit Putih (Curcuma zedoaria Rosc.) yang Diinokulasi Fungi Mikoriza Arbuskula Hasil Isolasi Dari RizosfirHornstedtia scyphifera Steud. Marta Linda; Zozy Aneloi Noli; M. Idris
Jurnal Biologi Universitas Andalas Vol 3, No 1 (2014)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.3.1.%p.2014

Abstract

A study on growth of turmeric (Curcuma zedoaria Rosc.) inoculated with Arbuscular Mycorrhizzal Fungi (AMF) isolated from the rhizosphere of Situngkek (Hornstedtia scyphifera Steud.) was done from March to August 2013 in the wire house and in Plant Physiology Laboratory, Department of Biology, Faculty of Natural Sciences, Andalas University. The aim of this study was to determine the growth of white turmeric inoculated with several doses of AMF. The experiment used Completely Randomized Design (CRD) with five treatments, control (A) and four replications. The inoculation doses were 10 g / Plant AMF (B), 20 g / plant AMF (C), 30 g / Plant AMF (D), 40 g / Plant AMF (E), 50 g / Plant AMF (F). The results showed that AMF inoculation gave no significant effect on plant height, number of leaf, leaf width and dry weight of turmeric. The highest root infection was 30 gr/plant (74.83 %). Generally, turmeric plant have a dependency on FMA inoculation with less and sufficient criteria of Habte and Manjunath. Keyword: Curcuma zedoaria, Mycorrhizal, Growth.

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