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Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal
Published by Universitas Jenderal Soedirman
ISSN : 08531629     EISSN : 08531629     DOI : -
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science
Majalah Ilmiah Biologi Biosfera : A Scientific Journal merupakan peer reviewed jurnal yang diterbitkan oleh Fakultas Biologi Universitas Jenderal Soedirman. Media ini mewadahi hasil-hasil penelitian di bidang biologi tropika yang terbit tiga kali setahun (Januari, Mei, September).
Arjuna Subject : -
Articles 7 Documents
 1 
Search results for , issue "Vol 27, No 3 (2010)" : 7 Documents clear
Pemetaan Distribusi dan Densitas Monyet Hitam Sulawesi (Macaca Nigra) di Sulawesi Utara Saroyo Saroyo; Roni Koneri
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 27, No 3 (2010)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2010.27.3.203

Abstract

A study on mapping of distribution and population of Sulawesi crested black macaques (Macaca nigra) has been carried out to evaluate the current condition of distribution and density. This research was conducted from January to November 2009 at 24 locations in North Sulawesi Province. Determination of  M. nigra distribution was based on the information provided by people surrounding the sites and field observation. Line transect was used to evaluate the density of the monkey with the length based on the habitat condition and the width was 100 m. The results showed that monkeys were not found at all of the locations and based on categories, high density of monkey was only found at Tangkoko-Batuangus Nature Reserve  Two serious problems responsible to monkey population decreasing were hunting for consumption and habitat destruction. It can be concluded that distribution of M. nigra in North Sulawesi is meta-population and the current status of the species as critically endangered is accepted; the conservation of this species depends on the active management and terminating the factors of population decreasing.
Agronomic Improvement of Argomulyo Soybean Variety [Glycine max (l) merr] through Induced Mutation by Gamma Irradiation in M1 and M2 Generation Diana Sofia Hanafiah; Trikoesoemaningtyas Trikoesoemaningtyas; Sudirman Yahya; Desta Wirnas
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 27, No 3 (2010)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2010.27.3.199

Abstract

Gamma ray irradiation, especially applied at low doses, is one of methods to produce plant genetic diversity by means of micromutation. The objectives of this research was to determine the radiosensitivity of Argomulyo variety of soybeans (Glycine max (L) Merr) by gamma ray irradiation and to estimate genetic variablity of the crop after  irradiation. To determine the radiosensitivy, the seeds of Argomulyo variety were treated with gamma ray irradiation at  200 Gy, 400 Gy, 600 Gy, 800 Gy, and 1000 Gy. Curve-fit analysis was employed to find the Lethal Doses 50 (LD50) value . To evaluate the genetic variablity after irradiation with gamma ray, seeds of Argomulyo was irradiated under LD50  at doses of 0 Gy, 50 Gy, 100 Gy, 150 Gy, and 200 Gy.  The results showed that LD50 value was 457.17 Gy. The study found that for Argomulyo variety the LD20 was 490.93 Gy and the LD50 was 457.17 Gy.  Genetic variability was observed in various agronomic characters of M2 generation after low dose of gamma ray irradiation treatment of 50, 100, 150 and 200 Gy. The highest genetic variability was found at 200 Gy for plant height, number of productive nodes, and number of pods.  The variability of agronomic characters of soybean after irradiation was due to genetic factors. The highest heritability estimates was observed in plant height and number of productive pods. The succeding generation of putative mutants will be selected for productivity and drought tolerance.
The Diversity of Plankton in Sangihe – Sangir Talaud Islands, Sulawesi, Indonesia Hikmah Thoha; Nurul Fitriya
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 27, No 3 (2010)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2010.27.3.200

Abstract

The research of Oceanographical Expedition was conducted on May 2009. Research Vessel of Baruna Jaya VIII was used to accommodate the research team, which is a part of the EWIN ( Widya Nusantara Expedition) project with a topic of discovering the ultimate frontier of Indonesia and strengthening our national resilience, such as survival, energy, and natural resources, food, disaster, and health. This paper shows  plankton research with environment studies, such as temperature and salinity.  Plankton was sampled using Kitahara Net with mesh size of 80 µm for phytoplankton and Norpac Plankton Net with mesh size of 300 µm for zooplankton. The sample was poured into a bottle with formalin of 4% as preservative from 13 stations. The results showed that the phytoplanktons consist of 22 diatom genera and 10 dinoflagellates. The phytoplankton abundance was due the flourishing of Chaetoceros sp., Rhizosolenia sp., Nitzschia sp., and Thalassiothrix sp.   Ceratium sp. and Protoperidinium sp., Pyrocystis sp., and Cyanobacteria Trichodesmium sp. were common among the dinoflagellates. The zooplanktons consist of 30 taxa, the group of which are mostly composed of Copepoda, Calanoida, Cyclopoida, Oikopleura, and Chaetognata. Environmental  studies were also discussed.    
Optimasi Starter dalam Memproduksi Inulinase dan Identifikasi Khamir Inulinolitik BAN - 1 dari Umbi Dahlia (Dahlia variabilis Willd) Wijanarka Wijanarka; Endang Kusdiyantini; Hermin Hermin
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 27, No 3 (2010)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2010.27.3.205

Abstract

Inulinolitic yeast isolated from dahlia tuber (Dahlia variabilis Willd) of Bandungan-Ambarawa, was found to produce inulinase enzyme (E.C.3.2.1.7).  Under tested fermentation condition, BAN-1 inulinase isolate showed enzymatic activity in dose dependent manner to the starter concentration. A maximum enzymatic activity of 0.582 IU was produced by adding starter concentration 10%. Based on morphological, physiological and biochamichal evaluation it was indentified that  the BAN-1 isolate is Pichia sp.
Studi Awal Komunitas Ordo Anura di Kawasan Ekowisata Sawangan, Magelang, Jawa Tengah Tony Febri Qurniawan; Hestin Ambar Asti; Rury Eprilurahman
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 27, No 3 (2010)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2010.27.3.201

Abstract

Frogs and toads (Amphibia: Anura) were very sensitive to environmental changes. Due to their sensitivity, usually they can be used as indicator for environmental changes. On the other hands, there has been only limited data on the diversity and distribution of frogs and toads in Java. This could lead to the reducing population of frogs and toads in Java. Based on those facts, this research was aimed to collect data on species diversity, species richness, species composition and species distribution of frogs and toad from Sawangan Ecotourism, Magelang, Central Java Province. This study was expected to complete the database of anurans in Central Java. The research was conducted from June to July 2009, mostly at night. The VES (Visual Encounter Survey) method combined with 200 m transects were used for sampling. Seven species of anurans were recorded during the survey. They were Duttaphrynus melanostictus, Limnonectes kuhlii, Limnonectes microdiscus, Microhyla achatina, Odorrana hosii, Hylarana chalconotus and Huia masonii. From those seven species, only three (Huia masonii, Microhyla achatina and Limnonectes kuhlii) were known as endemic of Java. 
Isolasi dan Identifikasi Kapang Saprofitik pada Sampel Tanah di Sekitar Kawasan Gunung Gamalama, Ternate Muhammad Ilyas
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 27, No 3 (2010)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2010.27.3.204

Abstract

Microorganisms, such as mould and bacteria, have important roles in organic matter decomposition; and this process is fundamental to maintain soil structure and fertility. Moulds have hypha with filament structures that can penetrate to the substrates. Their enzymatic capability is higher than that of bacteria, especially in decomposing organic compounds like lignin and cellulose. The objective of the study was to isolate and identify saprophytic mould inhabiting soil of Mount Gamalama, Ternate, North Moluccas. The mould isolation was based on sample dillution method with Rose Bengal Cloramphenicol Agar isolation media. The abundance of saprophytic mould counted by measuring the average Colony Forming Unit (CFU)/ml of all mould colonies which grown on isolated media by Total Plate Count (TPC) method. The diversity of isolated mould was identified based on phenotypic characters by observing both macroscopic and microscopic morphology. The result showed that the average of mould colonies were between 13,30 x104 and 78,15 x104 CFU/ml. Identification based on morphology from selected mould isolates showed that 25 fungal taxa and two groups of unidentified fungal isolates were identified.
Biosorpsi Kadmium pada Leacheate TPA Gunung Tugel Menggunakan Biomassa Sargassum cinereum Slamet Santoso; Sri Lestari; Dwi Sunu Windyartini
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 27, No 3 (2010)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2010.27.3.202

Abstract

Leachate is liquid originated from organic waste. The substance consists of dissolved and suspended materials as a result of decomposition process by microorganisms. Leachate is waste consist of organic and high heavy metal. To manage leachate, heavy metal should be reduced by biosorption. Biosorption is heavy metal adsorbtion by inactive or death organism. The aims of the research were to examine the contact time, Sargassum cinereum biomass, combination of contact time and S. cinereum biomass to adsorb cadmium from the leachate. The experiments were based on Completely Randomized Design (CRD) with Spilt Plot Design. The treatments included contact time of Sargassum cinereum with leachate as main plot and S. cinereum biomass as sub plot. Contact time of S. cinereum with leachate consisted of three levels i.e., 1, 2 and 3 hours while S. cinereum biomass consisted of four levels, i.e., 200, 300, 400 and 500 mg. Data obtained were analyzed by analysis of variance (ANOVA) and followed by High Significant Difference (HSD) test. The results showed that S. cinereum biomass can adsorp cadmium from leachate. The level of adsorption of heavy metal was different in each treatment depending on contact time and S. cinereum biomass. The contact time of 3 hours was the optimum length in adsorping cadmium (39.168%) and 400 mg S. cinereum biomass was optimum amount in adsorping cadmium (38.936%). Combination of contact time 3 hours and 400 mg S. cinereum biomass was optimum treatment in adsorping cadmium (42.289%) from the leachate. 

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