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Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal
ISSN : 08531629     EISSN : 08531629     DOI : -
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).
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Articles 7 Documents
Search results for , issue " Vol 26, No 1 (2009)" : 7 Documents clear
Isolasi dan Identifasi Mikroba Rumen Penghasil Antihistamin “Histamine Methyl Transferase“ Iriyanti, Ning; Rustomo, Budi; Rimbawanto, Efka Aris
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 26, No 1 (2009)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2009.26.1.88

Abstract

The aim of this research was to find antihistamine ”Histamine Methyl Transferase” of microbe producers through isolation and testing of their activities on various substrates. The isolation process found four putative isolates i.e. N2k, N2b, N3 and N5. Their general characteristics were round, big and formed regular colonies; regular edge and wavy colonies. Colonies were whitish, shiny and had low convex elevation. N2k, N2b, and N5 isolates were Gram negative bacteria whereas N3 was Gram positive. Those isolates were non-motile. Further tests were conducted to examine the isolate capability to produce catalase and utilize citric acid as the carbon source to which they showed positive result. Nitrate reduction test showed positive results for N2b and N5 but not forN2k and N3. The ability to ferment sugars into acid and gas indicated that all isolates except N3 were capable of fermenting glucose and lactose. However, only N2k was capable to produce gas.
Kualitas Air Pasca Pengerukan Alur Transportasi Batu Kapur di Sungai Donan Cilacap Sastranegara, Mohammad Husein; Lestari, Sri
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 26, No 1 (2009)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2009.26.1.90

Abstract

River Donan has the potential of international ship’s channel due to the availability of industry. Unfortunately, the drift gill net operation was predicted causing river shallowness and disturbing the limestone transportation channel. The aim of research was to know the water quality based on physic, chemical, and biological aspects at the north, central, and south area of dredging; and sediment texture, benthos and plankton as proponent. Survey was done at all areas of dredging from January to March 2008. Water samples were taken according to PPRI Number 82/2001 and the procedure of SNI. Data was analised as descriptive and supported by Sorensen similarity index. The result showed that the concentration of TDS, NH3, Mn and Fe was above levels considered as water quality standard at all areas; even the concentration decreases. On the other hand, increasing the concentration of H2S was only at the central area, whereas the concentration of Pb, silty clay sediment texture, and domination of benthic of Rhinoclavis asper and plankton of Lyngbya spirulinoides were at the central and south areas (similarity index of this research was 95.14%; the research before was 99.15%). The conclusion showed that the dredging did not change the high concentration of TDS because it which was taken along tide was hampered by the net. In addition, the concentration of Pb, silty clay sediment texture, and the dominant benthic and plankton have the same tendencies at the central and south areas.
Pendugaan Populasi Harimau Sumatra dan Satwa Mangsanya di Taman Nasional Bukit Barisan Selatan Winarno, Gunardi Djoko; Ameliya, Revi
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 26, No 1 (2009)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2009.26.1.86

Abstract

Bukit Barisan Selatan National Parks has been given a named by World Heritage Committee as The Tropical Rain Forest of Sumatra (The World Heritage site) in July 2004 in Shozou China. However, many of Bukit Barisan Selatan National Park’s forest have already been wrecked by irresponsible people. Illegal logging is a big problem in Bukit Barisan Selatan National Parks. Indonesian’s forests are home to megabiodiversity in the world, but deforestation has caused a lengthening list of the inhabitant species to be classified as endangered. For example, the Sumatran tiger has a category to be an appendix I species by Convention on International Trade in Endangered Species (CITES).The decline of a species is very often a strong indicator of degradation in the local habitat, which can also negatively impact the biodiversity of that area. Perhaps the greatest threat to the survival of the tiger is destruction of its habitat. With the expansion of human populations, the logging of forests, the elimination of natural prey, and the spread of agriculture, there is continuation of destruction toward Sumatran tiger population. Monitoring the Sumatran tiger and its prey using camera trap can provide a data base on the continuity of the Sumatran tiger population management.
Syzygium (Myrtaceae) di sepanjang Sungai Welang Taman Wisata Alam Gunung Baung Purwodadi Mudiana, Deden
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 26, No 1 (2009)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2009.26.1.916

Abstract

Syzygium is one of a genus within family Myrtaceae which consists of many potentially useful species. This genus is quite distributed covering most of Indonesian geographical area. This research was aimed to evaluate species richness of Syzygium grows naturally along River Welang, Taman Wisata Alam Mount Baung, and its habitat. This was done by an explorative method along River Welang. Data recorded included geographical position, diameter and height of Syzygium and its morphological characters. A total of 23 individuals were obserbed belonging to four Syzygium species, i.e., S.semarangense, S. javanicum, S. pycnanthum, dan Syzygium sp.
Kerusakan Tegakan Akibat Pemanenan Kayu Konvensional dan Teknik Reduced Impact Logging di Hutan Alam Muhdi, Muhdi; Sofia, Diana
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 26, No 1 (2009)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2009.26.1.917

Abstract

The objective of this research was to determine the effect of reduced impact logging (RIL) to residual stand damages in natural tropical forest. This research examined the effects of reduced impact logging to residual stand damages in natural tropical forest of West Kalimantan. The effects of RIL to residual stands were studied using the data of three plots with each size of 100 x 100 m, which were placed based on random at landing, middle skiddtrail and tips of skiddtrail, respectively. The degree of residual stand damages based on tree population and stage of vegetation development in conventional logging and RIL was as follow: for poles and trees of 33.15% (moderate stand damage) and of 19.53% (light stand damage). Based on the size of injury of every individual tree, the degree of trees  damages caused by timber harvesting in conventional logging and RIL was as follow: trees heavy injury (64.66% and 57.20%), trees medium injury (20.30% and 24.00%) and trees light injury (15.03% and 18.80%). The most type stand damage were the falling dawn 36.84% and 32.01% and broken trees 22.78% and 21.25%. This research indicated that conventional logging in the tropical natural forest caused greater damage on residual stand when compared with a reduced impact logging. Based on the principles of sustainable forest management, the residual stand stocks in the forest was sufficient.
Bioekologi Udang Macrobrachium spp. di Sungai Banjaran Kabupaten Banyumas Kusbiyanto, Kusbiyanto
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 26, No 1 (2009)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2009.26.1.914

Abstract

Shrimp species diversity in River Banjaran is in a trend to reduce from time to time. In order to verify this trend, a research on bioecology of freshwater shrimp Macrobrachium spp. In River Banjaran was done using survey method. River’s body was divided into three different areas according to their environmental condition. On each area, six sampling stations were defined with the distance among stations were ± 0.5 km. The shrimps were collected using electroshocker, ancho, and waring. The samples were preserved in 70% ethanol and were identified. Only four species of shrimps were found during the survey, those are Macrobrachium cowlesi, M. idea, M. esculentum, and M. oenone.  Shrimp relative abundance among areas was similar with the highest relative abundance was found for M. cowlesi. Sex ratio analysis for all species showed that male individuals were more abundance than the female ones. This result provided a picture that species diversity of freshwater shrimps in River Banjaran is still in continuous decrease.  Therefore, it is necessary to make some efforts to conserve the rest of Machrobrachium species in Banjaran River.
The Effects of Nitrogen Fertilizer Dosages on Anatomical Characters of Ipomoea batatas L. Leaf Juwarno, Juwarno; Sumarsono, Sumarsono; Samiyarsih, Siti
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 26, No 1 (2009)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2009.26.1.915

Abstract

The research was conducted in order to understand the effects of various nitrogen dosages on the anatomical characters of Ipomoea batatas leaf, and to find out the most influential dosage on the number and size of leaf anatomical characters. The characters observed consisted of thickness of cuticle, leaf, and palisade, as well as stoma size, and their density within mm2 of leaf surface. The method applied was experiments arranged in Completely Randomized Design. The results showed that all levels of nitrogen dosage affected the anatomical characters of sweet potato leaf while the most influential dosage was 200 kg urea per ha.

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