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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 342 Documents
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Isolasi dan Identifasi Mikroba Rumen Penghasil Antihistamin “Histamine Methyl Transferase“ Ning Iriyanti; Budi Rustomo; Efka Aris Rimbawanto
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.
Pengaruh Kerapatan Populasi Tanaman Sela dan Mulsa Plastik terhadap Pertumbuhan dan Produksi Jagung Wahyu Widiyono
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 27, No 1 (2010)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2010.27.1.186

Abstract

Research of plant population density and intercropping of pigeon pie (Cajanus cajan L.) Millsp. and plastic mulching on maize were carried out in field research of R and D Centre for Biology, Indonesian Institute of Sciences, Cibinong from October 2008 to Februari  2009. The aim was to examine the effects of  plant population density and intercropping, as well as mulching to the growth and yield of maize. The resultas showed that population density, intercropping and mulching affected the maize vegetative growth. However, the maize yield was not influenced by population density; but was influenced by intercropping and mulching. Mulching increased maize production, but intercropping by using C. cajan decreased production.
Keragaman Benthos pada Budidaya Rajungan (Portunus pelagicus) di Tambak Percobaan Maranak, Balai Riset Perikanan Budidaya Air Payau Maros Sulawesi Selatan A. Marsambauana Pirzan; Suharyanto Suharyanto
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 28, No 3 (2011)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2011.28.3.278

Abstract

A study has been conducted in Maranak Pond Station of Research Institute for Coastal Aquaculture, Maros South Sulawesi.  The objective of this study was to analyse the benthos diversity on the swimming crab (Portunus pelagicus) culture in the brackishwater pond.  Sampling of benthos was conducted each month for four times.  Benthos  samples were obtained from 9 ponds. Pipe (pvc) in diameter of 2 cm was used to collect benthos then preserved in 10% of formalin solution. Microscopically identification of benthos was conducted until genus and counting cell method was used to calculate their population density.  Research results showed that benthos composition were 32 genera of phytoplankton and 15 genera of zooplankton. Varies benthos density at the range of 954 – 23,850 ind. / cm2 and genus at the range of 2 – 14 genera.  Gut content of swimming crab were 6 genera of phytoplankton, Copepod nauplii and unknown organism.   Benthos diversity indices was classified moderately stable in ponds 2 – 6 and 8 - 9 while in pond 1 and 7 were not stable.  Evenness indices of benthos in ponds 3 - 8 were relatively more normal of distribution than ponds 1, 2 and 9. Dominance indices of ponds 3 - 9 relatively better than ponds 1 and 2.
Pewarisan Karakter Fenotip Melon (Cucumis melo L. ‘Hikapel Aromatis’) Hasil Persilangan ♀ ‘Hikapel’ dengan ♂ ‘Hikadi Aromatik’ Budi Setiadi Daryono; Nugroho Nofriarno
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 35, No 1 (2018)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2018.35.1.586

Abstract

This research aims to develop cultivars with superior phenotypes of melon and high level of productivity. This research used the individual results of crossing between melon  ♀ ‘Hikapel' with ♂ 'Hikadi Aromatik'. The research included qualitative and quantitative phenotype characterization test. The research was conducted in Center of Agrotechnology Innovation University of Gadjah Mada (PIAT-UGM), Kalitirto, Berbah, Sleman, Yogyakarta and Laboratory of Genetics Faculty of Biology UGM on December 2016 until March 2017. Quantitative data analysis used ANOVA testing through PKBT-STAT 2.02 software with Random Complete Block Design (RCBD) method at significance level of 1% and 5%. Melon 'Hikapel Aromatik' has several advantages including oval shape, without net, without lobes, crispy texture, skin-collored yellow RHS (6A), has a 7-14 brix, has volatile aromatic compound and transposon influenced. Based on the results of recapitulation of variance, the characters of 'Hikapel Aromatik' was not uniform.
Struktur dan Kemampuan Tumbuh Kembali Hutan Mangrove Cikiperan Cilacap Edy Yani
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 23, No 3 (2006)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2006.23.3.170

Abstract

Study was conducted to know forest structure and regeneration of mangrove Cikiperan Cilacap. Transect method was used for this study, the data of seedling were collected by quadrat method, sapling and tree were collected by quarter method. The result of this research showed there were 7 species seedling, 11 species sapling and 18 species trees. Dominant species was Rhizophora mucronata, Rhizophora apiculata, Bruguiera gymnorhiza, Avicenia alba, Aegiceros corniculatum, Nypa fruticans, and Ficus retusa. The forest of mangrove regeneration was generally very good. Seven species, however, were recorded in critical condition, i.e. Ceriops tagal, Sonneratia alba, Intsia bijuga, Cynometra ramniflora, Cerbera adolam, Leucaena leucodendrom, and Lumnitzera littorea.
Nilai Konservasi Tinggi Kawasan Hutan Nusakambangan Sebagai Sumber Penghidupan bagi Masyarakat Lokal Eming Sudiana; Imam Widhiono MZ
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 28, No 2 (2011)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2011.28.2.262

Abstract

A study on ecosystem services of Nusakambangan tropical low land rain forest was conducted by survey method. The purposes of this study are to identify the ecosystem services needed by local community families, to define degree of dependency of the local community family on the ecosystem services, to know the status of high conservation value (HCV 5) and to design the conservation strategy. The results showed that Nusakambangan low land rain forest has HCV 5. The basic need of the local community families has depends on the ecosystem service of Nusakambangan tropical low land rain forest. The silvopastory technology can be applied as conservation strategy of Nusakambangan tropical low land rain forest.
Ekstraksi Na-Alginat dari Rumput Laut Padina sp. Menggunakan Konsentrasi Kalium Hidroksida yang Berbeda Elza Septiani; Ginanjar Pratama; Raja Marwita Sari Putri
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 34, No 3 (2017)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2017.34.3.500

Abstract

The objective of this study was to obtain the best sodium alginate extract from Padina sp. with different potassium hydroxide concentration. Padina sp. was collected in coastal Senggarang, Tanjungpinang, Riau Islands Province. The raw material of Padina sp. was extraction by potassium hydroxide with different concentration (0.6%, 0.8%, 1%).  We analyzed content of moisture, ash, yield, viscosity and pH. The best results obtained in the treatment with  a solution of KOH concentration 0,8% with content of moisture 10,87%, ash 31,24%, yield 17,82%, viscosity 275,50 cP and pH 8,21. 
Pengaruh Variabel Kualitas Air terhadap Produktivitas Udang Vaname (Litopenaeus vannamei) di Kawasan Pertambakan Kabupaten Gresik, Jawa imur A. Marsambuana Pirzan; Utojo Utojo
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 30, No 3 (2013)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2013.30.3.137

Abstract

Water quality variable to affect the productivity of Pacific white shrimp (L. vannamei) in the brackishwater ponds. Therefore the aimed of this research to study the water quality variable  to  influent on the productivity of Pacific white shrimp (L. vannamei) in the brackishwater ponds. The research was conducted in the brackishwater ponds area that were in fish farming operation in the brackishwater ponds in the brackishwater ponds of Gresik Regency, East Java Province by conducting interviews with respondents to obtained primary data in the brackishwater ponds productivity through the submission of questionnaires, while the technical data of water quality variable were obtained by direct measurement in situ. As independent variable were water quality variables, namely: temperature, dissolved oxygen (DO), salinity, pH, total suspended solid (TSS), turbidity, nitrate, nitrite, phosphate, and total organic matter (TOM) while the dependent variable was  the productivity of Pacific white shrimp. Regression model selection “best” method was based on the backward. The results showed that productivity of Pacific white shrimp in the range from 133.3 to 3,000 kg / ha with an average of  690.38  kg / ha. Water quality variables that a have positive effect on the productivity of Pacific white shrimp  were nitrate and phosphate, while water quality variables have a negative effect on the productivity of Pacific white shrimp. were pH and TSS.
Kajian Kualitas Air dan Penentuan Status Mutu Air Rawa Bendungan Cilacap Hanief Wibowo Kurnianto; Endang Widyastuti; Ismangil Ismangil
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 31, No 1 (2014)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2014.31.1.223

Abstract

Rawa Bendungan is one of the water resources which is open for public. This condition has caused excessive utilization and ignorance of sustainability. Fishery waste, the tofu industry, cow farm, and agriculture around Rawa Bendungan have led to the decrease in water quality and endanger the sustainability of ecological functions and benefits of Rawa Bendungan. The aims of this study was to find out the condition of the physical, chemical, and biological parameters and to determine the quality status of Rawa Bendungan. Parameters of physical, chemical, and biological were analyzed descriptively. Determination of water quality status by STORET analysis. The average yield measurements of physico-chemical parameters include transparency (25.67-68 cm), TSS (34-66.67 mg/l), temperature (28-31 °C), pH (6-7), dissolved oxygen (2.47-7.47 mg/l), free CO2 (3.23-8 mg/l), BOD5 (1.53-14.53 mg/l), COD (24-85.33  mg/l), ammonia (0.0903-0.1803 mg/l), nitrite (0.0094-0.0997 mg/l), nitrate (0.8125-3.5072 mg/l), and orthophosphate (0.0265-0.1460 mg/l). Phytoplankton community consists of 48 species of Chlorophyta (191,808 ind/l; 47.26%), 29 species of Chrysophyta (105,948 ind/l; 25.98%), 8 species of Cyanophyta (64,152 ind/l; 15.73%), and 12 species of Euglenophta (44,712 ind/l; 10.96%). Rawa Bendungan waters are included in the category of heavily polluted by tofu industry and agriculture waste, moderately polluted by fishery waste, and lightly polluted by cow farm waste.
Model Pendugaan Biomassa Vegetasi Mangrove di Kabupaten Indragiri Hilir Riau Endang Hilmi; Asrul Sahri Siregar
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 23, No 2 (2006)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2006.23.2.160

Abstract

Indragiri Hilir mangrove forest is a type of one which is influenced by sea water tide, freshwater, soil texture, and salinity. The diversity of flora and fauna in the mangrove forest is relatively higher than that of many others in Indonesia. The potential vegetation is dominated by Bruguiera spp., Rhizophora spp., Avicennia spp., and Soneratia spp. This study was aimed to (1) determine biomass potential in Indragiri Hilir mangrove forest and (2) develop estimation model on the mangrove biomass with diameter of stem. The results showed that biomass potential of Rhizophora apiculata was 536.4 to 2,333.0 kg/tree, R. mucronata was 376.0 to 900.5 kg/tree, and Bruguiera spp. was 328.0 to 546.0 kg/tres. Estimation model on biomass of Bruguiera were 0.9450903501 D1.865827743 for stem biomass and 10.11259103 D 1.30096243 for total biomass, while those of R. apiculata were 0.2109981916 D 2.453342882 for stem biomass and  0.7574460068 D 2.232516567 for total biomass.

Page 10 of 35 | Total Record : 342

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