cover
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kab. banyumas,
Jawa tengah
INDONESIA
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).
Arjuna Subject : -
Articles 6 Documents
Search results for , issue " Vol 31, No 1 (2014)" : 6 Documents clear
Kajian Kualitas Air Pasca-Pengerukan Alur Pelayaran Batu Kapur Sungai Donan Cilacap Pamungkas, Yogi; Sahirman, Sidharta; Sastranegara, Moh. Husein
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.2014.31.1.222

Abstract

Donan River dredging impacts on ecological regions and communities around the basin. Dredging from Buoy 27 to Buoy segment 34 as an effort to reduce silting of existing in Cilacap and Donan River shipping channel maintenance efforts limestone PT Holcim Indonesia Tbk. Cilacap Plant. The purpose of the study is to determine the condition of post-dredging water quality in terms of physical and chemical factors, to determine the condition of post-dredging water quality in terms of biological factors; and to analyze the relationship between physical, chemical, and biological factors post-dredging shipping lanes limestone around Cilacap Donan River. The research method used was purposive sampling method. The study was conducted from March-May 2013, with five replications. Samples were taken at three stations namely Station 1 (area before dredging), Station 2 (dredging area), and Station 3 (area after dredging). The results showed that water quality conditions of post-dredging chemical in terms of physical factors tend to decrease at station 2 (TSS amounted of 303.6 mgl-1, BOD5 9.806 mgl-1, COD 171.4 mgl-1), followed by station 3 (TSS 268 mgl-1, BOD5 at 18.182 mgl-1, COD is 262.8 mgl-1) and station 1 (TSS 204.4 mgl-1, BOD5 at 12.258 mgl-1, and COD of 252 , 2 mgl-1). Water quality conditions in terms of post-dredging tend to decrease at station 2 (the number of types makrobenthos by 5 species, number of individuals ind/m2 makrobenthos by 147, the number of types of plankton by 11 species and number of individuals of 1,461 ind/l) followed by station 3 (the number of species makrobenthos by 6 species, number of individuals ind/m2 makrobenthos by 180, the number of types of plankton by 12 species, and the number of individual plankton of 1,341 ind / l), and Station 1 (the number of types makrobenthos by 7 species, number of individuals makrobenthos ind/m2 by 327, the number of types of plankton by 12 species, and the number of individual plankton of 1,340 ind / l). In general, the relationship between physical factors, chemical, and biological post-dredging shipping lanes limestone around the same Cilacapmemilikikecenderungan Donan River bahwakondisi declining water quality at Station 2, followed by Station 3 and Station 1.
Adaptasi Anatomis Tanaman Kedelai Varietas Slamet Akibat Perbedaan Ketinggian Tempat Juwarno, Juwarno; Abbas, Muachiroh; Sucianto, Eddy Tri
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.2014.31.1.218

Abstract

A research on the “Anatomical Adaptation of Soybean ‘Slamet’ in Various Altitudes” has been conducted. The research was aimed to traced anatomical adaptation of soybean ‘Slamet’ in various altitude and to proved altitude give the anatomical adaptation to soybean ‘Slamet’. The result of this research showed that altitude has caused the increase of leaf mesophyll thickness. The different altitude does not affect the cuticle thickness, length and width of stomata, stomatal and trichomatal density per mm2 of leaf area. The altitude affected the anatomical adaptation of soybean ‘Slamet’ was 250 m above sea level with the average mesophyll thickness of 112.40 µm. A research entitled on the “Anatomical Adaptation of Soybean ‘Slamet’ Variety Plant Because of in Various Altitudes Differentiation” have has been conducted. The research was aimed was to traced anatomical adaptation of soybean ‘Slamet’ variety plant because of in various altitude differentiation and to proved altitude differentiation give the anatomical adaptation of to soybean Slamet variety plant. The result of the this research showed that altitude differentiation has caused the increase of leaf mesophyll thickness raise of soybean Slamet variety leaf. The different altitude differentiation does not caused of affect the cuticle thickness, the length and width stomata, the stomatal and trichomatal density per mm2 leaf area. The altitude most affected on the anatomical adaptation of soybean ;Slamet; variety was 250 m above sea level with the most average mesophyll thickness of 112.40 µm.A research on the “Anatomical Adaptation of Soybean ‘Slamet’ in Various Altitudes” has been conducted. The research was aimed to traced anatomical adaptation of soybean ‘Slamet’ in various altitude and to proved altitude give the anatomical adaptation to soybean ‘Slamet’. The result of this research showed that altitude has caused the increase of leaf mesophyll thickness. The different altitude does not affect the cuticle thickness, length and width of stomata, stomatal and trichomatal density per mm2of leaf area. The altitude affected the anatomical adaptation of soybean ‘Slamet’ was 250 m above sea level with the average mesophyll thickness of 112.40 µm. A research entitled on the “Anatomical Adaptation of Soybean ‘Slamet’ Variety Plant Because of in Various Altitudes Differentiation” have has been conducted. The research was aimed was to traced anatomical adaptation of soybean ‘Slamet’ variety plant because of in various altitude differentiation and to proved altitude differentiation give the anatomical adaptation of to soybean Slamet variety plant. The result of the this research showed that altitude differentiationhas caused the increase of leaf mesophyll thickness raise of soybean Slamet variety leaf. The different altitude differentiation does not caused of affect the cuticle thickness, the length and width stomata, the stomatal and trichomatal density per mm2 leaf area. The altitude most affected on the anatomical adaptation of soybean ;Slamet;varietywas 250 m above sea level with the most average mesophyll thickness of 112.40 µm.
Kajian Kualitas Air dan Penentuan Status Mutu Air Rawa Bendungan Cilacap Kurnianto, Hanief Wibowo; Widyastuti, Endang; 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.
Sexing pada Ikan Brek Puntius orphoides (Valenciennes, 1863) Menggunakan Metode Truss Morfometrics Suryaningsih, Suhestri; Sagi, Mahmed; N., Kamiso H.; Hadisusanto, Suwarno
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.2014.31.1.219

Abstract

The red chick barb (Puntius orphoides) is one of fresh water ichtiofauna included in family Cyprinidae found a lot in River Klawing, the biggest and richest river in Purbalingga with 18 species of fish.  The aim of this study was to find out the differences between male and female red chick barb by truss morphometrics and to find out truss morphometrics distance.  The material used were sex mature fish from River Klawing.  The variables meassured included morphometry based on truss morphometrics point, number of male and female fish.  Truss distance was then compared to the total length so that the truss distance ratio was determined.  Next, a statistical test i.e. t test was performed between the male and female fish.  The results of this study showed that the male and female red chick barb can be distinguished by truss morphometrics method.  The distance ratio to be used as diagnostic character were 11 and 24 ration of truss morphometrics distance compared found in the head, body, and tail.
N-Acyl Homoserine Lactones sebagai Signal Quorum Sensing untuk Meningkatkan Efektifitas Bakteri Fosfat Tamad, Tamad
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.2014.31.1.220

Abstract

Phosphate bacteria (PB) are able to release P-adsorption by soil. PB  effectiveness in releasing adsorption P  controled by quorum sensing (QS) signal. PB  produces a QS signal  as N-acyl homoserine lactones (N-HSL). The aim of this study are to determine the type of N-HSL as QS signal of PB (Pseudomonas trivialis, P. putida and P. fluorescens) and find the source of N-HSL from root extracts of some plants (rice, corn, bamboo, banana and peanuts). Analysis of N-HSL using HPLC (Hitachi UV-VIS detector L-2420), L-2200 autosampler (20 mL), L-2130 pump and column C OOF-4250-CO/10 µm LaChrom Ultra 18 (2 µm) 100 A 150 x 4.60 mm 10 m KPOW 490065-1 (Phenomenex), temperature 60° C, flow rate of 0.9 mL/minute  and a gradient of 30-100 % in 1.0 minutes. Standard N-HSL  is C4-HSL, 6, 8, 10, 12 homoserine lactones (Sigma-Aldrich, Germany) was dissolved in acetonitrile (Merch, India) with a concentration of 50 mM. P-dissolved by PB determined by staining NVM and a spectrophotometer at a wavelength of 413 nm. PB population is determined by the OD (optical density) at a wavelength of 600 nm. PB  populations  on medium Pikovskaya influenced by PB isolates, the type of P sources and duration of incubation. N-HSL generated by PB highest is Butanoyl (C4) homoserine lactones. PB isolates 9 and Ca-phosphate sources produce N-HSL most. Root extract of rice, corn, bamboo, bananas and peanuts can be a source of   N-HSL. Soluble phosphorus from medium Pikovskaya influenced by the type of PB isolates and source of P.
Longevitas dan Efikasi Pelet Trichoderma harzianum terhadap Sclerotium rolfsii Penyebab Penyakit Layu pada Tanaman Tomat (Solanum lycopersicum L.) Muljowati, Juni Safitri; Dwiputranto, Uki; Budisantoso, Iman
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.2014.31.1.221

Abstract

Trichoderma harzianum is one of the antagonist fungi that can be used as a biofungicide to control soil-borne pathogens such as Sclerotium rolfsii, the cause of wilt isease of tomato. To ease the application of T.harzianum fungi in the field, it should be prepared a formulation in form of pellet. The longevity of T.harzianum pellet is determined by the viability of T.harzianum fungi contained in it, whereas the efication/ effectivity of T.harzianum pellet is determined by the longevity of the pellet.  The objectives of this study are to investigate the interaction between storage period and application dosages in controlling wilt disease of tomato;  and the dosage and storage period of T.harzianum on the effectiveness in controlling wilt disease of tomato. The experiment was carried out experimentally by using a Completely Randomized Design (CRD) in a factorial pattern. The first factors were storage period (W) consisted of 5 levels, i.e. 0, 3, 6, 9, and 12 weeks; the second factors were theapplication dosages (D) consisted of 6 levels, i.e. 0, 25, 50, 75, 100, and 125 grams. They were replicated 3 times each. The viability observation of T.harzianum was completed at the end of storage period of the pellets, the disease occurence and severity was since the 4th day after inoculation with 4 day interval until the tomato plant produced flowers. Research result showed that the interaction between storage period and different application dosages of T.harzianum pellets has influenced the increase of wilt disease control of tomato. Furthermore, storage period of 6 weeks and T.harzianum application of 50 g were the most effective in controlling wilt disease of tomato.

Page 1 of 1 | Total Record : 6