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Jurnal Akademika Biologi
Published by Universitas Diponegoro
ISSN : -     EISSN : 26219824     DOI : -
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology
Jurnal Akademika Biologi diterbitkan oleh Departemen Biologi Fakultas Sains dan Matematika Universitas Diponegoro Semarang. Jurnal ini sebagai media publikasi hasil karya ilmiah lulusan S1 Departemen Biologi. Jurnal Akademika Biologi menerima artikel-artikel yang berhubungan dengan bidang ilmu biologi.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 9 Documents
 1 
Search results for , issue "Vol. 5 No. 1 Januari 2016" : 9 Documents clear
STRUKTUR KOMUNITAS MIKROARTROPODA TANAH DI LAHAN PENAMBANGAN GALIAN C ROWOSARI, KECAMATAN TEMBALANG, SEMARANG Wiatri Larasati; Rully Rahadian; mochamad Hadi
Jurnal Akademika Biologi Vol. 5 No. 1 Januari 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Rowosari miningsite isthe ‘C’ type of excavation area in Semarang. Mining activities may affect environmental disturbance, including on soil fauna. This research aims to determine the community structure of soil microarthropods in Rowosari mining area. The research was conducted in August-September 2015. Soil samples were taken on diagonal plot of 5x5 m2 with a five-point sampling on two stations, namely Post Mining Area (PoMA) and Pre Mining Area (PeMA). The analysis used in the research are relative abundance index, Shannon-Weiner diversity index, evenness index, and Sorensen similarity index. The results shows that there are 360-660 individuals/m2 from 10 ordo and 24 taxa found in Rowosari Excavation Site. The highest relative abundance index is Carabidae (22,22) in PoMA station and Prostigmata (21,21) in PeMA station. The diversity both station belongs to medium category (2,43-2,45). The highest evenness index is 0,95. The similarity taxa of soil microarthropods in two stations are categorized as medium. Community structure of soil microathropods in Post Mining Area and Pre Mining Areawere no significant differences. Keywords: Community structure, Soil microarthropods, MiningexcavationC.
PERTUMBUHAN SEMAI Rhizophora mucronata lamk. PADA KOMPOSISI JENIS MANGROVE DAN LEBAR SALURAN OUTLET YANG BERBEDA DI TAMBAK WANAMINA KELURAHAN MANGUNHARJO, SEMARANG. Nuzula Muharrahmi; Rini Budi Hastuti; Endah Dwi Hastuti
Jurnal Akademika Biologi Vol. 5 No. 1 Januari 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Mangrove or commonly referred to as mangrove coastal areas generally live in tropical and sub-tropical. The mangrove forest is an important area for maintaining environmental quality. The existence of mangrove forests in Indonesia is increasingly alarming due to the conversion of mangrove vegetation. One of the mangrove vegetation has undergone over the function in Indonesia is in the Village of Mangunharjo, Tugu subdistrict, Semarang. This area has a lot of experience over the land which was originally a mangrove forest vegetation community is then used as aquaculture area, residential and industrial areas. This study aims to assess the level of seedling growth of  R. mucronata  Lamk. in  mangrove type composition and the width of outlet channel which is different in silvofishery. This research used experimental method with Randomized Design (RBD). Seedlings planted in pond (silvofishery) on a single mangrove species composition and mix as well as the width of outlet channel which is different. Data obtained in the form of average height and diameter growth of seedlings R. mucronata Lamk. Data were analyzed using analysis of variance (ANOVA). The results showed that mangrove type composition and the width of outlet channel which is different on seedling growth of R. mucronata Lamk. were not significantly different.Keywords: mangrove, silvofishery, vegetation, outlet
ISOLASI, IDENTIFIKASI 16S rRNA DAN KARAKTERISASI MORFOLOGI BAKTERI PENDEGRADASI PLASTIK POLIETILEN (PE) Norma Sainstika Pangestu; Anto Budiharjo; MG Isworo Rukmi
Jurnal Akademika Biologi Vol. 5 No. 1 Januari 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Plastic waste is one of the environmental issues that still need to be handled properly. plastic  commonly  used  are  basically  formed  by  polyethylene  which  is  contains  chemical compound.  Less cavity of plastic can disturb soil aeration which is important for other aerobic organism. This problem lead to increasing ecological threat. The main objective of present study is to isolate the soil microorganism that have a role as an agent  through plastic degradation. Bacteria were isolated from the surface of the plastic which is buried in soil. The  isolation is been carried out through soil serial dilution method and inoculated into selective King’s B agar. Isolates were obtained and then tested the ability of degradation of the PE. Isolates with the highest degradation  activity isolates G then identified using molecular methods based on 16S rRNA. the results showed that the 16S rRNA sequencing isolates G measuring 1,500 bp with the highest homologous species derived from the genus Bacillus. Keywords: Polyethylene, bacteria, biodegradation
PERUBAHAN KUALITAS AIR DAN HUBUNGANNYA DENGAN PERTUMBUHAN SEMAI Rhizophora mucronata Lamk. BERDASARKAN WAKTU PENGAMATAN YANG BERBEDA PADA SALURAN TAMBAK WANAMINA Tyagita Andarani; Endah Dwi Hastuti; Rini Budi Hastuti
Jurnal Akademika Biologi Vol. 5 No. 1 Januari 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

System management of mangrove areas, which are associated with fish farming as a solution of damage to mangrove areas which less productive, called wanamina pond system (silvofishery). Rhizophora mucronata is a kind of mangrove which is susceptible to changes in environmental quality, so it can directly affect its growth. This study aims to know the growth rate of R.mucronata, water quality, and the relationship of the two, based on different observation time on channel of wanamina pond. The methods used in this study called Completely Randomized Design, while the data analysis that is used in the form of analysis of variance (ANOVA) and multiple linear regression analysis. The result of the analysis of variance for growth of R. mucronata’s seed in four months showed that a growing number of leaves, branches, the stands, and the rod diameter from different observation time shows no different results. Water quality parameter that shows different results are temperature and salinity. Analysis of the relationship of water quality with growth of R. mucronata from multiple linear regression indicates that turbidity and pH give influence negatively to growth of diameter for R. mucronata.Keywords: Rhizophora mucronata, Seed Growth, Water quality.
STRUKTUR KOMPOSISI TUMBUHAN BAWAH TEGAKAN JATI DI KEBUN BENIH KLON (KBK) PADANGAN BOJONEGORO Nazilatun Nikmah; J Jumari; Erry Wiryani
Jurnal Akademika Biologi Vol. 5 No. 1 Januari 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Undergrowth vegetation are bottom layer of the tree community. Community of undergrowth vegetation are always identical as the weeds that had been considered as a disturber and harm. When viewed from another perspective undergrowth is a component of diversity. This study aimed to analyze the structure of the composition and reviewing the use of plants from three different plots under cropping Tectona grandis in seeds clones garden (KBK) Padangan. Data were collected at three research stations are in plots 1983, 1988 and 1993 using the plot as much as 36 squared, each size of 1 m x 1 m. Undergrowth plants were  obtained from three research stations is 19 species from 12 families. Family Fabaceae or legumes are most often found. The highest undergrowth had Importance Value Index (IVI) from plots 1983 and 1993 was Sentrosema (Centrosema pubescens) and on plots 1988 is grass (Brachiaria decumbens). Index of species diversity (H') in the three different  research stations showed the diversity of species are moderate at the region. Values of similarity index (IS) undergrowth vegetation showed  the plant community from  three research stations are different.Keywords: Undergrowth vegetation, species diversity, KBK  Padangan,  vegetation Analysis
PENGARUH SUHU PENGERINGAN YANG BERBEDA TERHADAP KUALITAS CABAI RAWIT (Capsicum frutescens L.) Evi Ari Parfiyanti; Rini Budi Hastuti; Endah Dwi Hastuti
Jurnal Akademika Biologi Vol. 5 No. 1 Januari 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Chili pepper has a high economic value but it belongs to the type of fruit that can easily damage because of the climacteric phase, therefore, it is needed a proper postharvest handling, either by drying with different temperatures for 14 hours. The research objective is to find out the effect of drying temperature for the quality of chili pepper and find out the best drying temperature that influences the quality of chili pepper. The research design that used is completely randomized design (CRD) with three replications. The drying temperatures that use are T1 (50°C), T2 (60°C) and T3 (70°C). The research parameter consists of weight loss, water content, vitamin C and discoloration. Methods of analyzing the data that used is analysis of variance (ANOVA) continued by significant different test of Duncan Multiple Range Test (DMRT) at the 95% signification level. The chili pepper that drainaged in temperature of 50°C can shows the best result for defend of chili pepper color and texture. The highest contens of vitamin C can be found in temperature of 50°C that show the number of 63.287 mg%. The drying temperature of 70°C give the highest weight loss that show the number of 3.833%  and give the lowest water content for about 72.4%. The research of study show that the drying temperature influence the alteration of chili pepper quality which show the result that it can decrease the fruit weight loss, the water content of chili pepper, vitamin C contens and also the color and the texture of chili pepper.Keywords: Chili pepper, drying temperature, weight loss, water content, vitamin C
KEANEKARAGAMAN TUMBUHAN BERDASARKAN CIRI MORFOLOGI POLEN DAN SPORA DARI SEDIMEN TELAGA WARNA, DIENG, KAB. WONOSOBO, JAWA TENGAH Nurrahmah Azizah; Sri Widodo Agung Suedy; Erma Prihastanti
Jurnal Akademika Biologi Vol. 5 No. 1 Januari 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Pollen and spore may be used to identify the name of plants because on pollen and spore there is an outter wall, called exine, which have specific structure and sculpture. This specific morphology of pollen and spore may be easily identified, therefore the name of plant itself may be known directly. The aim of this research is to find out the various of pollen and spore morphology of Telaga Warna sediment and the name of plant itself may be known,moreover the plant diversity and the plant which is dominant around Telaga Warna may be known as well. This research had been conducted with fetched the sediment sample from the edge of Telaga Warna, Dieng, preparation of sample were using chemical, and finally make microscopic preparation.Pollen and spore observed by some parameters: shape, size, polarity, symmetry, aperture, and sculpture. The information, furthermore, analyzed by making description of pollen and spore morphology and quantitative data. The result of this research reaveal that there are 34 kind of plants from pollen and spore observation. The amount of Pteridophytes is 53%, Non-Arboreal Pollen (NAP) is 29%, and Arboreal Pollen (AP) is 18%. The plant which dominant around Telaga Warna is Polypodiaceae, with the value of dominance index is 5,66. Its spore morphology has trilete aperture, heteropolar, bilateral symmetry, and the sculpture is psilate. The average of plant diversity temporally in Telaga Warna is low, with the average value of diversity index is 1,56, however the alteration of vegetation temporally in Telaga Warna is stable dynamics.Keywords: morphology, pollen, spore, Telaga Warna
PERTUMBUHAN SEMAI R. mucronata PADA TAMBAK WANAMINA DENGAN LEBAR SALURAN INLET DAN KOMPOSISI MANGROVE YANG BERBEDA Ruli Nur Hidayanti; Rini Budi Hastuti; Endah Dwi Hastuti
Jurnal Akademika Biologi Vol. 5 No. 1 Januari 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Fishpond as aqua culture in certain regions are managed intensively to obtain optimum results. Rising the areas of fishpond induced decrease of mangroves areas due to land conversion. Managing sytem of fishpond in association with mangrove forests began to be developed and known as silvofishery.         R. mucronata is one type of mangrove which has an important role for the environment of fishpond. This research aims to know the growth of R. mucronata in duct inlet of silvofishery with different width and mangrove compositions. This research was carried out axperimentally using Random Design Group (RAK) factorial pattern 2x3. The first factor is the compositions of mangrove (single & mix) and the second factor is inlet width (1 m. 2m, and 3 m). The result of the ANOVA analysis showed that height, diameter growth on each inlet width and composition of different mangrove showed that there is no significant difference of growth during two months research. However on L3K1 (3 meters inlet width with a single mangrove composition) produce heigh and diameter growth were better than on the other inlet width and mixture composition of mangrove.  Key words : Growth, Seedling, R. mucronata, Silvofishery.
PERTUMBUHAN SEMAI Rhizophora mucronata PADA SALURAN TAMBAK WANAMINA DENGAN LEBAR YANG BERBEDA Afiyatul Aini; Rini Budi Hastuti; Endah Dwi Hastuti
Jurnal Akademika Biologi Vol. 5 No. 1 Januari 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

The expansion of the aquaculture area causes reduction of mangrove ecosystems. Silvofishery combines fisponds and mangrove planting. Rhizophora mucronata often select for rehabilitation of mangrove forests. This research aims to know growth differences of Rhizophora mucronata in the ducts of silvofishery and variation width range of ducts. This research was carried out from the basic of Random Design Group (RAK) used three treatments which each of treatment was repeated 3 times. The treatments were the variation width of the ducts (R): R1 = R2 = 1 m, 2 m and R3 = 3 m. Growth data was analyzed using statistical approach, The Analysis of Variance (ANOVA). The results of the analysis observational during two months research of Rhizophora mucronata showed that the height and diameter growth of each width of duct (1 m, 2 m, 3 m) wasn't significantly different, but there was a growth tendency in height and diameter of Rhizophora mucronata. Mangrove within 3 m width of duct has best growth condition compared with the others. Plant Branch wasn't grown and foliages were grown partially. Key words: Growth, Rhizophora mucronata, Mangrove, Silvofishery.

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