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KONSEP JENIS PALEM: SEBUAH PENGANTAR
Rustiami, Himmah
BERITA BIOLOGI Vol 9, No 5 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences
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DOI: 10.14203/beritabiologi.v9i5.1982
In recent decade, the needs of clear species concept for constructing monograph became more crucial. Trends on species concept have been more overwhelming nowadays because of the rigorous phylogenetic species concept based on the idea of the smallest unit sexually from a single population or based on the known lineages within taxa in regard with unique characters combination.This paper would like to discuss further how is the palm species concept and their distribution pattern in West Malesia using case study on the Nypa species concept.
VARIASI INTRASPESIES Monascus purpureus DALAM BERBAGAI SAMPEL ANGKAK DARI JAWA TIMUR
Suharna, Nandang
BERITA BIOLOGI Vol 9, No 5 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences
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DOI: 10.14203/beritabiologi.v9i5.1996
Study was carried out to know intraspecific variation within Monascus purpureus in Chinese red rice (angkak) collected from a number of cities in East Java, covering isolation, characterization and identification of Monascus based on cultural and microscopic characters.Results showed that cultural and microscopic observation on 19 representative isolates of Monascus which each isolate was observed from 19 sample of angkak showed variations among those isolates.Those characters were rate of growth, pigmentation,crystalline hyphae, spore size and cleistothecium diameter.These results indicated that there are intraspecies variaty on M.purpureus used in angkak production. Moreover, cultural and morpholological characters such as colony diameter and askomata seemingly can not be used as taxonomic characters.
IDENTIFIKASI MOLEKULAR ISOLAT KAPANG PENGHASIL Ã-GLUCAN BERDASARKAN DAERAH INTERNAL TRANSCRIBED SPACER (ITS)
Srikandace, Yoice;
Caterina A, Ines Irene;
Mangunwardoyo, Wibowo
BERITA BIOLOGI Vol 9, No 5 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences
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DOI: 10.14203/beritabiologi.v9i5.1987
Research was conducted to identify the fungal isolate G.23 which produces b-glucan from the Biopharmacy Laboratoriums collection.Indonesian Institute of Sciences (LIP1) based on the sequence of the Internal Transcribed Spacer (ITS) regions.DNA was isolated from mycelia and the ITS region was amplified by Polymerase Chain Reaction (PCR) with ITS1 and ITS4 primers. The PCR product was purified using the QIAquick PCR Purification kit (Qiagen). BigDye terminator cycle sequencing Ready Reaction Kit (Perkin Elmer Applied Biosystem) was used and the product was purified with the AutoSEQ G-50 Kit (Qiagen).The sequence obtained analysed using Basic Local Alignment Search Tool nucleotide (BLAST)n homology search.The BLASTn result showed that the fungal isolate G.23 belongs to the genus Aspergillus. Taxa closely related to this isolate were Aspergillus elegans,A. ochraceus and A.sclerotiorum with 96% sequence homology.ClustalX was used for sequence-alignment. Phylogenetic analysis was constructed using the Neighbour Joining (NJ) method with Kimura two parameters. The phylogenetic tree obtained showed that fungal isolate G.23 separated from A. elegans, A. ochraceus and A. sclerotiorum which indicated that fungal G.23 belonged to a different spesies.Morphological observation on culture and microscopic appearance of the fungal isolate G.23 supported that this isolate differs from A. elegans, A. ochraceus and A. sclerotiorum.
EGAKAN BAMBU DIKEBUN RAKYAT KOTAMADYA SALATIGA
Widjaja, Elizabeth A;
Sunaryo, Sunaryo;
Hamzah, Hamzah
BERITA BIOLOGI Vol 9, No 5 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences
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DOI: 10.14203/bb.v9i5.2001
Bamboo is one of the important and favorite plants in the villages, however the management of this plant is less interest either from the people or even the government. Because of that there are many bamboo garden has been turned into housing or industrial area, although some people understand that bamboo can be used to prevent soil erosion as well as water conservation. In Central Java, bamboo is mainly used to make furniture, whereas the bamboo handicrafts is only made by the local people for daily uses.The uses of bamboo for handicraft is mainly occurred in Yogyakarta Province, although the bamboo material for this purposes is imported from Central Java. Because of that a study on the bamboo stand in Central Java Province is very important to support the furniture industry which is found also in this neighbouring city. Based on a study done at the Promasan Village, Salatiga, it is found that the bamboo stand occurred in the plot (50 m x 50 m, 5 plots) was 332.96 clum/ha on 2003, whereas the bamboo stands on 2004 decreased till 331.2 clump/ha. The number of clump might decrease due to over harvesting, so many clump was died. The same phenomena was also occurred at the bamboo potency on 2004 which was decreasing compare to 2003 data. The bamboo potency/clump might be increased, but the total production of bamboo culm/ha/year was decreasing sharply compare to the bamboo condition on 2003. This situation can be seen also from the regeneration of bamboo which was decreasing compare the data on 2003 to 2004. The species found in this village was bambu tali (Gigantochloa apus), which was dominated at this village. This potency of this bamboo stands is very high, because the local people used this bamboo for daily use and it used more than other species.However,Gigantochloa atter has also a demand for the bamboo furniture, because of that the potency of this species is also high.Then Dendrocalamus asper which also been used for bamboo furniture. The potency of Bambusa vulgaris is very low in this village, because this species was rarely used.
ANALISA VEGETASI HUTAN RIPARIAN DATARAN RENDAH DITEPI SUNGAI NGGENG, TAMAN NASIONAL KAYAN MENTARANG, KALIMANTAN TIMUR
Purwaningsih, Purwaningsih
BERITA BIOLOGI Vol 9, No 5 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences
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DOI: 10.14203/beritabiologi.v9i5.1992
Study on the riparian forest of Nggeng River bank at Kayan Mentarang National Park was carried out with quadrate method. It would cover species composition and vegetation structure. The results of a floristic inventory of trees with DBH e" 10 cm in a lowland riparian forest of Nggeng river side show that 106 species, consist of 53 genera and 29 families in the plot of 2 hectare sampled. The two leading families in terms of number of species were Dipterocarpaceae and Myrtaceae while according to the total sum of importance values were Dipterocarpaceae and Fabaceae. The common species in two plots were Saraca hulletii, Parashorea parviflora, Dipterocarpus oblongifolius, Castanopsis motleyana, and Dryobalanops lanceolata. The diversity of the river-side were lower than the other forest in Kalimantan and in north is more rich of species than south plot. The forest type on the river side were shown mixed dipterocarp forest, because the forest dominated by dipterocarps species. Forest structure on the sides of Nggeng River were shown there were some emergent trees, they are up to 45 m tall and in diameter >100 cm. Some emergent trees in the location were such as Parashorea parviflora, Dipterocarpus oblongifolius and Shorea spp. Lists on the most 10 leading family trees, 10 leading family saplings, density, frequency and important values of each inventory plants species are provided.
ABSORBSI GLUKOSA DAN SUKROSA SEBAGAI SUMBER KARBON UTAMA OLEH KOMUNITAS MPG PADA KONDISI ANAEROBIK-AEROBIK
Supriyati, Dyah
BERITA BIOLOGI Vol 9, No 5 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences
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DOI: 10.14203/beritabiologi.v9i5.1988
To study the role of substrate on the establishment of glycogen accumulating organism (MPG), activated sludge originated from anaerobic-aerobic process was implemented on waste water treatment plant which was acclimated with glucose and sucrose.Both susbtrates were effectively utilized by microbial communities during anaerobic condition. Those absorbed substances were converted to glycogen.Glycogen was also used as energy generating process as indicated by a decrease of glycogen. The dominancy of glycogen accumulating organism suppresses the polyphosphate accumulating organism as indicated by no significant release of orthosphosphate during anaerobic condition.
EKOLOGI DAN PERSEBARAN GEWANG (Corypha utan Lamk.) DI SAVANA TIMOR, NUSA TENGGARA TIMUR
Partomihardjo, Tukirin;
Naiola, BP
BERITA BIOLOGI Vol 9, No 5 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences
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DOI: 10.14203/bb.v9i5.2002
A study of the distribution and ecology of Corypha utan Lamk. (gewang) within the natural habitat of savana ecosystem at Usapisonbai village area, Kecamatan Nekamese, Kabupaten/Regency Kupang, East Lesser Sunda Islands was conducted to gain an understanding factors controlling distribution and dynamics populations of the species. Three plots with total of 2.1 ha were established at different sites. Reconnaissence throughout the study area revealed that gewang grows in the lowlands below 200 m altitude, but away from the immmediate vicinity of the sea. Populations were studied within different savana types. It was concluded that gewang appears to be relatively associated to the open areas. The abundance of gewang within the study area formed the main savana vegetation as savanna gewang type. Distribution pattern of gewang within the study area tend to be concentrated at the lower part of the plots in particular at relatively flat areas. Examination of seedling and sapling densities in relation to parent trees revealed a large number of propagules fallings to disperse, and in consequence tendencies toward dumb distributions. The seedlings tend to grow under dead parent tree and or at flat of lower areas. Based on the population structure, gewang revealed has good regeneration strategy with high population of younger stages.
SISTEM SOSIAL JANTAN MONYET HITAM SULAWESI (Macaca nigra) DI CAGAR ALAM TANGKOKO-BATUANGUS, SULAWESI UTARA
Saroyo, Saroyo
BERITA BIOLOGI Vol 9, No 5 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences
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DOI: 10.14203/beritabiologi.v9i5.1993
A study on male social system of Sulawesi crested black macaque {Macaca nigra) has been conducted at Tangkoko-Batuangus Nature Reserve, North Sulawesi from January to October 2008.The aim of this research was to evaluate the male social system based on the social interaction among the males.The material was a habituated group called Rambo II that had 7 adult males and 19 adult females at early stage observation. Dominance hierarchy was determined with ad libitum sampling based on their results in agonistic interaction at 3 early-days of every month. The dynamics of the dominance hierarchy was traced during 10 months. Determination of dominance hierarchy linearity used Landaus index of linearity. Data of approaches among the males and their copulation frequency was collected with focal animal sampling.Approaches interaction data were analyzed for the direction of their approaches and the scoring of approachee responds that consisted of positive, neutral, negative, and without approaching.Results showed that during 10 months, there were 3 adult males that emigrated from Rambo II and one adult male that immigrated into the group.All dominance hierarchy had linearity indexes 1.0 that meant the hierarchies are perfect linear or linear and transitive.The a-male had highest frequency of copulation both with estrous and non-estrous females.For mid-rank male, on the other hand, the frequency was not always related to their rank. There was a tendency that dominate males approached subordinate males that was proved with their up/down index. Negative respond showed by subordinate males due to approaching by dominate ones was higher than the opposite. This result indicated that dominance played role in spatial controlling and freedom of interaction, for subordinate individual, the dominate presentating likely intimidated them. From those results, it can be concluded that the social system of male Sulawesi crested black macaque in not egalitarian and more despotic, different with the social system of the female that is considered as egalitarian.
UJI DAYA HAMBAT DAUN SENGGANI (Melastoma malabathricum L.) TERHADAP Trichophyton mentagrophytees DAN Candida albicans
Gholib, Djaenudin
BERITA BIOLOGI Vol 9, No 5 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences
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DOI: 10.14203/beritabiologi.v9i5.1989
The in vitro study of" inhibition effect of senggani leaves (Melastoma malabathricum L.) ethanol extract on Trichophyton mentagrophytees and Candida albicans was conducted by diffusion and dilution method. The extract was diluted into 5%, 10%,15% and 20% for diffusion test, and 1%, 2%, 3%, 4% and 5% for dilution test on T. mentagrophytees, and 2%, 4%, 6%, 8%, and 10% on C. albicans. The results showed that the extract inhibited fungal growth. Agar diffusion test (agar wheel) was observed by diameter of inhibition zone around the wheel. At 20% extract dilution, the diameter mean was estimated 30 mm on T. mentagrophytees, and 21 mm on C. albicans. In dilution test, the result showed Minimal Inhibition Concentration (MIC) of the extract was 3% on T. mentagrophytees, and 6% on C. albicans. It is concluded that the extract effect of inhibition on T. mentagrophytees is greater than that on C. albicans.
KONDISI HUTAN MANGROVE DITELUK AMBON: PROSPEK DAN TANTANGAN
Suyadi, Suyadi
BERITA BIOLOGI Vol 9, No 5 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences
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DOI: 10.14203/beritabiologi.v9i5.1985
The destruction of mangrove forest constitutes one of the greatest threats to biodiversity and conservation of Ambon Bay.But,data and information of condition and potential of mangrove in Ambon Bay are lacking. We link three methods: remote sensing,Biological survey using transect, and sedimentation sampling to study the condition and potential of mangrove in Ambon Bay specially for biodiversity and sediment trapped. Remote sensing data showed that area of mangrove forest in Ambon Bay 34 ha and has declined dramatically in the past decade.The research recorded 8 species of mangrove; two are recorded as new species compared to the last survey.Based on data collected from four transects, mangrove forest in Ambon Bay is habitat for 8 species of mollusc and species of fish, crustacean, bird and epiphytes. Sediment analysis showed that mangrove forest 80% more effective to reduce sediment that come in to Ambon bay. Finally, the result indicated that condition of mangrove forest in Ambon Bay has been declined, nevertheless, have great potential for conservation of biodiversity and efficient in trapping sediment that come in to Ambon Bay.