cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Knowledge Management Department
Contact Email
kmd@biotrop.org
Phone
+62251-8323848
Journal Mail Official
biotropia@biotrop.org
Editorial Address
SEAMEO BIOTROP Jl. Raya Tajur Km. 6 Bogor 16134 INDONESIA
Location
Kota bogor,
Jawa barat
INDONESIA
BIOTROPIA - The Southeast Asian Journal of Tropical Biology
Published by Southeast Asian Regional Centre for Tropical Biology
ISSN : 02156334     EISSN : 1907770X     DOI : http://dx.doi.org/10.11598/btb
Core Subject : Health, Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Veterinary
BIOTROPIA, The Southeast Asian Journal of Tropical Biology, is a scientific publication of the Southeast Asian Ministers of Education Organization (SEAMEO) – Southeast Asian Regional Center for Tropical Biology (BIOTROP). It publishes articles in the broad areas of tropical ecosystems and environmental impacts, biodiversity conservation and sustainable development and biotechnology.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 4 Documents
 1 
Search results for , issue "No. 14 (1999)" : 4 Documents clear
GENETIC DIVERSITY ANALYSIS OF THERMOPHILIC BACTERIA FROM CANDRADIMUKA CRATER IN CENTRAL JAVA EMPLOYING PCR-RFLP OF 16S-rRNA GENE DESILIYARNI, TEMMY; SuwANTOAAAo, ANTONIUS; SUHARTONO, MAGGY T.; PURWADARIA, TRESNAWATI
BIOTROPIA No. 14 (1999)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (196.046 KB) | DOI: 10.11598/btb.1999.0.14.155

Abstract

The specific primers for bacteria (63f and 1387r) were used to amplify the 16S-rRNA genes from total community genomic DNA of thermophilic bacteria. The total community genomic DNA was obtained from muds and water samples of Candradimuka crater, Dieng Plateau, Central Java. PCR products were cloned into vector  pCR*2.1-TOPO (3.9 kb) and transformed into Escherichia coli TOPIC. Two  tetrameric restriction endonucleases  Rsal  and  Hhal  were employed to generate Restriction Fragment Length Polymorphisms (RFLP) paterns. These enzymes yielded 10 and 9 groups of 16S-rRNA profiles or OTU (Operational Taxonomic Units) from 27 16S-rRNA gene clones. Rsal was found to be more discriminative in differentiating the clones than Hhal. Rsal-RFLP indicated that OTU 7 and OTU 3 represented the most abundant clones, i.e. 6 and 5 clones respectively. The distribution of 16S-rRNA gene clones could  indicate relative distribution of  specific groups of  thermophilic  bacteria  in  their  natural habitat. Analysis of diversity at the DNA level could represent both culturable  and  unculturable bacteria in the  environment. Similarity analysis showed that  at level  0.600 there  were 8 different  groups from 10  RFLP  profiles generated by  Rsal  digestion. This study indicated that there were at least 8 groups of different thermophilic bacteria occupying Candradimuka crater. Key words: Thermophiles, 16S-rRNA, Candradimuka crater.
MORPHOLOGICAL COMPARISON OF THREE ASIAN NATIVE HONEY BEES (APIS CERANA, A. DORSATA, A. FLOREA) IN NORTHERN VIETNAM AND THAILAND NIEM, N.V.; TRUNG, L. Q.
BIOTROPIA No. 14 (1999)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (107.509 KB) | DOI: 10.11598/btb.1999.0.14.153

Abstract

Three species of Asian native honey bees  (Apis cerana, A. florea and A. dorsata)  from northern Vietnam and Thailand were morphologically analyzed for investigations on their geographic variations and relations. In Vietnam, samples were collected from feral and managed colonies. In Thailand, the collections were from feral colonies or from field bees on flowers. Morphological analysis was carried out, using measurements common to honeybee taxonomy. Measured characters were done under stereomicroscope with an ocular micrometer. ANOVA  program and multivariate statistical analyses were applied for treating the data. Overall,  A. cerana  populations in northern Vietnam are significantly morphologically different than from those in Thailand. It may be due to their different geographic locations between the Thai and Vietnamese populations of A. cerana. A. florea bees from Vietnam are generally bigger in size than those from Thailand, but the differences are uncertain. In contrast, the body size of A. dorsata populations from Thailand are bigger than those from Vietnam. However, these differences are also not significant. It is necessary to take further comparative investigations of these bee species from both countries. Key words: Honey bee/Apis cerana/Apis dorsata/ApisJlorea/moif>ho\ogy
Litter Fall in A Primary and Two Logged-over Lowland Tropical Rainforests in Pasirmayang, Jambi. WASRIN, UPIK ROSALINA; PUTERA, AGUS EKA
BIOTROPIA No. 14 (1999)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.1999.0.14.156

Abstract

Litter accumulation in a  primary and a logged-over  lowland dipterocarp  forest at Pasirmayang, Jambi was measured using the litter trap method. In the primary forest, traps were placed in four distinct areas, reflecting the succession stages of the forest from building to maturation. In the logged-over forest, litter production was measured at two different sites, one cut in 1979/1980 and the second in 1983/1984. In the primary forest, average litter production during the observation period was 925 g m"2yr'. In the logged-over forest, average litter production was 721 g m'2 yr1 for the site cut in 1979/1980 and 706 g m'2 yr1 for the site cut in 1983/1984. Leaves comprised the major contributor of litter with 67% of total litter produced in the primary forest, 67% of total litter in the 1979/1980 cut logged-over forest, and 65% of total litter in the 1983/1984 cut logged-over forest. The purpose of the study was  to use litter fall as a measure of forest productivity  to assess the recovery of logged-over forests and, to provide a basis for comparison of forest-derived land practices for appropriate forest management strategies. Key words: Litter production/primary forest/logged-over forest/forest productivity/Pasirmayang/Jambi.
THE OCCURRENCE OF INSECTS, FUNGI AND ORGANOLEPTIC CHARACTERISTICS IN STORED COFFEE BEANS IN LAMPUNG S. DHARMAPUTRA, OKKY; SUNJAYA, SUNJAYA; RETNOWATI, INA; AMAD, MUHAMMAD
BIOTROPIA No. 14 (1999)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.1999.0.14.154

Abstract

A survey on postharvest handling and technology processing of coffee beans at farmer, trader and exporter levels was conducted in West Lampung and Tanggamus regencies of Lampung province during harvest time (July 1998). Interviews and sampling of coffee beans were carried out during the survey. The number of respondents at farmer, trader and exporter  levels was 22, 20 and 4, respectively, while the number of samples collected from each level was 20. All samples were analyzed for moisture content, physical quality, insect and fungal infestation, reducing sugar content, and coffee cupping. The results of the interviews indicated that postharvest handling and technology processing became better from farmers to exporters. Moisture contents of coffee beans collected from farmers and traders were higher than the tolerable limit recommended by SNI (13%). Physical quality of coffee beans collected from exporters was higher than that collected from farmers and traders. Insects were found on coffee beans collected from farmers, traders and exporters, but the number of species and the percentage of samples infested by insects from each level were relatively low. The predominant species was Liposcelis entomophila. The number of fungal species on coffee beans collected from farmers was higher than  that collected from traders and exporters. The predominant species at the three levels was Aspergillus niger, but the lowest percentage of beans infected by this fungus was found on coffee beans collected from exporters. The lowest percentage of samples infected by all fungi was also found on coffee beans collected from exporters. Reducing sugar content of coffee beans collected from exporters was lower than that from farmers and traders. Aroma and flavor values tended to increase from farmers through traders to exporters, while the body decreased. Some off-flavors (i.e. earthy, mouldy, fermented and woody) were encountered in a few coffee samples from farmers as well as from traders. There was no off-flavor encountered in the coffee samples from exporters. Key words:    Stored products pests/Postharvest handling/Technology processing/Moisture content Physical quality/Insect/Fungi/Reducing sugars/Coffee cupping/Coffee/ Lampung.

Page 1 of 1 | Total Record : 4

 1 

Filter by Year

1999 1999


Reset
Filter By Issues
All Issue Vol. 33 No. 1 (2026): BIOTROPIA Vol. 33 No. 1 January 2026 Vol. 32 No. 3 (2025): BIOTROPIA Vol. 32 No. 3 December 2025 Vol. 32 No. 2 (2025): BIOTROPIA Vol. 32 No. 2 August 2025 Vol. 32 No. 1 (2025): BIOTROPIA Vol. 32 No. 1 April 2025 Vol. 31 No. 3 (2024): BIOTROPIA Vol. 31 No. 3 December 2024 Vol. 31 No. 2 (2024): BIOTROPIA Vol. 31 No. 2 August 2024 Vol. 31 No. 1 (2024): BIOTROPIA Vol. 31 No. 1 April 2024 Vol. 30 No. 3 (2023): BIOTROPIA Vol. 30 No. 3 December 2023 Vol. 30 No. 2 (2023): BIOTROPIA Vol. 30 No. 2 August 2023 Vol. 30 No. 1 (2023): BIOTROPIA Vol. 30 No. 1 April 2023 Vol. 29 No. 3 (2022): BIOTROPIA Vol. 29 No. 3 Desember 2022 Vol. 29 No. 2 (2022): BIOTROPIA Vol. 29 No. 2 Agustus 2022 Vol. 29 No. 1 (2022): BIOTROPIA Vol. 29 No. 1 April 2022 Vol. 28 No. 3 (2021): BIOTROPIA Vol. 28 No. 3 December 2021 Vol. 28 No. 2 (2021): BIOTROPIA Vol.28 No.2, Agustus 2021 Vol. 28 No. 1 (2021): BIOTROPIA Vol. 28 No. 1 April 2021 Vol. 27 No. 3 (2020): BIOTROPIA Vol. 27 No. 3 December 2020 Vol. 27 No. 2 (2020): BIOTROPIA Vol. 27 No. 2 August 2020 Vol. 27 No. 1 (2020): BIOTROPIA Vol. 27 No. 1 April 2020 Vol. 26 No. 3 (2019): BIOTROPIA Vol. 26 No. 3 December 2019 Vol. 26 No. 2 (2019): BIOTROPIA Vol. 26 No. 2 August 2019 Vol. 26 No. 1 (2019): BIOTROPIA Vol. 26 No. 1 April 2019 Vol. 25 No. 3 (2018): BIOTROPIA Vol. 25 No. 3 December 2018 Vol. 25 No. 2 (2018): BIOTROPIA Vol. 25 No. 2 August 2018 Vol. 25 No. 1 (2018): BIOTROPIA Vol. 25 No. 1 April 2018 Vol. 24 No. 3 (2017): BIOTROPIA Vol. 24 No. 3 December 2017 Vol. 24 No. 2 (2017): BIOTROPIA Vol. 24 No. 2 August 2017 Vol. 24 No. 1 (2017): BIOTROPIA Vol. 24 No. 1 April 2017 Vol. 23 No. 2 (2016): BIOTROPIA Vol. 23 No. 2 December 2016 Vol. 23 No. 1 (2016): BIOTROPIA Vol. 23 No. 1 June 2016 Vol. 22 No. 2 (2015): BIOTROPIA Vol. 22 No. 2 December 2015 Vol. 22 No. 1 (2015): BIOTROPIA Vol. 22 No. 1 June 2015 Vol. 21 No. 2 (2014): BIOTROPIA Vol. 21 No. 2 December 2014 Vol. 21 No. 1 (2014): BIOTROPIA Vol. 21 No. 1 June 2014 Vol. 20 No. 2 (2013): BIOTROPIA Vol. 20 No. 2 December 2013 Vol. 20 No. 1 (2013): BIOTROPIA Vol. 20 No. 1 June 2013 Vol. 19 No. 2 (2012): BIOTROPIA Vol. 19 No. 2 December 2012 Vol. 19 No. 1 (2012): BIOTROPIA Vol. 19 No. 1 June 2012 Vol. 18 No. 2 (2011): BIOTROPIA Vol. 18 No. 2 December 2011 Vol. 18 No. 1 (2011): BIOTROPIA Vol. 18 No. 1 June 2011 Vol. 17 No. 2 (2010): BIOTROPIA Vol. 17 No. 2 December 2010 Vol. 17 No. 1 (2010): BIOTROPIA Vol. 17 No. 1 June 2010 Vol. 16 No. 2 (2009): BIOTROPIA Vol. 16 No. 2 December 2009 Vol. 16 No. 1 (2009): BIOTROPIA Vol. 16 No. 1 June 2009 Vol. 15 No. 2 (2008): BIOTROPIA Vol. 15 No. 2 December 2008 Vol. 15 No. 1 (2008): BIOTROPIA Vol. 15 No. 1 June 2008 Vol. 14 No. 2 (2007): BIOTROPIA Vol. 14 No. 2 December 2007 Vol. 14 No. 1 (2007): BIOTROPIA Vol. 14 No. 1 June 2007 Vol. 13 No. 2 (2006): BIOTROPIA Vol. 13 No. 2 December 2006 Vol. 13 No. 1 (2006): BIOTROPIA Vol. 13 No. 1 June 2006 No. 25 (2005) No. 24 (2005) No. 23 (2004) No. 22 (2004) No. 21 (2003) No. 20 (2003) No. 19 (2002) No. 18 (2002) No. 17 (2001) No. 16 (2001) No. 15 (2000) No. 14 (1999) No. 13 (1999) No. 12 (1999) No. 11 (1998) No. 10 (1997) No. 9 (1996) No. 8 (1995) No. 7 (1994) No. 6 (1992) No. 5 (1992) No. 4 (1991) No. 3 (1989) No. 2 (1989) Vol. 1 No. 1 (1987) More Issue