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INDONESIA
BERITA BIOLOGI
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 18 Documents
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Search results for , issue "Vol 5, No 3 (2000)" : 18 Documents clear
POTENSIAL AIR PADA TURGOR LOSS POINT TUMBUHAN HUTAN GAMBUT DALAM KONDISI STRES GENANGAN DIKAWASAN SUNGAI SEBANGAU, KALIMANTAN TENGAH B. P Naiola
BERITA BIOLOGI Vol 5, No 3 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i3.1117

Abstract

Water is one of the main phenomenons dominating the life cycle of biodiversity components in tropical peat land area in Central Kalimantan. However, the exist of water is no longer as a determinant positive factor in the life of plants in that area; instead, water has became a factor creating other problems i.e. flooding stress. This report deals with study on the physiological aspects of tropical peat land plant species. Three species were used namely tumih (Combretocarpus rotundatus),belangeran (Shorea balangeran) dan ramin (Gonystylus bancatus).Employed Pressure-Volume Curve generated from Pressure Chamber, this study were concentrated on the water potential at turgor loss points(?total ??po)in flooding conditions. It is assumed that (?total  ??po)) is important in explaining the adaptation ability of these plants to flooding stress. Results shows that ( ?total ??po)in tumih was (-1,06 MPa), belangeran (-1,53 MPa) and ramin (-1,51 MPa) were not significant different between the three species; thus they had similar ability in responding to flooding stress. However, turgor pressure of these species were significantly different; thus the ratio of each MPa decrease of turgor pressure of each species against their own (?total  ??po)were different where tumih (0.73 MPa), balangeran (0,78 MPa) and ramin (0,81 MPa). It is suggested that tumih would reach early turgor loss point than the other two species due to its smaller turgor pressure.Comparisons of (?total ??po)among some tropical species were also presented. Due to the relationship between the three water potential components (total water potential, osmotic potential and turgor pressure),thus (?total ??po)maybe genetically controlled, thus it is worth to encourage for further study on this topic.
METALS BIOCONCENTRATION OF FRESHWATER FISHES IN CENTRAL KALIMANTAN AS AN EVALUATION CRITERIA FOR MANAGEMENT OF INLAND WATER FISHERY RESERVE Dede Irving Hartoto; Awalina Awalina
BERITA BIOLOGI Vol 5, No 3 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i3.1113

Abstract

Heavy metal bioconcentration was examined and evaluated in the muscle of several of freshwater fishes species collected from a complex of some oxbow lakes in Kahayan River and from Lake Sembuluh, Central Kalimantan. The objective of the study was to find natural background values of heavy metals in water, sediment and its biomultiplication factor related to their concentration in water and the fish position in the foodweb. In this analysis,one to twenty-five grams of fish muscle samples was obtained from the posterior part of pectoral but anterior to anal fins. Water samples, which were taken from surface and bottom layers of the lakes, were mix and preserved with nitric acid. Sediment samples were obtained by using Ekman Grab and the interstitial waters were extracted by using wet digestion technique.Iron concentration in fish muscle is the highest in omnivorous, followed by that of in carnivorous and detritivorous fish. Manganese, lead and mercury had different pattern of bioconcentration levels. Bioaccumulation factor for each metal and at each food habit category was also variable; the lowest value of 0.7 for iron in second consumer and 28.2 for mercury in primary consumer. Mechanism of heavy metal intrusion to fish muscle is very intricate and apparently depends upon feeding habit of each species. Concentration of mercury in water and fish muscle was far above minimum risk level, but concentrations of iron, manganese and lead in water and fish was considered still safe for environment as well as for human health. Potential utilization of these results as evaluation criteria for fishery reserve is discussed.
VEGETATION OF FRESH WATER SWAMPY AREAS IN WEST AND CENTRAL KALIMANTAN Eizi Suzuki; Takashi Kohyama; Herwint Simbolon
BERITA BIOLOGI Vol 5, No 3 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i3.1109

Abstract

Vegetation types in fresh water swampy areas: Mandor in West Kalimantan and Lahei in Central Kalimantan, were compared.There were three types: kerangas, kerangas shrub and peat swamp forest. Kerangas forests in both areas had similar flora in some extent.That of peat swamp was very different from kerangas though both vegetations distributed in adjacent area.
DIVERSITY OF APHYLLOPHORALES FUNGI ISOLATED FROM TANJUNG PUTING NATIONAL PARK, CENTRAL KALIMANTAN AND ITS POTENTIALITY FOR LIGNIN DECOMPOSITION Typuk Artiningsih; Herwint Simbolon; Suhirman Suhirman; Mitsuru Osaki
BERITA BIOLOGI Vol 5, No 3 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i3.1114

Abstract

A total of fifty-three samples of fungal basidiocarp were collected from peat area in Tanjung Puting National Park, Central Kalimantan, Indonesia. These samples are mostly determined to genus until more studies are available.The fungi were isolated on CMA medium then the isolated strains were purified on PDA medium. The fungi belong to at least 3 families of Aphyllophorales, however there were a wide diversity in the genus with respect to macroscopic examination.An agar plate screening procedures was developed for the rapid selection of fungi and estimation of their capacity for lignin-decomposer. The test is based on the visualization and interpretation of the formation of halo zone or decolourization process in well-defined agar medium containing Poly R-478. The selected isolates were also tested in to rhemazol brilliant blue R salt (RBBR) medium. Five isolates had the ability to decolourize either Poly R-478 or RBBR. These isolates showed a qualitative lignin decomposition although a comparative study of selected fungi revealed the difference potentiality. The highest loss of lignin was 28.18% and attempts have been made to determine the unidentified fungi, which is resupinate type, by direct sequencing of 18s ribosomal DNA (rDNA).
ANALISIS VEGETASI DAN DEGRADASI JENIS TUMBUHAN HUT AN GAMBUT SETELAH KEBAKARAN DIKAWASAN TAMAN NASIONAL TANJUNG PUTING KALIMANTAN TENGAH Razali Yusuf
BERITA BIOLOGI Vol 5, No 3 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i3.1110

Abstract

This report deals with the result of an ecological study with reference to disclose the effect of wild fire and human interference on the peat forest deterioration and plant species degradation in Tanjung Harapan Camp, Tanjung Putting National Park, Central Kalimantan. By using quadrate method, a one-hectare both fired and unfired (natural) plots were compared.Within the fired-plots, only 19 plant species were recorded belongs to 16 genera and 12 families, while in the unfired plots, 50 plant species belongs to 34 genera and 23 families were found. The dominant species in both plots was component of pioneering species;Macaranga hypoleuca was one of the dominant.The result of successions after one year of fire showed that Dillenia suffruticosa and Baccaurea bracteata became the most frequent species found with the largest area of distribution.
DAMPAK PENAMBANGAN GAMBUT TERHADAP BIODIVERSITAS IKAN DI KABUPATEN BENGKALIS, RIAU Haryono Haryono; Agus H Tjakrawidjaja
BERITA BIOLOGI Vol 5, No 3 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i3.1115

Abstract

A study on peat mining impact on fish diversity was conducted at Perawang, Bengkalis Regency,Province of Riau between 1996 and 1997.The purpose of study is to discover the diversity and potential of fishes in relation with water quality due to peat mining activities.The results recorded 17 species belonging to 14 genus and 10 families in mining areas, while in the protected areas (with 3 Watersheds) recorded 4 species in Bukit Batu, 21 species in Siak Kecil and 17 species in Kampar.Cyprinidae is dominant family in mining areas, while Belontiidae in protected areas.The water quality ranges are DO between 0.49 and 4.60 ppm, CO2 between 2.31 and 26.36 ppm, pH between 3.80 and 4.80 and turbidity 1.40 and 4.20. The potential offish found are mainly consumption and ornamental fish.
PHYTOPLANKTON CHANGES IN SOME INLAND WATER HABITAT OF CENTRAL KALIMANTAN, INDONESIA Sulastri Sulastri; Dede Irving Hartoto
BERITA BIOLOGI Vol 5, No 3 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i3.1111

Abstract

The changes in the density, number of genera, diversity index of phytoplankton in some oxbow lakes (LakeRengas, Lutan,Takapan) and lowland lake (Lake Sembuluh) are described.Phytoplankton samples collected in rainy season, dry season (1995 to 1997) and in the forest fire period (October 1997).Before forest fire period, most of the time the density of phytoplankton was high (489 to 759 individuals/1) in January or rainy season especially in oxbow lake system. The high number of phytoplankton in rainy season is not common in the standing water in the floodplain system. This is probably because of the type of water that is acid water with the pH (4.43 to 4.66) in Lake Rengas, Lake Lutan (4.93 to 5.93) and Lake Takapan (4.03 to 4.64).In acid water oxbow lake, only some certain species occurred in the dry season. In January (rainy season),the inputs of water from main river increase the pH and presumably also nutrient, as shown by higher conductivity.In Lake Rengas, the highest density found in June that dominated by one genera (Oocystis).These facts probably because of phytoplankton input from the river Rungan that also show high density of the same species.It is also showed that the number the number of genera is also high in rainy season. Nonetheless of index diversity changes is not clear. In October 1997, when the forest fire period the density of phytoplankton and some genera as a group of Euglenophyceae increased.The highest density was found in Lake Sembuluh that range from 10,507 to 39,536 individuals/1.The phytoplankton density of Lake Rengas, Lutan and Takapan are 3,254, 1,414 and 9,019 respectively.The relationship of forest fire to the phytoplankton density is briefly discussed.
EKOLOGI HUTAN GAMBUT DITAMAN NASIONAL TANJUNG PUTING, KALIMANTAN TENGAH Edi Mirmanto; Ruddy Polosakan; Herwint Simbolon
BERITA BIOLOGI Vol 5, No 3 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i3.1116

Abstract

Ecological studies of peat-swamp forest was conducted in the Tanjung Puting National Park,Central Kalimantan. One-hectare permanent plot has been establishes in order to describe the forest structure and floristic composition. Within 1-ha plot 141 species of tree (dbh >10 cm) and saplings (dbh 5-10 cm) belongs to 84 genera and 43 families recorded. Glutta wallichii, Neoscortechinia philippinensis and Gonystyllus bancanus were dominant tree species, whereas Baccaurea racemosa was very dominant for sapling stage.Tree's density 2 2 was 728 /ha with basal area of 43.01 m /ha whereas density of sapling was 904 /ha with basal area of 3.8 m /ha. Most (30.7 %) of trees with dbh 10 - 30 cm and only 2.23 % of them reach up to dbh > 50 cm. There are three canopy layers that are I-layer was 26.8-33.6 m,II-layer was 17.8-26.8 m and Ill-layer was 9.8-17.6 m high.

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