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Yusuf, Razali
Research Center for Biology-Indonesian Institute of Sciences
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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STUDI VEGETASI HUTAN RAWA AIR TAWAR DI CAGAR ALAM RIMBO PANTI, SUMATERA BARAT Yusuf, Razali; Purwaningsih, Purwaningsih
BERITA BIOLOGI Vol 9, No 5 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v9i5.1986

Abstract

A Vegetation study of some different freshwater swamp forests in Rimbo Panti Nature Reserve, West Sumatera was carried out with a quadrat methode.The results of a floristic inventory of trees with DBH e" 10 cm show that 136 species of 90 genera in 402 families ,presented by 1676 individuals, with the total basal area of 53.11 m occurred in the 5 hectare sample plots.The two leading families in terms of number of species were Euphorbiaceae and Lauraceae while according to the the total sum of importance values for families were Euphorbiaceae, Moraceae and Bignoniaceae.We recorded 19 species of Euphorbiaceae, constituting14.4% of the total species with the basal area of 39.4 % of the total in the three plots. Terminalia copelandii(Combretaceae) was the most prominent species occurring here and was one of the ten leading species. The species-area curves rose steadily up to an area of 1.0 hectare, with a very slight indication of levelling off at about 2 hectares, indicating high Heterogenity particulary in the permanently flooded swamp forest. Four largest trees were Artocarpus rotundatus (DBH = 100.50 cm) Chydenanthus excelsus (DBH = 92.50 cm), Haplophragma macrolobum (DBH = 83.00) and Anthocephalus chinensis (DBH= 75.10 cm).
ANALISIS VEGETASI DAN DEGRADASI JENIS TUMBUHAN HUT AN GAMBUT SETELAH KEBAKARAN DIKAWASAN TAMAN NASIONAL TANJUNG PUTING KALIMANTAN TENGAH Yusuf, Razali
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 | Full PDF (587.593 KB) | 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.
PENELITIAN EKOLOGI JENIS POHON DI KAWASAN HUTAN BULUNGAN, KABUPATEN BULUNGAN - KALIMANTAN TIMUR Yusuf, Razali
BERITA BIOLOGI Vol 6, No 6 (2003)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i6.1205

Abstract

Studied on species ecology was carried out especiaslly with composition and vegetation structure in mixed dipterocarp forest,Bulungan-East Kalimantan Province.Two sampling plots were set up in 2 selected sites.All trees (dbh>10cm) within each plot were measured, and their height was respectively estimated.The result showed that totally species number from 825 trees at 2 plots recorded 240 species, 127 genera dan 42 families and 33 species among them from family Dipterocarpaceae.That were 22 species meranti (Shorea spp.J, 4 species for kruing {Dipterocarpus caudiferus, D. stellatus, D. humeratus, D. hominophyllum), and some from genus Vatica (Vatica vinosa, V. rasak, V. sarawakensis), Hopea bullatifolia, Dryobalanops lanceolata and Parashorea parvifolia. Dipterocarpaceae,Euphorbiaceae and Myristicaceae were some families with have the most species number and some species were dominance representated the family that were Dipterocarpus caudiferus, Dryobalanops lanceolata,Coccoceras borneensis and Knema latifolia.
KEANEKARAGAMAN JENIS POHON PADA HUTAN TERGANGGU DI DAERAH KORIDOR TAMAN NASIONAL GUNUNG HALIMUN Yusuf, Razali
BERITA BIOLOGI Vol 7, No 1&2 (2004)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (557.557 KB) | DOI: 10.14203/beritabiologi.v7i1&2.1234

Abstract

A study on the disturbed forest in the corridor of Gunung Halimun National Park has been carried out in order to know the tree species diversity and species composition.The research located at the corridor area of Gn Halimun National Park around Purwabakti and Pulasari villages.The corridor area are roles as the bridge of flora between Salak mountain and Halimun mountain.The recorded tree species at 1 ha plot shows that from 441 individu was 69 species belong to 47 genera and 33 families.From 815 individu the recorded sapling 87 species belong to 68 genera in 40 families. Maesopsis eminii, is an introduced tree but in this study it was recorded as a very dominant species. Futhermore Lauraceae was reported as the biggest family with 9 species.Two species of Cyatheaceae, were encountered during the research, and this family namely Cyathea sp.and Cyathea contaminans has the biggest number of individu by having Family Importance Value (FIV) = 34.21 for tree and FIV = 42.11 for sapling. Fagaceae family was represented by the presence of Lithocarpus spicatus & Castanopsis gemelliflora, and it is as the next biggest number of individu 2 (FIV =31.66) and basal area is 2.7 m .
Co-Authors Purwaningsih -