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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 2,125 Documents
 135   136   137   138   139 
ASPEK EKOFISIOLOGI DALAM PENGELOLAAN DAN PELESTARIAN EBONI (Diospyros celebica Bakh.) Samuel A Paembonan
BERITA BIOLOGI Vol 6, No 2 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i2.1504

Abstract

Pengetahuan ekofisologi eboni penting dalam penerapan sistem silvikultur hutan alam karena setiap jenis mempunyai reaksi yang berbeda terhadap faktor lingkungan yang berbeda dan pada tahap yang berbeda pula.Penelitian ekofisiologi juga berperan dalam pengelolaan dan pelestarian eboni.Informasi tentang penyesuaian antara faktor fisiologi dan faktor lingkungan yang berpengaruh terhadap metoda pemeliharaan permudaan eboni yang tepat, baik di hutan alam maupun pada hutan tanaman dibahas dalam tulisan ini.Hasil akhir dari pemantapan metode ini dapat dijadikan bahan kajian lebih mendalam untuk menyusun pedoman teknis pemeliharaan permudaan alam eboni baik secara ex-situ maupun in-situ.Berdasar pada penelitian yang berhubungan dengan faktor lingkungan tumbuh eboni yang telah dilakukan, disarankan beberapa prioritas penelitian ekofisiologi.
AKTIVITAS CMC-ase KHAMIR Candida sp. YANG DIISOLASI DARI TANAH KEBUN BIOLOGI WAMENA, PAPUA Atit Kanti; I Made Sudiana
BERITA BIOLOGI Vol 6, No 5 (2003)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i5.1190

Abstract

Cellulolytic Candida sp.was isolated from Wamena, Papua.The strain was able to grow in media with carboxymethyl cellulose as a sole carbon source implying that the isolate produced 1-3 oc endo-gluconase.To study the effect of glucose and osmotic pressure on 0.1% glucose and 0.1% NaCl were augmented to CMC-contained media.Glucose augmentation affects cellulolytic activity of culture,probably due to higher biomass production in media. NaCl addition appear not to affect cellulolytic ability. Profile of pH also varied depend on the cultivation media. Maximum growth rate was achieved when glucose was added which was implying that glucose stimulate cell growth.
KONDISI VEGETASI DI KAWASAN HUTAN KEBUN RAYA BALIKPAPAN Syamsul Hidayat
BERITA BIOLOGI Vol 12, No 3 (2013)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v12i3.643

Abstract

Balikpapan Botanical Gardens (East Kalimantan) is an ex situ conservation area where some parts of its land is originated from the Sungai Wain Protection Forest. Most of the area had been burned in 1982 and 1998. For the development of botanical gardens, vegetation condition/status assessment in forest areas is needed. The study was conducted by sampling with nested plot. Ten observations transects, each consisting of five plots measuring 20 m x 20 m set at ten locations which were supposed to represent the community. Results of the study showed that the quality of the vegetation in general was low, with medium category for conservation index and less category for diversity index. The vegetation was dominated by pioneer species that were less in conservation value such as Macaranga spp., Melicope glabra (Blume) T.G.Hartley and Calicarpa sp. There were 56 individual trees of nine species of Dipterocarp family -which is the region's native plants- found within this area. As for seedling stage, it was also dominated by pioneer species and shrubs. Species enrichment through the development of botanical garden, are expected to increase the value of biodiversity and conservation index.
VARIASI INTRASPESIES Monascus purpureus DALAM BERBAGAI SAMPEL ANGKAK DARI JAWA TIMUR Nandang Suharna
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.v9i5.1996

Abstract

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.
FAUNA MOLUSKA DI PERAIRAN TEPI DANAU SINGKARAK SUMATERA BARAT KOMPOSISI DAN KEPADATAN JENISNYA RISTIYANTI M. MARWOTO; MACHFUDZ DJAJASASMITA
BERITA BIOLOGI Vol 3, No 6 (1986)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i6.1329

Abstract

RISTIYANTI. M. MARWOTO & M. DJAJASASMITA. 1986. Competition and population density of the molhiscan fauna in Lake Singkarak, West Sumatera. Berita Biologi 3(6): 293 - 296.A study of the competition and density of the molluscan fauna of coastal water in Lake Singkarak, West Sumatera, has been carried out in October 1982. The molluscs collection consisted of 4 thiarids (Brotia costula, Melanoides granifera, M. tuberculata and Thiara scabra), 2 planorbids (Gyraulus feunerborni and G. sumatranusj, 1 bulimid (Emmericiopsis lacustris) and 1 corbiculid clam (Corbicula moltkeana).The stony and sandy coastal 2 water is dominated by B. costula (59/0.09 m ) 2followed by C. molticeana'(32/0.09 m ), E. lacus- 2 2 tris (31/0.09 m ), M. tuberculata (21/0.09 m ) 2 and the other species 1 - 10/0.09 m .The water quality (temperature 27.7°C, pH 6.3, alkalinity 88.5 ppm and disolved oksigen 7.95) and food (detritus and periphyton) seems to be adequate to wpport the molluscan life.
PROTEIN TOKSININSEKTISIDAL DARI BAKTERI PATOGEN SERANGGA Photorhabdus luminescens HJ Alina Akhdiya; Etty Pratiwi; I Made Samudra
BERITA BIOLOGI Vol 8, No 6 (2007)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v8i6.828

Abstract

Photorhabdus luminescens HJ is an entomopathogenic bacterium that has a high toxicity against Tenebrio molitor larvae.Toxicity assay of crude extra cellular protein precipitated using ammonium sulphate showed that the highest toxin activity was found in 70 % saturation. Purification of the toxin using Hi Prep 16/60 Sephacryl S-200 HR column exhibited one fraction of toxic protein and three fractions of non-toxic protein. Mortality of T. molitor larvae treated with 19.2 nanogram of toxic fraction was up to 80%. Denatured protein analysis using sodium dodecyl sulphate-polyacrylamide gel electrophoresis revealed that the toxic fraction was composed of three proteins, which were 19.5, 42, and 66 kDa respectively. Based on toxin activity bioassay, this toxin type was an injectable toxin and presumably classified as Mcf toxin.
LUMUT SEJATI DI HUTAN ALAM PAMEUNGPEUK, TAMAN NASIONAL GUNUNG HALIMUN SALAK, JAWA BARAT Florentina Indah Windadri
BERITA BIOLOGI Vol 16, No 2 (2017)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v16i2.2302

Abstract

Halimun Salak National Park is one of the remaining conservation areas left in West Java. Research on diversity of Bryophytes had previously been conducted at  Halimun Mount, Kendeng Mount and  the lowland forest surrounding Cikaniki-Citalahab, while this present  study was aimed to  record the diversity of mosses at Pameungpeuk primary forest. There were 78 species  of mosses including in 47 genera and 20 families. Syrrhopodon spiculosus Hook. & Grev. was a dominant species in the research area. Twenty seven species were new record for Halimun Salak National Park, one of which (Rhizogonium lamii Reimers) was a new record for Java and seven species were new record for Indonesia.
TANAH DAN PENGEMBANGAN BUDIDAYA CENDANA (Scmtalum album L.) PROPINSINUSA TENGGARA TIMUR SB Silalahi
BERITA BIOLOGI Vol 5, No 5 (2001)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i5.1470

Abstract

Banyak aspek perlu dikaji dan dipertimbangkan dalam upaya pengembangan budidaya cendana di Nusa Tenggara Timur (NTT), antara lain aspek kesesuaian lahan dan lingkungan. Aspek hukum status dan kepemilikan tanah juga sangat penting karena di NTT dikenal dengan istilah "tanah suku" serta beberapa peraturan yang terkait dengan tanah seperti UU No. 5 Tahun 1960, UU No. 5 Tahun 1967 yang diperbaharui dengan UU No. 41 Tahun 1999, UU No. 24 Tahun 1992, UU No. 4 Tahun 1982 yang diperbaharui dengan UU No. 23 Tahun 1997, UU No. 11 Tahun 11967 dan UU No. 22 Tahun 1999. Dalam membuat perencanaan sistem pengembangan cendana, peta setiap desa/tanah suku yang terkena lokasi pengembangan perlu dibuat dengan Rencana Tata Ruang Desa, Kecamatan dan tidak menimbulkan  konflik dengan kepentingan lainnya misalnya petemakan. Peta tanah tersebut meliputi pemetaan penguasaan, pemilikan dan penguasaan tanah serta penggunaannya. Pengembangan cendana diharapkan dari awal melibatkan partisipasi masyarakat setempat sehingga pemeliharaan dalam jangka panjang akan lebih menguntungkan baik masyarakat maupun Pemerintah Daerah. Dalam pengembangan cendana sebagai komoditi andalan daerah masa kini dan masa mendatang, selain harus diperhatikan aspek kesesuaian lahan, ekologi dan hukum, aspek lain juga perlu dikaji yakni permodalan, sosial ekonomi dan budaya masyarakat setempat.
BEBERAPA ASPEK BIOLOGI Telenomus sp. (HYMENOPTERA: SCELIONIDAE) SEBAGAI PARASIT TELUR PENGGEREK KUNING PADI Scirpophaga incertulas (LEPIDOPTERA: PYRALIDAE) Very Gameriawati; Mohammad Amir
BERITA BIOLOGI Vol 5, No 2 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i2.1154

Abstract

Various biological aspects o/Telenomus sp.(Hymenoptera: Scelionidae) an eggs parasite of the rice stem borer Scirpophaga incertulas (Lepidoptera: Pyralidae) was conducted in the Pest Laboratory for Crop Institute, Bogor, Indonesia.The results showed that the parasite is solitary in habit and mainly live in eggs of the rice stem borer.The arfu Telenomus could maintain longer life span (3.4 days) in the cage and produced a large number of progenies (29.4 individuals) when they were given food of 10% honey solution compared to those which were given only water (2.1 days of life span, and 22.4 individual progenies).The parasite life span and the number of progenies were the least (1.8 days of life span, and 18.8 individual progenies) when they were treated without any food.The number of progeny was also the greatest when they were provided with one day old of stem borer eggs (45.87 individuals), while the number of progeny declined when they were provided with 2 days (36.93 individual progenies) and 3 days (24.87 individual progenies) old stem borer eggs respectively. Pairs of day old parasites are able to parasite more host eggs compared to that of successive days old parasites.The sex ratimf 2$ : 2$ produced more progenies compared to that with the sex ratio IS : 2$ and 2$ : lQ.Parthenogenetic reproduction in arfu Telenomus parasite being tested resulted in the male progenies only.
KERAGAMAN SUARA KODOK PURU BESAR {Phrynoidis aspera (Gravenhorst, 1829)} ASAL JAWA BARAT Hellen Kurniati
BERITA BIOLOGI Vol 12, No 1 (2013)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v12i1.517

Abstract

Giant River Toad {Phrynoidis aspera (Gravenhorst, 1829)} is a largest generalist toad that is able to adapt to a variety of habitats and elevations. The complete calls of Giant River Toad had not been published before. To know all of sound characters of the toad, a total of five individuals males P. aspera vocalization were recorded on 30 October 2010 (1 individual; air temperature: 23.1°C; water temperature: 18.1°C) by using an Audio Technica AT875R microphone, the sound was recorded on a Fostex FR 2LE in WAV format; and on 22-24 September 2011 (4 individuals; air temperature 21.0°C-23.4°C; water temperature 21.6°C-22.0°C) in Curug Nangka, Mount Salak foot hill,West Java by using PCM-M10 Sony Recorder. The toad has four types of call: (1) Call type 1, consists of impulses without harmonic and average band width is 317.44 Hertz and average of amplitude is 40.43; (2) Call type 2, consists of pure tone with many sub-harmonics, average range frequency is 1420.28 Hertz and average of amplitude is 42.67; (3) Call type 3, consists of impulses and pure tone with two weak harmonics and average band width is 373.81 Hertz and average of amplitude is 48.19; (4) Call type 4, consists of impulses without harmonic and average band width is 792.62 Hertz and average of amplitude is 51.01. Based on the number of calls that were recorded of five individuals from the Mount Salak foot hill, call type 4 is its major call (common advertisement call), but the three others call types are minor calls.

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