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INDONESIA
JURNAL BIOLOGI INDONESIA
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : 08544425     EISSN : 2338834X     DOI : -
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 847 Documents
 66   67   68   69   70 
POTENSI SERAPAN KARBONDIOKSIDA (CO2) PADA BEBERAPA JENIS TUMBUHAN LANTAI HUTAN DARI SUKU ARACEAE DI TAMAN NASIONAL GUNUNG HALIMUN- SALAK, JAWA BARAT Mansur, Muhammad
JURNAL BIOLOGI INDONESIA Vol 8, No 2 (2012): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v8i2.3050

Abstract

Potential Absorption of Carbon Dioxide (CO2) in Some Plant species on The Forest Floor From Family of Araceae in The Gunung Halimun-Salak National Park, West Java. Study of carbon dioxide (CO2) absorption in some plant species on the forest floor from Family of Araceae conducted in the Gunung Halimun-Salak National Park, Resort Cidahu, West Java, on September 2011. The survey was conducted to inventory the species of Araceae that exist atthe study site. Thirty samples of the five species of Araceae has been chosen as the target of photosynthesis measurement. Six individuals from each species were measured as replicates,in which young and old leaves were measured from each individual. The results show that five species of Araceae are found in forest floor, namely; Schismatoglottis calyptrata, Schismatoglottis rupestris, Alocasia longiloba, Arisaema filiforme and Colocasia esculenta.Colocasia esculenta has a higher CO2 absorption rate (14, 288 ?mol/m2/s) than Arisaema filiforme (8,614 ?mol/m2/s), Alocasia longiloba (7,599 ?mol/m2/s), Schismatoglottis rupestris(7,078 mol/m2/s) and Schismatoglottis calyptrata (5,260 ?mol/m2/s). In general, old leaves of all species have higher chlorophyll contain and CO2 absorption rate than young leaves. Theoptimum photosynthetic rate in Schismatoglottis calyptrata occurred at 10:00 am (8,457 ?mol/m2/s) and the lowest at 16:00 pm (4,262 ?mol/m2/s).Keywords: CO2 absorption, Araceae, Gunung Halimun-Salak National Park.
THE ROLE OF COPROPHAGOUS BEETLES ON DUNG DECOMPOSITION AND ENHANCEMENT OF SOIL FERTILITY: EFFECT OF BODY SIZE, SPECIES DIVERSITY AND BIOMASS Shahabuddin, Shahabuddin; Manuwoto, Sjafrida; Hidayat, Purnama; Noerdjito, Woro A.; Schulze, Christian H.
JURNAL BIOLOGI INDONESIA Vol 5, No 2 (2008): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v5i2.3192

Abstract

ABSTRAKPeran Kumbang Koprofagus pada Dekomposisi Kotoran Hewan dan Kesuburan Tanah:Pengaruh Ukuran Tubuh, Keragaman Species dan Biomasa. Penelitian ini bertujuan untukmenganalisis pengaruh keragaman species, ukuran dan biomassa kumbang koprofagus dalammerombak kotoran hewan dan meningkatkan kesuburan tanah. Percobaan dilakukanmenggunakan Rancangan Acak Lengkap dengan perlakuan jumlah dan panjang tubuh spesieskumbang koprofagus. Peubah tergantung yang diamati adalah persentase kotoran yangterdekomposisi dan kadar bahan organik serta N,P,K total tanah sebagai indikator kesuburantanah. Hasil penelitian menunjukkan bahwa persentase kotoran hewan yang terdekomposisilebih dipengaruhi oleh ukuran dan biomassa kumbang yang terlibat dibandingkan denganjumlah spesies. Persentase kotoran yang terdekomposisi berkorelasi positif dengan ukurankumbang koprofagus. Kadar N,P,K total tanah meningkat mengikuti jumlah kotoran hewanyang terdekomposisi yang mengindikasikan bahwa aktifitas perombakan kotoran hewan olehkumbang koprofagus berpengaruh positif terhadap kesuburan tanah.Kata kunci: Kumbang koprofagus, komposisi spesies, dekomposisi, kesuburan tanah
PROTEIN DOMAIN ANNOTATION OF PLASMODIUM SPP. CIRCUMSPOROZOITE PROTEIN (CSP) USING HIDDEN MARKOV MODEL-BASED TOOLS Parikesit, Arli Aditya; Utomo, Didik Huswo; Karimah, Nihayatul
JURNAL BIOLOGI INDONESIA Vol 14, No 2 (2018): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v14i2.3737

Abstract

ABSTRACTPlasmodium sp. Circumsporozoite Protein (CSP) has a crucial role in sporozoite function and hepatocyte invasion. The basic understanding of this protein can reveal the mechanism of action. Protein domain annotation could determine the functional region of the specific protein. This study aimed is to identify the conserved and functional region of circumsporozoite protein using Hidden Markov Model approach. Three samples of CSP was retrieved from UniProt database; Circumsporozoite protein from Plasmodium vivax (P08677), Circumsporozoite protein from Plasmodium malariae (P13815), and Circumsporozoite protein from Plasmodium knowlesi (P02894). All sequenced was reviewed and could be used for further analysis. Multiple Sequences alignment (MSA) was used for analyzing the conserved region. CLUSTAL X software employed to run the MSA of circumsporozoite protein. Protein homology was clustered using MEGA 7.0, and domain annotation was done by the SUPERFAMILY hidden Markov models. The result showed that Circumsporozoite Protein has two specific conserved regions among species. This conserved region indicates the similar function and takes a vital role in their life cycle. Plasmodium  knowlesi and Plasmodium vivax had more similar sequence than Plasmodium malariae. The clustering result based on Circumsporozoite Protein indicates that Plasmodium malariae may have distinct infection mode to the host. The CSP was identified has one domain in C-terminus. Domain family of  CSP was TSP-1 type 1 repeat with high reliability. It can be concluded that conserved domain of Circumsporozoite Protein could reveal its critical role in Malaria Disease. To this end, CSP could be a potential candidate for vaccine development. Keywords: Circumsporozoite, conserved domain, Plasmodium spp, TSP-1 type 1 repeat.  
KAJIAN GEN AMELY GAJAH SUMATRA (ELEPHAS MAXIMUS SUMATRANUS) Zein, Moch Syamsul Arifin; Sulandari, Sri
JURNAL BIOLOGI INDONESIA Vol 12, No 1 (2016): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v12i1.2319

Abstract

Sumatran elephants (Elephas maximus sumatranus) is endemic of Asian elephants in Indonesia, an endangered animal andlisted on Appendix I of CITES. Therefore, information on the status and distribution of the population of Sumatranelephants, including the distribution of genetic diversity is necessary to facilitate the development of adequate conservationand management strategies. The purpose of this research was to use Amely gene to trace paternal lineage of Sumatranelephants based on Y chromosome variation. A total of 22 blood samples of male Sumatran elephants were collected inSumatra (Way Kambas , Seblat, Bentayan, Sugihan, dan Bukit Serelo Lahat). We amplified intronic regions of the Ylinkedgene (Amely) using published primer sequences (Amely-R2 and Amely-F2) and sequenced. Sequences generatedfrom this study, aligned with reference sequences available in the GenBank, namely Elephas maximus (AY823325.1),Loxodonta Africana (AY 823320.1; AY 823321.1), Loxodonta cyclotis (AY823322.1; AY8233223.1, AY 823324.1).Neighbour Joining tree of Sumatran elephants was performed using MEGA version 5.2.2. The analysis results of 22-maleSumatran elephants, indicating that no diversity (no variation) of the Y chromosome obtained among the population ofSumatran elephants. Sumatran and Asian elephants have the same haplotypes. Further results confirmed that the savannaelephants (Loxodonta africana ) and the forest elephants (Loxodonta cyclotis ) formed two (2) separate clades, which showstwo different species. Results obtained in this study may help to design future conservation programs for the species.Keywords: Sumatran elephant, Amely gene, Y chromosome, Genbank, haplotype
EMISI GAS DINITROGEN OKSIDA DARI TANAH SAWAH TADAH HUJAN YANG DIBERI JERAMI PADI DAN BAHAN PENGHAMBAT NITRIFIKASI Wihardjaka, A.
JURNAL BIOLOGI INDONESIA Vol 6, No 2 (2010): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v6i2.3160

Abstract

ABSTRACTNitrous Oxide Emission from Rainfed Lowland Rice Soils through Applications of Rice Strawand Nitrification Inhibitor Materials. Alternate wet-dry of soil condition under rainfed lowlandsystem influence on source and sink dynamics of green house gases. Lowland rice soil is oneof antropogenic sources of nitrous oxide (N2O) emission produced by microbiologicalnitrification-denitrification mediated processes. Attempt to increase soil productivity in lowlandrice system by organic amendment is predicted to stimulate nitrous oxide production. Theincrease of N2O production in lowland rice could be suppressed by using nitrification inhibitormaterials. A field experiment was conducted in rainfed lowland rice during 2009 dry season. Theobjective was to study interaction of rice straw application and nitrification inhibitor materialson nitrous oxide emission from rainfed lowland rice. Experiment was arranged using factorialrandomizes block design with three replicates and treatment of rice straw application (withoutrice straw, fresh straw, composting straw) and inhibitor nitrification materials (without inhibitornitrification, neemcake, carbofuran). Interaction of rice straw and nitrification inhibitor materialsdecreased significantly N2O emission from lowland rice soil. Nitrous oxide emission in plotwithout rice straw was higher than in plot treated with neither fresh rice straw nor compostingstraw. Application neemcake combined with composting straw emitted lowest nitrous oxidewith flux of 72 g N2O ha-1 season-1, whereas the highest N2O emission was found in plot withoutnitrification inhibitor materials and rice straw with flux of 454 g N2O ha-1 season-1. Comparedwith treatment of without nitrification inhibitor, application of neemcake and carbofuran couldsuppress nitrous oxide emission of 48.6 and 41.3 %, respectively.Key words : nitrous oxide emission, rainfed lowland, rice straw, nitrification inhibitors
KECENDERUNGAN DAN FAKTOR PENYEBAB DEFORESTASI DI WAY PEMERIHAN, TAMAN NASIONAL BUKIT BARISAN SELATAN, LAMPUNG BARAT Suyadi, Suyadi; Gaveau, David Luc Andre
JURNAL BIOLOGI INDONESIA Vol 4, No 1 (2006): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v4i1.3275

Abstract

ABSTRACTTrend and Causal Factor of Deforestation in Way Pemerihan, Bukit BarisanSelatan National Park, West Lampung. Deforestation of low land tropical forestis one of the greatest threats to biodiversity in Bukit Barisan Selatan National Park(BBSNP), where this area is the third-largest protected area on Sumatra. Our study is thefirst in BBSNP as integrate between remote sensing and socio-economic survey to demonstratethat the area and rate of forest loss in Way Pemerihan (Cawangaro andSumbersari). The data demonstrated that deforestation activity has been started since1965 in Cawangaro and 1977 in Sumbersari. Forest cover of 1.232ha had already beenlost by deforestation activity, i.e: 579 ha in Cawangaro and 653ha in Sumbersari. Forestloss is increasingly by average rate of 1.2%/year (0.28m2/minute) in the meantime averagerate of regeneration only 0.09%/year. The highest increased of deforestation hasoccurred after politics reformation in 1998. The result of socio-economic survey demonstratedtwo causal factor include internal factor and external factor. Internal factor that islandlessness, price of outside BBSNP land is relatively high and not productive becauseof that low production. External factor of the processes which drives farmer to deforestationis social gap to illegal logging activity, declined of BBSNP forest control and lawenforcement capacity, and boundary conflict between BBSNP with traditional lands.Political reformation forms is the basis for increase external factor.Keywords: Forest loss, satellite imagery, landscape, Illegal logging
RESOLUSI KERANCUAN PERKIRAAN LUAS DAN LAJU DEFORESTASI HUTAN MANGROVE DI INDONESIA Suyadi, Suyadi
JURNAL BIOLOGI INDONESIA Vol 9, No 2 (2013): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v9i2.177

Abstract

TULISAN PENDEK
SMALL MAMMALS DIVERSITY IN KAWAH RATU RESORT, MOUNT SALAK, WEST JAWA, INDONESIA Maharadatunkamsi, Maharadatunkamsi
JURNAL BIOLOGI INDONESIA Vol 8, No 1 (2012): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v8i1.3073

Abstract

Keanekaragaman Mamalia Kecil di Resor Kawah Ratu, Gunung Salak, Jawa Barat, Indonesia. Dalam rangka inventarisasi sumber daya hayati, telah dilakukan penelitian keanekaragaman mamalia kecil di kawasan Resor Kawah Ratu, Gunung Salak, Jawa Barat. Tujuan dari penelitian ini adalah untuk mengungkapkan jenis-jenis hewan mamalia kecil yang dapat dipakai sebagai masukan dalam rangka pengelolaan kawasan konservasi ini. Penelitian ini dilakukan dengan cara penangkapan menggunakan perangkap dan jaring kabut, serta observasi langsung pada tiga habitat utama yaitu hutan primer, hutan sekunder dan kawasan yang terganggu. Pengamatanpada masing-masing habitat dilakukan selama 4 hari. Sebanyak 60 perangkap kawat dan 20 ember jebakan sumuran digunakan untuk menginventarisasi hewan mamalia kecil darat. Empat buah jaring kabut digunakan untuk mengamati mamalia yang bergerak melalui udara. Dalam survei ini berhasil didokumentasikan sebanyak 179 ekor mamalia kecil yang terdiri dari 14 jenis. Hasil penelitian ini menunjukkan bahwa hutan primer mempunyai komponen penyusunkomunitas mamalia kecil yang berbeda dari kawasan terganggu dan hutan sekunder. Sedangkan habitat dengan tingkat keanekaragaman tinggi dijumpai pada kawasan terganggu dan hutan sekunder. Hal ini diduga karena kedua habitat ini menyediakan variasi pakan yang lebih beragam dibanding hutan primer.Kata kunci: keanekaragaman, mamalia kecil, hutan, kawasan terganggu
KEANEKARAGAMAN MAMALIA BESAR BERDASARKAN KETINGGIAN TEMPAT DI TAMAN NASIONAL GUNUNG CIREMAI Gunawan, Gunawan; Kartono, Agus Priyono; Maryanto, Ibnu
JURNAL BIOLOGI INDONESIA Vol 4, No 5 (2008): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v4i5.3216

Abstract

ABSTRACTMammalian Diversity Based on Altitudinal Range at Gunung Ciremai NationalPark. Gunung Ciremai was declared as national park in 2004. As a new national park,the mammalian data is lacking especially about mammalian diversity based on vegetationcomposition and altitudinal in Gunung Ciremai. The observation was conducted in 4habitats, such as: pine forest, lowland forest, mountain forest and subalpine forest elevationfrom 500 to 3078 m asl. Number of species found are 9 (7 species was through directobservation and 2 specis by indirect observation). Species richness index is 1,04; speciesdiversity index is 1,00 and species evennes index is 0,52. Relationship between mammaliandiversity and vegetation composition, that is sapling density, poles density and tree densityshowing significant value just for sapling density (r2= 0,501 dan p= 0,044). Relationshipbetween mammalian diversity and altitudinal show significant value (r2= 0,881 and P=0,025).Key words: mammalian diversity, habitat, vegetation composition and altitudinal
EVALUASI PERTUMBUHAN STEVIA REBAUDIANA BERT. TETRAPLOID SECARA IN VITRO DAN DI LAPANG UNTUK PRODUKSI STEVIOSIDA DAN REBAUDIOSIDA-A Adabiyah, Rifatul; Ratnadewi, Diah; Ermayanti, Tri Muji
JURNAL BIOLOGI INDONESIA Vol 15, No 2 (2019): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v15i2.3809

Abstract

ABSTRACTGenetic improvement through tetraploid induction of Stevia rebaudiana is important in order to increase the sweetener content, steviol glycoside. Tetraploid plants of several species after induction with colchicine and oryzalin have higher growth and secondary metabolite contents compared to the diploid plants. This study was aimed to evaluate growth as well as their stevioside and Reb-A content of S. rebaudiana tetraploid and diploid (control) plants cultured in vitro and grown in the field after acclimation process. This study used 3 tetraploid clones, namely B60.3H8, P1T22, P3T5, and 1 diploid clone as control. Shoot tips were cultured on MS medium without addition of plant growth regulators for 6 weeks, then they were acclimated in a greenhouse, followed by planting them in the field. Growth of shoot culture, plantlets in the greenhouse and plants in the field were observed. Analysis of stevioside and Reb-A was done by HPLC. The results showed that plantlets of diploid clone had higher in vitro growth and survival rate in the greenhouse than that of tetraploids. Tetraploid clone P1T22 had similar growth as diploid plants, but higher than the growth of tetraploid B60.3H8 and P3T5. Fresh and dry weights of B60.3H8 was similar with diploid plants, but higher than P1T22 and P3T5 tetraploid clones. The highest level of stevioside and Rebaudiosida-A was found in tetraploid B60.3H8 clone, the lowest was found in the diploid plants. The highest ratio of stevioside : Reb-A was found at B60.3H8 tetraploid clone.  Keywords: Stevia rebaudiana, in vitro, field, growth, Stevioside, Rebaudioside-A, tetraploid  

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