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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Biospecies BIOTROPIA - The Southeast Asian Journal of Tropical Biology Buletin Kebun Raya BERITA BIOLOGI JURNAL BIOLOGI INDONESIA Reinwardtia Jurnal Integritas Serasan Sekundang
Joko Ridho Witono
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Immunology & microbiology Social Sciences Veterinary

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Journal : JURNAL BIOLOGI INDONESIA

 1 
Rediscovered of Gnetum gnemon var. tenerum Markgr. in Kalimantan Astuti, Inggit Puji; Witono, Joko Ridho
JURNAL BIOLOGI INDONESIA Vol 12, No 2 (2016): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v12i2.2900

Abstract

SHORT COMMUNICATIONRediscovered of Gnetum gnemon var. tenerum Markgr. in Kalimantan
Populasi dan Kesesuaian Habitat Langkap (Arenga obtusifolia Mart.) di Cagar Alam Leuweung Sancang, Jawa Barat Usmadi, Didi; Hikmat, Agus; Witono, Joko Ridho; Prasetyo, Lilik Budi
JURNAL BIOLOGI INDONESIA Vol 11, No 2 (2015): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1307.549 KB) | DOI: 10.14203/jbi.v11i2.2194

Abstract

ABSTRACTThe growth and regeneration of langkap in natural habitat is very fast and has invasive tendencies. The aim of study was to analyze the population and population structure of langkap in Leuweung Sancang Nature Reserve, and build spatial models of habitat suitability langkap in Leuweung Sancang Nature Reserve. Data were collected using a sampling method with a number of plots along the transect line. Langkap has become the dominant species in Leuweung Sancang Nature Reserve on saplings and pole with population structure shows an normally structure population. Analysis of spatial modelling on habitat suitability of langkap through binary logistic regression with independent variables in the form of the Forest Canopy Density (FCD), slope, distance from the river and Normalized Difference Moisture Index (NDMI) has been able to predict habitat suitability of langkap in Leuweung Sancang Nature Reserve, i.e. 61,10% of the Leuweung Sancang Nature Reserve suitable as habitat langkap and 38,90% of the Leuweung Sancang Nature Reserve is not suitable as habitat langkap. Keywords: Langkap, Arenga obtusifolia, habitat suitability, spatial modeling, Leuweung Sancang Nature Reserve. 
POPULASI DAN KESESUAIAN HABITAT LANGKAP (ARENGA OBTUSIFOLIA MART.) DI CAGAR ALAM LEUWEUNG SANCANG, JAWA BARAT Usmadi, Didi; Hikmat, Agus; Witono, Joko Ridho; Prasetyo, Lilik Budi
JURNAL BIOLOGI INDONESIA Vol 11, No 2 (2015): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v11i2.2194

Abstract

ABSTRACTThe growth and regeneration of langkap in natural habitat is very fast and has invasive tendencies. The aim of study was to analyze the population and population structure of langkap in Leuweung Sancang Nature Reserve, and build spatial models of habitat suitability langkap in Leuweung Sancang Nature Reserve. Data were collected using a sampling method with a number of plots along the transect line. Langkap has become the dominant species in Leuweung Sancang Nature Reserve on saplings and pole with population structure shows an normally structure population. Analysis of spatial modelling on habitat suitability of langkap through binary logistic regression with independent variables in the form of the Forest Canopy Density (FCD), slope, distance from the river and Normalized Difference Moisture Index (NDMI) has been able to predict habitat suitability of langkap in Leuweung Sancang Nature Reserve, i.e. 61,10% of the Leuweung Sancang Nature Reserve suitable as habitat langkap and 38,90% of the Leuweung Sancang Nature Reserve is not suitable as habitat langkap. Keywords: Langkap, Arenga obtusifolia, habitat suitability, spatial modeling, Leuweung Sancang Nature Reserve. 
REDISCOVERED OF GNETUM GNEMON VAR. TENERUM MARKGR. IN KALIMANTAN Astuti, Inggit Puji; Mar'atus, Saniyatun; Witono, Joko Ridho
JURNAL BIOLOGI INDONESIA Vol 12, No 2 (2016): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v12i2.2900

Abstract

SHORT COMMUNICATIONRediscovered of Gnetum gnemon var. tenerum Markgr. in Kalimantan
Co-Authors Ade Adriadi Agus Hikmat alex sumadijaya Ary PRIHARDHYANTO Keim Danang Wahyu Purnomo Didi Usmadi, Didi Farid Kuswantoro, Farid HIMMAH RUSTIAMI I PUTU GEDE P. DAMAYANTO Ina Erlinawati Inggit Puji Astuti Kondo, Katsuhiko LILIK BUDIPRASETYO Lulut D. Sulistyaningsih Mahat Magandhi Mar'atus, Saniyatun Marlina Ardiyani Marsanda, Firda Dwi Muhamad Syukur Mustaid Siregar Ni Putu Sri Asih R. Hendrian RAHMI YUNIANTI Rayhanissa Rondo, Katsuhiko Rosniati Apriani Risna Sri Wahyuni Syarifah Iis Aisyah Yayan Wahyu Candra Kusuma Yuzammi Zulkarnaen Zulkarnaen