Journal of Himalayan Earth Sciences最新文献

Pralad Yonzon, colleague, friend, conservationist, student of Red Panda Pralad Yonzon，同事，朋友，环保主义者，小熊猫的学生

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Journal of Himalayan Earth Sciences Pub Date : 2011-12-02 DOI: 10.3126/HJS.V7I9.7109

M. Hunter

引用次数: 0

The Himalayan wanderer: Conservationist, scholar and friend 喜马拉雅流浪者:环保主义者、学者和朋友

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Journal of Himalayan Earth Sciences Pub Date : 2011-12-02 DOI: 10.3126/HJS.V7I9.7112

J. Heinen

引用次数: 0

Dr Pralad Yonzon (1951–2011): In memoriam

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Journal of Himalayan Earth Sciences Pub Date : 2011-12-02 DOI: 10.3126/hjs.v7i9.7108

Pitambar Sharma

引用次数: 0

Dr Pralad Yonzon: Guru of field methodology Pralad Yonzon博士:现场方法论的大师

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Journal of Himalayan Earth Sciences Pub Date : 2011-12-02 DOI: 10.3126/HJS.V7I9.7111

D. Bhuju

引用次数: 0

Trematode cercariae infections in freshwater snails of Chitwan district, central Nepal 尼泊尔中部奇旺地区淡水蜗牛的吸虫尾蚴感染

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Journal of Himalayan Earth Sciences Pub Date : 2011-12-01 DOI: 10.3126/HJS.V7I9.2183

R. Devkota, P. Budha, Ranjana Gupta

{"title":"Trematode cercariae infections in freshwater snails of Chitwan district, central Nepal","authors":"R. Devkota, P. Budha, Ranjana Gupta","doi":"10.3126/HJS.V7I9.2183","DOIUrl":"https://doi.org/10.3126/HJS.V7I9.2183","url":null,"abstract":"Because Nepal has been virtually unexplored with respect to its trematode fauna, we sampled freshwater snails from grazing swamps, lakes, rivers, swamp forests, and temporary ponds in the Chitwan district of central Nepal between July and October 2008. Altogether we screened 1,448 individuals of nine freshwater snail species (Bellamya bengalensis, Gabbia orcula, Gyraulus euphraticus, Indoplanorbis exustus, Lymnaea luteola, Melanoides tuberculata, Pila globosa, Thiara granifera and Thiara lineata) for shedding cercariae. A total of 4.3% (N=62) infected snails were found, distributed among the snail species as follows (B. bengalensis - 1, G. orcula - 11, G. euphraticus - 8, I. exustus - 39, L. luteola - 2 and T. granifera - 1). Collectively, six morphologically distinguishable types of trematode cercariae were found: amphistomes, brevifurcate-apharyngeate (likely mammalian schistosomes), clinostome, gymnocephalus (likely fasciolid), longifurcate-pharyngeate and xiphidiocercaria. I. exustus had the highest prevalence of trematode infection, and harbored all the noted cercarial types except gymnocephalus cercariae. One double infection (xiphidiocercaria and longifurcate-pharyngeate cercaria) was found in this snail. Amphistome cercariae were common in G. euphraticus, G. orcula, and I. exustus. The highest prevalence of infection (38.3%) was recorded among snails collected from temporary ponds. DOI: http://dx.doi.org/10.3126/hjs.v7i9.2183 Himalayan Journal of Sciences Vol.7 Issue 9 2011 pp.9-14","PeriodicalId":42873,"journal":{"name":"Journal of Himalayan Earth Sciences","volume":"32 1","pages":"9-14"},"PeriodicalIF":0.4,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74990519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 28

How best to support livelihoods of blacksmiths with minimum impact on forest products 如何在对森林产品影响最小的情况下最好地支持铁匠的生计

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Journal of Himalayan Earth Sciences Pub Date : 2011-12-01 DOI: 10.3126/HJS.V7I9.2338

R. Rijal, R. Chetri, R. Rozzi

引用次数: 0

A remote sensing-based approach for water accounting in the East Rapti River Basin, Nepal 尼泊尔东拉普提河流域基于遥感的水资源核算方法

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Journal of Himalayan Earth Sciences Pub Date : 2011-12-01 DOI: 10.3126/HJS.V7I9.5785

R. Shilpakar, W. Bastiaanssen, D. Molden

{"title":"A remote sensing-based approach for water accounting in the East Rapti River Basin, Nepal","authors":"R. Shilpakar, W. Bastiaanssen, D. Molden","doi":"10.3126/HJS.V7I9.5785","DOIUrl":"https://doi.org/10.3126/HJS.V7I9.5785","url":null,"abstract":"Accurate estimates of evapotranspiration across different land uses are a major challenge in the process of understanding water availability and uses in a river basin. This study demonstrated a remote sensing-based procedure for accurately generating evaporative depletion and runoff in mountainous areas using Landsat ETM+ images combined with standard hydro-meteorological data. The data was used as a key input into the International Water Management Institute (IWMI)’s water accounting procedure to understand how water is now used, and opportunities for improvements in the future. We found a higher annual actual evapotranspiration from the riparian forest than from irrigated agriculture in the East Rapti River basin of Nepal. Another important finding of our study is that simple rainfall surplus can be a good predictor of river flow at an ungagged site of the East Rapti River basin. The water accounting analysis revealed that there is the potential for further development of water resources in the East Rapti River basin as only 59% of the total available water is depleted. A critical analysis of social and ecological flow requirements downstream is necessary before any development of water resources upstream. This study successfully demonstrated that the key inputs required for evaluating and monitoring the overall water resources conditions in a mountainous river basin can be computed from satellite data with a minimal support from ground information.DOI: http://dx.doi.org/10.3126/hjs.v7i9.5785 Himalayan Journal of Sciences Vol.7 Issue 9 2011 pp.15-30","PeriodicalId":42873,"journal":{"name":"Journal of Himalayan Earth Sciences","volume":"123 1","pages":"15-30"},"PeriodicalIF":0.4,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88465203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Malaxis biaurita (Lindley) Kuntze (Orchidaceae): a new record for Nepal 尼泊尔兰科Malaxis biaurita (Lindley) Kuntze:新记录

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Journal of Himalayan Earth Sciences Pub Date : 2011-06-28 DOI: 10.3126/HJS.V6I8.1804

B. B. Raskoti, R. Ale

引用次数: 1

Microbial biomass and activity in high elevation (>5100 meters) soils from the Annapurna and Sagarmatha regions of the Nepalese Himalayas 尼泊尔喜马拉雅山脉安纳普尔纳和萨加玛塔地区高海拔(>5100米)土壤中的微生物生物量和活性

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Journal of Himalayan Earth Sciences Pub Date : 2011-06-28 DOI: 10.3126/HJS.V6I8.2303

A. King, D. Karki, L. Nagy, A. Racoviteanu, S. K. Schmidt, EcoScience Scotland

引用次数: 18

Optimization of RAPD-PCR conditions for the study of genetic diversity in Nepal’s Swertia chirayita (Roxb. Ex Fleming) H. Karst 尼泊尔獐牙菜遗传多样性研究的RAPD-PCR条件优化。(弗莱明)喀斯特

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Journal of Himalayan Earth Sciences Pub Date : 2011-06-28 DOI: 10.3126/HJS.V6I8.2699

S. Shrestha, Jaishree Sijapati, N. Rana, Diwa Malla, Prabha Regmi, B. B. Raskoti

{"title":"Optimization of RAPD-PCR conditions for the study of genetic diversity in Nepal’s Swertia chirayita (Roxb. Ex Fleming) H. Karst","authors":"S. Shrestha, Jaishree Sijapati, N. Rana, Diwa Malla, Prabha Regmi, B. B. Raskoti","doi":"10.3126/HJS.V6I8.2699","DOIUrl":"https://doi.org/10.3126/HJS.V6I8.2699","url":null,"abstract":"Of the 30 species (including five varieties) of the genus Swertia in Nepal, nine have been reported to possess medicinal properties. Among these, S. chirayita is the most valuable species, with high demand in domestic and international markets. Nepal’s S. chirayita and related species are being recklessly exploited for commercial purposes. Two problems that have emerged with this lucrative market are (a) adulteration and fraudulent labeling of S. chirayita , and (b) depletion of S. chirayita and allied species from their natural habitats. To address the problem of adulteration and conservation, we studied molecular genetic diversity in S. chirayita populations and developed a molecular diagnostic tool for the purposes of authentication. We studied intra-specific genetic diversity in S. chirayita using Polymerase Chain Reaction (PCR)-based Random Amplified Polymorphic DNA (RAPD) technique. As a preliminary step, we identified optimal RAPD-PCR reaction and cycling conditions by varying PCR reaction parameters such as concentration of template DNA, MgCl 2 , dNTPs, primer, Taq DNA polymerase and RAPD-PCR programs. The optimized PCR reaction and cycling conditions were then used in subsequent RAPD profiling experiments for the study of genetic diversity within S. chirayita populations from various geographical locations. Genetic diversity characterization of S. chirayita populations at the molecular level would furnish information with significant applications in the conservation and sustainable utilization of S. chirayita and its allied species in Nepal. Key words: Polymerase Chain Reaction, Random Amplified Polymorphic DNA, DNA fingerprinting, genetic diversity DOI: http://dx.doi.org/10.3126/hjs.v6i8.2699 Himalayan Journal of Sciences Vol.6 Issue 8 2010 pp.35-40","PeriodicalId":42873,"journal":{"name":"Journal of Himalayan Earth Sciences","volume":"137 1","pages":"35-40"},"PeriodicalIF":0.4,"publicationDate":"2011-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86574425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5