A5060948509- Water Quality and Pollution Assessment
- Aquatic Ecosystems and Phytoplankton Dynamics
- Fish Ecology and Management Studies
- Diatoms and Algae Research
- Water resources management and optimization
- Freshwater macroinvertebrate diversity and ecology
- Groundwater and Watershed Analysis
- Fish Biology and Ecology Studies
- Groundwater and Isotope Geochemistry
- Fish biology, ecology, and behavior
- Hydrology and Watershed Management Studies
- Aquatic Ecosystems and Biodiversity
- Water-Energy-Food Nexus Studies
- Child Nutrition and Water Access
- Invertebrate Taxonomy and Ecology
- Marine and coastal ecosystems
- Heavy metals in environment
- Aquatic Invertebrate Ecology and Behavior
- Agricultural Economics and Practices
- Rangeland Management and Livestock Ecology
- Entrepreneurship Studies and Influences
- Climate change impacts on agriculture
- Cryospheric studies and observations
- Microbial Applications in Construction Materials
- Saffron Plant Research Studies
Kathmandu University
2015-2024
National Institute of Technology Meghalaya
2024
Ministry of Agriculture and Forests
2024
Kathmandu College of Management
2023
Abstract High altitude ecosystems have important natural ecological functions but are under increasing impacts from human activities and climate change. A detailed analysis of the water chemistry Lake Rara, a high mountain lake in western Nepal, was carried out October 2015 April 2016. total 31 samples were collected. Major ions (Ca 2+ , Mg Na + K SO 4 2− NO 3 − Cl ) analysed by ion chromatography. Si PO 3− following standard protocols. Conductivity, pH, dissolved solids (TDS), turbidity...
Jüttner I., Krammer K., Van de Vijver B., Tuji A., Simkhada Gurung S., Sharma C. and Cox E.J. 2010. Oricymba (Cymbellales, Bacillariophyceae), a new cymbelloid genus three species from the Nepalese Himalaya. Phycologia 49: 407–423. DOI: 10.2216/09-77.1A is described with its type based on Cymbella japonica Reichelt. In addition, are Himalaya: O. subaequalis, latirotundata subovalis. The has slightly dorsiventral or almost symmetrical valves polar raphe endings deflected to dorsal side. It...
Interpreting long-term variability in mountain stream ecosystems is challenging where potential causes such as climate change and altered land-use act simultaneously. The scarcity of historical data also limits research opportunity, especially at low latitudes. Here we assess the macroinvertebrate fauna 12 Himalayan streams Nepal covering an altitudinal gradient from 1500 to 3900 m asl using 1992, 2022 2023. We aimed to: 1) compare richness community composition over three decades short-term...
Subclinical mastitis is a significant health concern in dairy cows, leading to decreased milk production and quality. This study aimed determine the prevalence of subclinical lactating cows from Bharatpur Municipality, Chitwan, Nepal, assess antibiotic resistance patterns pathogens isolated. A total 200 samples 50 (Jersey, Holstein, crossbreeds) were tested using California Mastitis Test (CMT), with 30 (15%) testing positive. The was higher older those parity, Jersey showing an increasing...
High altitude lakes are very sensitive to climate change due their small catchment area, limited vegetation cover, surface water with low nutrients, and thin soil bedrock weathering rates. The present study was focused on high Himalayan Lake Gosainkunda, situated at an elevation of 4300 m in the Langtang National Park, carried out during post- monsoon season (October) 2010. main aim assess quality quantitatively considering anthropogenic as well natural impacts lake. samples were collected...
Freshwater fish are crucial components of aquatic ecosystems that affected by a range anthropogenic activities. bodies in Nepal under different threats affecting biodiversity. Inter-basin water transfer (IBWT) involving damming and diversion from one river basin to another is considered major threat Impact assessment such projects include generation baseline information on biotic abiotic variables. The aim this study was generate diversity the glacial-fed (Bheri) spring-fed (Babai) rivers...
A detailed analytical study of the physico-chemical parameters melt water draining from glaciers Langtang Valley with an elevation ranging 1395 m a s l to 4200 in Rasuwa district, Nepal was carried out order seasonal and altitudinal variation hydro-chemistry along River glacial melts Lirung Khimsung Glaciers. The during 6 - 10 April 30 June-3 July, 2014 at 11 sites. total 22 composite samples were collected. concentration cations anions found Ca2+ > K+ Na+ Mg2+ , respectively. Significant...
Climate change can have significant impacts on crop yields and food security. This study assessed the linkages between climate to obtain a better understanding drivers of The was conducted in Pasagaun village Lamjung District Nepal, where household surveys focus group discussions (FGDs) were used collect data including cultivation, irrigation facilities, adaptation strategies. Moreover, (temperature precipitation) from 1992 2020 collected Khudi Bazar meteorological station yield obtained...
Abstract Appropriate irrigation water quality is essential for maintaining soil properties. This study investigates numerous physicochemical properties of in three Himalayan valleys northern Pakistan, receiving from different sources. A total 36 samples (3 replicates four points at each site) were randomly collected and analyzed following standard laboratory techniques. The results revealed that most the parameters within permissible limits as specified by FAO, USEPA, WWF agriculture water....
This review describes the current status of freshwater fish diversity, their IUCN categories and threats to fauna in Nepal. The systems country are known harbor over 220 species, thereby indicating a rich ichthyofaunal diversity. However, this number varies from author author. Cyprinidae is most common dominant taxon. A total 15 endemic exotic species have been reported. 34 listed under Red List threatened categories. Major include damming pollution. Fish diversity studies mainly focused on...
The present study was conducted in two Ramsar sites, Lake Rara and Ghodaghodi, of the western Nepal covering pre-monsoon post-monsoon seasons 2019 to find out dynamics hydrochemistry. A total 11 major ions (Na+, K+, Ca2+, Mg2+, NH4+, F-, Cl-, SO42-, NO3-, NO2-, HCO3-) along with six on-site parameters (temperature, pH, electrical conductivity, dissolved solids, oxygen, turbidity) were sampled replicates from 18 sites 13 Ghodaghodi. Major analyzed using ion chromatography including field...
The concentration and composition of different salts in natural water bodies determine the quality for various purposes. This study assesses two mid-mountain lentic bodies, Lake Phewa Kulekhani Reservoir. For this purpose, selected physico-chemical parameters along with major ions such as HCO3-, SO42-, PO43-, NO3-, Cl-, Ca2+, Mg2+, Na+, K+, NH4+ were analyzed. Major analyzed using ion chromatography, anions by DX-600 cations Dionex ISC-2500 chromatographs. sources determined Gibbs diagram,...
Inter Basin Water Transfer (IBWT) is a water resource stressor globally with negative environmental impacts. This study describes the major ions and hydrochemistry of first ever ongoing IBWT from snow-fed Bheri River to rain-fed Babai in Western Nepal. samples 10 sites, five each river system, were collected HDPE bottles for (Ca^(2+), Mg^(2+), Na^+, K^+, HCO_3^-, Cl^-, SO_4^(2-), NO_3^-, CO_3^(2-)) along estimation pH, temperature conductivity encompassing winter, spring, summer, autumn...
This research investigates the heavy metals (Zn, Cd, Cu, and Pb) concentration in water, sediments, macrophytes Ghodaghodi Lake during winter summer seasons of 2019 to find out bioaccumulation phytoremediation potential locally available macrophytes. An atomic absorption spectrophotometer with an acid digestion method was used for analysis metals. The mean were order Zn > Cu Pb Cd water sediments. concentrations significantly higher (0.79±0.71, 12.99±3.16, 11.39±6.88 mg/g, respectively)...
As part of a study on the diatom flora Gokyo Valley, Everest National Park, Nepal, eleven species Cymbopleura (Bacillariophyta), including two new species, gokyoensis jüttner et Van de VijVer sp.nov.and emoda sp.nov., were investigated using light and electron microscopy.Some taxa could not be identified with certainty currently available literature due to small differences in valve dimensions, raphe structure striation patterns.It remains unclear whether they represent or original...
Climate change impacts are likely to affect the agricultural production leading further food insecurity. In this context, trend of cereal with climate variables was studied in order understand linkages between and crop productivity. The study conducted three districts Sagarmatha zone, namely Solukhumbu (mountain region), Okhaldhunga (hill region) Saptari (Terai representing ecological zones Nepal. A household survey (295 households), focus group discussions key informant interviews were used...
During the first study of diverse diatom assemblages in Rara Lake, largest lake Nepal, 11 species Gomphonema, belonging to six morphological groups, and Gomphoneis qii could be investigated using light scanning electron microscopy. Five new Gomphonema are described: subodhii, parasundaense, raraense, parapygmaeum himalayaense. Known included sublaticollum, cf. capitatum, minusculum, lateripunctatum, tergestinum (the only one previously recorded from Nepal) vibrio. The history latter name is...
Abstract Purpose Earthworms play a critical role in soil ecosystem functions through the cycling of organic matter and nutrients. However, some land uses or environmental conditions are more favorable habitats for them than others. Thus, objectives this study were to evaluate prevalence earthworm density its relationship properties. Methods The was conducted three districts (Wangdue Phodrang, Chhukha Dagana) Bhutan (organic fields - OrgF, conventional ConF natural vegetation NatV) under...
Four new species are described in the genus Odontidium from Himalaya Nepal, and Garhwal Kumaon regions India using light electron microscopy. We compare Himalayan taxa to recently European Alps Macedonia. In addition we illustrate some specimens of Diatoma rupestris, a China, Nepalese Himalaya.