Rajendra Bhandari

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Verified

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• Doctor of Philosophy
• Lecturer in Aquatic Ecosystems at IHE Delft Institute for Water Education

The Ganga River exhibits elevated concentrations of dissolved strontium (Sr) and a higher radiogenic Sr (87Sr/86Sr) among global rivers, which impacts oceanic Sr composition. This has implications for understanding weathering and sediment flux into open oceans. The Nepal Himalayan section is a significant part of the upstream Ganga River catchment....

The Rhynie Chert (Lower Devonian, Scotland) hosts a remarkably well-preserved early terrestrial ecosystem. Organisms including plants, fungi, arthropods, and bacteria were rapidly silicified due to inundation by silica-rich hot spring fluids. Exceptional molecular preservation has been noted by many authors, including some of the oldest evidence of...

The rising unpredictability in the food supply chain in many parts of the world is related to soil loss and poor agricultural output. The Revised Universal Soil Loss Equation (RUSLE), widely used for estimating soil loss, was applied in the western mid-hills in Nepal, with steep slopes and fragile geology. This region is at high risk for rapid soil...

Despite its small area (ca. 595,000 km2), the Himalayan region transfers disproportionally high amounts of sediments and organic matter (OM) through a network of rivers into the oceanic sink. Such a high contribution is due to the synergistic effects of active tectonics, variable precipitation, and steep slopes aided by human perturbations on exhum...

The Himalayan rivers yield the most significant flux of continental sediments into the ocean. Organic matter (OM) transported by these rivers provides a peek at the influence of diverse geological terrains, soil types, vegetation, and climate on carbon cycling within a narrow boundary. We analyzed suspended and bedload sediments from four Himalayan...

Himalayan rivers have high radiogenic Sr and actively contribute to the oceanic Sr budget. Previous studies from Nepal either analyzed cores retrieved from the Bay of Bengal or sampled large rivers during the dry season. Hence, sampling during monsoons draining major lithologies in the mountainous terrain is required to assess these monsoon-dominat...

The Nepal Himalayas is the source of many glacial and spring-fed river systems crisscrossing the mountainous terrain. There is an increasing recognition of small mountain rivers (SMRs) to have a significant combined export of dissolved and particulate organic carbon to the global carbon flux. We analyzed fluvial sediments from two SMRs and compared...

We conducted a detailed study in comparing physico-chemical parameters of glacier melt water between two years (2016 & 2019) in upstream sites with an elevation ranging from 4100 m to 3550 m above sea level of Ponkar glacier, Manang district, Nepal. We conducted onsite testing of physical parameter like pH, electrical conductivity, total dissolved...

A study of the melt water draining from Ponkar glacier, Bhimthang Valley, Nepal was performed to determine various physico-chemical parameters prevailing along 16 sampling sites consisting of moraine dammed, Ponkar Lake at 4100 metres to downstream glaciated stream at 1930 metre. Temperature, pH and Electrical conductivity were recorded on site and...

Tinau is a perennial rain-fed river which traverses the Mahabharat and the Siwalik ranges to reach the Terai in western Nepal. The river is affected by a number of stressors including riverbed extraction, damming, agricultural runoff and effluents from urban area including Butwal city. The study focused on select physical-chemical water quality cha...

This research work records the baseline inventory of selected ions in running waters of Gokyo Valley, Nepal and tries to establish relationship of these ions' concentration with elevation gradient. Among these selected hydro-chemical parameters, the average concentration of Ca 2+ , Mg 2+ , 2 4 SO − and total silica were determined to be 3.25 (±2.02...

An assessment of impacts of climate change on women is done in Mahadevsthan VDC, Kavre. Mahadevsthan VDC is situated about 7 km north from Zero Kilo, Arniko highway. The study is done with meteorological data analysis and questionnaire survey. The analysis of thirty one year long data of temperature and precipitation revealed the existence of clima...