Prof. Jitendra Pandey

Prof. Jitendra Pandey
Banaras Hindu University | BHU · Department of Botany

Ph.D.

About

188
Publications
41,608
Reads
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2,511
Citations
Introduction
Prof. Jitendra Pandey is currently working at the Department of Botany, Banaras Hindu University. His current research includes identifying human driven ecological shifts in the Ganga River from head water to estuaries continuum and approaches to recovery and management.
Additional affiliations
November 2005 - present
Institute of Science, Banaras Hindu University, Varanasi-221005, India
Position
  • Professor
November 2005 - present
Institute of Science, Banaras Hindu University, Varanasi-221005, India
Position
  • Professor
Education
September 1988 - December 1992
Banaras Hindu University
Field of study
  • Air pollution
July 1984 - June 1986
Banaras Hindu University
Field of study
  • Ecology/Botany

Publications

Publications (188)
Chapter
From over five decades, there has been a rapid increase in pollutant concentration in the Ganga River. Much of the debates about the rising pollution in the rivers have been focused on urban sewage input and its associated increase in biological oxygen demand (BOD). Here, we present an overview of explicit multifactor causation, ecosystem-level shi...
Article
Full-text available
The Himalayan foothills in northern India form one of the distinct eco-climatic regions of the world which affect plant communities. This study aims to analyse tree community assemblage along with associated abiotic variables in the tropical moist deciduous forests of Dudhwa National Park (DNP) in the Terai region. The cluster and non-metric multid...
Article
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This study evaluated the relationships between metal pollution and carbon production at six sites along a 285 km length of the Ganga River. Metal contaminated sites did show a significant reduction in microbial biomass, substrate induced respiration, fluorescein diacetate hydrolytic assay (FDAase) and β-D-glucosidase. Concordantly, despite a high c...
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There has been considerable debate on how atmospheric deposition (AD) in the watershed alters the supply of dissolved organic carbon (DOC) to river and coastal ecosystems. Here we show how AD-N and –P in the Ganga River Basin (GRB) drives the delivery of DOC. We conducted three sets of studies, a 3 year (2016–2018) in situ trial, a 5 year (2014–201...
Article
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Being pivotal to nutrient mobilization and conservation, microbial communities are indispensible for sustenance of forest ecosystem. The pattern and drivers of active soil microbial communities remain less explored in tropical dry deciduous forests. The present study was conducted during two annual cycles at three forest sites (hilltop, middle and...
Article
We investigated the effect of hypoxic-anoxic range of dissolved oxygen (DO) on metal release/bioavailability at sediment-water interface (SWI) in the Ganga River. Here, we consider eight sites in the main river stem along 518 km; sixty sites downstream two point sources and two tributary confluences covering 630 km; and an incubation experiment to...
Article
Multiple human perturbations in the large rivers often cause habitat fragmentation creating patches of unpredictable structural and functional attributes. The resilience has been largely neglected in riverine studies, despite its pivotal importance in ecosystem recovery. We expect that a shift in sub-habitat conditions along a river transect subjec...
Article
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We investigated the distribution of Zn, Cu, Ni, Pb, Cr, and Cd in water, sediment, and two dietary fish (an omnivore, Labeo rohita and a benthic carnivore, Clarias batrachus) and potential health risk to human consumers during summer low flow (2017–2018) at 28 sites across 7 tributary confluences of the Ganga River. We selected Devprayag, an upper...
Article
The ecological responses of riverine ecosystems are strongly influenced by anthropogenic perturbations. However, high-resolution quantitative shifts in the 'ecosystem responses' to multiple human pressures in riverine ecosystems are not well understood. Given that, in most of the anthropogenically impacted rivers, eutrophy and metal pollution occur...
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We investigated the distribution of different fractions of eight heavy metals (Zn, Cr, Cu, Pb, Cd, Ni, Fe, and Mn) in the bed sediment of the Ganga River. The study was conducted during summer low flow (March to June 2017) considering a 285-km middle stretch of the Ganga River between the Allahabad upstream and the Varanasi downstream. To assess th...
Article
Ganga, a river of global significance, is under increasing pressure from excessive release of carbon and nutrients. We conducted the first detailed watershed-scale study to assess water quality status and possible drivers in different segments of the Ganga River. For this, we analyzed 24 water quality variables from March 2016 to February 2018, at...
Article
Full-text available
We investigated eight heavy metals (Cr, Cd, Cu, Ni, Pb, Zn, Mn, and Fe) in water and bed sediment at 9 study sites along with 2320 km stretch of the Ganga River. Principal component analysis (PCA) and indices such as geo-accumulation index (Igeo), contamination factor (CF), enrichment factor (EF), pollution indices, and sediment quality guidelines...
Article
In lotic systems, the hydrologic forcing together with structural and functional complexities make it difficult to predict how the river ecosystem will respond to human perturbations. We conducted two sets of studies selecting two segments; a 518 km main river stem, and two point source trajectories at the Ganga River during summer low flow of thre...
Article
Dissolved oxygen (DO) plays a major role in sustaining aquatic communities; its concentration and regulatory determinants are considered a key node predicting eutrophy, ecosystem health, and biogeochemical feedbacks. Here we report the status of dissolved oxygen deficit (DOD; hypoxia), and its mechanistic links with sediment oxygen demand (SOD) in...
Article
Ganga, the largest river system in India, has fundamental ecological and social values; and has a large number of monitoring and assessment programs, but is rarely considered to explore the ecological response indicator(s) to identify anthropogenic environmental impacts. This study was targeted to identify a sensitive response indicator that can be...
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The Himalayan Terai forests are the major habitat for a variety of terrestrial biodiversity, with distinct extents of ecosystems, abundance and distribution of species and coverage of protected areas. This lowland region is mainly characterised by tall grasslands, scrub savannah, Sal forests, wetlands, and swamps. The Terai eco-region, shared by In...
Article
This study was designed to test whether the atmospheric deposition (AD) significantly influences gross primary productivity (GPP) and dissolved organic carbon (DOC) build-up in the Ganga River. We collected data for three consecutive years (2012–2014) along with 37 km river stretch with respect to AD-input of carbon, nutrients, and surface runoff c...
Article
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Hydrocarbon-Selective catalytic reduction (HC-SCR) is one of the potential methods to remove NOx emissions from diesel engine, lean burn petrol engines and natural gas engines exhaust. Ag/Al2O3 is a good catalyst for HC-SCR of NOx under lean-burn conditions. Further, addition of small amount of H2 is effective for enhancing HC-SCR activ-ity. This e...
Article
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The pattern of N/P/Si stoichiometry, although an important driver regulating river ecology, has received limited research attention for Ganga River. We investigated shifts in N/P/Si stoichiometry and ecological nutrient limitation as influenced by Varanasi urban core along a 37-km-long stretch of Ganga River. We also assessed the trophic status of...
Article
The present study was conducted from March 2016 to February 2017 to investigate human-driven shifts in N:P:Si stoichiometry along a 2320 km stretch of the Ganga River. Concentrations of nutrients (NO3⁻, NH4⁺ and PO4³⁻), dissolved organic carbon (DOC), and dissolved silica (DSi) were measured in river water and in surface runoff to explore possible...
Article
We investigated the possible drivers of the N:P stoichiometric shift and its relationship with micro-algal production of transparent exopolymeric particles (TEP) along a 35 km gradient of the Ganga River. The objective was to evaluate if the trade-off between N:P stoichiometry and production of TEP helps in maintaining water quality of the river. M...
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The streams and rivers are considered hotspots of CO2 exchange; and representative direct CO2 emission measurements are essential for a correct regional estimate. We measured CO2 emission flux at 15 sites at land–water interface downstream of a point source during low flow for three consecutive months for the year 2017. The general range of CO2 eff...
Article
We studied the extracellular enzyme activity (EEA) in the riverbed sediment along a 518km gradient of the Ganga River receiving carbon and nutrient load from varied human sources. Also, we tested, together with substrate-driven stimulation, if the heavy metal accumulated in the sediment inhibits enzyme activities. Because pristine values are not av...
Article
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An understanding of ongoing changes in salinity and nutrient status, as influenced by anthropogenic forcing factors, is important for integrated lake basin management (ILBM) and conservation of water resources in dry tropical regions. This study analysed a range of water quality attributes, including salinity, nitrate (NO3⁻), ammonia (NH4⁺), phosph...
Article
Short-term variations in phosphorus (P) concentrations must be considered while assessing the long-term changes in trophic status and estimating the P load and export. Furthermore, given the challenges of conventional monitoring of river systems, a sediment-specific biomonitoring tool may be more successful inferring P related human controls. In th...
Article
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We studied the relationships among diatom biodiversity, transparent exopolymeric particles (TEP) and water quality at the confluences of four tributaries of River Ganga (Yamuna, Assi, Varuna and Gomti) during low flow. Diatom abundance changed with concurrent shifts in water chemistry with dominance– diversity curves markedly skewed from a log-norm...
Article
We studied the relationships among diatom biodiversity, transparent exopolymeric particles (TEP) and water quality at the confluences of four tributaries of River Ganga (Yamuna, Assi, Varuna and Gomti) during low flow. Diatom abundance changed with concurrent shifts in water chemistry with dominance- diversity curves markedly skewed from a log-norm...
Article
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An idea of an exotic route of reactive calcination (RC) of a precursor (co-precipitated basic carbonates of nickel and cobalt) for the synthesis of highly active NiCo2O4−δ spinel catalyst (Cat-R) for oxidation of CO and HCs emissions from LPG fueled vehicles is reported in the present paper. The route involved feed of a low concentration of chemica...
Article
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To determine the possible contributions of point and non-point sources to carbon and nutrient loading in the Ganga River, we analyzed N, P, and organic carbon (OC) in the atmospheric deposits, surface runoff, and in the river along a 37-km stretch from 2013 to 2015. We also assessed the trophic status of the river as influenced by such sources of n...
Article
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Carbon, nitrogen and phosphorus inputs through atmospheric deposition, surface runoff and point sources were measured in the Ganga River along a gradient of increasing human pressure. Productivity variables (chlorophyll a, gross primary productivity, biogenic silica and autotrophic index) and heterotrophy (respiration, substrate induced respiration...
Chapter
Increasing demand for safe and contamination free agricultural produce has led organic farming to emerge as a global alternative of chemical fertilizer based agriculture. India is one of the leading countries for certified organic produce and maize is one among the five major cereal crops in the country. Maize is a staple food crop, which serves as...
Article
Anthropogenic releases in large regulated rivers are overriding their organic load assimilation capacity and ability to rejuvenate. Effective light penetration in such water bodies are constrained by trade-off between organic load and benthic oxygen supply. We investigated the impact of light climate, as influenced by dissolved organic carbon (DOC)...
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The status of changing atmosphere-land-water linkages is not properly addressed in India despite recent global attention stressing its importance. The present study was an effort to investigate whether atmospheric deposition (AD) of nutrients, in addition to other sources enhances runoff nutrient flushing and primary productivity in fresh water lak...
Article
The temporal phenology of leaf bud bursting, leaf initiation, leaf maturation, leaf fall, flower initiation, fruit initiation and fruit fall was recorded for eight tree species (Ficus hispida, F. squamosa, Mallotus nudiflorus, M. philippensis, Shorea robusta, Schleichera oleosa, Pongamia pinnata and Terminalia arjuna) in the tropical moist deciduou...
Article
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Human-induced N:P:Si imbalances and associated shifts in nutrient limitation in Ganga River remain relatively uncertain despite recent studies highlighting its importance. The goal of this watershed-scale study was to investigate the nutrient-limiting status of Ganga River, as influenced by atmospheric deposition (AD) and catchment runoff together...
Article
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The present investigation aimed at documenting medicinally important species of trees used by Tharu tribe in the Himalayan Terai region of India. Out of 204 tree species belonging to 143 genera and 50 families reported in this study, uses of 148 species have been recorded from this region for the first time. Twenty nine leguminous species belonging...
Article
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Currently, the study of plant phenology under the light of different climatic parameters is an impressive tool for climate change assessment studies. Thus, a number of studies have been performed globally to understand the interrelationship between these biotic (phenophases) and abiotic (temperature, precipitation, etc.) indices. These studies clea...
Article
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The atmosphere–land–water connectivity of dissolved organic carbon (DOC) is not altogether accounted in major rivers of India despite recent researches highlighting its importance. We studied the coupled effect of atmospheric deposition (AD) and local land use on DOC buildup in Ganga River for a period of 6 years. The AD-OC input increased consiste...
Article
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Bottom sediment in a river often acts as a sink and indicator of changes in water column and magnitude of anthropogenic influences through air and watersheds. Heavy metal concentration in sediments of Ganga River was studied along a 37-km stretch to assess whether there is a significant difference between sites situated upstream and downstream of V...
Article
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The study catalogues a sum of 278 tree species belonging to 185 genera and 57 families from the Terai region of Uttar Pradesh. The family Fabaceae has been found to exhibit the highest generic and species diversity with 23 genera and 44 species. The genus Ficus of Moraceae has been observed the largest with 15 species. About 50% species exhibit dec...
Article
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A phytosociological assessment was done in Terai-Bhabar region of the central Himalaya to understand the current status of a monotypic genus Indopiptadenia. Identification of different forest communities within the region was also accomplished. Cluster analysis and PCA revealed five forest communities (i.e., sal miscellaneous forest, sal dominant f...
Article
Full-text available
A phytosociological assessment was done in Terai-Bhabar region of the central Himalaya to understand the current status of a monotypic genus Indopiptadenia. Identification of different forest communities within the region was also accomplished. Cluster analysis and PCA revealed five forest communities (i.e., sal miscellaneous forest, sal dominant f...
Conference Paper
Full-text available
In the present study the status of forests of Dudhwa National Park (DNP) has been explored. It is situated between 28º 22' to 28º 41' N and 80º 30' to 80º 57' E with an elevation ranges from 150 to 180 m in Lakhimpur Kheri, Uttar Pradesh. It is a good representative of tropical moist deciduous forest of Terai region and comprises approximate 490 km...
Article
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Nutrient loading to surface waters has increased over recent decades while silicon loading has remained relatively constant or declined. A shift in N: P: Si stoichiometric ratios due to anthropogenic influences may become a feature of changing biogeochemistry in surface waters. We studied the changing state of NO3-, NH4 +, PO43-, Si4+, dissolved or...
Article
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In order to assess the changing pattern of N: P: Si stoichiometry and associated shift in the abundance of diatoms, we analysed DO, BOD, NO 3
Chapter
Most of the cities in Indian cities show inefficiencies in environmentally sound and sustainable waste management. An audit on the performance of municipal solid waste (MSW) management undertaken by the Comptroller and Auditor General (CAG) of India in 2007 revealed that no states have completed a comprehensive data about waste volumes and composit...
Article
Transparent exopolymer particles (TEP), generated from excretion products of microalgae, trigger flocculation of diatoms and sinking of organic matter. Investigations along 797 km stretch of Ganga River indicated that TEP declined with increasing N:P stoichiometric ratio downstream. The TEP showed positive relationship with chlorophyll a (R(2) = 0....
Article
Full-text available
Terrestrial contribution of dissolved organic carbon (DOC) to riverine carbon transport remains relatively uncertain despite recent research highlighting its importance. Here we present data on changing state of atmosphere–land–water transfer and associated shift in DOC build-up in Ganga River (India) for a period of 6 years (March, 2007–February,...
Article
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Landfills are now considered to be among the largest anthropogenic source of green house gas (GHG) emission in the world. Methane and carbon dioxide emission rates were studied at two landfill sites along the Ganges river at Varanasi (U.P.), India. Chemical characteristics of leachates emerging from both the landfills were also studied. Overall, th...
Article
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Uttar Pradesh, one of the most populated states of India along international border of Nepal, contributes only about 3% of total forest & tree cover of the country as the major parts of the area is covered by agriculture lands and human populations. The forests are quite fragmented and facing severe anthropogenic pressure in many parts. To protect...