A5075448122- Geology and Paleoclimatology Research
- Geological formations and processes
- Isotope Analysis in Ecology
- Microplastics and Plastic Pollution
- Archaeology and ancient environmental studies
- Marine and environmental studies
- Marine and coastal ecosystems
- Tree-ring climate responses
- Pleistocene-Era Hominins and Archaeology
- Recycling and Waste Management Techniques
- Toxic Organic Pollutants Impact
- Effects and risks of endocrine disrupting chemicals
- Marine animal studies overview
- Climate variability and models
- Geochemistry and Geologic Mapping
- Ichthyology and Marine Biology
- Groundwater and Isotope Geochemistry
- Hydrology and Watershed Management Studies
- Marine and fisheries research
- Landslides and related hazards
- Aquatic Ecosystems and Phytoplankton Dynamics
- Metabolomics and Mass Spectrometry Studies
- Maritime and Coastal Archaeology
- Flood Risk Assessment and Management
- earthquake and tectonic studies
Indian Institute of Science Education and Research Mohali
2017-2024
Zoological Survey of India
2024
University of Calcutta
2024
Indian Institute of Science Education and Research Kolkata
2014-2019
GFZ Helmholtz Centre for Geosciences
2009-2015
University of Potsdam
2011-2013
Central Marine Fisheries Research Institute
2009
ABSTRACT We have undertaken petrographic, mineralogical, geochemical and isotopic investigations on carbonate minerals found within a 10‐m‐long core from Lonar Lake, central India, with the aim of evaluating their potential as palaeoenvironmental proxies. The encompasses entire Holocene is first well‐dated high‐resolution record India. While calcite and/or aragonite were throughout core, mineral gaylussite was only in two specific intervals (4630–3890 2040–560 cal BP). Hydrochemical isotope...
Microplastic (MP) contamination in freshwater systems is a prevalent and persistent environmental issue, yet their occurrence distribution remain poorly constrained. The present study examines the MPs abundance sediment water samples factors controlling Manasbal Lake, north-western (NW) Himalaya. Additionally, investigates relationship between heavy metals of sediment, as well potential interactions. counts lake surface varied from 840 nkg−1 to 4020 13 nL−1 89 nL−1, respectively. Lake...
Lonar Lake is a eutrophic, saline soda lake with permanently anoxic deep water. The high pH and deoxygenation result in very elevated δ 15 N of suspended particulate matter (SPM) sediments due to denitrification pH‐related loss gaseous ammonium. SPM sinking particles are predominantly aquatic origin, whereas surface mixed terrestrial plant planktonic source. An indicator degradation intensity was derived from principal component analysis the spectral distribution amino acids named index...
Banni, located in the arid western India, is one of largest tropical grasslands Asian continent. The net primary production this grassland ecosystem currently mediated by precipitation during Indian summer monsoon (ISM). However, timing expansion and its link to intensity monsoonal remains enigmatic due paucity datasets. major objective study understand changes vegetation for last 4600 cal yr BP using hydrogen carbon isotopic composition n-alkanes (δDn-alkane δ13Cn-alkane) measured from two...
The research aims to provide a comprehensive understanding of Organic matter (OM) through molecular characterization within the spatial distribution freshwater lake system. sedimentary biomarkers, n-alkane indices were used for determining OM inputs from terrestrial and aquatic sources systemShift in along with Paq , ACL CPI values analyzed integration grain size data assessment origin processes affecting preservation OM.This approach is crucial gaining insights how distributed, preserved,...
Long-term trends of heavy metal pollution in aquatic systems are significant for assessing the influence human activities and adopting relevant management strategies. In this study, we present analyses metals (iron, manganese, copper, zinc, cobalt, nickel, lead) 210Pb/137Cs dated sediment cores from Ahansar lake (Kashmir Himalaya, India) covering a time span last 200 years. Additionally, relative water quality compilation historical data (since 1983 CE) were performed to understand long-term...
The global apprehension regarding the ubiquitous presence of microplastics (MPs) and their associated health risks underscore a significant challenge. However, our understanding on occurrence characteristics this emerging class pollutants in different environmental compartments remains limited. For instance, despite housing approximately 20-25% population, evidence atmospheric MPs Indian Subcontinent is exceedingly rare. Hence, we for first-time present data depositional flux, chemical...