A5042071411- Geology and Paleoclimatology Research
- Isotope Analysis in Ecology
- Geological formations and processes
- Groundwater and Isotope Geochemistry
- Marine and environmental studies
- Pacific and Southeast Asian Studies
- Metabolomics and Mass Spectrometry Studies
- Pleistocene-Era Hominins and Archaeology
- Archaeology and ancient environmental studies
- Flood Risk Assessment and Management
- Coastal wetland ecosystem dynamics
- Oceanographic and Atmospheric Processes
- Aquatic Ecosystems and Phytoplankton Dynamics
- Hydrology and Drought Analysis
- Agricultural safety and regulations
- Ecology, Conservation, and Geographical Studies
- Hydrological Forecasting Using AI
- Geophysics and Gravity Measurements
- Geological Studies and Exploration
- Geological Modeling and Analysis
- Plant Physiology and Cultivation Studies
- Agriculture and Rural Development Research
- Agriculture and Biological Studies
- Tree-ring climate responses
- Geochemistry and Elemental Analysis
Universität Hamburg
2013-2021
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...
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...
Abstract An unresolved issue in the vegetation ecology of Indian subcontinent is whether its savannas, characterized by relatively open formations deciduous trees C 4 -grass dominated understories, are natural or anthropogenic. Historically, these ecosystems have widely been regarded as anthropogenic-derived, degraded descendants forests. Despite recent work showing that modern savannas fall within established bioclimatic envelopes extant elsewhere, debate persists, at least part because...
We report the results of our investigations on catchment area, surface sediments, and hydrology monsoonal Lonar Lake, central India. Our indicate that lake is currently stratified with an anoxic bottom layer, there a spatial heterogeneity in sensitivity sediment parameters to different environmental processes. In shallow (0-5 m) near shore oxic-suboxic environments lithogenic terrestrial organic content high spatially variable, organics show degradation oxic part. Due aerial exposure...
We report the results of our investigations on catchment area, lake surface sediments, and hydrology high altitude alpine Tso Moriri Lake, NW Himalayas (India). Our indicate that is currently alkaline, thermally stratified with an oxic bottom layer. Results from hydrochemistry isotopic composi- tion (δ 18 O δD) inflowing streams waters show Lake evaporative contributions both westerly source (snow melt) Indian summer monsoon precipitation. Geochemical mineralogical sediments reveal presence...