A5081635981- Geology and Paleoclimatology Research
- Marine and environmental studies
- Pleistocene-Era Hominins and Archaeology
- Aeolian processes and effects
- Plant Water Relations and Carbon Dynamics
- Geological formations and processes
- Atmospheric and Environmental Gas Dynamics
- Geological Formations and Processes Exploration
- Geological and Geophysical Studies Worldwide
- Archaeology and ancient environmental studies
- Climate variability and models
- Landslides and related hazards
- Soil and Environmental Studies
- Ancient and Medieval Archaeology Studies
- Forest ecology and management
- Tree-ring climate responses
- Archaeological and Historical Studies
- Geochemistry and Elemental Analysis
- Cryospheric studies and observations
- Ecology and Vegetation Dynamics Studies
- Forensic Anthropology and Bioarchaeology Studies
- Archaeological and Geological Studies
- Geological and Geochemical Analysis
- Heavy metals in environment
- earthquake and tectonic studies
University of Liverpool
2021-2025
University of Oxford
2010-2022
Oxford Brookes University
2020
Royal Holloway University of London
2017
University of York
2014
UK Centre for Ecology & Hydrology
2010-2011
With one of the largest watersheds in Europe, draining complex geological terrains within Alps, Bohemian Massif, Carpathians, Dinarides, and Balkan Mountains, Danube River valley has long been linked to formation thick loess deposits, particularly Middle Lower basins. However, uncertainty over provenance loess-palaeosol sequences along impacts our understanding sediment generation mechanisms hinders interpretation paleoenvironmental proxies preserved loess. To date, most studies...
Abstract. We present results from a study of canopy-atmosphere fluxes carbon dioxide 2007 to 2009 above site in Wytham Woods, an ancient temperate broadleaved deciduous forest southern England. Gap-filled net ecosystem exchange (NEE) data were partitioned into gross primary productivity (GPP) and respiration (Re) analysed on daily, monthly annual timescales. Over the continuous 24 month period GPP was estimated be 21.1 Mg C ha−1 yr−1 Re 19.8 yr−1; (NEP) 1.2 yr−1. These estimates compared...
Abstract Loess profiles along the Danube River provide a record of long-term Quaternary dust (loess) deposition in central-eastern Europe. Here, Sr–Nd isotopic data from four loess-palaeosol (47 samples) spanning last two-glacial-interglacial cycles are presented. The compositions generated by this study compared with bedrock and sedimentary samples Europe North Africa to decipher sources sediment. results demonstrate that over 300 ka alluvial plains (which themselves sourced surrounding...
The Tagus Basin, located in the central Iberian Peninsula and shared by Spain Portugal, represents a pivotal region for understanding interplay between paleo-environmental processes past human living adaption. River, longest Peninsula, originates from transition of Cenozoic basins an endorheic drainage system to exorheic flowing into Atlantic Ocean Plio-Pleistocene (Solè Sabaris, 1951; Vaudour, 1979; Silva et al., 1988; Pérez-González, 1994; Cunha 2008;...
Abstract The Chinese Loess Plateau, the world’s largest and oldest loess record, preserves evidence of Asia’s long-term dust source dynamics, but there is uncertainty over deposits. Recent single-grain detrital zircon U-Pb age analysis has progressed this issue, debates remain about changes, generation interpretation data. To address this, we analyze different groupings new existing datasets from Plateau potential sources. We also present results a first high resolution sampling, multi-proxy...
Abstract Loess paleoenvironmental reconstructions on regional to supra-regional scales have recently gained much attention. Geochemistry comparisons in relation reference datasets, such as the Upper Continental Crust (UCC) data, furthered our understanding of climatic and geomorphological conditions under which terrestrial sites developed. However, UCC data differs from loess, thereby obscuring important features, existing “average loess” datasets also are not sufficient for modern...
ABSTRACT While there are numerous thick loess–palaeosol sequences preserved across the Carpathian Basin, well dated sites that provide terrestrial palaeoenvironmental records extending beyond last glacial–interglacial cycle scarce. Robust chronologies essential for correlations of loess with other long‐term Quaternary and to further understanding palaeoenvironment climate this important region 125 ka. Here a new geochronology based on 13 post‐infrared infrared stimulated luminescence ages...
Despite numerous palaeoenvironmental investigations of loess–palaeosol sequences across the Carpathian Basin, well‐dated high‐resolution records are scarce. This paper presents a new chronology for loess‐palaeosol sequence at Surduk (Serbia), based on optically stimulated luminescence (quartz) and post‐infrared infrared (polymineral) dating. The presented record spans 53–19 ka, with primary loess deposition occurring after 52±2 differs from previously published chronologies that relied less...
Abstract. There exist very few comprehensive descriptions of the productivity and carbon cycling forest ecosystems. Here we present a description components annual Net Primary Productivity (NPP), Gross (GPP), autotrophic heterotrophic respiration, ecosystem respiration (RECO) for temperate mixed deciduous woodland at Wytham Woods in southern Britain, calculated using "bottom-up" biometric chamber measurements (leaf wood production soil stem respiration). These are compared with estimates...
Abstract. We present results from a study of canopy-atmosphere fluxes carbon dioxide 2007 to 2009 above site in Wytham Woods, an ancient temperate broadleaved deciduous forest southern England. Gap-filled Net Ecosystem Exchange (NEE) data were partitioned into Gross Primary Productivity (GPP) and ecosystem respiration (Re) analysed on daily, monthly annual timescales. Over the continuous 24 month period GPP was estimated at 21.1 Mg C ha−1 yr−1 Re 19.8 yr−1; (NEP) 1.2 yr−1. These estimates...
North Africa is one of the regions identified by UNESCO as experiencing severe water stress, and further drying could be devastating for region that also insecure. Tropical semi-arid regions, such are highly sensitive to climate change, predictions this area suggest will experience in next decades centuries. This contrasts with findings from palaeo-studies which show that, during Pleistocene, global warming often correlates humid phases. project uses speleotherm records palaoedust (loess)...
Abstract The Pannonian Basin, especially areas in proximity to the Danube River, provides a record of long-term Quaternary dust (loess) deposition central-eastern Europe. Here, Sr-Nd isotopic data from 47 samples (four profiles) loess-palaeosol deposits spanning last two-glacial-interglacial cycles is presented. This geochemical compared with large number bedrock and sedimentary across region decipher sources sediment transport pathways. results counter hypothesis that Sahara was major...
Olduvai Gorge in northern Tanzania is part of a globally important archeological and paleoanthropological World Heritage Site location critical to our understanding modern human evolution. The Ndutu Beds the upper geological sequence at represent oldest unit yield Homo sapiens skeletal material Middle Stone Age technology. However, timing deposition poorly constrained present, which limits paleoenvironments for contextualizing H. related technologies Basin. Using suite 15 luminescence ages...