A5105754480- Geology and Paleoclimatology Research
- Pleistocene-Era Hominins and Archaeology
- Aquatic Ecosystems and Biodiversity
- Rangeland Management and Livestock Ecology
- Geological formations and processes
- Archaeology and ancient environmental studies
- Groundwater and Isotope Geochemistry
- Groundwater and Watershed Analysis
- Evolution and Paleontology Studies
- Tree-ring climate responses
- Ecology and Vegetation Dynamics Studies
- Karst Systems and Hydrogeology
- Landslides and related hazards
- Aquatic Ecosystems and Phytoplankton Dynamics
- Soil erosion and sediment transport
- African Botany and Ecology Studies
- SARS-CoV-2 and COVID-19 Research
- Machine Learning and ELM
- Ottoman Empire History and Society
- Flood Risk Assessment and Management
- Botanical Studies and Applications
- Genetic diversity and population structure
- Primate Behavior and Ecology
- Brain Tumor Detection and Classification
- Transboundary Water Resource Management
Rawalpindi Medical University
2024
Jawaharlal Nehru Technological University, Hyderabad
2023
Addis Ababa University
2003-2015
Biome reconstruction from pollen and plant macrofossil data provides an objective method to reconstruct past vegetation. Biomes for Africa the Arabian peninsula have been mapped 6000 years bp provide a new standard evaluation of simulated palaeovegetation distributions. A test using modern shows robustness biomization method, which is able predict major vegetation types with high confidence level. The application procedure set (pollen analyses) systematic differences present that are...
Understanding social-ecological system dynamics is a major research priority for sustainable management of landscapes, ecosystems and resources. But the lack multi-decadal records represents an important gap in information that hinders development agenda. Without improved on long-term complex interactions between causal factors responses, it will be difficult to answer key questions about trends, rates change, tipping points, safe operating spaces pre-impact conditions. Where available...
Pollen and charcoal analysis of sediment cores from two lakes in the highlands northern Ethiopia provide evidence that vegetation has changed response to human impact during last 3000 years. The natural, pre-disturbance area was Podocarpus-Juniperus forest. At about 500 bc, following Semitic immigration Ethiopia, forests were cleared replaced by a secondary Dodonaea scrub grassland persisted for 1800 Grasslands dominant ad 1200 1400, probably as result further intensification grazing,...
A growing number of proxy, historical and instrumental data sets are now available from continental Africa through which past variations in temperature can be assessed. This paper, co-authored by members the PAGES Africa2k Working Group, synthesises published material to produce a record variability for as whole spanning last 2000 years. The paper focuses on during ‘Medieval Climate Anomaly’ (MCA), ‘Little Ice Age’ (LIA) late 19th–early 21st centuries. Warmer conditions MCA evident records...
Accurate screening of COVID-19 infection status for symptomatic patients is a critical public health task. Although molecular and antigen tests now exist COVID-19, in resource-limited settings, are often not available. Furthermore, during the early stages pandemic were available any capacity. We utilized an automated machine learning (ML) approach to train evaluate thousands models on clinical dataset consisting commonly laboratory data, along with cytokine profiles (n = 150). These then...
The oxygen and carbon isotope composition of sedimentary carbonates formed in Lake Hayq, a closed-basin lake northern Ethiopia, suggests marked variation the balance between precipitation evaporation during last 2000 years. Diatom stratigraphy shows that remained deep enough to support planktonic taxa, was never saline. record rainfall higher than twentieth century most this time, especially two short intervals centred on AD 700 1300. Climate drier only around 800, from 1750—1900. Similar,...
The Woranso-Mille paleontological study area is located in the central Afar region of Ethiopia, about 360 km northeast capital, Addis Ababa. Some parts this have been paleontologically known since 1970s. However, most fossiliferous areas were discovered by surveys conducted between 2002 and 2004. By end 2006 field season, a total 17 vertebrate localities had designated, more than 1000 fossil specimens collected. Among these specimens, there are 20 hominid craniodental postcranial remains,...
We investigated genetic variation of 273 individuals from 25 populations the monotypic species Hagenia abyssinica (Rosaceae) highlands Ethiopia at three chloroplast microsatellite loci. The objectives were to infer factors that shaped structure and reconstruct recolonization history species. Six haplotypes phylogenetically grouped into two lineages identified. Homology loci respective regions genome was confirmed by sequencing. found in showed a clear pattern congruence between their...
Soil formation occurs through numerous physical and chemical weathering processes acting to alter the parent rock on Earth's surface. Samples of surface soils were collected over a range elevations (2000-3600 m) from profiles directly overlying basaltic more felsic rocks, region in NW Ethiopia. The investigated determine their composition X‑ray diffraction was used identify quantify individual mineral phases. data set analyzed using non-parametric statistics (Spearman's Rank Mann-Whitney U...
The interpretation of palaeoclimate records in speleothems depends on the understanding modern climate region, geology, hydrology above caves, and within-cave climate. Monitoring variability, geochemistry speleothem-forming drip waters, associated surface groundwater, provides a baseline for speleothem palaeohydrological records. Here, we present results such monitoring Mechara caves southeastern Ethiopia, conducted between 2004 2007. Results show nearly constant (temperature humidity) all...
Abstract Stratigraphic analysis of alluvial/colluvial sequences and 14 C dating have been used as proxies for Holocene climate changes in the highlands Tigray (northern Ethiopia). The studied records show alternations buried soils peaty–clayey sediments, pointing to wet, stabilization phases, organic-free colluvium layers resulting from abrupt occurrence dry-climate episodes. dates, mostly unpublished, cluster 11,090–9915, 9465–9135, 8450–7330, 6720–3635, 2710–2345, 1265–790 cal yr B.P. time...
No abstract available. <br><br> doi:<a href="http://dx.doi.org/10.2204/iodp.sd.8.10.2009" target="_blank">10.2204/iodp.sd.8.10.2009</a>