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Prof Stefan Grab

Position: Professor in Physical Geography

Division: Geography

Qualifications: HDE, PhD

Office: BP117

Tel: 27 11 717 6512

Email: Stefan.Grab@wits.ac.za

 

Teaching

GEOG2010: Earth and Atmospheric Processes

GEOG3020: Climate and Environmental Change

 

Research Interests

Geomorphology, environmental change, historical climates, climate change

 

Publications

Edited books

Grab, S.W. & Knight, J. (2015). Landscapes and Landforms of South Africa. Springer Publishers.

Knight, J. & Grab, S.W. (2016). Quaternary Environmental Change in Southern Africa: Physical and Human Dimensions. Cambridge University Press.

 

Book chapters

Grab, S.W. 2010.  Drakensberg escarpment: Mountains of Geomorphic Diversity. In: Mignon, P. (Editor), Geomorphological Landscapes of the World, Springer, p133-142.

Grab, S.W., Mills, S.C. & Carr, S.J. 2012. Periglacial and Glacial Geomorphology. In: Holmes, P. & Meadows, M.E. The Geomorphology of Southern Africa (2nd Edition).

Grab, S.W. & Knight, J. 2015. Landscapes and landforms of South Africa – an overview. In: Grab, S.W. & Knight, J. (Eds). Landscapes and Landforms of South Africa. Springer Publishers, p1-9.

Grab, S.W. 2015. Sandstone landforms of the Karoo Basin: naturally sculpted rock. In: Grab, S.W. & Knight, J. (Eds). Landscapes and Landforms of South Africa. Springer Publishers, p11-21.

Knight, J. & Grab, S.W. 2015. Rocky shorelines of the Wild Coast. In: Grab, S.W. & Knight, J. (Eds). Landscapes and Landforms of South Africa. Springer Publishers, p57-63.

Knight, J. & Grab, S.W. 2015. The Drakensberg escarpment: mountain processes at the edge. In: Grab, S.W. & Knight, J. (Eds). Landscapes and Landforms of South Africa. Springer Publishers, p47-55.

Knight, J. Grab, S.W. & Esterhuysen, A.  2015. Geoheritage and geotourism in South Africa. In: Grab, S.W. & Knight, J. (Eds). Landscapes and Landforms of South Africa. Springer Publishers, p165-173.

Knight, J. & Grab, S.W. 2016. The context of Quaternary environmental change in southern Africa.  In: Knight, J. & Grab, S.W. (Eds). Quaternary Environmental Change in Southern Africa. Cambridge University Press, p1-17.

Knight, J. & Grab, S.W. 2016. A continental-scale perspective on landscape evolution in southern Africa during the Cenozoic. In: Knight, J. & Grab, S.W. (Eds). Quaternary Environmental Change in Southern Africa. Cambridge University Press, p30-46.

Grab, S.W. & Knight, J.2016. Glacial and periglacial geomorphology. In: Knight, J. & Grab, S.W. (Eds), Quaternary Environmental Change in Southern Africa. Cambridge University Press, p121-136.

Fitchett, J., Knight, J. & Grab, S.W. 2016. Minerogenic microfossil records of Quaternary environmental change in southern Africa. In: Knight, J. & Grab, S.W. (Eds). Quaternary Environmental Change in Southern Africa. Cambridge University Press, p324-348.

Knight, J., Stratford, D. & Grab, S.W. 2016. Landscape–climate–human relations in the Quaternary of southern Africa. In: Knight, J. & Grab, S.W. (Eds). Quaternary Environmental Change in Southern Africa. Cambridge University Press, p412-431.

Botha, G.A. & Grab, S.W. 2016. Evolution of the Ukhahlamba-Drakensberg: 200 million years of fire and ice. In: Anhausser, C., Viljoen, M. & Viljoen, R. (Eds).  Africa’s top Geological Sites. Struik Publishers, Cape Town, p74-80.

 

Journal articles (peer-reviewed)

Grab, S.W. 2010. Alpine turf exfoliation pans in Lesotho, southern Africa: climate-process-morphological linkages. Geomorphology, 114, 261-275.

Nash, D.J. & Grab, S.W. 2010. “A sky of brass and burning winds”: Documentary evidence of rainfall variability in the kingdom of Lesotho, southern Africa, 1824-1900. Climatic Change. 101, 617-653.

Le Baron, J.C., Grab, S.W. & Kuman, K. 2010. Grain-size characteristics of surface sands and sandstones: indicators of potential sediment sources for the southern Tuli Basin, South Africa. The South  African Geographical Journal, 92, 7-21.

Grab, S.W. & Nash, D.J. 2010. Documentary evidence of climate variability during cold seasons in Lesotho, southern Africa, 1833-1900. Climate Dynamics, 34, 473-499.

Le Baron, J.C., Kuman, K. & Grab, S.W. 2010. The landscape distribution of Stone Age artifacts on the Hackthorne Plateau, Limpopo Province, South Africa. South African Archaeological Bulletin, 65, 123-131.

Grab, S.W. & Mills, S.C. 2011. Late Quaternary slope environments in the upper Sehonghong Valley,eastern Lesotho. Proceedings of the Geologists’ Association, 122, 179-185.

Grab, S.W. & Craparo A. 2011. Advance of apple and pear tree full bloom dates in response to climate change in the southern Cape, South Africa: 1973-2009. Agricultural and Forest Meteorology, 151, 406-413.

Le Baron, J.C., Grab, S.W. & Kuman, K. 2011. Surface texture analysis of southern Tuli Basin sediments: implications for Limpopo Valley geoarchaeological contexts. Journal of African Earth Sciences, 59, 384-394

Viles, H., Goudie, A., Grab, S.W. & Lalley, J. 2011. The use of the Schmidt Hammer and Equotip for rock hardness assessment in geomorphology and heritage science: A comparative analysis. Earth Surface Processes and Landforms, 36, 320-333.

Linde, J. & Grab, S.W. 2011. The changing trajectory of snow mapping. Progress in Physical Geography, 35, 139-160.

Grab, S.W., Goudie, A.S., Viles, H.A. & Webb, N. 2011. Sandstone geomorphology of the Golden Gate Highlands National Park, South Africa, in a global context. Koedoe, 53, Art. #985, 14 pages. Doi:10.4102/koedoe.

Grab, S.W. & Svensen, H. 2011. Rock doughnut and pothole structures of the Clarens Fm. Sandstone in the Karoo Basin, South Africa: possible links to Lower Jurassic fluid seepage. Geomorphology, 131, 14-27.

Grab, S.W. 2012. On the burrowing impacts of ice rats Otomys sloggetti robertsi at a wetland fringe in the Afro-alpine zone, Lesotho. South African Geographical Journal, 94, 75-84.

Roshan, Gh. R. & Grab, S.W. 2012. Regional climate change scenarios and their impacts on water requirements for wheat production in Iran. International Journal of Plant Production, 6, 239-265.

Mills, S.C., Grab, S.W., Rea, B.R., Carr, S.C. & Farrow, A. 2012. Shifting westerlies and precipitation patterns during the Late Pleistocene in southern Africa determined using glacier reconstruction and mass balance modeling. Quaternary Science Reviews, 55, 145-159.

Roshan, Gh. R., Moghbel, M. & Grab, S.W. 2012. Caspian Sea level oscillations according to various scenarios of increasing atmospheric carbon dioxide concentrations. Iranian Journal of Environmental Health Science and Engineering, 9, 24.

Nicholson, S.E., Nash, D.J., Chase, B.M., Grab, S.W., Asfawossen, A., Lézine, A-M., Shanahan, T.M., Verschuren, D. & Umer, M. 2013. Temperature variability over Africa during the last 2000 years. The Holocene, 23, 1085-1094.

Grab, S.W. as co-author with others from the PAGES 2k Consortium, 2013. Continental-scale temperature variability over the Common Era. Nature Geoscience, 6, 339-346.

Grab, S.W.  2013. Fine-scale variations of near-surface-temperature lapse rates in the high Drakensberg escarpment, South Africa: environmental implications. Arctic, Antarctic and Alpine Research, 45, 500-514.

Neukom, R., Nash, D.J., Endfield, G.H., Grab, S.W., Grove, C., Kelso, C., Vogel, C.H., Zinke, J. 2014. Multi-proxy summer and winter precipitation reconstruction for southern Africa over the last 200 years. Climate Dynamics, 42, 2713-2726.

Knight, J. & Grab, S.W.  2014. Lightning as a geomorphic agent on mountain summits: Evidence from southern Africa. Geomorphology, 204, 61-70.

Knight, J. & Grab, S.W., 2014. Lightning as a geomorphic agent: Reply to comments by Sumner. Geomorphology, 211, 137-138.

Grab, S.W.  2014. Spatio-temporal attributes of water temperature and macroinvertebrate assemblages in the headwaters of the Bushman’s River, southern Drakensberg. Water SA, 40, 19-26.

Grab, S.W. & Linde, J. 2014. Mapping exposure to snow in a developing African context: implications for human and livestock vulnerability in Lesotho. Natural Hazards, 71, 1537-1560.

Stratford, D., Grab, S.W. & Pickering, T.R. 2014. The stratigraphy and formation history of fossil- and artifact-bearing sediments in the Milner Hall, Sterkfontein Cave, South Africa: New interpretations and implications for palaeoanthropology and archaeology. Journal of African Earth Science, 96C, 155-167.

Fitchett, J.M., Grab, S.W., Thompson, D.I., Roshan, Gh.R. 2014. Increased frost risk associated with advanced citrus flowering dates in Kerman and Shiraz, Iran: 1960-2010. International Journal of Biometeorology, 58, 1811-1815.

Fitchett, J.M., Grab, S.W., Thompson, D.I., Roshan, Gh.R. 2014. Spatio-temporal variation in phenological responses of citrus to climate change in Iran: 1960-2010. Agricultural and Forest Meteorology, 198-199, 285-293.

Fitchett, J.M. & Grab, S.W.  2014.  A 66-year tropical cyclone record for south-east Africa: temporal trends in a global context. International Journal of Climatology, 34, 3604-3615.

Fitchett, J.M., Grab, S.W. & Thompson, D.I. 2015. Plant Phenology and Climate Change: Progress in Methodological Approaches and Applications. Progress in Physical Geography, 39, 460-482.

Letsie, M. & Grab S.W. 2015. Social vulnerability assessment to natural hazards in the mountain Kingdom of Lesotho. Mountain Research and Development, 35, 115-125.

Craparo, A., Van Asten, P., Läderach, P., Jassogne, L. & Grab, S.W. 2015. Coffea arabica yields decline in Tanzania due to climate change: global implications. Agricultural and Forest Meteorology, 207, 1-10.

Fitchett, J., Grab, S.W. & Thompson, D.I. 2016. Temperature and tree age interact to increase mango yields in the lowveld, South Africa. South African Geographical Journal, 98, 105-117.

Mayet, N., Knight, J. & Grab, S.W. 2016. Spatial and temporal patterns of lightning strikes in the eastern Lesotho Highlands, southern Africa. South African Geographical Journal, 98, 321-336.

Fitchett, J., Grab, S.W., Bamford, M. & Mackay, A. 2016. A multi-disciplinary review of late Quaternary palaeoclimates and environments for Lesotho. South African Journal of Science, 112, Art. #2016-0045, 9 pages.

Fitchett, J., Grab, S.W., Bamford, M. & Mackay, A. 2016. A multi-proxy analysis of late Quaternary palaeoenvironments, Sekhokong Range, eastern Lesotho. Journal of Quaternary Science, 31, 788-798.

Holmes, P.J., Grab, S.W. & Knight, J. 2016. South African Geomorphology: current status and new challenges. South African Geographical Journal, 98, 405-416.

D.J. Nash, G. De Cort, B.M. Chase, D. Verschuren, S.E. Nicholson, T.M. Shanahan, A. Asrat, A-M Lézine, S.W. Grab. 2016.  African hydroclimatic variability during the last 2000 years. Quaternary Science Reviews, 154, 1-22.

 

Forthcoming  publications

Fitchett, J., Mackay, A.W., Grab, S.W. & Bamford, M.K. 2017. Holocene climatic variability indicated by a multi-proxy record from southern Africa’s Highest wetland. The Holocene.

Fitchett, J., Grab, S.W., Bamford, M.K. & Mackay, A.W. 2017. Late Quaternary research in southern Africa: progress, challenges and future trajectories. Transactions of the Royal Society of South Africa.

Pauline, N.M., Vogel, C., Grab, S.W., Liwenga, E.T. 2017. Smallholder farmers in the Great Ruaha River sub-Basin of Tanzania: coping or adapting to rainfall variability. Climate and Development.

Lakhraj-Govender, R., Grab, S.W. & Ndebele, N. 2017. A homogenized long-term temperature record for the Western Cape Province in South Africa: 1916-2013. International Journal of Climatology.

Grab, S.W., Linde, J. & De Lemos, H. 2017. Some attributes of snow occurrence and snowmelt/sublimation rates in the Lesotho Highlands: environmental implications. Water SA.

Fitchett, J.M., Bamford, M.K., Mackay, A.W. and Grab, S.W. 2017. Chrysocoma ciliata L. (Asteraceae) in the Lesotho Highlands: An anthropogenically introduced invasive or a niche coloniser? Biological Invasions, In Press.

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