Primary authorship

Mills, A.J., Milewski, A.V., Fey, M.V., Rogers, K.H., Witkowski, E.T.F., Gillson, L., Gröngröft, A., Petersen, A., Stalmans, M., Sirami, C., Steyn, D. & Mager, D.M. 2012. Constraint on woody cover in relation to nutrient content of soils in western southern Africa. Oikos (in press).

Mills, A.J., Cowling, R.M., Steyn, D., Spekreijse, J., Van den Broeck, D., Weel, S. & Boogerd, C. 2011. Portulacaria afra is constrained under extreme soil conditions in the Fish River Reserve, Eastern Cape, South Africa. South African Journal of Botany. 77: 782-786.

Mills, A., Fey, M., Kgope, B., Donaldson, J. & Bosenberg, J.D. 2011 Detecting the onset of rangeland degradation using soil respiration and boundary lines: preliminary findings from the Nama Karoo. African Journal of Range and Forage Science. 28: 87–92.

Mills, A.J. & Cowling, R.M. 2010. Below-ground carbon stocks in intact and transformed subtropical thicket landscapes in semi-arid South Africa. Journal of Arid Environments. 74: 93-100.

Mills, A.J., Fey, M.V., Donaldson, J., Todd, S. & Theron, L. 2009. Soil infiltrability as a driver of plant cover and species richness in the semi-arid Karoo, South Africa. Plant and Soil 320: 321-332 .

Mills, A.J., Milewski, A., Fey, M.V., Groengroeft, A. & Peterson, A. 2009. Fungus culturing, nutrient mining and geophagy: a geochemical investigation of Macrotermes and Trinervitermes mounds in southern Africa. Journal of Zoology 278:24-35.

Mills, A.J. & Milewski, A.V. 2007. Geophagy and micronutrient supplementation in the Ngorongoro Conservation Area, Tanzania, with particular reference to selenium, cobalt, and molybdenum. Journal of Zoology. 271:110-118.

Mills, A.J., Turpie, J., Cowling, R.M., Marais, C., Kerley, G.I.H., Lechmere-Oertel, R.G., Sigwela, A.M. & Powell, M. 2007. Assessing costs, benefits and feasibility of subtropical thicket restoration in the Eastern Cape, South Africa. In Restoring Natural Capital, S. Milton & J. Aronson (eds), Island Press, Washington DC. Pages: 179-187.

Mills, A.J., Fey, M.V., Grongroft, A., Petersen, A. & Medinski, T.V. 2006. Unravelling the effects of soil properties on water infiltration: segmented quantile regression on a large data set from arid southwest Africa. Australian Journal of Soil Research. 44:783-797.

Mills, A.J. 2006. The role of salinity and sodicity in the dieback of Acacia xanthophloea in Ngorongoro Caldera, Tanzania. African Journal of Ecology. 44:61-71.

Mills, A.J., Morkel, P., Amiyo, A., Runyoro, V., Borner, M. & Thirgood, S. 2006. Managing small populations in practice: black rhino in the Ngorongoro Crater, Tanzania. Oryx. 40:319-323.

Mills, A.J., Rogers, K.H., Stalmans, M. & Witkowski, E.T.F. 2006. A framework for the scaled exploration of the determinants of savanna and grassland distribution: a challenge for the new generation of ecologists. Bioscience. 56:579-589.

Mills, A.J., & Cowling, R.M. 2006. Rate of carbon sequestration at two thicket restoration sites in the Eastern Cape, South Africa. Restoration Ecology. 14:38-49.

Mills, A.J., O’Connor, T.G., Donaldson J.S., Fey, M.V., Skowno, A.L., Sigwela, A.M., Lechmere-Oertel, R.G. Bosenberg, J.D. 2005. Ecosystem carbon storage under different land uses in three semi-arid shrublands and a mesic grassland in South Africa. South African Journal of Plant and Soil 22:183190.

Mills, A.J., Cowling, R.M., Fey, M.V., Kerley G.I.H., Donaldson J.S., Lechmere-Oertel, R.G., Sigwela, A.M., Skowno, A.L. & Rundel, P. 2005. Effects of goat pastoralism on ecosystem carbon storage in semiarid thicket, Eastern Cape, South Africa. Austral Ecology 30:797-804.

Mills, A.J., Fey, M.V. & Johnson, C.E. 2005. Ionic strength as a measure of sulphate salinity stress: effects of sodium sulphate, sodium chloride and manganese sulphate on kikuyu (Pennisetum clandestinum) growth and ion uptake. South African Journal of Plant and Soil 21:209-213.

Mills, A.J. & Fey, M.V. 2005. Interactive response of herbivores, soils and vegetation to annual burning in a South African savanna. Austral Ecology 30:435-444.

Mills, A.J. & Fey, M.V. 2004. Soil carbon and nitrogen in five contrasting biomes of South Africa. South African Journal of Plant and Soil 21:94-103.

Mills, A.J. & Fey, M.V. 2004. Transformation of thicket to savanna reduces soil quality in the Eastern Cape, South Africa. Plant and Soil 265:153-163.

Mills, A.J. & Fey, M.V. 2004. Effects of vegetation cover on the tendency of soil to crust in South Africa. Soil Use and Management 20:308-317.

Mills, A.J. & Fey, M.V. 2004. A simple laboratory infiltration method for measuring the tendency of soils to crust. Soil Use and Management 20:8-12.

Mills, A.J. & Fey, M.V. 2004. Frequent fires intensify soil crusting: physicochemical feedback in the pedoderm of long-term burn experiments in South Africa. Geoderma 121:45-64

Mills, A.J. & Fey, M.V. 2003. Declining soil quality in South Africa: effects of land use on soil organic matter and surface crusting. South African Journal of Science 99:429-436.

Mills A.J. 2003. Reciprocal relationships between vegetation structure and soil properties in selected biomes of South Africa. PhD thesis, University of Stellenbosch, Stellenbosch.

Mills, A.J. 1996. The ecology of land degradation with special reference to the resilience of African semiarid rangelands to domestic livestock grazing pressure. MPhil thesis, University of Cambridge, Cambridge.

Mills, A.J. 1995. Response of kikuyu grass (Pennisetum clandestinum) to irrigation with saline, sodic wastes and nitrogenous, manganiferous effluent. MSc thesis, University of Cape Town, Cape Town.

Co-authorship

Kaseke, K.F., Mills, A.J., Esler, K., Henschel, J., Seely, M.K. & Brown, R. 2012. Spatial variation of ‘‘non-rainfall’’ water input and the effect of mechanical soil crusts on input and evaporation. Pure and Applied Geophysics. DOI 10.1007/s00024-012-0469-5.

Van der Vyfer, M.L., Cowling, R.M., Mills, A.J. & Difford, M. 2012. Spontaneous return of biodiversity in restored subtropical thicket: Portulacaria afra as an ecosystem engineer. Restoration Ecology. (In press).

Mager, D.M., Hui, C. & Mills, A.J. 2012 A first record of biological soil crusts in
the Cape Floristic Region. South African Journal of Science (in press).

Kaseke, K.F., Mills, A.J., Brown, R., Esler, K., Henschel, J. & Seely, M.K. 2011. A method for direct assessment of the “non rainfall” atmospheric water cycle: input and evaporation from the soil. Pure and Applied Geophysics. DOI:10.1007/s00024-011-0328-9

Kaseke, K.F., Mills, A.J., Henschel, J., Seely, M.K., Esler, K. & Brown, R. 2011. The effects of desert pavements (gravel mulch) on soil micro-hydrology. Pure and Applied Geophysics. DOI: 10.1007/s00024-011-0367-2

Cowling R.M. & Mills A.J. 2011. A preliminary assessment of rain throughfall beneath Portulacaria afra canopy in subtropical thicket and its implications for soil carbon stocks.  South African Journal of Botany. 77, 236-240.

Zedda, L., Gröngröft, A., Schultz, M., Petersen, A., Mills, A. & Rambold G. 2011. Distribution patterns of soil lichens across the principal biomes of southern Africa. Journal of Arid Environments. 75: 215-220

Stephenson, J., A. Mills, J. Eksteen, A. Milewski, & Myburgh J. 2010. Geochemistry of mineral licks at Loskop Dam Nature Reserve, Mpumalanga, South Africa. Environmental Geochemistry and Health. 33:49-53.

Milewski, A.V. & Mills, A.J. 2010. Does life consistently maximise energy intensity? Biological Reviews. 85:859-879.

Jeltsch, F., Blaum, N., Classen, N., Eschenbach, A., Grohmann, C., Gröngröft, A., Joubert, D. F., Horn, A., Lohmann, D., Linsenmair, K. E., Lück-Vogel, M., Medinski, T. V., Meyfarth, S., Mills, A., Petersen, A., Popp, A., Poschlod, P., Reisch, C., Rossmanith, E., Rubilar, H., Schütze, S., Seymour, C., Simmons, R., Smit, G. N., Strohbach, M., Tews, J., Tietjen, B., Wesuls, D., Wichmann, M., Wieczorek,, M., Zimmermann, I. 2010: Impacts of landuse and climate change on the dynamics and biodiversity in the Thornbush Savanna Biome. – In: Hoffman, M. T., Schmiedel, U., Jürgens, N. [Eds.]: Biodiversity in southern Africa. Volume 3: Implications for landuse and management: pp. 33–74, Klaus Hess Publishers, Göttingen & Windhoek.

Gröngröft, A., Mager, D., Medinski, T., Mills, A., Petersen, A., Eschenbach, A. 2010: Evaluation of the soil degradation state along fence-line contrasts. – In: Schmiedel, U., Jürgens, N. [Eds.]: Biodiversity in southern Africa. Volume 2: Patterns and processes at regional scale: pp. 207–213, Klaus Hess Publishers, Göttingen & Windhoek.

Petersen, A., Gröngröft, A., Mills, A., Miehlich, G. 2010: Soils along the BIOTA transects. – In: Schmiedel, U., Jürgens, N. [Eds.]: Biodiversity in southern Africa. Volume 2: Patterns and processes at regional scale: pp. 84–92, Klaus Hess Publishers, Göttingen & Windhoek.

Pröpper, M., Gröngröft, A., Falk, T., Eschenbach, A., Fox, T., Gessner, U., Hecht, J., Hinz, M. O., Huettich, C., Hurek, T., Kangombe, F. N., Keil, M., Kirk, M., Mapaure, C., Mills, A., Mukuya, R., Namwoonde, N. E., Overmann, J., Petersen, A., Reinhold-Hurek, B., Schneiderat, U., Strohbach, B. J., Lück-Vogel, M., Wisch, U. (2010): Causes and perspectives of land-cover change through expanding cultivation in Kavango. – In: Hoffman, M. T., Schmiedel, U., Jürgens, N. [Eds.]: Biodiversity in southern Africa. Volume 3: Implications for landuse and management: pp. 1–31, Klaus Hess Publishers, Göttingen & Windhoek.

Zedda, L., Gröngröft, A., Schultz, M., Petersen, A., Mills, A., Rambold, G. 2010: Patterns of soil lichen diversity along the BIOTA transects in relation to climate and soil features. – In: Schmiedel, U., Jürgens, N. [Eds.]: Biodiversity in southern Africa. Volume 2: Patterns and processes at regional scale: pp. 100–106, Klaus Hess Publishers, Göttingen & Windhoek.

Sako, A., Mills, A.J. & Roychoudhury, A.N. 2009. Rare earth and trace element geochemistry of termite mounds in central and northeastern Namibia: Mechanisms for micro-nutrient accumulation. Geoderma. 153:217-230.

Medinksi, T.V., Mills, A.J. & Fey, M.V. 2009. Relationships between soil particle size fractions and infiltrability. South African Journal of Plant and Soil 26: 147-156.

Medinksi, T.V., Mills, A.J. & Fey, M.V. 2009. Infiltrability in soils from south-western Africa: effects of texture, electrical conductivity and exchangeable sodium percentage. South African Journal of Plant and Soil 26: 157-163.

Sigwela, A., Cowling, R., Kerley, G. & Mills, A. 2009. The impact of browsing-induced degradation on the reproduction of subtropical thicket canopy shrubs and trees. South African Journal of Botany 75:262-267.

Fox, S.C., Mills, A.J. & Poch, R.M. 2009. Micromorphology of surface crusts in the Knersvlakte, South Africa. Journal of Mountain Science 6:189-196.

Brown, R., Mills, A. & Jack, C. 2008. Non-rainfall moisture inputs in the Knersvlakte: Methodology and preliminary findings. Water SA 34:275-278.

Lechmere-Oertel, R.G., Kerley, G.I.H. Mills, A.J. & Cowling, R.M. 2008. Litter dynamics across browsing-induced fenceline contrasts in succulent thicket, South Africa.South African Journal of Botany 74: 651–659.

Fey, M.V., Francis, M.L., Prinsloo, H.P., Ellis, F., Mills, A.J., de Clercq, W.P., Sinjan, E. & Medinski, T.V. 2007. Soils of Namaqualand: compensations for aridity. Journal of Arid Environments 70:588-603.

Milton, S.J., Dean, W.R.J. O’Connor, T.G. & Mills, A.J. 2007. Scaling up from site-based research to a national research and monitoring network: lessons from Tierberg Karoo Research Centre and other design considerations. South African Journal of Science 103:311–317.

Turpie, J.K., O'Connor, T.G., Mills, A.J. and Robertson, H. 2007. The ecological and economic consequences of changing land use in the southern Drakensberg grasslands. South African Journal of Economic and Management Sciences. 10: 423-441.

Fey, M.V., Mills, A.J. & Yaalon, D.H. 2006. The alternative meaning of pedoderm and its use for soil surface characterisation. Geoderma. 133:474-477.

O’Connor, T.G., Uys, R.G. & Mills, A.J. 2004. Ecological effects of firebreaks in the montane grasslands of the southern Drakensberg, South Africa. African Journal of Range and Forage Science 21:1-10.

Fey, M.V., O’Brien, R.D. & Mills, A.J. 2002. Rehabilitation of waste rock and overburden dumps. Encyclopedia of Soil Science. Marcel Dekker, Inc., New York.

PAPERS DELIVERED AT CONFERENCES

Mills, A.J., Fey, M.V. & Medinski, T.V. 2006. Identifying pedodermal soil properties that limit rainwater infiltration: a new approach in arid south-west Africa. Soil Science Society of South Africa Congress, Durban, South Africa, 23-27 January.

Mills, A.J. 2004. Tendency to crust as an indicator of soil quality in South Africa. Eurosoil International Soil Science Congress, Freiburg, Germany, 4-12 September.

Mills, A.J. 2003. Frequent fires intensify soil crusting: results from long-term experiments in South Africa. Golden Jubilee Congress of the Soil Science Society of South Africa, University of Stellenbosch, 20-23 January.

Mills, A.J. 2003. Declining soil quality in South Africa: soil carbon and crusting. A celebratory review paper for the Golden Jubilee Congress of the Soil Science Society of South Africa, University of Stellenbosch, 20-23 January.

Mills, A.J., O’Connor, T.G., Skowno, A., Bosenberg, D.W., Donaldson, J., Lechmere-Oertel, R., Fey, M.V., & Sigwela, A. 2003. Farming for carbon credits: implications for land use decisions in South African rangelands. African Journal of Range and Forage Science 20(2) Proceedings of the VII International Rangelands Congress, Durban, South Africa, 26 July-1 August.

Mills, A.J. 2002. Farming with goats alters vegetation, reduces carbon stocks and increases the tendency of soils to crust in Xeric Succulent Thicket of the Eastern Cape, South Africa. Proceedings of the VIII International Congress of Ecology, Seoul, South Korea, 11-18 August.

Mills, A.J. 2001. The effect of fire on water infiltration and nutrient availability in the Kruger National Park. A paper presented at workshops at the Long Term Ecological Research sites in Sevilleta, New Mexico and Konza Prairie, Kansas, USA, 13-24 May.

Mills, A.J. 2000. The effect of fire on water infiltration and nutrient availability in African savannas: implications for managing ecosystem recovery. Remade Lands International Conference. Perth, Western Australia, 30 November-2 December.

Mills, A.J. 2000. Fire and soil crusting in African savannas. 11th International Soil Conservation Organisation Conference: Land Conservation and Food Production in the Third Millenium. Buenos Aires, Argentina, 22-27 October.