AfriCarbon
Publications

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AuthorYearTitleJournal
Mills AJ, Duker R, Lechmere-Oertel RG, van Mazijk R, Potts AJ. 2023Science is the fuel required for lifting ecosystem restoration into the orbit of hundreds of millions of hectares.Frontiers in Conservation Science 4:1283262 DOI=10.3389/fcosc.2023.1283262
van der Vyver ML, Mills AJ, Difford M & Cowling RM.2021Herbivory and misidentification of target habitat constrain region-wide restoration success of spekboom (Portulacaria afra) in South African subtropical succulent thicket.PeerJ. 9: p.e11944.
van der Vyver, M.L., Mills A.J. & Cowling R.M.2021A biome-wide experiment to assess the effects of propagule size and treatment on the survival of Portulacaria afra (spekboom) truncheons planted to restore degraded subtropical thicket of South Africa.PloS One. 16: p.e0250256.
Duker, R., et al.2020Site selection for subtropical thicket restoration: mapping cold-air pooling in the South African sub-escarpment lowlands.PeerJ 8
Mills, A.J. & de Wet, R2019Quantifying a sponge: The additional water in restored thicketSouth African Journal of Science, 115:1-2.
Van der Vyver, M. & Cowling, R.M.2019Aboveground biomass and carbon pool estimates of Portulacaria afra (spekboom)-rich subtropical thicket with species-specific allometric models.Forest Ecology and Management, 448:11-21.
Mills, A.J., Milton, S.J., Taplin, B.D. & Allen, J.L.2018Viability of watering Portulacaria afra truncheons to facilitate restoration of subtropical thicket: Results from a nursery experiment and cost model.South African Journal of Botany, 115:58-64.
Mills, A.J., van der Vyver, M., Gordon, I.J., Patwardhan, A., Marais C., Blignaut, J., Sigwela, A. & Kgope, B.2015Prescribing innovation within a large-scale restoration programme in degraded subtropical thicket in South Africa.Forests, 6:4328-4348.
Mills, A.J. & Cowling, R.M.2014How fast can carbon be sequestered when restoring degraded subtropical thicket?Restoration Ecology, 22:571-573.
Mills, A.J., Spear, D., Ndhlovu, T., Knight, M.H., Pienke, D.M., Hofmeyr, S. & Cowling, R.M.2014Biomass of large herbivores in South African subtropical thicket. African Journal of Ecology DOI: 10.1111/aje.12162.
Van Luijk, G., Cowling R.M., Riksen, M.J.P.M. & Glenday, J.2013Hydrological implications of desertification: Degradation of South African semi-arid subtropical thicket.Journal of Arid Environments, 91:14-21.
Van der Vyver, M.L., Cowling, R.M., Campbell, E.E. & Difford, M.2012Active restoration of woody canopy dominants in degraded South African semi-arid thicket is neither ecologically nor economically feasible.Applied Vegetation Science, 15:26-34.
Van der Vyver, M.L., Cowling, R.M, Mills, A.J. & Difford, M.2012Spontaneous return of biodiversity in restored subtropical thicket: Portulacaria afra as an ecosystem engineer.Restoration Ecology, 21:736-744.
Mchunu, S.E.2012Distribution and stability of soil carbon in spekboom thicket, Eastern Cape, South Africa. MSc. Thesis.University of Stellenbosch, Soil Science Department.
Mills, A.J., Cowling, R.M., Steyn, D., Spekreijse, J., Van den Broeck, D., Weel, S. & Boogerd, C.2011Portulacaria 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.J. & Cowling, R.M. 2010Below-ground carbon stocks in intact and transformed subtropical thicket landscapes in semi-arid South Africa.Journal of Arid Environments, 74:93-100.
Sigwela, A.M., Kerley, G.I.H., Mills, A.J. & Cowling, R.M.2009The impact of browsing-induced degradation on the reproduction of subtropical thicket canopy shrubs and trees.South African Journal of Botany, 75:262-267.
Powell, M.J.2009Restoration of degraded subtropical thickets in the Baviaanskloof Megareserve, South Africa: The role of carbon stocks and Portuclacaria afra survivorship.MSc thesis, Rhodes University, Grahamstown
Lechmere-Oertel, R.G., Kerley, G.I.H., Mills, A.J. & Cowling, R.M.2008Litter dynamics across browsing-induced fence line contrasts in succulent thicket, South Africa.South African Journal of Botany, 74:651-659.
Mills, A.J., Turpie, J., Cowling, R.M., Marais, C., Kerley, G.I.H., Lechmere-Oertel, R.G., Sigwela, A.M. & Powell, M.2007Assessing costs, benefits and feasibility of subtropical thicket restoration in the Eastern Cape, South Africa.In: J.Aronson, S.J. Milton and J. Blignaut (eds), Restoring natural capital. Science, business and practice. Island Press, Washington DC.
Mills, A.J. & Cowling, R.M.2006Rate of carbon sequestration at two thicket restoration sites in the Eastern Cape, South Africa.Restoration Ecology, 14:38-49.
Lechmere-Oertel, R.G., Kerley, G.I.H. & Cowling, R.M.2005Patterns and implications of transformation in semi-arid succulent thicket, South Africa.Journal of Arid Environments, 62:459-474.
Lechmere-Oertel, R.G., Kerley, G.I.H. & Cowling, R.M.2005Landscape dysfunction and reduced spatial heterogeneity in soil resources and fertility in semi-arid succulent thicket, South Africa.Austral Ecology, 30:615-624
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.2005Ecosystem 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, 22:183-190.
Mills, A.J., Cowling, R.M., Fey, M.V., Kerley, G.I.H., Lechmere-Oertel, R.G., Sigwela, A., Skowno, A. & Rundel, P.W.2005Effects of goat pastoralism on ecosystem carbon storage in semi-arid thicket, Eastern Cape, South Africa. Austral Ecology, 30:807-813.
Mills, A.J. & Fey, M.V.2004Soil carbon and nitrogen in five contrasting biomes of South Africa exposed to different land uses.South African Journal of Soil Science, 21:94-103.
Mills, A.J. & Fey, M.V.2004Transformation of thicket to savanna reduces soil quality in the Eastern Cape, South Africa.Plant and Soil, 265:153-163.
Sigwela, A. M. 2004.2004The impacts of landuse on vertebrate diversity and vertebrate- mediated processes in the Thicket Biome, Eastern Cape. Ph.D. thesis.University of Port Elizabeth, Port Elizabeth, South Africa.
Lechmere-Oertel, R.G.2003The effects of goat browsing on ecosystem patterns and processes in succulent thicket, South Africa.Unpublished doctoral dissertation, University of Port Elizabeth, Port Elizabeth, South Africa.
Mills, A.J. & Fey, M.V.2003Declining soil quality in South Africa: effects of land use on soil organic matter and surface crusting. South African Journal of Science, 99:429-436.
Lloyd, J.W., van den Berg, E. & Palmer, A.R.2002Patterns of transformation and degradation in the thicket biome, South Africa. TERU report no: 39. University of Port Elizabeth, Port Elizabeth, South Africa.
Midgley, J. & Cowling, R.M. 1993Regeneration patterns in the Cape subtropical transitional thicket: where are all the seedlings? South African Journal of Botany, 59:496-499.