Peer Reviewed Publications

Van der Merwe, H. Van Rooyen, N., Bezuidenhout, H., Bothma, J. du P. & Van Rooyen, M.W. (2019) Vachellia erioloba dynamics over 38 years in the Kalahari Gemsbok National Park, South Africa. Koedoe 61:a1534. (doi:10.4102/koedoe.v61i1.1534)

Van der Merwe, H. & Hoffman, M.T. (2019) Vegetation of Akkerendam Nature Reserve, Northern Cape: Delineation and dynamics over 100 years. Bothalia 49: a2401. (doi: 10.4102/abc.v49i1.2401)

Arena, G., Van der Merwe, H., Todd, S.W., Pauw, M.J., Milton, S.J., Dean, W.R.J. & Henschel, J.R. (2018) Reflections, applications and future directions of Long Term Ecological Research at Tierberg. African Journal of Range and Forage Science 35:257-265. (doi: 10.2989/10220119.2018.1513072)

Dean, W.R.J., Seymour, C.L. & Joseph, G.S. (2018) Linear structures in the Karoo, South Africa, and their impacts on biota. African Journal of Range and Forage Science 35:223-232. (doi: 10.2989/10220119.2018.1514530)

Du Toit, J.C.O., Ramaswiela, T., Pauw, M.J. & O' Connor, T. (2018) Interactions of grazing and rainfall on vegetation at Grootfontein in the eastern Karoo. African Journal of Range and Forage Science 35:267-276. (doi: 10.2989/10220119.2018.1508072)

Henschel, J.R., Hoffman, M.T. & Walker, C. (2018) Introduction to the Karoo Special Issue: Trajectories of change in the Anthropocene. African Journal of Range and Forage Science 35:151-156. (doi: 10.2989/10220119.2018.1535214)

Henschel, J.R. & Lubin, Y. (2018) Web spider abundance is affected by sheep farming in the Karoo. African Journal of Range and Forage Science 35:319-324. (doi: 10.2989/10220119.2018.1522514)

Hoffman, M.T., Walker, C. & Henschel, J.R. (2018) Reflections on the Karoo Special Issue: towards an interdisciplinary research agenda for South Africa's drylands. African Journal of Range and Forage Science 35:387-393. (doi: 10.2989/10220119.2018.1540910)

McManus, J., Goets, S.A., Bond, W.J., Henschel, J.R., Smuts, B. & Milton, S.J. (2018) Effects of short-term intensive trampling on Karoo vegetation. African Journal of Range and Forage Science 35:311-318. (doi: 10.2989/10220119.2018.1529706)

Nenzhelele, E., Todd, S.W., Hoffman, M.T. (2018) Long-term impacts of livestock grazing and browsing in the Succulent Karoo: a 20-year study of vegetation change under different grazing regimes in Namaqualand. African Journal of Range and Forage Science 35:277-287. (doi: 10.2989/10220119.2018.1519640)

Pauw, M.J., Esler, K.J. & Le Maitre, D.C. (2018) Assessing the success of experimental rehabilitation on a coastal mineral sands mine in Namaqualand, South Africa. African Journal of Range and Forage Science 35:363-373. (doi: 10.2989/10220119.2018.1526823)

Steed, A., Swart, R., Pauw, M.J. & Roets, F. (2018) Response of arthropod communities to plant-community rehabilitation efforts after strip mining on the semi-arid west coast of South Africa. African Journal of Range and Forage Science 35:375-385. (doi: 10.2989/10220119.2018.1518486)

Van Rooyen, M.W., Le Roux, A., Van der Merwe, H., Van Rooyen, N. & Geldenhuys, C. (2018) Long-term vegetation change (>20 years) in the plains habitat on the Goegap Nature Reserve, Succulent Karoo, South Africa. African Journal of Range and Forage Science 35:289-302. (doi: 10.2989/10220119.2018.1498802)

Walker, C., Milton, S.J., O'Connor, T.G., Maguire, J.M. & Dean, W.R.J. (2018) Drivers and trajectories of social and ecological change in the Karoo, South Africa. African Journal of Range and Forage Science 35:157-177. (doi: 10.2989/10220119.2018.1518263)

Bezuidenhout, H., Botha, J., Ramaswiela, T. & O'Connor, T. (2018) Key determinants of long-term compositional variation of the herbaceous layer in a semi-arid African savanna: Rainfall, soil type and plant species functional types. Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 37:1-14.

Van der Merwe, H. & Milton, S.J. (2018) Growth in three Karoo shrub species under various grazing treatments: the tracking of marked individuals over 25 years. African Journal of Range and Forage Science (online). (doi: 10.2989/10220119.2018.1508071)

Douglas, C.M.S., Cowlishaw, G., Harrison, X.A., Henschel, J.R., Pettorelli, N. & Mulligan, M. (2018) Identifying the determinants of tree distributions along a large ephemeral river. Ecosphere 9:e02223. (doi: 10.1002/ecs2.2223)

Van der Merwe, H. Du Toit, J.C.O., Van den Berg, L. & O'Connor, T.G. (2018) Impact of sheep grazing intensity on vegetation at the Arid Karoo Sotcking Rate Trial after 27 years, Carnarvon, South Africa. Journal of Arid Environments 155:36-45. (doi: 10.1016/j.jaridenv.2018.02.005)

Van der Merwe, H. & Geldenhuys, C. (2017) Proposed long-term monitoring protocol and applications for Aloeidendron dichotomum populations. South African Journal of Botany 109:253-262. (doi: 10.1016/j.sajb.2017.01.008)

Louw, M.A., le Roux, P.C., Meyer-Milne, E. & Haussmann, N.S. (2017) Mammal burrowing in discreet landscape patches further increases soil and vegetation heterogeneity in an arid environment. Journal of Arid Environments 141:68-75. (doi: 10.1016/j.jaridenv.2017.02.007)

Douglas, C.M.S., Mulligan, M., Harrison, X.A., Henschel, J.R., Pettorelli, N. & Cowlishaw, G. (2016) Widespread dieback of riparian trees on a dammed ephemeral river and evidence of local mitigation by tributary flows. PeerJ 4:e2622. (doi: 10.7717/peerj2622)

Muller, K., O'Connor, T.G. & Henschel, J.R. (2016) Impact of severe frost event in 2014 on woody vegetation within the Nama Karoo and semi-arid savanna biomes of South Africa. Journal of Arid Environments 133:112-121. (doi: 10.1016/j.jaridenv.2016.06.010)

Esler, K.J., Downsborough, L., Roux, D.J., Blignaut, J., Milton, S., le Maitre, D. & De Wit, M.P. (2016) Interdisciplinary and multi-institutional learning: reflecting on a South African case study investigating complex and dynamic environmental challenges. Current Opinion in Environmental Sustainability 19:76-86. (doi: 10.1016/j.cosust.2015.12.002)

Valverde, A., De Maayer, P., Oberholster, T., Henschel, J.R., Louw, M.K. & Cowan, D. (2016) Specific microbial communities associate with the rhizosphere of Welwitschia mirabilis, a living fossil. PlosOne 11(4):1-11. (doi: 10.1371/journal.pone.0153353)

Henschel, J.R. (2015) Locust times - monitoring populations and outbreak controls in relation to Karoo natural capital. Transactions of the Royal Society of South Africa 70:135-143. (doi: 10.1080/0035919X.2015.1046974)

Milton, S.J. & Dean, W.R.J. (2015) Repairing compound damage in arid ecosystems - challenges and controversies. Transactions of the Royal Society of South Africa 70:127-133. (doi: 10.1080/0035919X.2015.1046971)

Van der Merwe, H., Bezuidenhout, H. & Bradshaw, P.L. (2015) Landscape unit concept enabling management of a large conservation area: A case study of Tankwa Karoo National Park, South Africa. South African Journal of Botany 99:44-53. (doi: 10.1016/j.sajb.2015.03.187)

Van Rooyen, M.W., Le Roux, A., Geldenhuys, C., van Rooyen, N., Broodryk, N.L. & van der Merwe, H. (2015) Long-term vegetation dynamics (40 yr) in the Succulent Karoo, South Africa: effects of rainfall and grazing. Applied Vegetation Science 18:311-322. (doi: 10.1111/avsc.12150)

Du Toit, J.C.O. & O'Connor, T.G. (2014) Changes in rainfall patterns in the eastern Karoo, South Africa, over the past 123 years. Water SA 40(3):453-460. (doi: 10.4314wsa/v40i3.8)

Du Toit, J.C.O., van den Berg, L. & O'Connor, T.G. (2014) Fire effects on vegetation in a grassy dwarf shrubland at a site in the eastern Karoo, South Africa. African Journal of Range and Forage Science 2014:1-8. (doi: 10.2989/10220119.2014.913077)

Soderberg, K., Henschel, J.R., Swap, R.J. & Macko, S.A. (2014) Sulphur isotopes in the central Namib Desert ecosystem. Transactions of the Royal Society of South Africa 69:217-223. (doi: 10.1080/0035919X.2014.976778)

Williams, D., Pettorelli, N., Henschel, J.R., Cowlishaw, G. & Douglas, C.M.S. (2013) Impact of alien trees on mammal distributions along an ephemeral river in the Namib Desert. African Journal of Ecology 51:404-413. (doi: 10.1111/aje.12134)