Summary: Associate Professor in Soil Science at UFS (since 2016); NRF Y1 rated researcher; 46 peer reviewed publications on hydropedology and soil management; 5 peer reviewed book chapters and one book; 19 international and 48 national congress presentations; lead/involved in 12 externally funded research projects; produced 60+ scientific consultancy reports; received 11 awards/accolades for research and/or academic outputs.

Research focus: hydropedology, environmental soil science; soil physics; pedology

Qualifications

PhD. in Soil Science (UFS): Characterizing Sub-Surface Lateral flow in selected hillslope soils to facilitate hydrological predictions (2011).

M.Sc. Agric in Soil Science (UFS): Soil indicators of Hillslope Hydrology in the Bedford and Weatherley catchments (2008) – cum laude.

B.Sc. Agric (Hons) in Soil Science (UFS) in 2007 – cum laude.

B.Sc. Agric in Soil Science and Agronomy (UFS) in 2006.

Certificate in Environmental Law (UP) in 2017 – cum laude

Affiliations

South African Council of Natural Scientific Professions (SACNASP) – Pr.Sci.Nat.

Council Member of Soil Science Society of South Africa

Recent relevant publications and reports

• Van Tol, J.J., van Zijl, G.M., Kotze, E., Establishing soil rehabilitation guidelines for important NRM areas. Department of Environmental Affairs (2019 – 2021).
• Van Tol, J.J., van Zijl, G.M. & Julich, S., 2020. Importance of detail soil information for hydrological modelling in an urbanised environment. Hydrology, 7, 34; doi:10.3390/hydrology7020034.
• Van Tol, J.J., Julich, S., Bouwer, D. & Riddell, E.S., 2020. Hydrological response in a savanna hillslope under different rainfall regimes, Koedoe 62(2), a1602. https://doi. org/10.4102/koedoe.v62i2.1602.
• Du Preez, C.C., van Huyssteen, C.W., Kotze, E. & van Tol, J.J., 2020. Ecosystem services in sustainable food systems: operational definitions, concepts and applications, definitions. In Rusinamhodzi, L (ed). The Role of Ecosystem Services in Sustainable Food Systems. Elsevier, United Kingdom.
• Van Tol, J.J. & Le Roux, P.A.L., 2019. Hydropedological grouping of South African soil forms. South African Journal of Plant and Soil. https://doi.org/10.1080/02571862.2018.1537012
• Van Tol, J.J. & Lorentz, S.A., 2018 Hydropedological interpretation of soil distribution patterns to characterise groundwater/surface-water interactions. Vadose Zone Journal. https://doi:10.2136/vzj2017.05.0097
• Van Tol, J.J., Lorentz, S.A., van Zijl, G.M. & Le Roux, P.A.L., 2018. The contribution of hydropedological assessments to the availability and sustainable water, for all (SDG#6). In Lal, R., Horn, R. & Kosaki, T. (eds). Soil and Sustainable Development Goals. Catena-Schweizerbart, Stuttgart.
• Van Tol, J.J., Akpan, W., Maroyi, A., Mutengwende, N., Huchermeyer, N., Ngesi, S., Nqandeka, H.M., Mamera, M., Bradley, G. & Rowntree, K.M., 2018. The Mzimvubu Water Project: Baseline indicators for long-term impact monitoring. WRC project No. K5/2433. Water Research Commission.
• Mamera, M. & van Tol, J.J., 2018. Application of hydropedological information to conceptualise pollution migration from dry sanitation systems in the Ntabelanga area, South Africa.Air, Soil and Water Research. https:DOI: 10.1177/1178622118795485.
• Van Tol, J.J., Dzvene, A. & Le Roux, P.A.L., Schall, R., 2016. Development and evaluation of PedoTransfer Functions to predict Atterberg limits in South African soils using measured and morphological properties. Soil Use and Management, doi10.111/sum.12303.
• Van Tol, J.J., Akpan, W., Kanuka, G., Ngesi, S. & Lange, D. 2014. Soil erosion and dam dividends: Science facts and rural ‘fiction’ around the Ntabelanga Dam, Eastern Cape, South Africa. South African Geographical Journal. http://dx.doi.org/10.1080/03736245.2014.977814 Van Zijl, G.M., Bouwer, D., van Tol, J.J. & Le Roux, P.A.L., 2014. Efficient digital soil mapping: a case study from Namarroi, Mozambique. Geoderma. 219, 155 – 161.
• Van Tol, J.J., Le Roux, P.A.L., Lorentz, S.A., Hensley, M., 2013. Hydropedological classification of South African hillslopes. Vadoze Zone Journal. doi:10.2136/vzj2013.01.0007.

Accredited Journal Publications

1. Chingongue, O, van Tol, J.J., Ceronio, G. & Du Preez, C. Effects of tillage systems and cropping patterns on soil physical properties in Mozambique. Agriculture 10(448) doi:10.3390/agriculture10100448.
2. Nebo, G.I., Manyevere, A., Araya, T. & van Tol, J.J., 2020. Short-term impact of conservation agriculture on soil strength and saturated hydraulic conductivity in the South African semiarid areas. Agriculture 10(414) doi:10.3390/agriculture10090414.
3. Van Tol, J.J., Julich, S., Bouwer, D. & Riddell, E.S., 2020. Hydrological response in a savanna hillslope under different rainfall regimes, Koedoe 62(2), a1602. https://doi. org/10.4102/koedoe.v62i2.1602.
4. Van Tol, J.J., van Zijl, G.M. & Julich, S., 2020. Importance of detail soil information for hydrological modelling in an urbanised environment. Hydrology, 7, 34; doi:10.3390/hydrology7020034.
5. Bouwer, D., Le Roux, P.A.L. & Van Tol, J.J, 2020. Identification of hydropedological flowpaths in Stevenson–Hamilton catena from soil morphological, chemical and hydraulic properties, Koedoe 62(2), a1584. https://doi.org/10.4102/ koedoe.v62i2.1584 .
6. Mamera, M., van Tol, J.J., Aghoghovwia, M.P. & Mapetere, G.T., 2020. Community faecal management strategies and perceptions on sludge use in agriculture. International Journal of Environmental Research and Public Health. 7(11), 4128; https://doi.org/10.3390/ijerph17114128
7. Riddell, E., Nel, J., Van Tol, J., Fundisi, D., Jumbi, F., Van Niekerk, A. et al., 2020. Groundwater–surface water interactions in an ephemeral savanna catchment, Kruger National Park, Koedoe 62(2), a1583. https://doi.org/10.4102/koedoe. v62i2.1583
8. Janecke, B.B., Van Tol, J.J., Smit, I.P.J., Van Aardt, A.C., Riddell, E.S., Seaman, M.T. et al., 2020. Biotic and abiotic connections on a granitic catena: Framework for multidisciplinary research, Koedoe 62(2), a1600. https://doi.org/10.4102/ koedoe.v62i2.1600
9. Parwarda, C., van Tol, J.J., Tibugari, H. & Mandumbu, R., 2020. Characterisation of soil physical properties and resistance to erosion in different areas of soil associations. African Crop Science Journal, 28, 93 – 109. https://dx.doi.org/10.4314/acsj.v28i1.8
10. Van Tol, J.J., 2020. Hydropedology in South Africa: advances, applications and research opportunities. South African Journal of Plant and Soil. https://doi.org/10.1080/02571862.2019.1640300
11. Du Plessis, C., van Zijl, G.M., van Tol, J.J. & Manyevere, A., 2020. Machine learning digital soil mapping to inform gully erosion mitigation measures in the Eastern Cape, South Africa. Geoderma, https://doi.org/10.1016/j.geoderma.2020.114287
12. Van Zijl, G.M., van Tol, J.J., Bouwer, D., Lorentz, S.A. & Le Roux, P.A.L. 2020. Combining Historical Remote Sensing, Digital Soil Mapping and Hydrological Modelling to Produce Solutions for Infrastructure Damage in Cosmo City, South Africa. Remote Sensing, 12, 433. doi:10.3390/rs12030433.
13. Chichongue, O, Pelser, A., van Tol, J.J., du Preez, C. & Ceronio, G., 2019. Factors influencing the adoption of conservation agriculture practices among smallholder farmers in Mozambique. International Journal of Agriculture Extension, 7, 277 – 291. DOI:10.33687/ijae.007.03.3049.
14. Mavimbela, S.S.W., Ololade, O.O., van Tol, J.J. & Aghoghovwia, M.P., 2019. Characterizing landfill leachate migration potential of a semi-arid duplex soil. Heliyon, https://doi.org/10.1016/j.heliyon.2019.e02603
15. Van Zijl, G.M., van Tol, J.J., Le Roux, P.A.L. & Tinnefeld, M. 2019. A hillslope based digital soil mapping approach, for hydropedological assessments. Geoderma, doi.org/10.1016/j.geoderma.2019.113888
16. Flynn, T., van Zijl, G.M., van Tol, J.J., Botha, C., Rozanov, A., Warr B. & Clarke, C., 2019. Comparing algorithms to disaggregate complex soil polygons in contrasting environments. Geoderma, 352, 171 – 180.
17. Parwada, C. & van Tol, J.J., 2019. Influence of litter source on soil splash rates and organic carbon loss in different soil horizons. WaterSA 45, 12 – 19.
18. Van Tol, J.J. & Le Roux, P.A.L., 2019. Hydropedological grouping of South African soil forms. South African Journal of Plant and Soil. https://doi.org/10.1080/02571862.2018.1537012
19. Parwada, C & van Tol, J.J., 2019. Effects of litter quality on macroaggregates reformation and soil stability in different soil horizons. Environment, Development and Sustainability. https://doi.org/10.1007/s10668-018-0089-z
20. Mamera, M. & van Tol, J.J., 2018. Application of hydropedological information to conceptualise pollution migration from dry sanitation systems in the Ntabelanga area, South Africa.Air, Soil and Water Research. DOI:10.1177/1178622118795485.
21. Parwada, C & van Tol, J.J., 2018. Litter quality on particulate organic matter fractions dynamics and macroaggregate turnover rate in different soil horizons. European Journal of Soil Science. doi:10.1111/ejss.12726
22. Magomani, M.I. & van Tol, J.J., 2018. Impact of fire frequency on selected soil physical properties in a semi-arid savannah Thornveld. Acta Agriculturae Scandinavica, Section B - Plant Soil Science. DOI: 10.1080/09064710.2018.1495253.
23. Van Tol, J.J. & Lorentz, S.A., 2018 Hydropedological interpretation of soil distribution patterns to characterise groundwater/surface-water interactions. Vadose Zone Journal. https://doi:10.2136/vzj2017.05.0097
24. Jacobs, A.J., van Tol, J.J. & du Preez, C.C., 2018. Farmers perceptions of precision agriculture and the role of agricultural extension: a case study of crop farming in the Schweizer-Reneke region, South Africa. South African Journal of Agricultural Extension. http://dx.doi.org/10.17159/2413-3221/2018/v46n2a484
25. Chungag, A., van Tol, J.J. & Magagula, B.K. 2018. Effect of unguided cattle husbandry on selected soil physical properties in common property regimes in Alice, Eastern Cape, South Africa. Range Management and Agroforestry, 38, 176 – 180.
26. Parwada, C. & van Tol, J.J., 2017. Stability of Soil Organic Matter and Soil Loss Dynamics under Short-term Soil Moisture Change Regimes. Agrotechnology 6:159. doi: 10.4172/2168-9881.1000159.
27. Parwada, C & van Tol, J.J., 2017. Litter quality effects on soil stability and erodibility of selected South African soils. Global Advanced Research Journal of Agricultural Science, 6, 181 – 187.
28. Van Tol, J.J., Dzvene, A. & Le Roux, P.A.L., Schall, R., 2016. Development and evaluation of PedoTransfer Functions to predict Atterberg limits in South African soils using measured and morphological properties. Soil Use and Management, doi10.111/sum.12303.
29. Omar, M.Y., Maroyi, A. & van Tol, J.J., 2016. Floral diversity, composition and distribution in a montane wetland in Hogsback, the Eastern Cape Province, South Africa. Pakistan Journal of Botany, 48, 1861 – 1870.
30. Parwada, C. & van Tol, J.J., 2016. Soil properties influencing erodibility of soils in the Ntabelanga area, Eastern Cape, South Africa. Acta Agriculturae Scandinavica, Section B - Plant Soil Science. DOI:10.1080/09064710.2016.1220614.
31. Seaman, M.T., Watson M., Avenant, M., King, J., Joubert, A., Barker, C., Esterhuyse, S., Graham, D., Kemp, M., le Roux, P., Prucha, B., Redelinghuys, N., Rossouw, L., Rowntree, K., Sokolic, F., van Rensburg, L., van der Waal, B., van Tol, J. & Vos, T., 2016. DRIFT ARID: A method for assessing environmental water requirements (EWR’s) for non-perennial rivers. WaterSA, 42, 356 – 367.
32. Seaman, M.T., Watson M., Avenant, M., King, J., Joubert, A., Barker, C., Esterhuyse, S., Graham, D., Kemp, M., le Roux, P., Prucha, B., Redelinghuys, N., Rossouw, L., Rowntree, K., Sokolic, F., van Rensburg, L., van der Waal, B., van Tol, J. & Vos, T., 2016. DRIFT-ARID. Application of a method for Environmental Water Requirements (EWRs) in a non-perennial river (Mokolo River) in South Africa. WaterSA, 42, 368 – 383.
33. Prucha, B., Graham, D., Watson M., Avenant, M., Esterhuyse, S., Joubert, A., Kemp, M., King, J., le Roux, P., Redelinghuys, N., Rossouw, L., Rowntree, K., Seaman, M.T., Sokolic, F., van Rensburg, L., van der Waal, B., van Tol, J. & Vos, T., 2016. MIKE-SHE Integrated Groundwater and Surface Water model used to simulate scenario hydrology for input to DRIFT-ARID. The Mokolo River Case Study. WaterSA, 42, 384 – 398.
34. Parwada, C. & van Tol, J.J., 2016. The nature of soil erosion and possible conservation strategies in the Ntabelanga area, Eastern Cape, South Africa. Acta Agriculturae Scandinavica, Section B - Plant Soil Science. DOI: 10.1080/09064710.2016.1188979.
35. Van Tol, J.J., Akpan, W., Kanuka, G., Ngesi, S. & Lange, D. 2016. Soil erosion and dam dividends: Science facts and rural ‘fiction’ around the Ntabelanga Dam, Eastern Cape, South Africa. South African Geographical Journal. http://dx.doi.org/10.1080/03736245.2014.977814.
36. Van Tol, J.J., van Zijl, G.M., Riddell, E.S. & Fundisi, D., 2015. Application of hydropedological insights in hydrological modelling of the Stevenson Hamilton Research Supersite, Kruger National Park, South Africa. WaterSA 41, 525 – 533.
37. Patterson, D.G., Turner, D.P., Wiese L.D., van Zijl, G.M., Dowding, C.E., & van Tol, J.J., 2015. Spatial soil information in South Africa – situational analysis, limitations and challenges. South African Journal of Science. http://dx.doi.org/10.17159/sajs.2015/20140178.
38. Bouwer, D., Le Roux, P.A.L., van Tol, J.J. & van Huyssteen C.W., 2015. Using ancient and recent soil properties to design a conceptual hydrological response model. Geoderma. 241, 1 – 11.
39. Omar, M.Y., Le Roux, P.A.L. & van Tol, J.J., 2014. Interactions between stream channel incision, soil water levels and soil morphology in a wetland in the Hogsback area, South Africa. S. Afr. J Plant & Soil, 31, 187 – 194.
40. Van Zijl, G.M., Bouwer, D., van Tol, J.J. & Le Roux, P.A.L., 2014. Efficient digital soil mapping: a case study from Namarroi, Mozambique. Geoderma. 219, 155 – 161.
41. Van Tol, J.J., Le Roux, P.A.L., Lorentz, S.A., Hensley, M., 2013. Hydropedological classification of South African hillslopes. Vadoze Zone Journal. doi:10.2136/vzj2013.01.0007.
42. Van Tol, J.J., Barnard, J.H., Van Rensburg, L.D. & Le Roux, P.A.L., 2013. Soil depth inferred from electromagnetic induction measurements. African Journal of Agricultural Research, 8, 519 – 524.
43. Van Tol, J.J., Hensley, M. & Le Roux, P.A.L., 2013. Pedological criteria for estimating the importance of subsurface lateral flow in E-horizons of South African soils. Water SA, 31, 47 – 56.
44. Van Tol, J.J., Hensley, M. & Le Roux, P.A.L., 2012. Pedotransfer function to determine the water conducting macroporosity in South African soils. Water Science and Technology. 65, 550 – 557.
45. Van Tol, J.J., Le Roux, P.A.L., Hensley, M. & Lorentz, S.A., 2010. Soil as indicator of hillslope hydrological behaviour in the Weatherley Catchment, Eastern Cape, South Africa. Water SA. 36, 513 – 520.
46. Van Tol, J.J., Le Roux, P.A.L. & Hensley, M., 2010. Soil properties as indicators of hillslope hydrology in the Bedford catchments. S. Afr. J. Plant & Soil 27, 242 – 251.

Books and peer reviewed Chapters in Books

1. Du Preez, C.C., van Huyssteen, C.W., Kotze, E. & van Tol, J.J., 2020. Ecosystem services in sustainable food systems: operational definitions, concepts and applications, definitions. In Rusinamhodzi, L (ed). The Role of Ecosystem Services in Sustainable Food Systems. Elsevier, United Kingdom.
2. Van Tol, J.J., Lorentz, S.A., van Zijl, G.M. & Le Roux, P.A.L., 2018. The contribution of hydropedological assessments to the availability and sustainable water, for all (SDG#6). In Lal, R., Horn, R. & Kosaki, T. (eds). Soil and Sustainable Development Goals. Catena-Schweizerbart, Stuttgart. 102 - 117.
3. Soil Classification Working Group, 2018. Soil Classification: A Natural and Anthropogenic System for South Africa. ARC-Institute for Soil, Climate and Water, Pretoria.
4. Akpan, W. van Tol, JJ, Malambile, M & Nqalo, N. 2017. Science, ethnoscience and a dam: (Mis)reading the potential impacts of the Ntabelanga Dam, South Africa. In Akpan, W & Moyo, P. (eds.) Revisiting Environmental and Natural resource questions in Sub-Saharan Africa. Cambridge Scholars Publishers. 1 – 24.
5. Van Zijl, G.M., van Tol, J.J. & Riddell, E.S., 2016. Digital mapping for hydrological modelling. In: Zhang, G., Brus, D., Liu, F., Song, X. & Lagacherie, P. (eds), Digital Soil Mapping Across Paradigms, Scales and Boundaries. Springer, Singapore. 115 – 129.
6. Van Tol, J.J., Le Roux, P.A.L. & Hensley, M., 2011. Soil indicators of hillslope hydrology. In: B.O Gungor (eds), Principles-Application and Assessments in Soil Science. Intech, Turkey. 209 – 240.

Undergraduate modules at UFS (2016 -):

• SOIL2614: Soil classification and land-use planning
• SOIL3724: Soil pollution and management