Summary: Professor (full) in Soil Science; President of the Soil Science Society of South Africa; Chair of IUSS Working Group on Hydropedology; NRF C2 rated researcher; 79 peer reviewed publications; 8 peer reviewed book chapters and 1 book; 25 international and 65 national congress presentations; lead/involved in 19 externally funded research projects; produced 100+ scientific consultancy reports; received numerous 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

President of the Soil Science Society of South Africa (2023 - 2025 

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

South African Soil Surveyors Association

Recent relevant publications and reports

1. Van Tol, J.J., 2024. Mapping and understanding degradation of alpine wetlands in the northern Maloti-Drakensberg, southern Africa. Journal of Mountain Science, 21, 2956 – 2966.  https://doi.org/10.1007/s11629-024-8671-3.
2. Strydom, T., Smit, I.P.J., & van Tol, J.J., 2024. The effect of time since last fire occurrence on selected soil hydrological properties in a South African savanna. Plant & Soil, https://doi.org/10.1007/s11104-024-06763-y
3. Van Tol, J.J. & Bouwer, D., 2024. Hydropedology of South African soil forms and families. WaterSA, 50(2), 236 – 245. https://doi.org/10.17159/wsa/2024.v50.i2.4094.
4. Malongweni, S.O. & van Tol, J.J., 2024. Effects of herbivory, fire, and vegetation type on soil compaction and aggregate stability in a semi-arid savanna. Environment, Development and Sustainability. https://doi.org/10.1007/s10668-024-04489-6
5. Van Tol, J.J., & Kotze, E. Below ground carbon storage of Forest4People project. TU Munich (2023 – 2025)
6. Van Tol, J.J., Kotze, J.J. & Le Roux, J.J. Towards a Landslide Early Warning System for South Africa (LEWSSA). Water Research Commission (2023 – 2025).
7. Van Tol, J.J., Job, N., Bouwer, D., Murugan, S. & Le Roux, P.A.L., 2023. Hydropedological Assessment Guidelines: Theory and application in a South African wetland management context. Integrating hydropedology in wetland delineation and management guidelines. WRC Report No. TT 925/23. Water Research Commission (2021 – 2024). 
8. Van Zijl, G.M. & van Tol, J.J., 2024. Digital soil mapping enables informed decision-making to conserve soils within protected areas. South African Journal of Plant and Soil. 40, 216 – 226. https://doi.org/10.1080/02571862.2023.2255158 
9. Kotze, J.J., Mc Lean, C, van Tol, J.J., 2023. Digitally mapping soil carbon of the uThukela headwater catchment in the Maloti-Drakensberg, a remote Afromontane mountain region. South African Geographical Journal.  https://doi.org/10.1080/ 03736245.2023.2272896.
10. Kotze, J.J., van Tol, J.J. & Clark, V.R., 2023. Africa’s First Alpine and Transboundary Long-Term Socioecological Research Platform. 43(3). Mountain Research and Development. https://doi.org/10.1659/mrd.2023.00035.
11. Van Tol, J.J. & van Zijl, G.M., 2022. South Africa needs a hydrological soil map: a case study from the upper uMgeni catchments. Water SA, 48(4) 335 – 347. https://doi.org/10.17159/wsa/2022.v48.i4.3977.
12. Harrison, R.L., van Tol, J.J. & Amiotte-Suchet, P., 2022. Hydropedological characteristics of the Cathedral Peak Research Catchments. Hydrology, 9, 189. https://doi.org/10.3390/ hydrology9110189.
13. Julich, S., Moorcroft, M.A., Feiger, K.H. & van Tol, J.J., 2022. The impact of overgrazing on water fluxes in a semi-arid watershed – The suitability of watershed scale modeling in a data scarce area. Journal of Hydrology: Regional Studies. https://doi.org/10.1016/j.ejrh.2022.101178.

Accredited Journal Publication

1. Van Tol, J.J., 2024. Mapping and understanding degradation of alpine wetlands in the northern Maloti-Drakensberg, southern Africa. Journal of Mountain Science, 21, 2956 – 2966.  https://doi.org/10.1007/s11629-024-8671-3.
2. Van Aardt, A.C., de Jager, J.C.L. & van Tol, J.J., 2024. Firebreaks and Their Effect on Vegetation Composition and Diversity in Grasslands of Golden Gate Highlands National Park, South Africa. Diversity. 16, 373. https://doi.org/10.3390/d16070373. 
3. Strydom, T., Smit, I.P.J., & van Tol, J.J., 2024. The effect of time since last fire occurrence on selected soil hydrological properties in a South African savanna. Plant & Soil, https://doi.org/10.1007/s11104-024-06763-y
4. Van Tol, J.J. & Bouwer, D., 2024. Hydropedology of South African soil forms and families. WaterSA, 50(2), 236 – 245. https://doi.org/10.17159/wsa/2024.v50.i2.4094.
5. Strydom, T., Smit, I.P.J., & van Tol, J.J., 2024. Short and long-term fire effects on soil C and N in an African savanna. Geoderma Regional. https://doi.org/10.1016/ j.geodrs.2024.e00802.
6. Malongweni, S.O. & van Tol, J.J., 2024. Effects of herbivory, fire, and vegetation type on soil compaction and aggregate stability in a semi-arid savanna. Environment, Development and Sustainability. https://doi.org/10.1007/s10668-024-04489-6
7. Van Zijl, G.M. & van Tol, J.J., 2024. Digital soil mapping enables informed decision-making to conserve soils within protected areas. South African Journal of Plant and Soil. 40, 216 – 226. https://doi.org/10.1080/02571862.2023.2255158 
8. Malongweni, S.O. & van Tol, J.J., 2023. Medium-term interactive effects of herbivores and plant life form on the biochemistry of shallow sandy soils in a protected semi-arid savanna. Environmental Systems Research. 12:38 https://doi.org/10.1186/s40068-023-00320-9 
9. Kotze, J.J., Mc Lean, C, van Tol, J.J., 2023. Digitally mapping soil carbon of the uThukela headwater catchment in the Maloti-Drakensberg, a remote Afromontane mountain region. South African Geographical Journal.  https://doi.org/10.1080/ 03736245.2023.2272896.
10. Kotze, J.J., van Tol, J.J. & Clark, V.R., 2023. Africa’s First Alpine and Transboundary Long-Term Socioecological Research Platform. 43(3). Mountain Research and Development. https://doi.org/10.1659/mrd.2023.00035.
11. Smit, I.E., van Zijl, G.M., Riddell, E.S. & van Tol, J.J., 2023. Examining the value of hydrological soil data on hydrological modelling at different scales in the Sabie catchment, South Africa. Vadose Zone Journal. https://doi.org/10.1002/vzj2.20280
12. Malongweni, S.O. & van Tol, J.J., 2023. Influence of herbivores and trees on soil biochemical properties of a semi-arid savanna. Koedoe. 10.4102/koedoe.v65i1.1742
13. Smit, I.E., van Zijl, G.M., Riddell, E.S. & van Tol, J.J., 2023. Downscaling legacy soil information for hydrological soil mapping using multinomial logistic regression. Geoderma, https://doi.org/10.1016/j.geoderma.2023.116568
14. Seboko, K.R., van Tol, J.J. & Kotze, E., 2023. Predicting soil carbon in granitic soils using Fourier-transform mid-infrared (FT-MIR) spectroscopy: the value of database disaggregation. South African Journal of Plant and Soil, 40, 1 – 11. https://doi.org/10.1080/02571862.2023.2180098   
15. Elumalai, V., Rajmohan. N, Sithole, B, Li, P, Uthandi, S. & van Tol J., 2023. Geochemical evolution and the processes controlling groundwater chemistry using ionic ratios, geochemical modelling and chemometric analysis in a semi-arid region of South Africa. Chemosphere. https://doi.org/10.1016/j.chemosphere.2022.137179
16. Kotze, J.J. & van Tol, J.J., 2023. Extrapolation of Digital Soil Mapping approaches for soil organic carbon stock predictions in an Afromontane Environment. Land, 12, 520. https://doi.org/10.3390/land12030520
17. Van Tol, J.J. & van Zijl, G.M., 2022. South Africa needs a hydrological soil map: a case study from the upper uMgeni catchments. Water SA, 48(4) 335 – 347. https://doi.org/10.17159/wsa/2022.v48.i4.3977.
18. Harrison, R.L., van Tol, J.J. & Amiotte-Suchet, P., 2022. Hydropedological characteristics of the Cathedral Peak Research Catchments. Hydrology, 9, 189. https://doi.org/10.3390/ hydrology9110189.
19. Julich, S., Moorcroft, M.A., Feiger, K.H. & van Tol, J.J., 2022. The impact of overgrazing on water fluxes in a semi-arid watershed – The suitability of watershed scale modeling in a data scarce area. Journal of Hydrology: Regional Studies. https://doi.org/10.1016/j.ejrh.2022.101178
20. Malongweni, S.O. & van Tol, J.J., 2022. Fire, Herbivores, and Vegetation Type Shape Soil Biochemistry in Sodic Patches of a Semi-Arid Savanna Ecosystem. Land. https://doi.org/10.3390/land11081148
21. Mamera, M., van Tol, J.J. & Aghoghovwia, M.P., 2022. Treatment of faecal sludge and sewage effluent by pinewood biochar to reduce wastewater bacteria and inorganic contaminants leaching. Water Research. https://doi.org/10.1016/j.watres.2022.118775
22. Chichongue, Ó., van Tol, J.J., Ceronio, G.M., du Preez, C.C. & Kotzé, E., 2022. Short-Term Effects of Tillage Systems, Fertilization, and Cropping Patterns on Soil Chemical Properties and Maize Yields in a Loamy Sand Soil in Southern Mozambique. Agronomy, 12, 1534. https://doi.org/10.3390/agronomy12071534 
23. Bouma, J., Bonfante, A., Basile, A., van Tol, J., Hack-ten Broeke, M.J.D., Mulder, M., Heinen, M., Rossiter, D.G., Poggio, L. & Hirmas, D.R., 2022. How can pedology and soil classification contribute towards sustainable development as a data source and information carrier? Geoderma. https://doi.org/10.1016/j.geoderma.2022.115988.
24. Smit, I.E. & van Tol, J.J., 2022. Impacts of Soil Information on Process-Based Hydrological Modelling in the Upper Goukou Catchment, South Africa. Water 2022, 14, 407. https://doi.org/10.3390/w14030407
25. Harrison, R.L., van Tol, J.J. & Toucher, M., 2022. Using hydropedological characteristics to improve modelling accuracy in Afromontane catchments. Journal of Hydrology: Regional Studies. https://doi.org/10.1016/j.ejrh.2021.100986
26. Mamera, M., van Tol, J.J., Aghoghovwia, M.P., Nhantumbo, A.B.J.C., Chabala, L.M., Cambule, A., Chalwe, H., Mufume, J.C., Rafael, R.B.A., 2021. Potential Use of Biochar in Pit Latrines as a Faecal Sludge Management Strategy to Reduce Water Resource Contaminations: A Review. Appl. Sci. 11, 11772. https://doi.org/10.3390/app112411772.
27. Clark, V.R., Mukwada, G., Hansen, M., Adelabu, S., Magaiza, G., Le Roux, A., Bredenhand, E., Otomo, P.V., Steenhuisen, S., Franke, A., van Tol, J., Mathinya, N. & Makombe, R., 2021. The Afromontane Research Unit: Driving connections and capacity building for the sustainable development of Southern African Mountains. Mountain Research and Development.  42, 1 – 5.doi.org/10.1659/MRD-JOURNAL-D-21-00038.   
28. Van Tol, J.J., Bieger, K. & Arnold, G., 2021. A Hydropedological approach to simulate streamflow and soil water contents with SWAT+. Hydrological Processes. DOI:10.1002/hyp.14242.  
29. Seboko, K.R., Kotze, E., van Tol, J.J. & van Zijl, G.M., 2021. Characterization of Soil Carbon Stocks in the City of Johannesburg. Land, 10, 83.  https://doi.org/10.3390/land10010083
30. Van Zijl, G.M., Turner, D., Paterson, G., Koch, J., van Tol, J.J., Barichievy, K., Clarke, C., du Plessis, M & van Deventer, P., 2020. The new soil classification system in South Africa, its history, important changes made and implications for users. South African Journal of Plant and Soil, 37, 331 – 342. https://doi.org/10.1080/02571862.2020.1815244.
31. Mamera, M., van Tol, J.J., Aghoghovwia, M.P. & Kotze, E., 2020. Sensitivity and Calibration of the FT-IR Spectroscopy on Concentration of Heavy Metal Ions in River and Borehole Water Sources. Applied Sciences 10, 7785; doi:10.3390/app10217785
32. Chingongue, O, van Tol, J.J., Ceronio, G. & Du Preez, C., 2020. Effects of tillage systems and cropping patterns on soil physical properties in Mozambique. Agriculture 10(448) doi:10.3390/agriculture10100448.
33. 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.
34. 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.
35. 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.
36. 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 .
37. 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
38. 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
39. 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
40. 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
41. Van Tol, J.J., 2020. Hydropedology in South Africa: advances, applications and research opportunities. South African Journal of Plant and Soil.  37, 23 – 33. https://doi.org/10.1080/02571862.2019.1640300
42. Parwarda, C., Magomani, M.I. & van Tol, J.J., 2020. Impacts of different prescribed fire frequencies on selected soil chemical properties in a semi-arid savannah thornveld. Cogent Environmental Science 6(1):1868171. DOI:10.1080/23311843.2020.1868171
43. 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
44. 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.
45. Parwada, C. & Van Tol, J.J., 2020. Mapping Soil Erosion Sensitive Areas in Organic Matter Amended Soil Associations in the Ntabelanga area, Eastern Cape Province, South Africa. Journal of Applies Science and Environmental Management, 24, (9) 1693-1702. https://dx.doi.org/10.4314/jasem.v24i9.29.
46. 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. 
47. 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 
48. 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
49. 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.
50. 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.
51. 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
52. 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
53. 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.  
54. 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
55. 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.
56. 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
57. 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
58. 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.
59. 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.
60. 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.
61. 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.
62. 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.
63. 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.
64. 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.
65. 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.
66. 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.
67. 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. 
68. 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.
69. 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.
70. 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.
71. 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.
72. 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.
73. 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.
74. 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.
75. 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.
76. 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.
77. 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.
78. 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.
79. 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. Harrison, R.L., & van Tol, J.J., 2022. Digital soil mapping for hydropedological purposes of the Cathedral Peak Research Catchments, South Africa. In: Adelabu, S. et al. (Eds): Remote sensing of African Mountains. Chapter 10. Springer Nature.
2. Mathinya, N.V., Clark, V.R., van Tol, J.J. & Franke, A.C., 2022. Resilience and sustainability of the Maloti-Drakensberg Mountain System: A case study on the Upper uThukela catchment. In .Misiune, I., Depellegrin, D. & Vigil, L.E. (eds) Human-Nature Interactions, Springer, Switzerland. 155 – 167.
3. 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.
4. 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.
5. Soil Classification Working Group, 2018. Soil Classification: A Natural and Anthropogenic System for South Africa. ARC-Institute for Soil, Climate and Water, Pretoria.
6. 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.
7. 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.
8. 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.

Other publications

1. Van Tol, J.J., Franke, A.C., & Le Roux, J.J., 2023. Soil Erosion: Southern Africa`s water tower is endangered. Food & Agricultural Policy, Welternährung.
2. Van Tol, J.J., Bouwer, D. & Le Roux, P.A.L., 2021. DWS guidelines for hydropedological surveys and minimum requirements. Department of Water and Sanitation.
3. Van Tol, J.J. & van Zijl, G.M., 2020. Regional soil information for hydrological modelling. Water Wheel, April 2021.
4. Van Tol, J.J., Le Roux, P.A.L. & Lorentz, S.A., 2017. The science of hydropedology – linking soil morphology with hydrological processes. Water Wheel, June/July 2017.

Undergraduate modules at UFS (2016 -):

• SOIL3774: Soil classification and land-use planning (re-developed module)
• SOIL4834: Advanced classification and geomorphology
• SOIL3714: Soil fertility management
• SOIL3724: Soil pollution and management (considerable contribution to content)