We love what we do at Forest Forecasting. We look forward to working with you to help you find the solutions you need.
We love what we do at Forest Forecasting. We look forward to working with you to help you find the solutions you need.
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Director and Chief Forest Scientist
Director and Chief Forest Scientist
Dr Dave Drew has worked widely in the "Growth and Yield" space in forestry for over 25 years in South Africa, Australia and the USA. He has a B.Sc. Forestry degree from Stellenbosch University (Stellenbosch, South Africa), an M.Sc. degree from the University of Natal (Durban, South Africa) and a PhD in forest growth and wood formation modelling from Monash University (Melbourne Australia). He has been part of some great teams at fantastic institutions over the years, including the CSIR (South Africa), CSIRO (Australia) and Stellenbosch University (South Africa).
Administrative and general support
Administrative and general support
Dave's wife, Sherrin Drew, provides administrative support for Forest Forecasting. She is the person to talk to about accounts, quotes and anything financial. And her other job is being a Mum!
Selected publications list
Selected publications list
In addition to products and solutions delivered through a range of projects, Dave has published widely throughout his career in the area of forest growth, yield and wood properties assessment. Some of these papers are listed below. Please contact us if you'd like to obtain a copy of one of these publications!
Erasmus, C, Drew, D, Booysen, M. (In Press). Dataset of dendrometer and environmental parameter measurements of two different species of the group of genera known as eucalypts in South Africa and Portugal. Data in Brief (In Press).
Keret, R., Schliephack, P.M., Stangler, D.F., Seifert, T., Kahle, H.P., Drew, D.M. and Hills, P.N., 2024. An open-source machine-learning approach for obtaining high-quality quantitative wood anatomy data from E. grandis and P. radiata xylem. Plant Science, 340, p.111970.
Gakenou, O. F., Martin, K. C., Germishuizen, I., & Drew, D. M. (2023). Parameter testing and application of the 3PG model for Eucalyptus grandis x urophylla in subtropical conditions in South Africa. CERNE, 29(1). https://doi.org/10.1590/01047760202329013236.
Mandigora, B. G., & Drew, D. M. (2022). Enhancing predictive precision of dominant height projection equations for eucalypts by incorporating rainfall and temperature terms. Southern Forests: a Journal of Forest Science, 84(4), 271-282. https://doi.org/10.2989/20702620.2022.2148587.
Drew, D. M., Downes, G. M., Seifert, T., Eckes-Shepard, A., & Achim, A. (2022). A Review of Progress and Applications in Wood Quality Modelling. Current Forestry Reports, 1-16.
Downes, G.M., Harrington, J.J., Drew, D.M., Lausberg, M., Muyambo, P. Watt, D., Lee, D.J. (2022). A Comparison of Radial Wood Property Variation on Pinus radiata between an IML PD-400 ‘Resi’ Instrument and Increment Cores Analysed by SilviScan. Forests 13(5):751.
Eckes-Shephard, A.H., Ljungqvist, F.C., Drew, D.M., Rathgeber, C.B.K. and Friend, A.D., 2022. Wood Formation Modeling-A Research Review and Future Perspectives. Frontiers in Plant Science 13: 837648-837648.
Saunders, A., Drew, D.M. and Brink, W., 2021. Machine learning models perform better than traditional empirical models for stomatal conductance when applied to multiple tree species across different forest biomes. Trees, Forests and People 6: p.100139. https://doi.org/10.1016/j.tfp.2021.100139.
Drew, D. M. (2021). Exploring new frontiers in forecasting forest growth, yield and wood property variation. Annals of Forest Science, 78(2), 1-2
Erasmus, J., Wessels, C.B., Drew, D.M. (2020). Mixed-effects models to predict the flexural lumber properties of Pinus patula trees planted at different spacing levels. Annals of Forest Science 77(3): 1 – 15.
Van Niekerk, P.B., Drew, D.M., du Toit, B., Dovey, S.B. (2020). Modelling the above-ground biomass of Eucalyptus grandis x nitens in south-eastern Mpumalanga, South Africa. Southern Forests 82(1): 15 - 23.
Seifert, E., Seifert, S., Vogt, H., Drew, D., van Aardt, J., Kunneke, A., Seifert, T. (2019). Influence of Drone Altitude, Image Overlap, and Optical Sensor Resolution on Multi-View Reconstruction of Forest Images. Remote Sensing 11(10): 1252.
Drew, D.M. and Downes, G.M. (2018). Growth at the microscale: Long term thinning effects on patterns and timing of intra-annual stem increment and wood property responses in radiata pine. Forest Ecosystems 5:32.
Nolan, R.H., Drew, D.M., O’Grady, A.P., Pinkard, E.A., Paul, K., Roxburgh, S.H., Mitchell, P.J., Bruce, J., Battaglia, M., Ramp, D. (2018). Safeguarding afforestation efforts against changes in climate and disturbance regimes. Forest Ecology and Management 424: 458-467.
Erasmus, J., Kunneke, A., Wessels, C.B. and Drew, D.M. (2018). The effect of planting density on Pinus patula stem curvature, microfibril angle and wood density. Forestry 91(3): 247–258.
Drew, D.M., Downes, G.M. and Bruce, J. (2017). Future wood properties in Australian forests: effects of temperature, rainfall and elevated CO2. Australian Forestry 80(4): 242 - 254.
von Gadow, K., Zhang, G.Q., Durrheim, G., Drew, D., Seydack, A. (2016). Diversity and Production in an Afromontane Forest. Forest Ecosystems 3(1): 15.
Drew, D.M., Downes, G.M. (2015). A model of stem growth and wood formation in Pinus radiata. Trees: Structure and Function 29: 1395 - 1413.
Zweifel, R., Drew, D.M., Schweingruber, F., Downes, G.M. (2014). Xylem as the main origin of stem radius changes in Eucalyptus. Functional Plant Biology 41(5): 520-534.
Drew, D.M., Downes, G.M. and Evans, R. (2010). Short-term growth responses and associated wood density fluctuations in variously irrigated Eucalyptus globulus. Trees: Structure and Function 25(2): 153 - 161.
Drew, D.M., Downes, G.M. and Battaglia, M (2010). CAMBIUM, a process-based model of daily xylem development in Eucalyptus. Journal of Theoretical Biology 264: 395 - 406.
Drew, D.M., O’Grady, A.P., Downes, G.M., Read, J. and Worledge, D. Drought and temperature induced wood property variation in irrigated and non-irrigated Eucalyptus globulus. Annals of Forest Science 66(4).
Drew, D.M. and Downes, G.M. (2009). The use of precision dendrometers in research on daily stem size and wood property variation: a review. Dendrochronologia 27: 159 - 172.
Drew, D.M., Downes, G.M., Grzeskowiak, V. and Naidoo, T. (2009). Differences in daily stem size variation and growth in two hybrid eucalypt clones. Trees: Structure and Function 23: 585 - 595.
Downes, G.M., Drew, D.M., Battaglia, M. and Schulze D. (2009). Measuring and modelling stem growth and wood formation: an overview. Dendrochronologia 27: 147 - 157.
Downes, G.M. and Drew, D.M. (2008). Climate and growth influences on wood formation and utilisation. Southern Forests 70(2): 155-167.
Drew, D.M., O’Grady, A.P., Downes, G.M., Read, J. and Worledge, D. (2008). Daily stem growth patterns in irrigated and non-irrigated Eucalyptus globulus. Tree Physiology 28: 1573-1581.
Dye, P.J., Jacobs, S.M., Drew, D. (2004). Verification of 3-PG growth and water-use predictions in twelve Eucalyptus plantation stands in Zululand, South Africa. Forest Ecology and Management 193:197 – 218
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