Ph.D. Clemson University, 1987
Office: PH 3431
Research Lab: SLW 2235
Phone: (618) 650-2728
Research Interests: Dr. Retzlaff is currently the research co-director of the St. Louis metropolitan area research collaboration (G.R.E.E.N. – Green Roof Environmental Evaluation Network) based at Southern Illinois University Edwardsville (SIUE). His main areas of research interest include: evaluation of green roof and green wall technologies, sustainable green infrastructure, and sustainable use of residual waste products.
Research Opportunities: Dr. Retzlaff is currently looking for student/faculty research collaborators in the following areas: integration of sustainable practices into academic curriculum, large data set statistical and/or modeling analysis, evaluation of native plant performance in green infrastructure. Potential student/faculty research collaborators will share: LARGE collaborative group (faculty/students/industry collaborators), access to MANY sustainable research sites locally, regionally, and nationally, a NEW environmental sciences research laboratory, and lab/sampling tools. For more information, please contact me.
Alsup, S., S. Ebbs, and W. Retzlaff. 2009. The exchangeability and leachability of metals from select green roof growth substrates. Urban Ecosystems. Urban Ecosyst 13:91-111
Alsup, S., S. Ebbs, L. Battaglia, and W. Retzlaff. 2011. Heavy metals in leachate from simulated green roof systems. Ecol. Eng. 37:1709-1717
Morgan, S., I. Alyaseri, and W. Retzlaff. 2011. Suspended solids in and turbidity of runoff from green roofs. International J Phytotechnology. 13:179-193.
Brugam, R., M. Ketterer, L. Maines, ZH. Lin, and W. Retzlaff. 2012. Application of a simple binary mixing model to the reconstruction of lead pollution sources to two Mississippi River floodplain lakes. J of Paleolimnology 47:101-112
Pawlow, L and W. Retzlaff. 2012. Undergraduate researchers become change agents for sustainability. CUR Quarterly 33:28-32
Alsup, S., S. Ebbs, L. Battaglia, and W. Retzlaff. 2013. Green roof systems as sources or sinks influencing heavy metal concentrations in runoff. J Environ Eng 139:502-508
Morgan, S., S. Celik, and W. Retzlaff. 2013. Green roof storm water runoff quality and quantity. J Environ Eng 139:471-478
Alyaseri, I., S. Morgan, and W. Retzlaff. 2013. Using turbidity to determine total suspended solids in stormwater runoff from green roofs. J Environ Eng 139:822-828
Karanam, H., W. Retzlaff, S. Morgan, and S. Celik. 2013. Experimental and theoretical analysis of evapotranspiration in green roof systems. Pp. 1055-1066. IN: Causes, Impacts and Solutions to Global Warming (Eds. I. Dincer, C.O. Colpan, and F. Kadioglu). Springer New York
Karthic, I., R. Brugam, W. Retzlaff, and K. Johnson. 2013. The impact of nitrogen contamination and river modification on a Mississippi River floodplain lake. Science of Total Environ 463-364:734-742