Dr. J. William Louda

Research Professor
Department of Chemistry and Biochemistry
Ph.D., University of South Florida

Contact Information
Phone: (561) 297-3309
Email: blouda@fau.edu

Research Interests

My research centers on water quality and how that affects microalgal communities (phytoplankton, periphyton, epiphytes etc.). Within this context and beyond, I study photosynthetic and accessory pigments (chlorophylls, carotenoids, scytonemins, phycobilins). Pigment-based chemotaxonomy, the use of taxon-specific biomarkers to discern community structure and dynamics, is a main thrust in my research as well. Lately, I have been very involved in studying phosphorus pollution of south Florida waters from the overuse of equestrian waste in agri-businesses. Global climate change, especially rising carbon dioxide levels, is also studied as it impacts microalgal communities in both marine (“ocean acidification”) and fresh waters.


Recent Publications 

Louda, J. W., Mongkhonsri, P., and Baker, E.W. (2011) Chlorophyll degradation during senescence and death-III: Three to ten year experiments, implications for ETIO-series generation. Org. Geochem. 42: 688-699.

Szymczak-Żyła, M., Kowalewska, G. and Louda J.W. (2011) Sedimentary Chlorophyll-derivatives as indicators of marine eutrophication. Marine Chemistry 125: 39-48.

Grant C. and Louda J.W. (2013) Scytonemin-imine, a mahogany-colored UV/VIS sunscreen of cyanobacteria exposed to intense solar radiation Organic Geochemistry 65: 29-36.

Pisani O., Louda J.W. and Jaffe R. (2013) Biomarker assessment of spatial and temporal changes in the composition of flocculent material (floc) in a subtropical wetland. Environmental Chemistry 10: 424–436.

 Louda J.W., Grant C., Browne J. and Hagerthey S.E. (2015)Pigment-based chemotaxonomy and its application to Everglades periphyton. In: J. A. Entry, K. Jayachandrahan, A.D. Gottlieb and A. Ogram (Eds.)MICROBIOLOGY OF THE EVERGLADES ECOSYSTEM. Science Publishers. Chapter 13; pp. 287-347 plus appendices (pp.455-468) and color plate (p485). (ISBN 9781498711838.


Awards and Recognition

Fulbright Specialist Program. Scientific Visit to the Institute of Oceanology, Polish

Academy of Sciences, Sopot, Poland. June 4-19, 2011. United States Department of State, Bureau of Educational and Cultural Affairs, Council for International Exchange of Scholars.


Other Information

Professional Societies

Member           - American Chemical Society

Member            - Division of Geochemistry, American Chemical Society

Member-elect  - Phi Eta Tau Scholastic Society (Wright State University), Ohio

Member            - European Association of Organic Geochemists

Member-elect   - American Institute of Chemists

Member           - Florida Academy of Sciences

Chair (2000-2001)- Environmental and Chemical Sciences Section

Member           - American Society of Limnology and Oceanography

Member           - Estuarine Research Federation

Member           - Coastal Education and Research Foundation


Community outreach

Each year I represent the University and specifically the College of Science and the Environmental Sciences Program at the Lake Worth Lagoon Fest. This event is a community-wide outreach event which highlights the environment of Lake Worth Lagoon, its opportunities (fishing, boating, nature studies etc.) and its rejuvenation.

In 2016 south Florida experienced several cyanobacterial (aka “algal”) blooms and I provided information to the public through numerous media interviews (CBS,NBC, National Public Radio, Channel 5 (WPTV),WPTC-FaceTime, Palm Beach Post and others.