CESI Research Project 01-4

Baseline Research >> Current Page


Linking Hydrology to Biological Recovery After Cessation of Long-term Phosphorus Enrichment at the Experimental Dosing Facility in Everglades National Park
Evelyn E. Gaiser, Joel C. Trexler, & Jennifer H. Richards

Photo of the experimental dosing facility in Everglades National Park
Photo of an Experimental Dosing Facility in Everglades National Park

Photo Courtesy of Joel Trexler


The effects of nutrient enrichment in the Florida Everglades are of considerable concern with regards to ecosystem restoration. The famed River of Grass is widely thought to have been a historically nutrient-poor environment. Today, however, the Everglades are subject to higher levels of enrichment from a variety of sources.

This five-year study involved constructing large-scale experimental phosphorus dosing stations in Everglades National Park. During the project period, ecosystem parameters were carefully monitored in response to specific concentrations up to 30 parts per billion (ppb). The study documented substantial changes in both periphyton and aquatic plant communities, and provides valuable insight into the recovery of marsh systems in the absence of continued enrichment.


Please contact us for a copy of this report


Related Publications


Gaiser, E., J. Richards, J. Trexler, R. Jones and D. Childers. 2006. Periphyton responses to eutrophication in the Florida Everglades: Cross-system patterns of structural and compositional change. Limnology and Oceanography 51(2): 617-630

Gaiser, E. E., J. Trexler, J. Richards, D. Childers, D. Lee, A. L. Edwards, L. Scinto, K. Jayachandran, G. Noe and R. Jones. 2005. Cascading ecological effects of low-level phosphorus enrichment in the Florida Everglades. Journal of Environmental Quality 34: 403-407.

Gaiser, E. E., L. J. Scinto, J. H. Richards, K. Jayachandran, D. L. Childers, J. D. Trexler and R. D. Jones. 2004. Phosphorus in periphyton mats provides best metric for detecting lowlevel P enrichment in an oligotrophic wetland. Water Research 38: 507-516.


Contact the principal investigator directly with questions about this study.

Last updated: June 2, 2021

Park footer

Contact Info

Mailing Address:

40001 State Road 9336
Homestead, FL 33034-6733


305 242-7700

Contact Us