Cover. Photomicrograph of Dolichospermum circinale collected July 9, 2016, from Lake Okeechobee, Florida. These living cells in a coiled filament are illuminated with wide-blue epifluorescence microscopy. Pigments in the cells glow yellow in vegetative cells, which have small orange spots-the aerotopes, and round red cells-the heterocytes. For more information on the USGS-the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment-visit http://www.usgs.gov or call 1-888-ASK-USGS.For an overview of USGS information products, including maps, imagery, and publications, visit http://www.usgs.gov/pubprod/.Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner.
AcknowledgmentsThe U.S. Geological Survey (USGS) has undertaken the task of documenting the cyanobacteria of the 2016 Lake Okeechobee and Okeechobee Waterway bloom in a readily available digital format. These images and associated names are needed for current and future research on algal blooms. This project was funded by the USGS Priority Ecosystem Study program. .................................................................................................................17 15. Macrospermum volzii ................................................................................................................. galeata ......................................................................................................29 27. Pseudanabaena mucicola .........................................................................................................
AbstractThe Lake Okeechobee and the Okeechobee Waterway (Lake Okeechobee, the St. Lucie Canal and River, and the Caloosahatchee River) experienced an extensive harmful algal bloom within Lake Okeechobee, the St. Lucie Canal and River and the Caloosahatchee River in 2016. In addition to the very visible bloom of the cyanobacterium Microcystis aeruginosa, several other cyanobacteria were present. These other species were less conspicuous; however, they have the potential to produce a variety of cyanotoxins, including anatoxins, cylindrospermopsins, and saxitoxins, in addition to the microcystins commonly associated with Microcystis.