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(2006) Data collected along the southwest coast of Florida between Tampa Bay and Sanibel Island on the abundance of the toxic dinoflagellate Karenia brevis from 1954 to 2002 were examined for spatial and temporal patterns. K. brevis was found to beapproximately 20-fold more abundant within 5 km of the shoreline than 20–30 km offshore. Overall, K. brevis was approximately 13–18-fold more abundant in 1994–2002 than in 1954–1963. In 1954–1963, K. brevis occurred primarily in the fall months. In 1994–2002, it was more abundant not only in the fall, but also in the winter and spring months. It is hypothesized that greater nutrient availability in the ecosystem is the most likely cause of this increase in K. brevis biomass, and the large increase in the human population and its activities in South Florida over the past half century is a major factor.
A new study has revealed that the red tide-causing species that has menaced Florida’s coastal environments and tourism-based economies is able to efficiently utilize carbon dioxide (CO2) at a range of disparate concentrations.
After a November 2018 finding that one type of airborne blue-green algae toxin was likely inhaled deep into human lungs, Florida Gulf Coast University (FGCU) researchers, supported by NOAA’s National Centers for Coastal Ocean Science (NCCOS), have evidence that airborne cyanobacteria toxins may travel more than a mile inland.
A roundup of resources and research conducted by NOAA, including twice weekly forecasts and a comprehensive base of facts, news, and studies on Red Tide and Harmful Algae Blooms (HABs)