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Cyanobacteria (blue-green algae) bloom on Lake Erie (United States) in 2009. These kinds of algae can cause harmful algal bloom. A harmful algal bloom (HAB), or excessive algae growth, sometimes called a red tide in marine environments, is an algal bloom that causes negative impacts to other organisms by production of natural algae-produced toxins, water deoxygenation, mechanical damage to ...
There are a number of environmental issues in Florida.A large portion of Florida is a biologically diverse ecosystem, with large wetlands in the Everglades.Management of environmental issues related to the everglades and the larger coastal waters and wetlands have been important to the history of Florida and the development of multiple parts of the economy of Florida, including the influential ...
The period from 1962 to 1965 was one of drought for the Everglades, and Levee 29 remained closed to allow the Biscayne Aquifer—the fresh water source for South Florida—to stay filled. [85] Animals began to cross Tamiami Trail for the water held in WCA 3, and many were killed by cars.
The following year, the state of Florida created the agency which eventually became the South Florida Water Management District, responsible for water quality, flood control, water supply and environmental restoration in 16 counties, from Orlando to the Florida Keys. [18] To control flooding, the Kissimmee River was straightened from 1962 to ...
The Trophic State Index (TSI) is a classification system designed to rate water bodies based on the amount of biological productivity they sustain. [1] Although the term "trophic index" is commonly applied to lakes, any surface water body may be indexed. The TSI of a water body is rated on a scale from zero to one hundred. [1]
The primary nutrients found in water due to nonpoint source pollution are nitrogen and phosphorus from fertilizers. An influx of these nutrients can lead to eutrophication within the water. This is when there is an excess of nutrients in water, thus leading to an explosion in the growth of algae. The algae can cover the lake and block sunlight ...
Both of these factors contribute to its potential contamination. Lowered water tables, primarily from over-pumping, could allow salt water intrusion without man-made interventions such as dam-like structures that control fresh and salt water levels in canals. Because the aquifer is so close to the surface, it is extremely vulnerable to surface ...
Water-borne diseases are also present as our drinking waters can be contaminated by cyanotoxins. If the HAB event results in a high enough concentration of algae the water may become discoloured or murky, varying in colour from purple to almost pink, normally being red or green. Not all algal blooms are dense enough to cause water discolouration.