The impact of rising ocean temperatures and climate change due to an increase in carbon dioxide and other greenhouse gases has the potential to create a severe economic devastation across the world and especially in the State of Florida.
As a native Floridian and avid ocean-junkie, the impending risks associated with climate change are of major importance to me. Each year more and more people are packing their lives up and moving to the coast of Florida to retire. The increase in coastal populations and the increase in development and decrease in ecosystems is devastating in itself, and when we add the rising sea levels, erosion, longer and more intense rainy seasons, larger and stronger hurricanes, and warmer waters causing longer lasting dinoflagellate (red-tide) blooms, the economics of all of these perils come in to play.
From the scallopers in Homosassa Springs, the sponge divers in Tarpon Springs, the Black Grouper fisherman of the Gulf Coast to the lobster-men of the Keys, Florida’s economy relies heavily on the waters surrounding our little peninsula. Rising ocean temperatures are causing coral bleaching which occurs as water temperatures rise above a tolerable level for the corals. This causes the corals to expel the covering of algae exposing the white skeleton and kills the coral. When large areas of reefs die off the ecosystem is left unbalanced. Those sponge divers will be left out of work. Increased carbon dioxide levels are causing acidification in our waters as well. Last year alone millions of scallops died due to the acid levels. If this trend continues, the scallops will be lost as well. Higher sea temperatures are also contributing to an influx of invasive species (Tiger Shrimp and Lion Fish especially) as well as marine diseases. Warmer waters promote growth of certain bacterium and virus, including lobster-shell disease and ‘the ich’ (Ichthyophthirius multifiliis). This can lead to wide-spread migration of species or even extinction. This will eventually lead to total devastation of population for these species and total loss of income for the fisherman.
Rising water temperatures not only effect marine life, it is also a cause of hurricane intensification. When the water warms the hurricanes grow not only larger but much stronger. Three-fourths of Florida’s population resides in coastal counties that generate 79% of the state’s total annual economy. These counties represent a built-environment and infrastructure whose replacement value in 2010 is $2.0 trillion and which by 2030 is estimated to be $3.0 trillion (FOACC). Take a look at the chart below. This shows hurricane probability from years 2000-2050 for the Miami-Dade area of Florida, hurricane alley as we call it, and a major factor in that 79%. By the year 2020, when replacement values are estimated at just shy of $3.0 trillion, the probability for a category 5 hurricane is at 42.5%!
Cited:
http://www.ncbi.nlm.nih.gov/pubmed/20580904
http://ocean.nationalgeographic.com/ocean/critical-issues-sea-temperature-rise/
http://www.climatehotmap.org/global-warming-effects/salt-water-species.html
http://www.floridaoceanscouncil.org/reports/Climate_Change_and_Sea_Level_Rise.pdf
http://www.demos.org/publication/economic-and-environmental-impacts-climate-change-florida