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Old 10-08-2006, 03:44 PM
1 posts, read 3,959 times
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South Sarasota County...5 years ago from coastal NJ...our "paradise" has become very depressing. Gulf conditions have deteriorated badly in the last 2 years. We're looking for an affordable town - east coast of Florida or just north... maybe Georgia, SC... the beaches are our draw.
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Old 10-08-2006, 06:37 PM
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My first experience with Red Tide was about a month ago on Anna Maria Island. My eyes were watery and I started coughing the way I cough when I get too close to the smoke of a campfire. It's nasty stuff. There were dead fish everywhere. It crept up to Pinellas County shortly after. If you've never experienced Red Tide, it's crushing. I don't know how people swim in it! I have two questions:

1. How long does it last? Does it usually go away by the end of October?
2. All of the publications say that there is no proof that it hurts humans. Why then does it kill Manatees?
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Old 10-08-2006, 06:41 PM
Location: Marion, IN
8,191 posts, read 28,115,521 times
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Red Tide is actually an algae bloom. It drifts around in the water in pockets. It has been around for centuries. I read a very good article on it once upon a time. If I can find it I will post it here.
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Old 10-08-2006, 06:44 PM
Location: Marion, IN
8,191 posts, read 28,115,521 times
Reputation: 7114
From Wikipedia, the free encyclopedia
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A "red tide" off the coast of La Jolla, California.Red tide is an estuarine or marine algal bloom and is caused by a species of dinoflagellates, often present in sufficient numbers (thousands or millions of cells per milliliter) to turn the water red or brown. The species responsible for red tides on the gulf coast of Florida is a dinoflagellate called Karenia brevis (formerly Gymnodinium breve.) It produces brevetoxins which produce respiratory irritation in humans.

Coastal water pollution produced by humans and systematic increase in sea water temperature appear to be causal factors in red tides. On the Pacific Coast of the U.S. there have been apparent increases in the occurrence of red tides since about 1991. These increases are correlated with a marine temperature rise of about one degree Celsius, and also with increased nutrient loading into ocean waters. Additionally, red tide can assume its dormant form if the water cools to a sufficient degree. When it does this it forms cysts which drop to the ocean floor and rebloom if the right conditions occur. As another example, non- red tide algal blooms in lakes and rivers may be caused by greatly increased amounts of phosphorus or nitrogen entering an aquatic ecosystem from either sewage systems or surface runoff of agricultural fertilizers. Some red tides on the Pacific coast have also been linked to occurrences of El Niño events. Red tides also occur in places where there are no obvious associated human activities.

Image of bioluminescent red tide event of 2005 at a beach in Carlsbad California showing brilliantly glowing crashing waves containing billions of Lingulodinium polyedrum dinoflagellates. The phenomenon is thought to have something to do with quorum sensing.Some red tides produce large quantities of toxins, such as saxitoxin, which disrupt the proper function of ion channels in neurons. Domoic acid, causative of neurological damage in certain marine mammals, is one toxin associated with red tides. The red tide toxins can induce neurological damage and death in marine mammals which feed on affected filter feeders. These include whales, seals, and otters. Red tide can also increase fish mortality; they are also accumulated in the digestive tracts of filter feeders. This bioaccumulation of toxins causes bivalves – like oysters and clams – collected in areas affected by algal blooms to be potentially dangerous for human consumption. Initial signs of poisoning from this toxin is tingling in the lips followed by a reduction of motor abilities and difficulty breathing and can be fatal if consumed in sufficient amounts. If these symptoms occur after eating shellfish, seek immediate medical treatment. Standard medical treatment is to give victims oxygen, or to hook them up to a breather. There exists no antidote, and the idea is to keep the person alive until the toxin has passed from the system.

There is more than one type of red tide, something that frequently goes unnoticed. For example, the red tide that affects the Gulf Region produces, in addition to the toxins that accumulate within filter feeders, an airborne vector that can cause difficulty breathing, especially for those with preexisting conditions, whereas that which occurs in the Northeast US has no airborne vector component. It should also be noted that red tide is far from being entirely understood.
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Old 10-08-2006, 08:08 PM
Location: Living in Paradise
5,702 posts, read 22,260,638 times
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Thumbs up Regional Red Tide Summaries

East Region: No event.

Northwest Region: No water samples were collected this week from northwest Florida.

Southwest Region: A bloom of the Florida red tide organism Karenia brevis, continues to impact the southwest Florida coast this week from Pinellas to Collier counties. A slight shift of the bloom to the south is evident this week with highest concentrations along the Sarasota, Charlotte and Collier County coasts. Medium to high concentrations have also been detected from the coast to 10 miles offshore between southern Pinellas County and southern Collier County. K. brevis concentrations have declined in Gasparilla Sound, Charlotte Harbor and Pine Island Sound in general, although several small areas of medium concentration were detected. Reports of fish kills have been received from northern Pinellas to southern Lee counties including St. Pete Beach, Boca Ciega Bay, Madeira Beach, Bradenton, Lido Beach and Siesta Key. Fish kills and respiratory irritation are possible between northern Pinellas County and Collier County.

Populations of the marine cyanobacteria Trichodesmium were observed only along the western edge of the K. brevis bloom offshore. Trichodesmium can collect at the water surface and appear brown, green or white. Although non-toxic, at high concentrations this bloom may be mistaken for an oil or sewage spill.

The Fish and Wildlife Research Institute’s (FWRI) Red Tide Status Line, a recording detailing red tide conditions throughout the state, is now available to callers to hear a recording detailing red tide conditions throughout the state. FWRI updates the recording each Friday by 5 p.m. after sampling efforts for the week have been completed and analyzed. To hear the information, call the Red Tide Status Line at: (866) 300-9399 (toll-free inside Florida only); or (727) 552-2448 (outside Florida).
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