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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 ...
In late 2008 and early 2009 (November–February) there was a massive bloom of Cochlodinium polykrikoides in the Sea of Oman, off the coast of Oman in the Persian Sea. [13] It was notable for being based on Cochlodinium polykrikoides rather than the Noctiluca scintillans (Noctiluca miliaris) that had been more usual in the immediately previous ...
Thus, red-tide blooms can have major level effects impacting the whole ecosystem. Additionally infected fish and shellfish pose a threat to the fishing industry and economy. [20] [22] K. brevis red tides have also been found to be a significant factor in the mortality of multiple species of sea turtles. [24]
Red tides in the Gulf of Mexico and toxic blue-green algae in inland waters are killing animals and stoking outrage in South Florida. 'Never seen it this bad': Toxic red tide hits Florida Skip to ...
Tidal range is the difference in height between high tide and low tide. Tides are the rise and fall of sea levels caused by gravitational forces exerted by the Moon and Sun, by Earth's rotation and by centrifugal force caused by Earth's progression around the Earth-Moon barycenter. Tidal range depends on time and location.
Red Tide caused by dinoflagellates. Picture taken off the coast of San Diego, California. Neurotoxic shellfish poisoning (NSP) is caused by the consumption of brevetoxins, which are marine toxins produced by the dinoflagellate Karenia brevis (among several others). These toxins can produce a series of gastrointestinal and neurological effects.
A Red tide is a discoloration of the sea water by pigmented cells like Gonyaulax spp., some of which may produce toxins. Gonyaulax spinifera has been connected to the production of yessotoxins (YTXs), a group of structurally related polyether toxins, which can accumulate in shellfish.
As the migrating tides stay fixed relative to the Sun a pattern of excitation is formed that is also fixed relative to the Sun. Changes in the tide observed from a stationary viewpoint on the Earth's surface are caused by the rotation of the Earth with respect to this fixed pattern. Seasonal variations of the tides also occur as the Earth tilts ...