an algal bloom of sufficient quantity to cause discoloration (often red) in a body of water; red tides can potentially cause irritation or death to exposed creatures
A bloom of dinoflagellates that causes reddish discoloration of coastal ocean waters. Certain dinoflagellates of the genus Gonyamlax produce toxins that kill fish and contaminate shellfish. Discoloration of seawater caused by dinoflagellates during periodic blooms (population increases). Toxic substances released by these organisms into the water may be lethal to fish and other marine life, and they irritate the human respiratory system. Coastal resorts sometimes close when breaking waves release the toxic substances into the air. The causes of red tide are uncertain; it may require the confluence of several natural phenomena, in which human influence may or may not play a part
The reddish discolouration of surface waters, usually coastal, caused by high concentration of certain micro-organisms, some of which can be toxic and can result in mass killing of other marine animals It is often transported by real tides
The proliferation of a toxic marine plankton that often causes fish kills and can contaminate certain edible shellfish Red tide is a natural phenomenon that can be stimulated by the addition of nutrients
seawater that is discolored by large numbers of certain dinoflagellates that produce saxitoxin
A growth of dinoflagellates (single-celled plant-like animals) in surface waters in such quantities as to color the sea red and kill fish
A proliferation of a marine plankton toxic and often fatal to fish, perhaps stimulated by the addition of nutrients A tide can be red, green, or brown, depending on the coloration of the plankton
The reddish discoloration of surface waters, usually coastal, caused by high concentrations of certain microorganisms, some of which can be toxic and can result in mass killing of other marine animals It is often transported by real tides 2 Algae bloom involving dinoflagellate phytoplankton species that naturally manufacture biotoxins Depending upon species, red tides can cause fish kills and several types of shellfish poisoning in human consumers
An overgrowth of one of a number of dinoflagellates that causes discoloration of the water Some organisms that cause red tides can release neurotoxins
A phenomena that occurs near the surface of the sea and is caused by an abnormal growth of dinoflagellates, single-celled plankton The toxin secreted by the dinoflagellates is capable of killing fish through a cyclic effect As decomposition continues, it creates more nutrients, which feed the plankton bloom, and the greater quantities can color the water red
Discoloration of surface waters, most frequently in coastal zones, caused by large concentrations of microorganisms
A reddish discoloration of ocean water, caused by large numbers of dinoflagellates that kill fish and other organisms by releasing poisons into the water
Algal bloom involving dinoflagellate phytoplankton species, such as Gonyaulax monilata and Ptychodiscus brevis, which naturally manufacture biotoxins, can cause fish kills and several types of shellfish poisoning in people
reddish-brown discoloring of surface water from blooming populations of dinoflagellate phytoplankton; since long associated with nutrient pollution
A reddish discolouration of coastal waters due to concentrations of certain toxin-producing dinoflagellates (microscopic planktonic organisms)
The term applied to toxic algal blooms caused by several genera of dinoflagellates (Gymnodinium and Gonyaulax) which turn the sea red and are frequently associated with a deterioration in water quality The color occurs as a result of the reaction of a red pigment, peridinin, to light during photosynthesis These toxic algal blooms pose a serious threat to marine life and are potentially harmful to humans The term has no connection with astronomic tides However, its association with the word "tide" is from popular observations of its movements with tidal currents in estuarine waters