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red tide

            Every year throughout the season mostly near warm coastal waters, the surface of the ocean changes to a bright red. This occurrence is due to what is called the red tide. The Old Testament might have the earliest known reference to a red tide when it describes the waters of the Nile turning to blood (1a). .
             Red tides actually have nothing to due with tides. The red tide is a naturally occurring concentration of a rapidly producing "bloom" of microscopic algae known as Gymnodinium breve, a type of dinoflagellate (5). When this reproduction happens they are visible and become discolored patches of ocean water, usually red, but can also be orange, brown, or bright green. Gymnodinium breve is a type of harmful algal blooms (HABs) that is a single-celled organism, which photosynthesizes using chlorophyll and has two flagella that propels it through a water column (5). Given the right condition when temperature, salinity and nutrients reach a certain level, the increase of G. breve will occur (3). Some also think that high temperature with a lack of wind and rainfall might be the case of red tide blooms.
             Dinoflagellates are the microscopic organism that is the cause of a red tide and belong to the division Pyrrhophyta. They contain chlorophyll A and C and can store glucose as starch (11). They are also a part of the "invisible forest" known as phytoplankton and sometimes called the "bad boys." Dinoflagellates are unicellular, flagellated and prefer warm water areas. They can also come in different forms. They are responsible for poisoning forms of sea and human life, but not all dino's are bad. Some dino's are photosynthetic, which means they can produce their own food using the energy from the sun. By doing that, they also are able to provide food for other organisms. Zooxanthellae are also good dino's and can be found in coral and anemones. They provide food for their "hosts" in the structure of glucose.


Essays Related to red tide

1. Red Tides

... "bloom", of microscopic, single-celled algae named Karenia brevis, (aka K. brevis), or single-celled organisms called dinoflagellates. Most oceanographers and scientists prefer the term harmful algal blooms over the term red tide because the water is not always discolored when the blooms cause damage and because it is often harmless even when the water is discolored. There are still many differing theories ... and fish that live near the surface and the mammals that breach the surface inside a bloom to breathe. In 1996, 149 manatees in Florida died from the effects of the red tide. This ...

  • Word Count: 894
  • Approx Pages: 4
  • Has Bibliography
  • Grade Level: High School

2. An Overview of Tide Pools

... have different diets. Whelk feed on bivalves, and barnacles, like the Acorn and Gooseneck barnacles. Chiton on the other hand, feed on brown and red algae, such as Nori Seaweed, Black Pine, and Coral Weed that are located in the same community. Starfish are classified to be an Echinoderm, and ... their diet consist of snails, limpets, and other types of species found in tide pools such as chitons, mussels, and barnacles. Because Whelk and Starfish share similar diets, they are considered to be in competition with one another.  ... of Starfish does have a large impact on the Mussel ...

  • Word Count: 1041
  • Approx Pages: 4
  • Grade Level: High School

3. Red badge of courage

Difficult struggle is often a humbling experience. In Stephen Crane's The Red Badge of Courage, Henry Fleming joins the Union army and tests his character during the Civil War. At first, the green Henry is confident that the war will bring no ... . His instinct is to lie helpless, but instead he fights anintense battle with his body? in order to escape the mob of soldiers.He went tall soldier fashion? against the tide of his pain,? notes Crane. Henry is not content to submit to his injury. He is able to rise above the surrounding chaos and eventually regain control of himself. Once ... ...

  • Word Count: 416
  • Approx Pages: 2
  • Grade Level: High School

4. Comparison and Contrast of Rom

... Cullen Bryant, Edgar Allen Poe, Washington Irving, Henry Wadsworth Longfellow, Ralph Waldo Emerson and Henry David Thoreau, influence on literature is apparent. "Thanatopsis-, "Masque of the Red Death-, "The Devil and Tom Walker-, "The Tide Rises, The Tide Falls-, "A Psalm of Life-, "Self-Reliance-, "Civil Disobedience- and Walden demonstrate this influence. Both Romanticism and Transcendentalism involve idealism; worth of the individual and democracy ... of life, society and ideals, were Romanticism and Transcendentalism. Although both intertwined, we can see distinct differences throu...

  • Word Count: 2626
  • Approx Pages: 11
  • Grade Level: High School

5. The Early Unification of Italy

... Monarchy of Piedmont. The impact of Italian Risorgimento could well be felt in 1848 - 1849 Revolution. It was a liberal national revolution under which tide all the rulers were obliged to promulgate a liberal constitution to their respective states. The liberal revolution in each Italian state was seen examined in ... movement under Piedmont against Austria following 'the Five Days of Milan' and the proclamation of a Venetian Republic under Xannim. Under the impact of this tide, Charles Albert of Piedmont, the Pope and even the Naples sent troops to expel the Austrians from the northern ...

  • Word Count: 10644
  • Approx Pages: 43
  • Grade Level: Undergraduate

6. Mangrove swamps

... shrubs and other plants growing in brackish to saline tidal waters. They are three types of mangroves trees; white mangroves, black mangroves and red mangroves. The white mangrove (laguncularia racemosa) grows inland. They can grow to heights of about 15-18 meters. White mangroves have leathery, ... water. It produces pale yellow flowers and a leathery cone fruit. The red mangrove is found close to the water's edge. Black mangroves (Avicennia sp.) typically grows at levels covered by high tide,, but exposed at low tide. They are identified by the root projections (pneumatophores) that st...

  • Word Count: 1654
  • Approx Pages: 7
  • Grade Level: High School

7. Coral Reefs

... result, phytoplankton utilizes these nutrients and grows exponentially. This causes various kinds of algae blooms: phytoplankton turning the water green, toxic blooms including red tides, and macro-algae overgrowing and smothering the reef. As phytoplankton increases, so does the turbidity of the water. This cuts down the ... times higher than that of normal seawater. These nutrient-rich ground waters can seep into the reef's water columns with each change of the tide. People harm reefs in lots of other ways: • Over fishing: fish and other reef species are caught by subsistence fisher...

  • Word Count: 2829
  • Approx Pages: 11
  • Grade Level: High School

8. Fishing Trip

... . The water was crystal clear and perfectly still. "There's one!" my brother yelled as he reeled in the first fish of the day. It was a decent sized red fish that weighed around four pounds. Pawpaw and I both reeled in a couple nice sized speckled trout both weighing in at around three pounds. After we pulled in a ... to Four Bayou Pass, which is where the marsh meets the Gulf of Mexico. Four Bayou Pass is known for its big fish. People sometimes report catching forty pound red fish out of the place. "There he is!" I exclaimed as the fish took my bait and headed straight out toward the ...

  • Word Count: 1029
  • Approx Pages: 4
  • Grade Level: High School

9. Birds of Galapagos

... The beak is strong and long, with a hooked end. The males are bigger than the females. The cormorant is often seen at the limit of the tide, the wings open to dry up with the wind. This ancestral reflexe does not serve for anything, since his wings don't permit him to fly anymore. ... large and yellow. The female is bigger than the male. The short-eared owl can be found on all islands except on Fernandina, Wolf and Darwin. .Red-billed Tropicbirds Graceful white bird with short wings, and two feathers stretched out at the back, kind of making like a tail. There is a black line ... maturi...

  • Word Count: 1866
  • Approx Pages: 7
  • Grade Level: High School

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