Crown of Thorns Starfish

The Great Barrier hit down (GBR) is the largest collection of unusual coral reefs in the world. It extends everywhere 2000km off the northeastern marge of Australia and is home to a very diverse range of adjunct creatures. Coral Reefs create in beas where temperatures dont fall below 18 degrees Celsius for long completions at a time, so are unremarkably found 30 degrees north and south of the equator. Most aim very salty water system. Reefs are very sh supportert out with clear water to allow light to penetrate. collectable to the GBR?s symbiotic nature it is state by umteen to be a large maintenance organism. Experts suggest that around parts of the reef could be up to 20 unrivaled whizz million million million years old, with most of the visible coral scarce developing over the past 2 million years. Generating over 1 billion dollars every year for the tourism industry the GBR is a major contri nonwithstandingor to the Australian economy. however ther e is a creature that scourgeens this natural resource. The crown-of-thorns starfish ( cotS) is one of the only animals that feeds on living coral tissue, it is named for the dense covering of long, highly sharp spines on its surface that are cognize to pick out a toxic reaction in humans. other(a) characteristics include, a blab surrounded by short numb spines, a give birth and hundreds of tiny feet that can be seen from downstairs each arm. The pony diet consists of soft corals and gorgonians (sea whips) to echinoids (sea urchins), clams and algae. They have alike been observed to eat each other. A private COTS can finish up to 6 square meters of living reef per year. During expression conditions, these starfish pose little threat to the reef on a large scale, unless when an clap occurs the result is catastrophic. If it is not re-infested, a reef may discover a COT outbreak in 10 to 20 years notwithstanding many reefs become re-infested before it has recovered. This has caused some scientists to speculate! that continue re-infestation might result in reefs bonny devastated for long period of time. The COTS has very high reproductive readiness with each effeminate being able to lay millions of bollock in one breeding season. One of the main hypotheses as to the survival of larvae is the overspill of nutrients from fertilizers near costal areas, causing the water to become loaded with nutrients. This results in a phytoplankton bloom that provides more(prenominal) food for crown-of-thorns larvae. in that location are very few animals that are willing to attack the toxin-ridden starfish, but surprisingly, some creatures prey on them. Predators include the Giant Triton, a species of shrimp, a species of worm and mixed fish. The decline of these predators, due to over harvesting and pollution is also a major part to the increase the population of the starfish, fashioning outbreaks more likely to occur. There are many slipway to prevent COT from plaguing our reefs such(prenomina l) as the breeding of such creatures as the Giant Triton.

diverse also kill them by injecting the starfishs own stomach deadly into each of their many offsets although this is a long and tedious swither because if even one leg is missed the sea star can live on. also the drastic change in farming and pollution i.e. slight fertilizers can decrease the add up of phytoplankton. The crown-of-thorns starfish are a threat to the environment on the Great Barrier Reef, but the problem can be solved with time, lots of course and monitoring by biologists and researchers in the region. BibliographyBooks?Shaw, Jeff, 2007, ?Reef Invader: The efflorescence of Thorns starfish??Johnson, Craig, su mmit-of-Thorns Starfish on the Great Barrier Reef?Vai! sutis, Justine, 2005, Queensland and the Great Barrier Reef, lonely Planet?McGovern, Ann, 1989, bulge out Under, Down UnderInternet?Aims Research, ?Reef supervise?, April 30, 2003, (online) http://www3.aims.gov.au/pages/research/reef-monitoring/ltm/ltm20030307-gbr.html??The Crown of Thorns?, (online) http://www.tellusconsultants.com/Thread/ACANTH.HTM??Crown of Thorns Starfish?, 2006, (online) http://www.answers.com/national/crown-of-thorns-starfish??The Great Barrier Reef Australia? (online) http://www.barrierreefaustralia.com/ If you want to spend a penny a full essay, order it on our website: OrderEssay.net

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