The CSIRO has noticed other changes, including the invasion of about 30 species of fish from warmer areas to Tasmanian waters.
The most significant threat to the future of the Great Barrier Reef and of the planet's other tropical reef ecosystems is global warming. Many of the corals of the Great Barrier Reef are currently living at the upper edge of their temperature tolerance, as demonstrated in the coral bleaching events of the summers of 1998 and 2002. Under the stress of waters that remain too warm for too long, corals expel their photosynthesizing zooxanthellae and turn colourless, revealing their white skeletons, and if the water does not cool within about a month the coral dies. In ecology, an ecosystem is a naturally occurring assemblage of organisms (plant, animal and other living organismsâ€”also referred to as a biotic community or biocoenosis) living together with their environment (or biotope), functioning as a unit of sorts. ... Global mean surface temperatures 1856-2004 Global warming is a term used to describe an increase over time of the average temperature of Earths atmosphere and oceans. ... Coral bleaching results when the symbiotic zooxanthellae (single celled algae) are expelled from the host coral organism due to stress. ... 1998 is a common year starting on Thursday of the Gregorian calendar, and was designated the International Year of the Ocean. ... 2002 is a common year starting on Tuesday of the Gregorian calendar. ... Zooxanthellae are golden-brown endosymbionts of various marine animals and protozoa. ...
Global warming has triggered the collapse of reef ecosystems throughout the tropics. Increased global temperatures bring more violent tropical storms, but reef systems are naturally resilient and recover from storm battering. With an upward trend in temperature apparently continuing, much more coral bleaching is expected to occur in the coming decades.
Rising levels of greenhouse gases may not be quite as bad for coral reefs as was previously thought. A team of Australian scientists say that the damage done by increasing amounts of carbon dioxide in the oceans will be offset by warmer waters, which will make coral grow faster. But other researchers counter that warming will do more harm than good.
Other researchers argue that McNeil’s team did not consider coral bleaching, which occurs when warmer waters cause corals to expel the symbiotic algae that live in them. They say bleaching may undo the beneficial effects of higher temperature.
A coral reef in this area would imply ocean warming and not global warming. The article also leaves out an important detail on how long it would take for a reef of that size to form. The idea behind an article like that is for you to automatically assume that this is because of man. Keep in mind that our climate has been warming for thousands of years. Yes... thousands. The climate cycles.
covered reef off Tasmania. The reef which is the size of a large city suburb
How long does it take for coral to grow? Corals grow at different rates, depending on water temperature, salinity, turbulence, and the availability of food. The massive corals are the slowest growing species, adding between 5 and 25 millimeters (.2 inches to an 1 inch) per year to their length. Branching and Staghorn corals can grow much faster, adding as much as 20 centimeters (8 inches) to their branches each year.
is actually a very tiny city suburb and is only ONE SQUARE MILE, which equals 63,600 inches across and 63,600 in length, THAT CORAL IS SUPER CORAL.
a large city suburb
I am a writer, not a scientist. The poster has every reason to question the story but to attack the poster?
Is that REALLY your argument?
I am reporting the story without bias from information given to me by a reputable news source
I put it down largely to the rape of the sea by humans and pro fishers but when added with the declining reef and weird water currents it does point to something larger and something global occuring.
I find personally that global warming explains the increase of water temperature wquite well.
I am passing on to members here to debate.