Skip to comments.Coral "shuffle" helps reefs survive warmer world: study
Posted on 07/14/2007 4:16:06 PM PDT by Daralundy
Coral "shuffle" helps reefs survive warmer world: study
SYDNEY (Reuters) - Australia's Great Barrier Reef might be able to survive warming sea temperatures, as a result of global warming, better than first thought because some coral algae are more heat tolerant, Australian scientists said.
Coral geneticists from the Australian Institute of Marine Science have found that many corals store several types of algae, which can improve their capacity to cope with warmer water.
"This work shatters the popular view that only a small percentage of corals have the potential to respond to warmer conditions by shuffling live-in algal partners," said institute marine scientist Madeleine van Oppen.
"Simply, when conditions warm the more heat-tolerant algae provide back-up, become more abundant. Some algal types impart greater resistance to environmental extremes," van Oppen said in a statement received on Friday.
Since the 1980s, reefs around the world have been devastated by coral bleaching, where temperature increases of just 1 degree Celsius can cause coral animals to expel the photosynthetic algae that keep them supplied with nutrients.
Numerous scientific studies have warned that global warming of the ocean was threatening the very existence of reefs, such as the Great Barrier Reef.
The Australian scientists said their study had found that coral has the ability to "shuffle" the algae, maximizing nutrients depending on water temperature. They discovered heat-resistant algae by examining the DNA of different types of coral.
But many marine scientists have argued that "back-up" algae were infrequent because of the small number of corals that were shown to host several types of algae.
"The potential for this hidden back-up type (algae) to step in and provide nutrition to coral during heat stress is far greater than currently thought," said Jos Mieog, a PhD student involved in the coral study.
The Australian scientists said this "shuffle" ability might explain why coral reefs have been able to survive for thousands of years during various climate changes.
"This flexibility discovered in our research is important in understanding the past evolutionary success of these coral species and their future survival capacity in the face of a changing climate," said van Oppen.
But yep, Once again they are lying linking it to global warming. It's an environmental problem alright but it has nothing to do with global warming. The real culprit is increasing outbreaks of these guys
The Crown of Thorns Starfish which eats coral leaving behind large dead bleached areas.
These outbreaks occur because of fertilizer & sewage run-off which causes algae blooms in which the juvenile CoT starfish feed on as well as its predators are being over-fished and over-harvested, both of which lead to population explosions of the CoT Starfish which decimate the corals
The Algorians can't understand such logical explanations. They probably think Algore invented coral back in the 90s.
Woo ... hoo.
alGore will be deeply saddened
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.