What is interesting is that the value of the Great Barrier Reef is equated to the economics of the Tourist Industry. Yet it is the very economics which has driven the economics of demand and supply and product and service proliferation. Yet to make these products we need to convert resources into productive capital. The crown of thorns dilemma is another aspect of agricultural economics whereby we seek economies of scale to mass produce broadscale farming in order to maximise output. Yet that very accelerated farming through the use of fertilisers becomes another link decoupling nature from human survival. We don’t seem to understand that our modus operandi of profit maximisation is the missing link with living in harmony with nature. Ultimately situations like the death of the Great Barrier Reef in my mind represent serious tipping points that ultimately affect the rest of the ecosystem, as it doesn’t operate like independnet business units ornation states, it is one continuous energy flow of sensitive and finely balanced systems of species and organisms that coexist with the whole, not independently. nature is holistic, human behaviour is self interested. The two do not work together, so tourism won’t save nature. We have to learn to live in balance. We have to address our addictions to the lifestyle we have created, we have to remember nature and how it works and how we can live with it and in it. There is a lot of work to do for us to return to sustainability. It is not just a vege patch and water tank, it is to understand our place in nature. Religions were incorrect suggesting nature was there for our dominion, yet nature truly served us, we have always depended on nature for our own survival but there are natural limits. Thus the death of this reef is merely another WAKE UP call to us. Are you deeply listening or watching tv to distract yourself. The former will change the world. The latter was never the real world.

There is wise advice below that relates to all the earth issues we face ‘to do nothing is not an option’.  So what will you do to ensure nature is left in a pristine state for all future generations?

Below is a project which is seeking to redress some of the imbalance.  Then watch the video below to gain insights into this ecological disaster that impacts the globe not just here in Australia.

http://www.csmonitor.com/Environment/Latest-News-Wires/2012/1002/Half-of-Great-Barrier-Reef-lost-to-starfish-and-cyclones-in-less-than-30-years-video

Half of Great Barrier Reef lost to starfish and cyclones in less than 30 years

That overall 50-percent decline, they estimate, is a yearly loss of about 3.4 percent of the reef.

By Katharine Gammon, LiveScience Contributor / October 2, 2012

Katharina Fabricius, a coral reef ecologist at the Australian Institute of Marine Science and study co-author, told LiveScience that she has been diving and working on the reef since 1988 — and has watched the decline. “I hear of the changes anecdotally, but this is the first long-term look at the overall status of the reef. There are still a lot of fish, and you can see giant clams, but not the same color and diversity as in the past.”

To get their data, Fabricius and her colleagues surveyed 214 different reefs around the Great Barrier Reef, compiling information from 2,258 surveys to determine the rate of decline between 1985 and 2012. They estimated the coral cover, or the amount of the seafloor covered with living coral.

That overall 50-percent decline, they estimate, is a yearly loss of about 3.4 percent of the reef. [Photos of Great Barrier Reef Through Time]

They did find some local differences, with the relatively pristine northern region showing no decline over the past two decades.

Cyclones and starfish

The reef’s decline, detailed this week in the Proceedings of the National Academy of Sciences, can be chalked up to several factors, they found. The biggest factors are smashing from tropical cyclones, crown-of-thorns starfish that eat coral and are boosted by nutrient runoff from agriculture, and coral bleaching from high-temperatures, which are rising due to climate change.  (Coral bleaching happens when ocean temperatures rise and cause the corals to expel their zooxanthellae — the tiny photosynthetic algae that live in the coral’s tissues.)

Other coral experts say the precipitous decline matches what they have found. “This is a really grim wake-up call,” said John Bruno, a biologist at UNC Chapel Hill. “The GBR [Great Barrier Reef], which only 10 years ago was considered the world’s most pristine and resilient coral reef is clearly not better off and no less threatened than any other reef. I am bullish on the long-term survival of reefs, but science like this is challenging that outlook.”

Saving the reef

As for what can be done to save the reef, or what’s left of it, some say reducing carbon dioxide (CO2) emissions is key. “International efforts to cap and reduce CO2 emissions are equally critical and must occur at the same time as cleaning up local impacts,” said Les Kaufman, a biologist at Boston University who is part of an international consensus statement on climate change and coral reefs.

Fabricius says not much can be done in the short term about the climate-change-driven frequency of cyclones — five category 5 storms in the past seven years have pounded the reefs — or high temperatures. However, there are efforts in place to stem the damage from starfish, which can grow up to 3 feet (0.9 meters) in diameter and sport long venomous spines and 21 arms. Young starfish feed on coral-making algae, and leave behind the coral’s skeleton.

One project encourages farmers to adopt practices that limit the amount of nutrient-rich runoff draining into reef areas. Another would allow tour operators to manually remove starfish from tourist areas, which Fabricius admits isn’t a solution, just a temporary fix.

Another option is to examine ways of harnessing natural starfish diseases that typically keep starfish numbers low. “Starfish normally are rare,” Fabricius said. “We want to help Mother Nature keep them rare.” The research shows that the reef could rebuild itself in 20-30 years despite the cyclones and bleaching, if the starfish population died back.

The experts agree that doing nothing is not an option at this point. “The problem is entirely soluble, and coral reefs can be saved through concerted effort over this and the following two or three generations,” said Kaufman. “There is absolutely no excuse for failure to do this, and if we do fail our generation will forever be remembered for unimaginable, unforgivable stupidity and sloth.”

• Strange Coral: A Gallery of Sea Pens
• Marine Marvels: Spectacular Photos of Sea Creatures
• 8 Ways Global Warming Is Already Changing the World

A video of the Great Barrier Reef – Crown of Thorns