This article is from the source 'bbc' and was first published or seen on . It will not be checked again for changes.
You can find the current article at its original source at http://news.bbc.co.uk/go/rss/-/1/hi/sci/tech/7709103.stm
The article has changed 4 times. There is an RSS feed of changes available.
| Version 0 | Version 1 |
|---|---|
| Recipe for rescuing our reefs | Recipe for rescuing our reefs |
| (about 10 hours later) | |
| VIEWPOINT Rod Salm | VIEWPOINT Rod Salm |
| The colourful world supported by coral reefs is under threat as oceans absorb greater quantities of carbon dioxide, says Rod Salm. In this week's Green Room, he says we must accept that we are going to lose many of these valuable ecosystems, but adds that not all hope is lost. | The colourful world supported by coral reefs is under threat as oceans absorb greater quantities of carbon dioxide, says Rod Salm. In this week's Green Room, he says we must accept that we are going to lose many of these valuable ecosystems, but adds that not all hope is lost. |
| Imagine all the colour and vibrancy of coral reefs fading away into fuzzy, crumbling greys and browns, and you're left with a coral graveyard that could become the norm I've been privileged to see many of the world's finest and least disturbed reefs. | Imagine all the colour and vibrancy of coral reefs fading away into fuzzy, crumbling greys and browns, and you're left with a coral graveyard that could become the norm I've been privileged to see many of the world's finest and least disturbed reefs. |
| Mine were the first human eyes to see many of the remotest reefs at a time when we really could describe them as pristine. | Mine were the first human eyes to see many of the remotest reefs at a time when we really could describe them as pristine. |
| I would never have dreamed that they were at risk from people, far less than from something as remote then as climate change. | I would never have dreamed that they were at risk from people, far less than from something as remote then as climate change. |
| Today, despite the doom and gloom one reads so much about, one can still find reefs that are vibrant, thriving ecosystems. | Today, despite the doom and gloom one reads so much about, one can still find reefs that are vibrant, thriving ecosystems. |
| But sadly, too, there are more and more that look like something from the dark side of the Moon. | But sadly, too, there are more and more that look like something from the dark side of the Moon. |
| These degraded reefs have been ravaged by destructive fishing, bad land use practices that smother them with silt, and pollutants that foster disease and overgrowth by seaweeds. | These degraded reefs have been ravaged by destructive fishing, bad land use practices that smother them with silt, and pollutants that foster disease and overgrowth by seaweeds. |
| More alarmingly, there are large areas that are killed off and degraded by warming seas linked to climate change. | More alarmingly, there are large areas that are killed off and degraded by warming seas linked to climate change. |
| We've all read that global warming poses a tremendous threat to our planet, and that coral reefs will face an uphill battle to survive in warmer waters. | We've all read that global warming poses a tremendous threat to our planet, and that coral reefs will face an uphill battle to survive in warmer waters. |
| Yet the greatest threat to our oceans and to all of its wonders is little known, nearly impossible to see, and potentially devastating. This is not climate change, but does stem from the excess carbon dioxide emissions that contribute to climate change. | Yet the greatest threat to our oceans and to all of its wonders is little known, nearly impossible to see, and potentially devastating. This is not climate change, but does stem from the excess carbon dioxide emissions that contribute to climate change. |
| Changing chemistry | Changing chemistry |
| The ocean absorbs about one-third of the CO2 entering the atmosphere - a natural process that for millennia has maintained the carbon balance of our planet. | The ocean absorbs about one-third of the CO2 entering the atmosphere - a natural process that for millennia has maintained the carbon balance of our planet. |
| In recent times we have upset this balance; global CO2 emissions are at an all-time high, and our oceans are absorbing more CO2 and at faster rates than ever before, causing a shift toward greater acidity. | In recent times we have upset this balance; global CO2 emissions are at an all-time high, and our oceans are absorbing more CO2 and at faster rates than ever before, causing a shift toward greater acidity. |
| This removes carbonate from the water; and carbonate is an essential building block for calcifying organisms, like corals, molluscs, sea urchins and many other important creatures that live on reefs or help to build them. | This removes carbonate from the water; and carbonate is an essential building block for calcifying organisms, like corals, molluscs, sea urchins and many other important creatures that live on reefs or help to build them. |
| Too much carbonic acid lowers the natural pH balance of the oceans, causing acidification, which wreaks havoc on marine habitats and species. | Too much carbonic acid lowers the natural pH balance of the oceans, causing acidification, which wreaks havoc on marine habitats and species. |
| Just imagine all the colour and vibrancy of coral reefs fading away into fuzzy, crumbling greys and browns, and you're left with a coral graveyard that could become the norm if we don't address the threats to our oceans. The high visibility of coral bleaching makes this relatively easy to see and study, but ocean acidification is difficult to detect by sight alone | Just imagine all the colour and vibrancy of coral reefs fading away into fuzzy, crumbling greys and browns, and you're left with a coral graveyard that could become the norm if we don't address the threats to our oceans. The high visibility of coral bleaching makes this relatively easy to see and study, but ocean acidification is difficult to detect by sight alone |
| We need to find ways to convince people to take action, but that is a major challenge. | We need to find ways to convince people to take action, but that is a major challenge. |
| Given the difficulties that many coral reef managers around the world have in controlling such pressing direct threats as destructive fishing, overfishing and pollution, they are understandably hesitant about taking on an issue that they feel is beyond their ability and mandate to tackle. | Given the difficulties that many coral reef managers around the world have in controlling such pressing direct threats as destructive fishing, overfishing and pollution, they are understandably hesitant about taking on an issue that they feel is beyond their ability and mandate to tackle. |
| Climate change is often seen as too daunting and too global for them to address, and too abstract for them to communicate. | Climate change is often seen as too daunting and too global for them to address, and too abstract for them to communicate. |
| Fortunately, in some respects, the sudden and startling onset of mass coral bleaching linked to warming seas has changed that a little. | Fortunately, in some respects, the sudden and startling onset of mass coral bleaching linked to warming seas has changed that a little. |
| We have developed and are applying some straightforward, practical actions to design marine protected networks and zone the individual sites to protect areas that are naturally resistant to bleaching | We have developed and are applying some straightforward, practical actions to design marine protected networks and zone the individual sites to protect areas that are naturally resistant to bleaching |
| These areas are key, as they provide larvae that are transported to more vulnerable reefs where they settle and enhance recovery. | These areas are key, as they provide larvae that are transported to more vulnerable reefs where they settle and enhance recovery. |
| The high visibility of coral bleaching makes this relatively easy to see and study, but ocean acidification is difficult to detect by sight alone. | The high visibility of coral bleaching makes this relatively easy to see and study, but ocean acidification is difficult to detect by sight alone. |
| It is creeping, progressive, and insidious - likened by some scientists to osteoporosis of the reef - a weakening of the reef structure that makes corals more vulnerable to breakage from waves and human use. | It is creeping, progressive, and insidious - likened by some scientists to osteoporosis of the reef - a weakening of the reef structure that makes corals more vulnerable to breakage from waves and human use. |
| We simply do not know yet whether we have reached or surpassed the point of no return for some coral species. | We simply do not know yet whether we have reached or surpassed the point of no return for some coral species. |
| If current emission trends continue, we could see a doubling of atmospheric CO2 in as little as 50 years. | If current emission trends continue, we could see a doubling of atmospheric CO2 in as little as 50 years. |
| This would lead to an unprecedented acidification of our oceans that coral reefs would be unlikely to survive, a scenario that should spur us into action to try and find solutions. | This would lead to an unprecedented acidification of our oceans that coral reefs would be unlikely to survive, a scenario that should spur us into action to try and find solutions. |
| A significant lowering of ocean pH would mean potentially massive coral loss. That would lead to the death of countless marine species as well as the devastation of economies dependent on ocean health and productivity. | A significant lowering of ocean pH would mean potentially massive coral loss. That would lead to the death of countless marine species as well as the devastation of economies dependent on ocean health and productivity. |
| 'Meeting of minds' | 'Meeting of minds' |
| It would also mean the end of an era for coral reef and scuba diving aficionados around the world. | It would also mean the end of an era for coral reef and scuba diving aficionados around the world. |
| But, more importantly, it would remove the livelihoods of hundreds of millions of people around the globe who depend on reefs for food, income, coastal protection and stability. | But, more importantly, it would remove the livelihoods of hundreds of millions of people around the globe who depend on reefs for food, income, coastal protection and stability. |
| Current estimates predict that we could lose all coral reefs by the end of the century - or, in the worst case scenario, possibly decades sooner, if we don't take action now to prevent ocean acidification. 'Alarming' plight of coral reefsNatural lab shows sea's acid path | Current estimates predict that we could lose all coral reefs by the end of the century - or, in the worst case scenario, possibly decades sooner, if we don't take action now to prevent ocean acidification. 'Alarming' plight of coral reefsNatural lab shows sea's acid path |
| We have to maintain hope and optimism and keep trying to find solutions. | We have to maintain hope and optimism and keep trying to find solutions. |
| The Nature Conservancy recently convened leading climate change experts, top marine scientists, and prominent coral reef managers from around the globe for a "meeting of the minds" session to chart a course of action for addressing ocean acidification. | The Nature Conservancy recently convened leading climate change experts, top marine scientists, and prominent coral reef managers from around the globe for a "meeting of the minds" session to chart a course of action for addressing ocean acidification. |
| The key findings and recommendations from this gathering were compiled into the Honolulu Declaration on Ocean Acidification and Reef Management. | The key findings and recommendations from this gathering were compiled into the Honolulu Declaration on Ocean Acidification and Reef Management. |
| The most logical, long-term solution to ocean acidification impacts is to stabilise atmospheric CO2 by reducing emissions around the globe. | The most logical, long-term solution to ocean acidification impacts is to stabilise atmospheric CO2 by reducing emissions around the globe. |
| Yet the Honolulu Declaration also outlines tangible steps that can be taken now to increase the survival of coral reefs in an acidifying ocean, while also working to limit CO2 emissions. | Yet the Honolulu Declaration also outlines tangible steps that can be taken now to increase the survival of coral reefs in an acidifying ocean, while also working to limit CO2 emissions. |
| For example, we need to identify and protect reefs that are less vulnerable to ocean acidification, either because of good flushing by oceanic water or biogeochemical processes that alter the water chemistry, making it more alkaline and better able to buffer acidification. | For example, we need to identify and protect reefs that are less vulnerable to ocean acidification, either because of good flushing by oceanic water or biogeochemical processes that alter the water chemistry, making it more alkaline and better able to buffer acidification. |
| We can achieve this protection by designating additional "marine protected areas" and revising marine zoning plans. | We can achieve this protection by designating additional "marine protected areas" and revising marine zoning plans. |
| We also need to integrate the management of these areas with reform of land uses that generate organic wastes and effluents that contribute to acidification. | We also need to integrate the management of these areas with reform of land uses that generate organic wastes and effluents that contribute to acidification. |
| At the local level, we may need to restrict access to more fragile coral communities or limit it to designated trails, much as we do with trails through sensitive environments on land. | At the local level, we may need to restrict access to more fragile coral communities or limit it to designated trails, much as we do with trails through sensitive environments on land. |
| We should consider designating "sacrificial" reefs or parts of reefs for diver training and heavy visitor use. | We should consider designating "sacrificial" reefs or parts of reefs for diver training and heavy visitor use. |
| Another intriguing option is the prospect of farming local corals that prove more resistant to acidification, and "planting" them in place of those that weaken and break apart. | Another intriguing option is the prospect of farming local corals that prove more resistant to acidification, and "planting" them in place of those that weaken and break apart. |
| The consequences of inaction are too depressing to contemplate. | The consequences of inaction are too depressing to contemplate. |
| Global leaders, reef managers, and citizens around the globe should give all the support they can to the Honolulu Declaration to ensure the survival of the beauty and benefits of our marine treasure trove for future generations. | Global leaders, reef managers, and citizens around the globe should give all the support they can to the Honolulu Declaration to ensure the survival of the beauty and benefits of our marine treasure trove for future generations. |
| Dr Rod Salm is director of The Nature Conservancy's Tropical Marine Conservation Program in the Asia-Pacific region | Dr Rod Salm is director of The Nature Conservancy's Tropical Marine Conservation Program in the Asia-Pacific region |
| The Green Room is a series of opinion articles on environmental topics running weekly on the BBC News website | The Green Room is a series of opinion articles on environmental topics running weekly on the BBC News website |
| Do you agree with Rod Salm? Is too little being done to halt human activities harming fragile marine ecosystems? Are efforts to save coral reefs being overshadowed by problems on land? Or are you optimistic that scientists, conservationists and politicians will find a way to save the colourful underwater worlds? | Do you agree with Rod Salm? Is too little being done to halt human activities harming fragile marine ecosystems? Are efforts to save coral reefs being overshadowed by problems on land? Or are you optimistic that scientists, conservationists and politicians will find a way to save the colourful underwater worlds? |
| This gentleman talks of "hope", but when you end the article you discover that the only thing he can muster to support the hope is a "Mind meeting", that is to say, another gathering of talking people. I lost my hope on those meetings many many years ago... Fernando Villegas, Santiago de Chile | |
| Ocean acidification is the forgotten problem. It is so overlooked that the climate change denialists don't have any of their usual pre-prepared responses (it's entirely natural event etc.. ). It is also worrying that some of the proposed geo-engineering solutions to climate change (for example the rather fanciful mirrors in space solution) will do nothing to curb the increasing concentration of CO2 in the atmosphere that is responsible for the acidification of oceans. We have to raise the profile of this issue. Firstly, so that the public is aware that our CO2 emissions are causing more than one problem. Secondly, to emphasize that we can only get ourselves out of this mess by curbing our emissions.Paul A, London, UK | |
| Certainly not enough care has been taken of the marine environment for decades. Although the marine environment is arguably the most important in terms of global weather and also atmospheric composition it has largely treated as an open sewer. The sad fact is for most people it is 'out of sight, out of mind'. For example Broward, and Miami Dade councils of South Florida... have denied the mounting scientific evidence that effluent being pumped over coral reefs causes damage and favour the "It does no harm" opinion. Such dangerous opinions in the legislature of so called 'developed nations' will ultimately end in the ruin of some of the more accessiable reefs in Southern Florida. And sadly by the time that people believe it to be true - it's often far too late. As a marine biologist I am constantly saddened by the attitudes of people that could make a difference in terms of environmental protection legislation and frustrated that there is little funding or help for early career marine biologists who desparately want to "make a difference" and show the importance of protecting fragile habitats such as coarl reefs and mangroves in a global context. Once it's gone it's gone. That's the sad thing about it - but it doesn't have to be this way.Claire Phillips, Oxford | |
| I feel very strong empathy for Dr Salm. I walked away from this 14 years ago. He is still watching it face to face. There is only one answer; we had to stop - and we had to stop about 40 years ago, when Kennedy was committing us to flying to the moon, he should have been committing us to living on the planet we had. We have to stop, and make a balance with the levels of human activity that the planet will tolerate. Until that message sinks in to the minds of 6 billion people; there is nothing that can be done for now. At present course; that understanding will not register till the World's ecosystem has collapsed; taking our human society and economics crashing down with it. The governments of the world cannot pump enough money to keep this "more more more" expectation ramping up an ever steepening curve for much longer. At least 4 billion people, of the 6 billion people presently on the planet, go into free fall, and that will be that. In a couple of million years, the oceans will cool, the ph values will settle, the coral will flourish again . . and it will be as if we were never here, even in the blink of an evolutionary eye. The only question left is . . if any of us survive the die back - will the humans that remain evolve to be smart enough to learn our lessson, make peace with our home, and not mess it up all over again ? How long will it take you to explain it to 6 billion people Dr Salm ? Will the reefs last that long ? No ? - then I'm afraid the learning process will be one of cold hard practical experience. I am deeply sorry.steven walker, Penzance | |
| Fishing practices are devastating "links in the chain" that enable the life cycle of the marine ecosystem to support itself. If all "net fishing" were banned there would be little damage to and destruction of the species not being fished and their habitats. Commercial net fishing is very destructive. Just watch "blue planet" until the message gets through. Shaun M White, Edmonton, Canada | |
| Although I am not in any way an expert that could agree or disagree with Mr. Salm, I strongly believe we are doing far too little to stop damaging our environment and start to repair what has been damaged. I am optimistic that ways can be found to begin those repairs, and I find the idea of "farming" coral reefs very interesting, but I fear we have become too self-absorbed to recognize our responsibility to the planet we live on. I sincerely hope I am wrong - and I applaud Rod Salm and his colleagues for all of their efforts.Yolanda, Greenfield USA | |
| Much is said about save the planet and its many ecospheres ,but is anybody really going to make the sacrifices needed to make a difference? 90+ percent of the population want to be what they see on the TV,shameless ,ignorant consumers that adhere to the motto "more is better"..Even the education we recieve in schools directs us to become a well oiled part in the mechanism of consumer domination. Wise and educated men such as leaders of state know of all these problems,yet chose not to adress them because they fear the solutions would alienate them from the voter.Green seems to be good only as far as ti suits the consumer and his supplier.Shame on us all.Rod Salm has it right in his article.How right do you have it in your life?? Lets see if we can spend and save the coral reefs.Real education is what is needed to see consumerism exposed as the terrifying monster that it is. Consume less= sustained life forms.We all make a difference,even you. Best wishes.Martin Jackson, Tavira ,Portugal. | |
| good article but ideas for solutions exist mainly in the realm of pie-in-the-sky, particularly for the developing countries within whose waters the majority of the coral reefs lie. as such, without specific programming and funding (akin to those that might equally be dreamt up for tropical forests) from donor or developed countries, little will be achieved. the consequences of inaction are indeed too depressing to contemplate, but a small, sand wall will not hold back the tsunami.sdw, maputo. mozambique | |
| Lets not forget that ours is the Water Planet, if the Oceans are in peril the entire planet faces extinction, everything humanly possible should be done at all levels to stop polluting our Oceans and bring back eco systems where ever possible, set up ocean preserves and stop over fishing.gert glende, Vancouver, BC , Canada | |
| There are those that may argue that the effects are not as bad as predicted, but the reefs here in Pohnpei definitely seem to follow the trend. I have yet to find a part of the reef here that does not show the effects of an acidifying ocean. I'm sure that foreign fishing boats, harbored inside the reef boundaries, who recklessly dispose of their used oil directly into the water don't help the situation any!Lemuel Recinos, Kolonia, Pohnpei, Federated States of Micronesia | |
| This is an excellent summary of a major issue that even most marine scientists have been unaware of up until recently. ...and if you're one of those who doubt the predictions of future climate models, then you can suspend doubt now: the acidification of the oceans isn't a matter of debate, or models, or future projections, it's already happening and it will continue to happen so long as atmospheric CO2 keeps going up. That much is well understood chemistry. Yes, it's true that atmospheric CO2 level have been much higher in the past, and yes the oceans can buffer these changes, but we'll have to wait about 1000 years for that to happen. The problem is that the CO2 levels are rising SO RAPIDLY. If ever there was a good reason for reducing CO2 emissions as fast as possible, this is it.Prof. Jon Havenhand, Strömstad, Sweden | |
| Simple speechless. What utter rubbish. They've given up on 'Global warming' and called it 'Climate Change' as the world has stopped warming. Now we need a new 'you're all doomed Captain' scenario to keep the waning interest up. Coral reefs are suffering because of over fishing for aquarium fish, physical damage and agricultural run off, you are merely clouding the issue with CO2. You can find coral fossils dating back hundreds of millions of year, from times when CO2 levels were much might (x17 or more) than they are now. Funny how they seem to have thrived. Give us a break. Mark , Coventry / UK | |
| We should use bicycle power more, and the bus! Marion Johansson, Denmark | |
| Send us your comments using the form below: | Send us your comments using the form below: |
| Name |