Category Archives: Coral reefs

MARINE : Google Earth presents fish-eye view of coral reefs

From ENN It is estimated that coral reefs cover around 284,000 square kilometers providing a habitat for thousands of species to live. And unless you’ve snorkeled in some of these underwater habitats, or perhaps have seen a Planet Earth documentary, most of us have never experienced these natural wonders.

But thanks to Google Earth, you can now visit up-close and personal some of the world’s most imperiled ecosystems. The Google team is currently working with scientists to provide 360 degree panoramas, similar to Google street-view, to give armchair ecologists a chance to experience the most biodiverse ecosystems under the waves.

“Only 1% of humanity has ever dived on a coral reef and by making the experience easily accessible the survey will help alert millions of people around the world to the plight of coral reefs,” says Ove Hoegh-Guldberg with the University of Queensland. Hoegh-Guldberg heads the Catlin Seaview Survey which brings cameras mounted to a manned vehicle to photograph the reefs. Last year the team did around 30 surveys in the Great Barrier Reef region, while this year they have expanded to the Caribbean.

The technology has other potential beyond education and appreciation. Researchers hope to employ citizen scientists to identify marine species via images, helping to catalogue biodiversity on embattled reefs. Much like the way the public can upload pictures onto Google Earth and Google Maps, there will be a feature to create public interaction in helping with the project.

Coral reefs are threatened by pollution, coastal development, on-land deforestation, and overfishing. However the largest threat to coral reefs is burning fossil fuels, which is pushing marine temperatures up and causing to ocean acidification.

“Our results show that even under the most moderate climate change projections from the Intergovernmental Panel on Climate Change, most corals will struggle to survive and reefs will rapidly decalcify,” says Hoegh-Guldberg, who is running a longterm project in Australia that measures how corals respond to rising temperatures and acidification in controlled conditions.

In addition, global warming poses a major threat to these massive living structures and the improved Google Earth application will allow us to explore the state of coral reefs around the world, seeing their distribution and concerns facing their future existence.

@NAEE_UK believes children should learn about coral reefs / marine environments

MARINE: Bad news for Caribbean coral

Comprehensive survey of the Caribbean’s reefs is expected to act as a warning of problems besetting the world’s coral. The Guardian reports

A major survey of the coral reefs of the Caribbean is expected to reveal the extent to which one of the world’s biggest and most important reserves of coral has been degraded by climate change, pollution, overfishing and degradation.

The Catlin scientific survey will undertake the most comprehensive survey yet of the state of the region’s reefs, starting in Belize and moving on to Mexico, Anguilla, Barbuda, St Lucia, Turks & Caicos, Florida and Bermuda.

The Catlin scientists said the state of the regions’ reefs would act as an early warning of problems besetting all of the world’s coral. As much as 80% of Caribbean coral is reckoned to have been lost in recent years, but the survey should give a more accurate picture of where the losses have had most effect and on the causes.

Loss of reefs is also a serious economic problem in the Caribbean, where large populations depend on fishing and tourism. Coral reefs provide a vital home for marine creatures, acting as a nursery for fish and a food resource for higher food chain predators such as sharks and whales.

Stephen Catlin, chief executive of the Catlin Group, said: “It is not only important that scientists have access to this valuable data, but companies such as ours must understand the impact that significant changes to our environment will have on local economies.”

Globally, coral reefs are under threat. The future of the Great Barrier Reef in Australia is in doubt as mining and energy companies want to forge a shipping lane through it to form a more direct link with their export markets.

Warming seas owing to climate change can lead to coral being “bleached” – a state where the tiny polyps that build the reefs die off. The US government’s National Oceanic and Atmospheric Administration predicts increasing frequency and severity of mass bleaching events as global warming takes effect.

Richard Vevers, director of the project, told the Guardian that one important role of the new survey would be to describe a new “baseline” to establish how far such problems have taken their toll to date, which will enable future scientists to judge how degradation – or conservation – progresses.

He said the team of scientists would also probe the underlying reasons for such degradation, with a view to informing conservation efforts.

The team will use satellite data as well as direct observations to assess the reefs. As part of the survey, they will develop software that marine scientists can apply to other reefs around the world. A new camera has been constructed to assist their efforts.

Vevers said: “The Caribbean was chosen to launch the global mission because it is at the frontline of risk. Over the last 50 years 80% of the corals have been lost due mainly coastal development and pollution. They now are also threatened by invasive species, global warming and the early effects of ocean acidification — it’s the perfect storm.”‘

NAEE_UK believes we need to discuss climate change

Three-quarters of the world’s reefs at risk

Representatives from ZSL’s Conservation and Living Collections teams on Thursday participated in the launch of the Reefs at Risk Revisited report launch.

Coral at ZSL London Zoo© ZSL – James Godwin
Dr Heather Koldewey, ZSL’s International Marine and Freshwater Conservation Programme Manager, said ‘This report provides an invaluable compilation of the latest and most comprehensive data set on the world’s coral reefs.
These data support ZSL’s position that we are in imminent danger of losing most of our coral reefs over the next 30-50 years unless there is a rapid and global action. ZSL is committed to such action through diverse programmes that span from grass roots initiatives like EDGE Coral Reefs, to our international policy work supporting GLOBE’.

In the 10 years since the first Reefs at Risk analysis, threats have increased by 30 percent. This includes recent impacts from climate change which causes rising ocean temperatures and coral bleaching.

The most immediate and direct threats arise from local sources, which currently threaten more than 60 percent of reefs (about 150,000 sq km of reefs). Local threats include overfishing, destructive fishing, coastal development and pollution.

Unless steps are taken to reduce local pressure and reduce the emission of greenhouse gases, the percent of threatened reefs will increase to more than 90% by 2030 and to nearly all reefs by 2050.

Most vulnerable

The report identifies 27 nations most vulnerable to coral reef degradation and loss in the world (of 108 reef countries assessed). The nine coun¬tries most vulnerable to the effects of coral reef degradation, due to high dependence on coral reefs and low adaptive capacity, are: Haiti, Grenada, Philippines, Comoros, Vanuatu, Tanzania, Kiribati, Fiji, and Indonesia.

The report makes 60 recommendations for action. ZSL’s coral reef conservation efforts respond to many of these, including supporting and implementing effective marine protected areas (in Chagos and the Philippines through Project Seahorse), building conservation and management capacity in coral reef nations (EDGE Corals, Project Seahorse), supporting the most vulnerable countries (e.g. Philippines through Project Seahorse) and influencing policy (Climate Change programme; GLOBE Action Plan for Coral Reefs).

The report was led by the World Resources Institute, along with the Nature Conservancy, the WorldFish Center, ICRAN, UNEP-WCMC, and GCRMN. One of the report’s authors, Dr Allison Perry, is a former member of the Project Seahorse team.

http://www.zsl.org/conservation/news/three-quarters-of-worlds-reefs-at-risk,796,NS.html

The full report can be downloaded at http://pdf.wri.org/reefs_at_risk_revisited.pdf

Are Africa’s seas getting protection they deserve, finally?

South Africa maps first deep-sea preserve

The Independent/AFP

Underwater canyons, deep-sea coral reefs and sponge banks are part of a unique ecosystem that South Africa wants to save within its first deep-sea marine protected area. After 10 years of consultations, South Africa has mapped the boundaries for the proposed reserve stretching 100 kilometres (60 miles) from the eastern KwaZulu-Natal coast.The mapping required synthesising the many divergent interests in the Indian Ocean waters, with 40 industries from fishing to gas lines to jet skis operating in an area home to about 200 animal species and their ecosystems.”All of this data was then entered into conservation planning software in order to identify areas of high biodiversity while avoiding areas of high (economic) pressure,” said Tamsyn Livingstone, the researcher who heads the project.The conservation area is being born in a spirit of compromise, which will allow people and companies to continue using the protected waters in zones designated as lower-risk threats to biodiversity.The scheme still needs to be passed into law, but would join South Africa’s existing network of marine preserves strung along its 3,000-kilometre (1,800-mile) coast stretching from the warm Indian Ocean to the cold southern Atlantic.South Africa has embraced this “participatory” method to protecting species living in its water, an approach pioneered in California and Australia.Global goals for protecting biodiversity have been debated for two weeks at a UN summit in Nagoya, Japan (http://www.cbd.int/cop10/), in an effort to set goals on saving habitats which would help to end the mass extinction of species.Environmental groups want 20 percent of coastal and marine areas protected, they say China and India are lobbying for six percent or lower. Talks are supposed to wrap up on Friday.Part of the challenge is in protecting species that are more often than not still unknown. Only one quarter of the estimated million species in the oceans have been discovered.A global census of the oceans unveiled in early October uncovered prehistoric fish thought dead millions of years ago, capturing researchers’ imaginations about what else lurks in the deepest parts of the sea.”Offshore biodiversity is not well known,” said Kerry Sink of the South African National Biodiversity Institute.Exploring the seas remains an expensive project, prompting South African researchers to reach agreements to share information with fisheries, coastal diamond mines and the oil industry.”South Africa’s plan is unique in covering all industry sectors to ensure that biodiversity planning minimizes the impact on industry,” she said.”Healthy offshore ecosystems underpin healthy fisheries and keep options open for future generations.”With growing worries about climate change, scientists say the deep seas could become an important source of protein for the planet, because water temperature changes less at great depths.That assumes that the growth of industry can be managed alongside the marine life, especially as oil companies find ways to drill in ever-deeper waters.The explosion of a BP oil rig in April off the Louisiana coast, rupturing a 1,500-metre deep well, highlighted the risks.It took five months to shut off the leak which caused the biggest the oil spill in US history, with 205 million gallons of oil flowing into the Gulf.

http://www.independent.co.uk/environment/south-africa-maps-first-deepsea-preserve-2122828.html#

Marine Reserves in UK http://www.marinereserves.org.uk/

South African Biodiversity Inst http://www.sanbi.org/

World Oceans Day ‘celebrates’ with …. an oilspill!?

World Oceans Day is June 8 http://www.theoceanproject.org/wod/.

Whlist growing up in my native New Zealand, never all that far from the coast and beaches, I enjoyed the times I was ‘beside the sea’ but tried not to take it for granted.

In time, I became involved in helping to run Seaweek activities for children and families http://www.seaweek.org.nz/ , with the resulting buzz of seeing these children gaining a very real and tangible benefit from being outdoors. I also helped set up the first marine reserve http://www.doc.govt.nz/conservation/marine-and-coastal/marine-protected-areas/  near Wellington, the capital city. All of these experiences were based on my long-time voluntary efforts with the ‘Forest and Bird’ New Zealand’s largest independent conservatioon group http://www.forestandbird.org.nz/.  

See full size image

Having travelled to the United Kingdom, and enroute visiting Italy, France and most recently Croatia, I again had a renewed awareness of how much these countries rely on, benefit on but I wonder if they take for granted (?), their coasts, wildlife and all of the incumbent natural resources.

Our fish stocks are being depleted, with Marine Conservation Society suggestions regarding sustainable fish  http://www.fishonline.org/information/MCSPocket_Good_Fish_Guide.pdf.

The whaling ban is in jeapordy  http://www.wspa-international.org/latestnews/2010/iwc-proposal-could-harpoon-commercial-whaling-ban.aspx.

The current oil spill in the Bay of Mexico only serves to illustrate how much we – or at least industry and government (?) – are willing and able to risk these finite natural resources. The images of wildlife covered in oil and Barak Obama with Tar balls on the beaches is the visual ‘tip of the iceberg’.  http://www.independent.co.uk/news/world/americas/oil-spill-creates-huge-undersea-dead-zones-1987039.html

Nature is resilent – the latest reports of islands thought to be sinking, actually doing the complete opposite - but we humans are consistently battling with Nature for more and more resources, due to an ever-expanding population, and the seas and oceans are hsowing the strain! 

Is it really ‘all up’ to the future generations or can we not start, here and now, to make that difference?

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