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Environmental troubles growing in Mid-East Gulf region due to rapid coastal development

The rapid, large scale coastal development underway in the Middle East must be better planned and managed to avoid aggravating already "severe" degradation and losses in the fragile marine ecosystems shared by eight Gulf countries – Bahrain, Kuwait, Iran, Iraq, Oman, Qatar, Saudi Arabia, and the United Arab Emirates – warns a new report today by the United Nations University. 

The Palm Jebel Ali is a landmark commercial, residential, and tourism development for Dubai, which, along with the Waterfront project, will transform an area of empty desert and sea into a bustling international community, with an estimated population of 1.7 million people by 2020 [Credit: Nakheel Properties]
The report, by UNU's Canadian-based Institute for Water, Environment and Health, says fisheries and a broad range of other valuable resources and services provided by the Gulf's ecosystems are at risk of being lost because of inadequate environmental management. 

Launched at UN headquarters in New York, the report is based on direct research and experience in the Gulf, and published literature. It says coastal development in wealthy Gulf countries has been so extensive and swift that "there has not been enough time to develop adequate regulatory, technical, and monitoring capacity to guide this growth appropriately." 

Consequences include "severe loss and degradation of important habitats, including mangroves, seagrass beds, and coral reefs," greater pollution, and other environmental setbacks, says the report, warning of potential health problems and "the permanent loss of nursery grounds for commercial shellfish and fish species," among the troubles foreseen. 

"Though focussed on the Gulf region, with its enormous new artificial islands and waterways, waterfront cities, ports and marinas, the report is relevant to other parts of the Middle East, to China, parts of South-East Asia, and elsewhere in the world where rapid coastal development is also underway," says co-author Peter F. Sale, Assistant Director of UNU-INWEH, citing UNEP predictions that as much as 91% of all temperate and tropical coasts will be heavily impacted by development by 2050. 

Says the report: "The physical characteristics and semi-enclosed nature of the Gulf provide ideal conditions for accumulation of pollutants and may create the 'pollutant trap' common in other enclosed and semi-enclosed seas. Insufficient or unreliable data exist to be able to accurately estimate the impacts of increased pollution on the Gulf's marine environment." 

"Relatively little information exists on the short and long-term environmental effects of coastal mega-projects," says lead author Hanneke Van Lavieren of UNU-INWEH. "Without good planning and careful consideration of existing coastal features, hydrodynamics and offshore seafloor conditions, the consequences of such developments could be severe and long lasting." 

"It is unwise to continue this pace and scale of development without careful consideration of the likely impacts on the health of marine ecosystems and their capacity to continue to provide environmental goods and services that directly support human wellbeing. If care is not taken, the economic cost of losing valuable coastal ecosystems will be extremely high." 

Needed in the region, according to the report: 

  • Integrated, forward-looking management programs that protect vital coastal ecosystems, and adapt to a changing climate, while permitting economic growth and ensuring a better quality of life for all coastal dwellers. 
  • An Environmental Impact Assessment (EIA) process that is scientifically rigorous, transparent, and applied by regulatory agencies with the capacity to enforce decisions and ensure compliance by the development industry -- an approach which recognizes that such assessments take time and that development must not proceed more quickly than the EIA process. 
  • Faster scientific capacity development in the region. Over the past several years, among efforts underway by others, UNU-INWEH initiated a variety of training events in the region but substantial additional improvement is needed in terms of the number and calibre of national scientists and researchers, research institutions, available equipment and funding to sustain research and development. Greater scientific knowledge, including regional environmental databases, and greater capacity in coastal environmental management are also necessary to create sound national and regional strategies for development. 
  • Additional legislation, at regional and national levels, directly linked to coastal development.

Says Ms. Van Lavieren: "Several agreements may relate in some way, but coverage is incomplete and incoherent. Current management strategies in the Gulf are ineffective and insufficient to ensure the future health of its marine and coastal resources." 

She adds that communication and public awareness can be vital components of successful coastal management because they help build consensus and support for sustainable management initiatives while also ensuring that governments are responsive to environmental needs. 

Dr. Sale notes that several Gulf countries "are in a unique position to provide a leadership role in this region given the availability of financial resources and the commitment towards environmental sustainability expressed by current leaders." 

The report offers a wealth of information related to the region's growth and environmental conditions: 

Growth 

Countries bordering the Gulf have an annual population growth rate of 2.1%, roughly double the world average. 

Pressure on coastal ecosystems is especially high in the smaller Gulf countries of Bahrain, Kuwait, Qatar and the UAE, where residents either live entirely or almost entirely within 50 km of the coast. Some countries in the Gulf region have already developed more than 40% of their coastline. 

Bahrain has expanded its land area by 91 km2, an 11% increase of its original land area, for industrial, recreational and residential purposes. 

From 1999 to 2010, the coastline of Qatar doubled from 563 to 1239 km. 

In the United Arab Emirates (UAE), four man-made coastal mega-islands (Palm Jebel Ali, Palm Jumeirah, Palm Deira and The World) will add 439 km of shoreline and approximately 120 km2 of land. 

Wastewater and other pollution 

Untreated and unused treated wastewater is frequently dumped directly into the Gulf or riverbeds and wetlands where it then infiltrates into shallow aquifers and eventually enters coastal waters. 

Enormous quantities of industrial, agricultural and domestic effluents substantially heighten the risk of contamination. 

The high concentration of offshore oil installations, tankers and terminals have made the Gulf's marine and coastal ecosystems some of the most threatened in the world by oil pollution. The region experiences "persistently high levels of hydrocarbon pollution throughout the Gulf, predominantly along the Iranian coastline." 

Meanwhile, between 70 and 90% of the freshwater supply of the Gulf's fast-growing population depends on desalination plants, which delivers toxic brine into the Gulf. 

Fisheries and reefs 

Some 70% of the Gulf's original 3,800 km2 reef cover is considered lost; all but 3% of what remains is either threatened or at a critical stage of degradation. Remaining reefs in the Gulf "are likely to degrade or disappear entirely within the next decade unless aggressive steps are taken to ameliorate the impacts of development." 

After oil and gas, fisheries represent the region's most important natural resource, and the most important renewable resource. In the Gulf, trade in fish products accounted for US$ 996 million in 2007 and fishing (including aquaculture) employs some 250,000 people while accounting directly or indirectly for the livelihoods of 1 million residents. 

Despite existing fishing regulations, poor enforcement has meant that the effort has not been controlled and many fishery species are in peril due to overexploitation. 

"Inadequate enforcement of law, ineffective management practices and lack of effective trans-boundary collaboration or global catch limits all contribute to fishery failure. Given the multitude of threats facing the Gulf's fish populations, a paradigm shift in the approach to fisheries management is needed," says Dr. Sale. 

An expanding marine aquaculture industry will place increasing pressure on already vulnerable ecosystems and native species. The fact that this industry is not yet fully developed in this region provides a unique opportunity for Gulf countries to adopt responsible and sustainable aquaculture methods. In moving forward, countries should adopt a Gulf-wide strategic and collaborative approach. 

The Gulf environment is low in fish species diversity, many of which are in peril due to overexploitation, pollution and the introduction of invasive species. Further environmental degradation and habitat loss caused by coastal development are compounding this threat. 

Climate change 

The highly populated and predominantly sandy, easily erodible and low lying coastal Gulf countries are especially vulnerable to the impacts of sea level rise through direct inundation, erosion and salt water intrusion. Studies predict that most of the Gulf's coastal areas will be extensively inundated and large parts of shorelines will migrate inland; Qatar and the UAE will be particularly susceptible and other small Gulf countries (Bahrain and Kuwait) are also at risk. 

The report urges Gulf countries to take urgent action to prepare for the potential impacts of climate change on coastal areas and resources, including adoption of national energy efficiency and renewable energy targets, promotion of the 'green building' concept and development and use of alternative and renewable energy sources. Furthermore, increased scientific knowledge and greater capacity within the field of climate change is needed to create sound national and regional strategies for adaptation which in turn are incorporated into national and regional development plans.  

Source: United Nations University via EurekAlert! [November 16, 2011]

CO2 bonds in sea ice: Small living creatures with major impact

Due to the presence of salts, the freezing point of sea water is below zero. During freezing, channels in which the salt accumulates, so-called "brine channels," are formed in the ice. They serve as a habitat for microorganisms. Together with collegues, a scientist from the Helmholtz-Zentrum Dresden-Rossendorf is currently analyzing the characteristics and distribution of these channels in which CO2 is bound by the organisms which, in turn, diminishes the greenhouse effect. 

The high salt concentration permits the contents of brine channels to remain in a liquid state even at lower temperatures, and they serve as a habitat for microorganisms [Credit: Gerhard Dieckmann/Alfred Wegener Institute]
Under normal conditions, water freezes at zero degrees Celsius. But not salt water: Due to the presence of salts, the freezing point of sea water is below zero. And sea water tends to freeze unequally. During freezing, channels in which the salt accumulates, so-called "brine channels," are formed in the ice. 

The high salt concentration permits the contents of these channels to remain in a liquid state even at lower temperatures, and they serve as a habitat for microorganisms. Together with colleagues, a scientist from the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) is currently analyzing the characteristics and distribution of these channels in which CO2 is bound by the organisms which, in turn, diminishes the greenhouse effect. 

The existing microorganisms are called diatoms and are at the bottom of the food chain in the marine ecosystem of the polar region. They also convert about 20 percent of the global CO2. The scientists want to understand how the tiny channels and their dwellers are distributed in the ice, what structures they exhibit, and under which circumstances they change. 

"Direct measurements of these structural properties are not possible without impairing the habitat," explains Dr. Sibylle Gemming from the HZDR. "That's why we're developing mathematical models which will be the basis for computer simulations." The comparison of simulated and measured properties will permit conclusions to be drawn about the channel formation process. 

According to the scientists, the findings of their research could serve as input variables for global climate models. That is why German researchers from Dresden, Bremerhaven (Alfred Wegener Institute for Polar and Marine Research within the Helmholtz Association), and Münster (Münster University of Applied Sciences) are also cooperating with colleagues from the Norwegian Polar Institute in Tromsø. 

The project, which is subsidized by the German Academic Exchange Service (DAAD) and the German Research Foundation (DFG), is headed by the quantum particle physicist Prof. Klaus Morawetz (Münster University of Applied Sciences). 

Source: Helmholtz Association of German Research Centres [November 11, 2011]

Sea change can forecast South American wildfires

Tiny temperature changes on the Atlantic and Pacific oceans provide an excellent way to forecast wildfires in South American rainforests, according to UC Irvine and other researchers funded by NASA. 


“It enables us three to five months in advance to predict the severity of the fire season,” said UCI assistant project scientist Yang Chen, lead author of a paper that will be published Friday, Nov. 11, in the journal Science. 

Wildfires, once rare in tropical forests, have become a major threat to humans and biodiversity across an “arc of deforestation” in Brazil, Bolivia and Peru due to clear-cutting and agricultural burns. The study’s authors said the new findings could aid fire and public health officials, planners issuing burn permits, and broader efforts to stem climate change. Rainforests are vital carbon dioxide storage basins, and woodlands consumed by fire across the southern continent are responsible for about a quarter of the greenhouse gases released from forests globally. 

“This work has very clear implications for conserving tropical forests,” said co-author James Randerson, UCI Earth system science professor. “During the 21st century, there are expectations that drought may intensify, and forests may become even more vulnerable. Understanding in advance whether you’re going to have an exceptionally bad year will become critically important for managing them.” 

The prediction method is similar to that for storms. Just as sea surface temperatures can be harbingers of powerful Atlantic hurricanes or El Nino conditions that influence rainfall in California and elsewhere on the Pacific Rim, they can be used to model drought-inducing atmospheric changes. Utilizing archival satellite data from NASA, Chen and fellow scientists painstakingly plotted a decade of water temperature variations and wildfire duration and intensity across central South America. 

They found that temperature increases of as little as a quarter of a degree Celsius on the Atlantic and a single degree on the Pacific matched up with more deadly blazes across broad swaths of the Amazon over the next year. 

“These changes are slight, but they trigger big effects in these tropical forest ecosystems,” Chen said. Ocean temperatures affect atmospheric winds and clouds that can reduce or increase rainfall over the continent. 

The scientists tested their theory by forecasting – based on water temperature readings – South America’s 2010 fire season and then checking actual data afterward. Their accuracy was striking. Last year saw the biggest temperature increases on both oceans and, several months later, far drier conditions on land. 

“We predicted a massive spike in fires in 2010, and it occurred,” said Randerson, citing conflagrations across hundreds of miles. In one state, they had forecast worse fires than occurred, then learned later that officials there had sharply reduced clear-cutting the year before. Overall, while deforestation has declined in the past decade, wildfires have not because of prescribed farming burns that escape into nearby woods. 

The scientists are compiling data for the 2012 fire season and plan to release their findings this winter for officials to use next year. The next step will be to see if the prediction method works for forests in Siberia, Indonesia and West Africa. 

Source: University of California - Irvine [November 10, 2011]

Sea-life paddling fast to survive climate change

Climate change is subtly altering average yearly and seasonal temperatures on land and water and looks set tohave a significant impact on Northern Ireland’s coastal ecology, according to Dr David Schoeman, a University of Ulster marine scientist and co-author of an important international study into ocean warming to be published today in the world's most authoritative scientific research journal,  Science. 


Having mapped the spread northwards of slowly rising average sea and land temperatures, the study projects thatover the next 50 years some marine life and land-based plant and animal species will relocate to “fresh comfort zones” around the north coast -- that is, to areas with temperatures they need for survival. 

Experts from the UK, USA, Australia, Spain, Germany and Denmark who compiled the study are calling for greater understanding of humankind’s dependence on marine biodiversity and the need for more research funding to provide the knowledge on which long-term response-planning can be based. 

The study, which uses global temperature records to investigate the likely climate-change responses of marine life in terms of adapting and relocating, is published today. 

Since 1960, land temperatures have risen by 1.2 ºCelsius while sea temperatures have increased by just one-third of that. 

The report suggests that while on paper the increase in temperatures seems small, there have already been ecological repercussions. Temperature bands are moving polewards, spring temperatures are arriving earlier and autumn temperatures are coming later.Other side-effects could be even more profound as global greenhouse gas emissions increase. 

Dr Schoeman said: “Our study has very significant global, national and local dimensions – from flagging up concern about the future of coral life in parts of the western Pacific Ocean to heightening awareness about the spreading effects of warming around our owncoastline.” 

The work was led by Dr Michael Burrows, from the Scottish Association for Marine Science, and Dr Schoeman,from the Environmental Sciences Research Institute at Ulster’s Coleraine campus, and was funded by the US National Science Foundation via the US National Center for Ecological Analysis and Synthesis, University of California Santa Barbara.  

The study shows that typical spring and autumn temperatures in the ocean are changing more rapidly than they are on land. 

Regional variations mean that in many areas marine organisms must respond much more rapidly to changing climate than their counterparts on land. The study examined the speed and direction at which land and marine life must travel to remain in their preferred temperatures.  Whereas fish can swim several kilometres, other bio-organisms such as coral are static. 

Dr Schoeman said: “Corals are critically important for marine biodiversity because about a quarter of thespecies of fish that we know about in the ocean are associated with corals, as are many other forms of marine life.” 

The world’s largest concentrations of corals are found in areas of the Pacific near Indonesia and the Philippines, an area also important for other marine biodiversity. For systems like this, the outlook is grim, he added. 

Northern Ireland is in a fascinating position, Dr Schoeman explained.  “The warming ocean should tend to shift species northwards along the Irish east and west coasts, converging on the north Antrim coast. Interestingly, temperatures are moving up the east coast at 5 km to10 km per year but at only half that rate up the west coast.” 

“Across the land, temperatures are moving at anywhere between 2 km to 5 km per year in the east to over 20 km per year in the west. This suggests that land-bound species tracking temperature changes could arrive at the coast within decades.” 

“Typical spring temperatures around Northern Ireland are arriving 1 to 2 days earlier each decade on the land and off the east coast, by a half to 1 day per decade earlier along the Antrim coast, but they are not really changing at all along the west coast, or even arriving a few days per decade later offshore to the northwest.”  

“By contrast, typical autumn temperatures are arriving 2 to 5 days later all around Northern Ireland’s coast but are not shifting at all on land.” 

“These complicated patterns may mean little to humans – after all, we’re talking about only a few days change per decade – but they can be important for the seasonal timing of ecological events, which are often quite precise.” 

“Despite scientific progress in so many areas, much remains to be discovered in the sea. We cannot allow out of sight to be out of mind. The sea provides us with many services that society still doesn’t fully appreciate, and without an understanding of the changes they are likely to face, we have little capacity to plan.” 

Source: University of Ulster [November 03, 2011]

New study reveals coral reefs may support much more biodiversity than previously suspected

Smithsonian scientists and colleagues conducted the first DNA barcoding survey of crustaceans living on samples of dead coral taken from the Indian, Pacific and Caribbean oceans. The results suggest that the diversity of organisms living on the world's coral reefs is seriously underestimated. The team's research "The Diversity of Coral Reefs: What Are We Missing?" was published in October in the journal PLoS ONE. 

The coral reef crustacean Sadayoshia edwardsii [Credit: Smithsonian]
At depths of 26 to 39 feet, the scientists collected dead coral from five different locations. At two sites where removing coral is prohibited, the scientists collected man-made sampling devices that had been left in the water for one year. Combined, the coral and devices had a surface area of just 6.3 square meters (20.6 square feet), yet 525 different species of crustaceans were found living on them. 

"So much diversity in such a small, limited sample area shows that the diversity of crustaceans in the world's coral reefs -- and by implication the diversity of reefs overall -- is seriously under-detected and underestimated," said Nancy Knowlton, the Sant Chair for Ocean Science at the Smithsonian's National Museum of Natural History and co-author of the survey. "We found almost as many crabs in 6.3-square meters of coral as can be found in all of the seas of Europe. Compared to the results of much longer and labor-intensive surveys, we found a surprisingly large percentage of species with a fraction of the effort." 

The world's coral reefs are some of the most endangered habitats on Earth. Given coral's rapid decline and global range, DNA barcoding offered the scientists a quick and efficient method for their survey. "DNA barcoding provides a standardized, cost-effective method of coming to grips with the staggering diversity of the world's oceans," Knowlton said. "It has enormous potential for use in broad global surveys, allowing us to find out what is living in the ocean now, and to keep track of it in the future." 

Here is a Pilumnus tahitensis [Credit: Smithsonian]
Crustaceans collected for the survey were only those the scientists could see, and ranged from 0.2 to 1.9 inches long. All animals from which DNA was sequenced were preserved so they could be examined later by taxonomists.  

"We collected dead corals because live corals defend themselves from being inhabited by other invertebrates," said Laetitia Plaisance of the Smithsonian's National Museum of Natural History and the Scripps Institution of Oceanography, and lead author of the survey. 

Once a coral dies its structure becomes covered with algae, sponges, crustaceans, worms, mollusks and other creatures. 

"Given the complexity and extent of the world's coral reefs, the survey covered only a very limited depth and habitat range," said Plaisance. "And yet we have so many more species than we ever expected." 

Present estimates of species diversity in reefs are 600,000 to more than 9 million species worldwide. "We cannot give a new estimate today, but we may be able to in a few years," Plaisance said. Using man-made sampling structures at some 50 sites around the world, Plaisance is now working with the Smithsonian and the National Oceanographic and Atmospheric Administration on another survey that will include all of the many organisms that live on coral reefs. 

Source: Smithsonian [November 02, 2011]
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