WRI Stories Feed: Post Millennium Ecosystem Assessment: From Assessment to Action (MA)

Belize’s Reefs and Mangroves Tagged with High Economic Value

Paul Mackie — Fri, 14 Nov 2008 00:00:00 -0500

Three key services provided by coral reefs and mangroves in Belize are worth an estimated US$395 million to US$559 million per year, according to a report released today by the World Resources Institute and the World Wildlife Fund.

Annual Economic Contribution of Coral Reefs and Mangroves in Belize”Putting a dollar value on the goods and services provided by reefs and mangroves helps to translate them into a language that everyone speaks,” said Lauretta Burke, a senior associate at WRI. “Hopefully, these findings will contribute to well-informed decisions regarding the management of these critical resources.”

The report, Coastal Capital: Belize, estimates the annual economic value of coral reef- and mangrove-associated tourism in Belize at between US$150 million and US$196 million, accounting for between 12 and 15 percent of the Caribbean nation’s GDP. Benefits from reef- and mangrove-dependent fisheries contribute a further US$14 million to US$16 million to the economy.

Reefs and mangroves also protect coastal properties from erosion and wave-induced damage. WRI estimates that Belize’s coral reefs provide an estimated US$120 million to US$180 million in avoided damages per year. Mangroves protect the coastline from both waves and storm surge, providing an additional US$111 million to US$167 million in protection annually.

Despite growing recognition of the economic importance of coastal resources, reefs and mangroves face growing threats from unchecked coastal development, over-fishing, and pressures from tourism. Climate-related changes such as warming seas and fiercer storms will compound these impacts in the future.

“The goods and services offered by coral reefs and mangroves are frequently overlooked or underappreciated in coastal investment and policy decisions,” said Emily Cooper, a research associate at WRI and lead author of the study. “The amount currently invested in protecting Belize’s coral reefs and mangroves is very small when compared to the contribution of these resources to the national economy.”

Belize’s Marine Protected Area (MPA) system is widely hailed as an example of forward-thinking in marine conservation. Consisting of 18 protected areas managed primarily by the country’s fisheries and forestry departments in collaboration with local NGOs, the MPAs are an important draw for divers, snorkelers and sport fishermen, and contain no-fishing areas that help to maintain stocks of key commercial species. The system, however, is under-funded, and staff, fuel, and equipment limitations make it difficult to curb illegal fishing and monitor visitation in most of the reserves.

“Belize’s reefs and mangroves offer crucial socio-economic benefits but are already threatened by overuse, degradation and fragmentation. Climate change will undoubtedly compound these through increased frequency of impacts from mass bleaching and storm occurrences, as well as coastal erosion and sedimentation,” said Nadia Bood, Mesoamerican reef scientist and climate change officer for WWF Central America. “This makes urgent the need to act now to alleviate human threats and increase the resilience potential of these very important ecosystems.”

WRI’s Coastal Capital project receives key financial support from the Oak Foundation, the Netherlands Ministry of Foreign Affairs, SwedBio, the Campbell Foundation, and the MacArthur Foundation. The full report can be accessed on WRI’s website at http://www.wri.org/publication/coastal-capital-belize .

EPA Partners With WRI to Heighten Awareness of Ecosystem Services

Paul Mackie — Wed, 29 Oct 2008 11:13:15 -0400

The World Resources Institute (WRI) and the U.S. Environmental Protection Agency (EPA) today announced a collaboration to deliver improved science and practical tools to help companies and governments protect ecosystems and address climate change.

“This is an important collaboration in bringing research on ecosystem services into the mainstream of science, business and public policy,” said Rick Linthurst, national program director of the EPA’s Ecological Research Program.

WRI’s ecosystem services brochure

Ecosystem services are the benefits people obtain from forests, wetlands, and other ecosystems. A forest, for example, not only provides wood for timber and paper but also controls erosion, purifies water, stores carbon dioxide, and offers recreation.

The partnership will bring a greater recognition and understanding of the importance of ecosystems to economic development and human well-being. It will also help planners better determine development options that allow affected natural resources to continue to produce services that meet the needs of current and future generations. Craig Hanson, acting director of WRI’s People and Ecosystems Program, added, “This collaboration will link EPA’s quality scientific research on ecosystem services with WRI’s work to help private- and public-sector leaders make the connection between healthy ecosystems and the attainment of their economic goals. This partnership will make our Corporate Ecosystem Services Review, mapping of ecosystem services, and economic valuation efforts even more powerful.” Businesses, local and state governments, researchers, and international organizations - which are increasingly retooling their environmental-management systems to address ecosystem services - will benefit from the partnership. As part of the collaboration, Dr. Suzanne Marcy, lead for outreach and education in the Ecological Research Program of the EPA’s Office of Research and Development, will be based at WRI’s headquarters. She will focus on linking emerging scientific data about the health and economic value of ecosystem services with WRI’s various projects on water quality, biofuels, coral reefs, and business sustainability, among others.

In addition, WRI’s research will inform the EPA Ecological Research Program’s initiatives in the Coastal Carolinas, the Willamette Valley in Oregon, Tampa Bay, the upper-Midwest, and the Southwest.

Subprime Development: the Mother of All Collapses

Janet Ranganathan — Mon, 06 Oct 2008 00:00:00 -0400

All eyes are on Wall Street as it completed another roller coaster week of financial turmoil. Can things get worse? Actually, yes.

The chronic degradation of our planet’s life support system is producing what could be termed a “subprime development” crisis. Its consequences, while less publicized, may ultimately far exceed those of the current market turmoil.

Last month’s meetings of world leaders at the UN Assembly to discuss progress in eliminating poverty provided a timely opportunity to address and learn from the striking parallels between these global economic and ecological crises.

Both crises are driven by a short-term-profit mentality—benefits reaped today at the expense of tomorrow’s generations. Both result from a value system that encourages us to live beyond our means. Both result in a mismanagement of assets due in part to misaligned economic and financial incentives and a lack of information to connect actions by the few with potential harmful outcomes for the many.

Subprime mortgages were the initial culprit in the financial crisis. The culprit in the global degradation of nature’s support system is subprime development—development that undermines nature’s capacity to continue providing essential goods and services.

All of us, and especially the poor, depend daily on nature’s bounty—for freshwater and food, shelter and building materials, pollination and medicines. Yet no less than two thirds of global ecosystem goods and services have been degraded by humanity’s heavy footprint. Dams to increase power supply to cities and irrigation to croplands are built at the expense of a river’s capacity to support fisheries or sustain wetlands that provide water filtration and food control. Agriculture expansion to increase food and biofuel production often contributes to deforestation, soil erosion and aquatic dead zones the size of New Jersey.

Two specific examples. The Brazilian Amazon was once “blue chip stock,” providing generous returns to citizen shareholders around the globe, continuously recycling carbon dioxide into oxygen, cleaning air and regulating regional and global climate. One fifth of this great asset has now been lost to loggers, farmers, and ranchers.

Likewise, coastal wetlands once provided storm protection insurance to southeastern Louisiana, acting as a natural speed bump. When Hurricane Katrina slammed into the Gulf Coast in 2005, that insurance policy failed, just as precipitately as AIG has collapsed, and with far greater human consequences. A prime contributor to the scale of the disaster was the loss of up to 40 square miles of wetlands a year for the last several decades.

The costs of the U.S. mortgage collapse and Wall Street bailout will fall primarily on taxpayers. In the ecological parallel, the poor are often the hardest hit. Of the two billion people living on less than $2 a day, three quarters live in rural communities that depend on natural ecosystems for sustenance and livelihoods. If subprime development persists, many will pay: first with their livelihoods, and then with their lives.

We have options to curtail ecological degradation. Recent evaluation, for example, shows the potential of using transferable catch shares to avoid the collapse of fisheries. We already have all the technologies we need to address global climate change, which is exacerbating ecosystem degradation in many parts of the world. We just need to deploy these technologies broadly, and with the same urgency poured into solving the global financial crisis.

The rescue package will require a unified approach that includes integrated risk management, subsidies to support ecological restoration, greater use of market-based approaches, application of new technology, and new ways to integrate risks to ecosystems and those that depend on them into all types of decisions—not just those taken by environmental agencies.

As on Wall Street, reform will require a sea change in attitudes, policies, institutions and behavior. Time is running out. No one-time government measure or golden parachute can bail out nature.

High Economic Values Placed on Coral Reefs in Tobago and St. Lucia

Paul Mackie — Sat, 14 Jun 2008 00:00:00 -0400

Direct annual economic benefits of tourism and fisheries resulting from coral reefs amounts to US$94 million in St. Lucia and US$44 million in Tobago. Those numbers amount to 11 percent and 15 percent of those Caribbean islands’ yearly gross-domestic product.

“The health of Tobago’s reefs is vital to the island’s tourism product,” said Cmdre. Anthony Franklin, director of the Institute of Marine Affairs. “Tourists and local residents should benefit greatly in the future because of the advances these economic baseline findings could provide towards smart policies.”

The findings were announced here today along with the release of the full study, Coastal Capital - Economic Valuation of Coral Reefs in Tobago and St. Lucia, by the World Resources Institute (WRI), the Buccoo Reef Trust (BRT), the Institute of Marine Affairs, the Government of St. Lucia, and many others.

“Hopefully, knowing the economic value of the reefs will help policymakers develop and manage these beautiful and beneficial coastal areas with caution and care,” said Lauretta Burke, senior associate at WRI and lead author of the study, which puts dollar values on tourism, fisheries, and shoreline protection provided by reefs.

“Reef-valuation numbers arm government officials with powerful information they can use to make educated policy. They also provide the public and other interested parties with something they can use to push officials to make smart policies,” added Dr. Owen Day, director of the BRT.

Coral Reefs in Tobago

In Tobago, more than half of tourists dive, snorkel, or take a glass-bottom boat to the Buccoo Reef. Reef-associated tourism in Tobago contributes an estimated US$43 million in direct expenditure, such as food, lodgings, and ocean-related recreation. Two estimates not captured within the Tobago economy were also determined. One, the annual value of local residents’ use of the reefs and coralline beaches is estimated between US$13 million and US$44 million. Two, the additional satisfaction derived by participants above what they paid for dive and snorkel trips is estimated at US$1 million.

In St. Lucia, more than one-quarter of tourists dive or snorkel during their visits. The direct economic impact from reef-associated tourist expenditure was more than US$91 million last year. In addition, the annual value of local residents’ use of the reefs and coralline beaches is estimated between US$52 million and US$109 million. Additional satisfaction derived by participants above what they paid for dive and snorkel trips is estimated at US$2.3 million.

Fishery activity impacted by coral reefs have a much smaller economic impact, but provide other important benefits such as jobs, cultural value, and a safety net of food, especially during difficult economic time periods. The annual direct economic impact of coral reef-associated fisheries is estimated between US$700,000 and $US1.1 million for Tobago and US$400,000 to US$700,000 for St. Lucia.

Tobago, which is about 26 miles long and six miles wide, has coral reefs that protect nearly 50 percent of its shoreline. The annual value in 2007 of shoreline-protection services provided by coral reefs - in potentially avoided damages - is estimated to be between US$18 million and $US33 million.

St. Lucia, which is about 30 miles long and 14 miles wide, has coral reefs that protect 44 percent of its shoreline. The annual value in 2007 of shoreline-protection services provided by coral reefs - in potentially avoided damages - is estimated to be between US$28 million and $US50 million.

Funding for this project came from the MacArthur Foundation, the United Nations Environment Program - Caribbean Environment Program, the Ocean Foundation, the Henry Foundation, the Curtis and Edith Munson Foundation, the Netherlands Ministry of Foreign Affairs, SwedBio, the International Coral Reef Action Network (ICRAN), and the Buccoo Reef Trust.

Food Price Crisis Triggers Questions about Global Food Security

Zachary Sugg — Fri, 25 Apr 2008 15:00:17 -0400

Skyrocketing food prices have triggered riots across the developing world and forced the world’s largest food aid agency to confront a $500 million deficit. The media are focused on short-term consequences, but there are also concerns about the long-term forecast for global food security, poverty, and hunger.

A food line in Africa

Global food prices have been rising steadily since 2000, and are up almost 50 percent in the last year alone. Low-income countries that import more food than they export have been hit hardest. Thirty-seven countries—21 of which are in Africa—are in a food security crisis, according to the United Nations Food and Agriculture Organization (FAO).

The World Bank recently announced that the current food situation could push 100 million people into deeper poverty, undoing years of progress in the fight against global poverty and hunger. Poor households spend between 60 percent to 80 percent of their income on food, compared to only 10 percent to 20 percent in most industrialized countries.

FAO Food Price Index: February 2007 - January 2008.
Source: FAO, 2008

What Are the Causes?

Despite several record-breaking harvests, world cereals production between 2000 and 2007 fell well short of consumption. The shortfall has forced the depletion of world grain stocks—a useful proxy for global food security—which are now at their lowest levels in 25 years.

There are several commonly acknowledged drivers behind the current food price spikes, including:

High price of oil, manifested in increased fertilizer and fuel costs
Increased demand for meat and dairy products in the developing world, which requires more grain be fed to livestock
Diversion of crops for biofuel production
Adverse weather conditions, such as the recent six-year Australian drought that decimated rice production
Commodity speculation by investors, and
Lack of access to improved inputs and markets amongst smallholder farmers in the developing world—particularly in sub-Saharan Africa—which limits their ability to react to the incentives created by increased demand, and
Domestic policy responses to higher food prices in developing countries—such as export taxes, bans, or other restrictions—which exacerbate the problem.

These factors together have created a “perfect storm” that has driven food prices up. Although adverse weather conditions and commodity speculation may nudge food prices up in the short term, the rest of these drivers appear to be longer-lasting, and their effects are likely to be felt for several years.

Short-Run vs Long-Run Measures for Global Food Security

The FAO forecasts a 2.6 percent rise in cereal production in 2008, which would result in a record harvest of over two billion metric tons. If this prediction materializes—much depends on unpredictable weather—the current food crisis should ease somewhat. Even so, experts predict that prices will remain high at least through 2015, indicating that short-term policy interventions are necessary to combat hunger over the coming decade. These actions should include targeted safety nets for vulnerable populations, such as the urban poor; increased support for food aid agencies; and short-run trade policy measures, such as reducing tariffs and taxes on key staples.

Over the long-run, ensuring global food security will require greater effort. While most experts believe that the world’s agro-ecosystems, coupled with improved technology, have the physical capacity to satisfy demand through the 21st century, this will not happen if current circumstances prevail. Agricultural trade barriers, environmental degradation, and the under-performance of African agriculture, energy efficiency, and the restoration of marginal lands must all be addressed.

Furthermore, climate change threatens to exacerbate food insecurity in the world’s poorest regions. The Intergovernmental Panel on Climate Change (IPCC) predicts that rising temperatures will decrease yields in 40 developing countries, mainly in sub-Saharan Africa, and that three degrees Celsius of warming will increase the price of food by 40 percent. Without concerted global action to help vulnerable populations adapt to a warming climate, while also addressing the other drivers of food security described above, global hunger will not be tackled this century.

*Photo by Peter Casier via Flickr

The 10 Big Questions For Corporate Forest Product Purchasing

Ruth Nogueron — Thu, 03 Apr 2008 01:00:38 -0400

Corporate procurement managers are increasingly looking for ways to ensure that wood and paper-based products are environmentally and socially sound. The WRI/WBCSD procurement guide being released today is a toolbox to help them.

There are several reasons for the shift in procurement practices, including protection of sensitive ecosystems and forests, increasing demand from consumers for sustainable products, reduced costs, and competitive brand positioning. But until recently, finding concise and credible advice on sustainable procurement issues has been a maze for many corporate managers.

That maze becomes a lot simpler today, with the release of the Sustainable Procurement of Wood and Paper-Based Products, a joint report from WRI and the World Business Council for Sustainable Development (WBCSD). The report is an overview of sustainable procurement for this sector, together with a virtual rolodex of 23 purchasing resources and tools, all in one location.

10 Things You Should Know

10 Elements of Sustainable Forest Purchases

What are the key issues around sustainable procurement of wood and paper-based products? The Procurement Guide provides a comprehensive overview, and a directory of resources for managers to develop their own purchasing policies.

Origin: Where do the products come from?
Information accuracy: Is information about the products credible?
Legality: Have the products been legally produced?
Sustainability: Have forests been sustainably managed?
Special places: Have special places, including sensitive ecosystems, been protected?
Climate change: Have climate issues been addressed?
Environmental protection: Have appropriate environmental controls been applied?
Recycled fiber: Has recycled fiber been used appropriately?
Other resources: Have other resources been used appropriately?
Local communities and indigenous peoples: Have the needs of local communities or indigenous peoples been addressed?

Leading Companies Responding to Ecosystem Degradation

Paul Mackie — Mon, 10 Mar 2008 15:35:37 -0400

Corporate Ecosystem Services Review road-tested by Akzo Nobel,

BC Hydro, Mondi, Rio Tinto, and Syngenta

Global warming may dominate headlines today. Ecosystem degradation will do so tomorrow.

To prepare businesses for this new landscape, three organizations today launched a set of guidelines designed to help companies proactively develop strategies to manage risks and opportunities arising from ecosystem degradation.

The guidelines, called the “Corporate Ecosystem Services Review,” were developed by the World Resources Institute (WRI) in collaboration with the Meridian Institute and World Business Council for Sustainable Development (WBCSD). Five WBCSD members - Akzo Nobel, BC Hydro, Mondi, Rio Tinto, and Syngenta - “road-tested” the methodology and provided input to its design.

“The world’s forests, wetlands, and other ecosystems are under tremendous pressure due to climate change, land conversion, and many other factors,” said Jonathan Lash, president, WRI. “As ecosystems degrade, companies will face operational, regulatory, and reputational risks while those that offer solutions may find new business opportunities and new sources of revenue.”

Ecosystems provide companies with a wide variety of benefits or services including freshwater, wood, pollination, climate regulation, and protection from natural hazards, to name a few.

“Ecosystem services are often unacknowledged, yet they underpin many corporate activities,” said John Ehrmann, managing partner of the Meridian Institute. “I am pleased with the feedback from company managers who are finding the guidelines helpful for developing strategies that improve both corporate performance and ecosystem stewardship.”

The road-testers found that the guidelines can provide a number of other benefits as well. They can help companies anticipate new markets and government policies that may emerge in response to ecosystem degradation. They can strengthen corporate environmental impact assessments by adding considerations traditional methods may overlook. They also can help companies better manage conflicts over resources, identifying options for better trade-offs between ecosystem services.

“The methodology helped us identify and rank emerging problems, and provided us with a framework for turning risks into opportunities,” said Peter Gardiner, natural resources manager at Mondi, a leading international paper and packaging manufacturer.

Mondi’s newfound strategies include a number of operational changes that will increase the company’s efficiency in using freshwater, a scarce ecosystem service, and lead to new markets for the company’s byproducts.

“The Corporate Ecosystem Review helped us to better understand how a number of emerging environmental changes are likely to affect our business and how our company might best position itself to respond to these changes,” said Steve Hunt, senior vice president, Asia-Pacific, Eka Chemicals, a division of chemical giant Akzo Nobel.

Some road-testers, such as Mondi and BC Hydro, used the guidelines to gain insight into the direct implications that ecosystem trends pose for them. Other road-testers, such as Akzo Nobel and Syngenta, applied the methodology to understand the risks faced by a segment of their customers due to ecosystem degradation and, in turn, discovered opportunities for new products or services that address these risks. The guidelines profile these and other road-test experiences.

“We’re going to be hearing a lot about the Corporate Ecosystem Services Review. A couple dozen more WBCSD members are already taking it up this year,” said Björn Stigson, president of the WBCSD. “Leading companies realize that they need to be prepared for the business challenges posed by ecosystem decline.”

The guidelines were launched at WBCSD’s annual conference of delegates in Switzerland. For a copy of The Corporate Ecosystem Services Review, visit http://www.wri.org/ecosystems/esr.

Ironically, Flood Control is Flooding New Orleans

Karen Bennett — Wed, 05 Mar 2008 10:17:12 -0500

Man-made flood-control systems—such as levees, upstream dams, and canals—continue to be responsible for widespread damage to the New Orleans and Louisiana landscapes.

The levees and canals on the Mississippi River provide infrastructure for oil excavation, shipping, and land development, yet they are the primary culprits in the degradation of natural wetlands. Many other ecosystems changes, such as deforestation, species invasion, and land cultivation, have also contributed to wetland loss in the region.

Wetlands act as natural speed bumps for severe weather. Storm waters lose energy as they pass over swamps, marshes, or mangrove forests, which helps reduce flooding. One study found that two to four miles of wetlands lessen a storm surge height by up to 12 inches.

Unfortunately, the coastal wetlands that provide this protection are disappearing rapidly. Louisiana has been losing up to 40 square miles of marsh per year for several decades. In other words, a football-field-sized segment of wetland disappears into open water every 30 minutes. The open sea has advanced some 20 miles inland due to wetland degeneration.

In its natural state, the Mississippi River periodically changed course within a 200-mile wide arc known as the Mississippi Delta. The delta forms as the river deposits silt over time, creating land mass and wetlands. Historically, this counteracted the natural subsidence that occurred in the region by flooding low lying areas and replacing the soil that was lost. In contrast, l evees confine the Mississippi River to one path. As a result, the Mississippi is depositing its silt deep into the Gulf of Mexico and the Delta is sinking. Additional sinking results from underground oil, gas, and water extraction.

The impact of human activity in southern Louisiana became painfully clear when Hurricane Katrina hit in August 2005. Ecosystem degradation, and in particular the loss of wetlands and the shoreline protection ecosystem services they provide, contributed to the devastating scale of the disaster. Eighty percent of New Orleans flooded, power was out across four states for several weeks, over 1,000 people drowned, and levels of pollution were extreme. The economic damage of Katrina has been estimated to be in the range of $200 billion.

To quote Albert Einstein, “the significant problems we face cannot be solved with the same level of thinking used when we created them.” The State of Louisiana has estimated that economic losses from public-use and infrastructure would be $137 billion over 50 years if wetland loss were to continue unchecked. It is expensive to recreate the storm and flood protection services of wetlands once they are lost, yet maintaining and protecting them continues to be ignored. To date, the U.S. Army Corps of Engineers has used most of its allocated $7 billion reconstruction budget for traditional engineering projects.

WRI has a new report, Ecosystem Services: A Guide for Decision Makers, which will help people avoid the inadvertent loss of ecosystem services and connect nature’s health to the achievement of social and economic goals.

Immigration Linked to Degraded Ecosystem

Karen Bennett — Thu, 17 Jan 2008 12:12:19 -0500

Border security is not typically recognized as being tied to environmental changes, but in this recent article by The New York Times, the links are clear. It details how declining fish catches in northwest Africa are fueling immigration to Europe.

With fish populations in northwest Africa collapsing, regional economies are struggling and local populations are finding themselves without one of their staple foods. That means more people are willing to take greater risks by migrating for a fresh beginning in a new country.

Fishers with their catch

People everywhere depend on nature—that is, ecosystem services—for their well-being. Yet many of these services are in a state of decline. In fact, according to the Millennium Ecosystem Assessment, nearly 2/3 of ecosystem services are in worse shape than they were a half-century ago. The bottom line of this finding? Nature’s benefits can no longer be taken for granted. According to the Times article, fish populations in Senegal and from other parts of the region were once abundant enough to support livelihoods. But now, families find they are barely scraping by. Major fish stocks are dwindling because of fishing by local boats as well as international fleets, including from the European Union, China, and Russia. This crash in natural resources is encouraging northwest African nationals to attempt migration to more abundant societies. In 2007, about 31,000 Africans attempted to flee to the Canary Islands, which serve as a gateway to Europe. Of these, 6,000 disappeared or died.

WRI’s Mainstreaming Ecosystem Services Initiative brochure–download

Northwest African governments, lured by the promise of money from international trawlers and economic growth, have driven one of their most important natural resources to depletion. European officials, on the other hand, saw that their own fish resources were depleted decades ago and arranged deals to harvest the seas of northwestern Africa. In both cases, decision makers did not realize that many of their decisions both depend on and impact the ecosystem services nature provides.

In northwest Africa, new government policies to attract international fishing fleets in the hopes of payments and economic growth were dependent on wild fish stocks remaining abundant. Likewise, decisions by European officials to exploit fishing grounds in Africa had unforeseen consequences because the ecosystem service was degraded. Motivated by hopes of economic growth and cheap food for their populations, European nations are instead faced with floods of undocumented immigrants. Recognizing the links between ecosystem services and development goals can help us protect ecosystems from development. Perhaps even more importantly, we need to consider how to invest in managing ecosystems for development. WRI is working to solve problems exactly like these in northwest Africa through our recently launched Mainstreaming Ecosystem Services Initiative. Download our brochure: What Are Ecosystems Doing For You? Mainstreaming Ecosystem Services Initiative

Choking Coastal Waters

Mindy Selman — Fri, 04 Jan 2008 15:39:58 -0500

My team at WRI, together with Dr. Bob Diaz at the Virginia Marine Institute, has identified and mapped 415 eutrophic and hypoxic coastal systems worldwide through an extensive literature review. Of these, 169 are documented hypoxic areas, 233 are areas of concern and 13 are systems in recovery.

World Hypoxic and Eutrophic Coastal Areas

Our findings highlight the dramatic growth of areas receiving the endflows of nitrogen and phosphorus created by agriculture, increasing industry, fossil fuel combustion, and population growth. More than 1,000 scientists estimated, in the Millennium Ecosystem Assessment, that, as a result of human activities over the past 50 years, the flux of nitrogen has doubled over natural values while the flux of phosphorus has tripled.

The effects of nutrient pollution in coastal waters may include excessive growth of algae, including harmful algae species that can cause fish kills and shellfish poisoning in humans; reduced species diversity and dominance of gelatinous organisms such as jellyfish; damage to coral reefs; and formation of oxygen-depleted “dead zones.”

The map shows three categories:

Documented hypoxic areas - Areas with scientific evidence that hypoxia was caused, at least in part, by an overabundance of nitrogen and phosphorus.
Areas of concern - Systems that exhibit effects of eutrophication, including elevated nitrogen and phosphorus levels, elevated chlorophyll a levels, harmful algal blooms, changes in the benthic community, damage to coral reefs, and fish kills. These systems are impaired by nutrients and are possibly at risk of developing hypoxia. Some of the systems may already be experiencing hypoxia, but lack conclusive scientific evidence of the condition.
Systems in recovery - Areas that once exhibited low dissolved oxygen levels and hypoxia, but are now improving. For example, the Black Sea recovery is largely due to the economic collapse of Eastern Europe in the 1990s, which greatly reduced fertilizer use. Others, like Boston Harbor in the United States and the Mersey Estuary in the United Kingdom also have improved water quality resulting from better industrial and wastewater controls.

The actual extent and prevalence of eutrophication is only beginning to be studied. Some countries, such as the United States and European Union, have undertaken comprehensive coastal surveys in the past five years, and have the most comprehensive coastal data on eutrophication. However, data do not exist or are not publicly available for areas that may be suffering from the effects of eutrophication.

Given the state of global data, the actual number of eutrophic and hypoxic areas around the world is likely to be greater than the 415 listed here. The most under-represented region is Asia. Asia has relatively few documented eutrophic and hypoxic areas despite large increases in intensive farming methods, industrial development, and population growth over the past 20 years. Africa, South America, and the Caribbean also have few reliable sources of coastal water quality data.

It is critical that we begin to close the gaps in our knowledge about where eutrophication is occurring globally.

As part of WRI’s work on this topic, we will release a policy note in March 2008 entitled Eutrophication and Hypoxia in Coastal Areas: A Global Assessment of the State of Knowledge.