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Carbon credits for restored deltaic wetlands?

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by Len Bahr, PhD*

Five easy pieces of information:

1) Louisiana tops the list of coastal states vulnerable to relative sea level rise and hurricane flood risk.

2) Louisiana is numero uno among all fifty states in terms of industrial emissions of CO2…the greenhouse gas most responsible for global warming and sea level rise.

3) Louisiana includes the largest delta…and the most rapidly disappearing deltaic wetlands in North America.

4) In addition to providing valuable habitat and natural protection, coastal wetlands produce organic matter and remove carbon dioxide from the atmosphere at extraordinary rates. This carbon is stored in the root zone of marshes and in the wood of forested wetlands.

5) Deltaic wetlands are especially important for CO2 sequestration…because they grow on the surface of sinking soils, where organic carbon is permanently buried each year under newly accreted sediments.

In February 2009 I estimated** that Louisiana coastal wetlands may be capable of sequestering ~43 tons (3.75 tons, see correction below) of CO2 per acre each year. A global market for carbon removed from the atmosphere is developing, with a wide range of value for each ton of carbon sequestered…from $10-$150/ton. Thus a fully restored acre of wetland would be worth from $430 to $6,400/yr, ($37.5 to $563) for a mean value of ~$3,400/year ($300/year).

A colleague forwarded the press release shown below from Restore America’s Estuaries (RAE), which is mounting a program to explore the feasibility of developing a market for carbon credits specifically for coastal wetlands, as an incentive to protect existing wetlands and as a funding source to defray the extremely high cost of restoring lost ecosystems. America’s Delta, i.e., all of south Louisiana, would be a prime market for this concept but Louisiana officials have been staunchly opposed to carbon cap-and-trade proposals, as shown by this quote from the Louisiana governor’s office and referenced here:

“Governor Jindal has made it clear he believes that the House passed cap and trade bill punishes the American energy industry and that’s the last thing we need to do when we are trying to become more energy independent. The legislation will make it harder to create new manufacturing jobs in the US, and the Governor opposes it.”

I would argue that state participation in a carbon trading market should be contingent on official acknowledgment that anthropogenic carbon emissions are in fact causing climate change, including global warming.

*Founding Editor leonardbahr@gmx.com

**I estimated from published reports in February 2009 that Louisiana coastal wetlands produce ~230 g C m-2 yr-1. Because the carbon atom represents 27.3% of the molecular weight of CO2, a square meter of coastal wetland would store ~843 gCO2 yr-1 or ~3.4 million gCO2/acre yr-1, or ~43 tons CO2/acre yr-1. Editor’s note: I was just corrected by a friend who frequently checks my arithmetic that 3.4 million grams (divide by 453 grams per pound) =7506 pounds (divide by 2000 pounds per ton) = 3.75 tons. Now if you stick to the metric system, 3.4 million grams is equal to 3400 kilograms which is equal to 3.4 metric tons.

Here’s the press release from RAE:

Restore America’s Estuaries to Lead Effort to Introduce Coastal Wetlands Restoration onto International Carbon MarketsRAE Partners with Silvestrum and ESA PWA on Landmark Initiative and Requirements

WASHINGTON (April 6, 2011) –Restore America’s Estuaries (RAE) announced today that it will lead a landmark initiative to help coastal wetlands restoration and protection projects issue carbon credits on the international voluntary carbon market for the first time.

RAE, a national advocacy organization dedicated to coastal and estuarine habitat restoration, will lead a technical working group that will develop requirements for quantifying and crediting the greenhouse gas benefits of several new types of wetlands conservation projects under the Verified Carbon Standard (VCS) Program.

“Coastal wetlands hold vast, untapped potential to trap atmospheric carbon, particularly carbon dioxide, one of the chief culprits behind global warming and climate change,” said Steve Emmett-Mattox, who will oversee the project as RAE’s Senior Director of Strategic Planning and Programs.

The VCS Program is a robust global standard and program that has been used to develop hundreds of greenhouse gas-reducing projects and millions of GHG credits validated and verified to recognized global criteria. VCS provides requirements for crediting various types of Agriculture, Forestry and Other Land Use (AFOLU) projects, including those on peatlands, but has yet to develop requirements specific to crediting projects in other types of wetlands. The working group will draft requirements for crediting a range of wetlands project types, likely to include mangroves and coastal and tidal wetlands.

The working group, funded in part by New Orleans-based Entergy Corporation and KBR, will be led by RAE in partnership with ESA PWA, one of the nation’s foremost wetland restoration consulting firms headquartered in San Francisco, and Silvestrum, a Dutch-based firm that assists in the creation of carbon assets in land-use projects for compliance and voluntary markets worldwide. Leading wetlands scientists will contribute their expertise in core areas: Dr. Boone Kauffman is a mangroves expert with the USDA Forest Service; Dr. Patrick Megonigal is a wetland biogeochemist with the Smithsonian Environmental Research Center; and Dr. Hans Joosten is a peatlands specialist with Greifswald University, Greifswald, Germany.

“New studies indicate that wetland soils sequester carbon at rates 10 to 50 times greater than terrestrial forests,” says Emmett-Mattox. “Unfortunately, this is a good news-bad news situation. We have discovered a huge resource in the fight against global warming and sea level rise at a time when our coasts and their wetlands are at a crisis point,” he says.

While the global extent of coastal wetland systems, including mangroves, salt marsh, and freshwater tidal marsh, is not fully known, estimates are that there are 852,000 km2 and they are declining at rates four times faster than terrestrial ecosystems. Conversion and drainage of wetlands releases significant quantities of CO2 directly to the atmosphere. For converted wetlands with organic-rich soils, the ongoing emissions may persist for decades releasing carbon pools that built up over hundreds and thousands of years.

In addition to obvious environmental benefits, bringing wetlands projects on to the international carbon markets may help save or even expand their global range by making restoration projects attractive to investors and developers because of the co-benefits derived from them, notes Emmett-Mattox.

“Many industries operating in the coastal zone work diligently to be good coastal stewards,” he says. “The ability to gain carbon offsets for coastal protection and restoration projects will provide a new incentive and tool for corporate social responsibility and could ignite significant private investment in critically-needed coastal projects.”

Nationally, the potential for tidal wetlands restoration exceeds several million acres, and the primary limiting factor for additional coastal habitat restoration, including wetland projects, is funding. The coastal wetland restoration community is now beginning to seek carbon finance as a means to undertake additional projects.

Restore America’s Estuaries represents 11 regionally based “Save the Bay” organizations that collectively undertake more than 100 coastal habitat restoration projects each year. In the United States, hundreds of additional projects are carried out each year by private landowners, non-profit organizations, state and local governments, tribes, and federal agencies as well.

Recognizing the potential for coastal wetlands to sequester carbon, and the need for new investment in restoration and protection nationwide, RAE convened a blue ribbon panel to review the status of the science and policy and establish an action plan for developing a tidal wetlands GHG offset protocol. The Panel consists of experts in wetlands science and management, carbon sequestration, GHG accounting, and offsets protocols and markets.  The Panel released the Findings of the National Blue Ribbon Panel on the Development of a Greenhouse Gas Offset Protocol for Tidal Wetlands Restoration and Management: Action Plan to Guide Protocol Development in August 2010.  Developing the VCS wetland requirements will meet the first goal of the Action Plan, defining eligible project activities and habitat types.

Additional support for the wetlands carbon requirements project will come from Dr. Igino Emmer of Silvestrum, lead-author of the VCS Afforestation, Reforestation and Revegetation requirements and the Peatland Rewetting and Conservation requirements, who will serve as the lead technical writer. ESA PWA’s Dr. Steve Crooks, a wetland scientist with international expertise in wetlands and carbon sequestration, is the lead wetland scientist for the team.

In May, the technical working group will begin to develop draft requirements for crediting the additional wetlands project types. By September, the group aims to complete a first round of draft requirements, governing issues such as defining eligible project areas and carbon pools, establishing baseline scenarios, quantifying GHG emissions reductions in project and baseline scenarios, monitoring and measuring of carbon stocks, and addressing leakage and other non-permanence issues. The draft requirements will undergo peer review, public consultation and revision before being incorporated into the VCS Program requirements.

Founded in 1995, Restore America’s Estuaries is a national alliance of 11 regional, coastal conservation organizations with more than 250,000 volunteer-members dedicated to preserving our nation’s estuaries. RAE members include: the American Littoral Society, Chesapeake Bay Foundation, Conservation Law Foundation, Coalition to Restore Coastal Louisiana, Galveston Bay Foundation, North Carolina Coastal Federation, People for Puget Sound, Save The Bay-Narragansett Bay, Save The Bay-San Francisco, Save The Sound-a program of the Connecticut Fund for the Environment, and Tampa Bay Watch.

For more information:

Steve Emmett-Mattox/Restore America’s Estuaries: 720-300-3139; sem@estuaries.org

Dr. Stephen Crooks/Philip Williams & Associates, Ltd.: 415-262-2358; scrooks@esaassoc.com

  1. You actually make it appear really easy together with your presentation but I find this topic to be actually one thing that I think I would never understand. It kind of feels too complicated and very vast for me. I’m having a look forward on your next publish, I will try to get the hang of it!

  2. Kelly Haggar says:

    Guys,

    Trust me on this one . . . there’s a LOT more going on here than the coast of La. SERIOUS money is on the line, supported by some heavy duty lobbying from the mitigation bankers. You might also want to take a deep look at the “stacking” dispute highlighted between George Kelly and George Howard, current and former directors of the National Mitigation Banking Association.

    Of course the whole concept of “mitigation” per se is a whole world unto itself. Those of us from a different mindset think much more about “rent seeking” than we do about “functions and values.” Having seen the facts on the ground and trolling through RIBITS tends to widen the scope of one’s analysis.

    For a legal analysis of some points, see:

    Stacking Opportunities and Risks in Environmental Credit Markets by Jessica Fox, Royal C . Gardner, and Todd Maki, 41 ELR 10122 ENVIRONMENTAL LAW REPORTER 2-2011

    Editors’ Summary

    Environmental credit markets for mitigating impacts to wetlands, endangered species, water quality, and carbon emissions have been established throughout the United States. Recently, there has been much debate about whether a conservation project should be allowed to produce credits for multiple markets, a practice broadly referred to as credit stacking. But producing
    stacked credits for multiple markets using one conservation action is not itself controversial; rather, it is the resulting transactions—the sale or transfer of the stacked credits—that can be contentious. Agency rules regarding the relationship between environmental credit markets are not clear and sometimes conflicting. Despite this, projects are moving forward that establish frameworks for selling stacked credits. To reduce uncertainty for both ecosystems and markets,
    it is critical to establish coordinated policies and regulations to ensure that environmental mitigation markets result in real, verified, and additional mitigation, especially when credit stacking is involved.

  3. riverrat says:

    The state has been happy to talk about C02 credits from sequestration in coastal wetlands because they thought they’d get money for it, not caring about the discrepancy that their opposition to national climate policy caused. What they won’t discuss are reductions in emissions. but without a national climate bill(something the La delegation helped to scuttle), the prospects for someone buying the C02 credits from La wetlands are greatly reduced. The EU can’t buy everything.

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