The Economic Benefits of the Proposed St. George Unangan Heritage National Marine Sanctuary

The Economic Benefits of the Proposed St. George Unangan Heritage National Marine Sanctuary

This study presents an economic assessment of the impacts and benefits of implementing a national marine sanctuary around St. George Island, Alaska. Both market and non-market impacts were assessed using the benefit transfer method and data on local markets. This study finds that implementing a national marine sanctuary around St. George Island may have substantial benefits, including: at least four full-time jobs, $200,000 in annual government spending to support a sanctuary office, $140,000 to $1 million in expenditures due to research grants, $55,000 to $240,000 in annual recreation expenditures, $22,000 to $44,000 in estimated subsistence harvest annually, and $2.8 billion to $3.3 billion in annual non-market ecosystem service benefits.

Open Space Benefits in the City of El Paso

Open Space Benefits in the City of El Paso

El Paso’s abundant natural capital is a critical part of the regional ecosystem and the economy. The shrublands surrounding the Franklin Mountains support rich biodiversity, capture water for the Hueco Bolson aquifer, and provide many other benefits directly to local residents, including increased property values and improved health via recreation. This first-ever ecosystem services valuation of El Paso’s natural capital finds that El Paso’s shrubland contributes $3.4 million to $6.7 million in ecosystem service benefits each year. When viewed as a natural capital asset that provides a flow of benefits over time, El Paso’s natural capital has an asset value between $107 million and $211 million over a 100-year lifespan and at a three percent discount rate. With sufficient stewardship to maintain the health and function of El Paso’s natural capital, this economic contribution will continue in perpetuity.

The Value of Ecosystem Services in Lower Sabino Creek

The Value of Ecosystem Services in Lower Sabino Creek

This study presents a first-ever ecosystem services valuation of the ecosystem services provided by Tucson, Arizona’s lower Sabino Creek. This analysis finds that lower Sabino Creek provides the local economy with $1.4 million to $2.1 million in ecosystem service benefits each year. When measured like an asset with a life-span of 100 years with a three percent discount rate, lower Sabino Creek has a net asset value between $46 million and $81 million. With sufficient stewardship to maintain the health and function of Sabino Creek, this economic contribution will continue in perpetuity.

The Economic Value of the Lake Winona and Maumelle Watersheds

The Economic Value of the Lake Winona and Maumelle Watersheds

This report presents a discussion of the source water watersheds for Little Rock, Arkansas, and its environs: Lake Winona and Lake Maumelle Watersheds. This report includes a description of each watershed’s current health, threats to water quality, and the ecosystem services benefits that the watersheds provide. In addition, we provide estimates for the economic value of these natural capital assets. By shedding light on the importance of these watersheds to the economic health of the region, these estimates provide the foundation for better-informed decisions regarding watershed management activities. 

Updated Factsheet: Communicating and Investing in Natural Capital Using Water Rates

Updated Factsheet: Communicating and Investing in Natural Capital Using Water Rates

Water utilities depend on natural capital such as watersheds, forests, and river systems as a vital component of their drinking water infrastructure. A growing number of utilities have begun to include natural capital surcharges in their rates structures. This factsheet outlines examples that show how natural capital surcharges provide utilities with a useful communication and investment tool. This document updates the original factsheet, "Communicating and Investing in Natural Capital Using Water Rates, 2012". 

Making the Business Case for a National Park Expansion

Making the Business Case for a National Park Expansion

In 2002, National Park officials proposed an expansion to Mt. Rainier National Park along the Carbon River entrance.  Spurred by increasing concerns over habitat degradation and loss, the fragmentation of open spaces, growing numbers of endangered or threatened species, and overall diminishing ecosystem health, the proposal sought to protect and preserve valuable forest and riparian habitat, particularly in light of projections for population growth. 

Along with park expansion, part of the conservation project involved advocating for the extension of the non-motorized bike and walking Foothills Rails-to-Trails path so that it would run from the Puget Sound to Mount Rainier National Park. This extension will provide a low-impact alternative for traveling to the Park and will promote conservation efforts by limiting impact to riparian buffers.

Building consensus for a major land acquisition, however, was not a simple task. A group of dedicated, concerned citizens took the lead in pushing for expansion. Earth Economics, known at the time as APEX, stepped in to facilitate stakeholder collaboration, help organize the vision, and support the proposed expansion. A consortium of conservation groups joined the effort, and stakeholders met monthly to strategize and conduct outreach for the proposed expansion. The group also worked with the National Parks Service, Pierce County Council, and five gateway communities -  Wilkeson, Carbonado, Upper Fairfax, Burnett, and South Prairie – to garner support for the expansion by illuminating how it would support economic development.

In November 2002, an 800-acre increase was approved by the House of Representatives.  By 2004, Congress had passed legislation that approved the increase and included plans for a new campground, new trail access points, reduced maintenance costs, and measures to mitigate flood impacts. Along with the expansion, a 1,040-acre parcel of the adjacent Fairfax Forest was zoned for preservation status, providing yet another protective buffer zone for the area. 

In all, the Carbon River Conservation Project significantly influenced the park expansion and preservation efforts, ultimately leading to the largest Mt. Rainier National Park expansion in 70 years.[i] Although work remains to be done (the Rails-to-Trails efforts are still underway), this groundbreaking collaboration of citizens and supporting groups laid the foundation for further land preservation to promote healthy habitat and ecosystem services throughout the Carbon River Valley watershed. 

 National and Regional Economic Analysis of the Four Lower Snake River Dams

National and Regional Economic Analysis of the Four Lower Snake River Dams

This benefit-cost analysis investigated Southeast Washington's Lower Snake River dams, modeling the regional economic benefits in the form of outdoor recreation expenditures that are expected to accompany a free-flowing river. The dams yield a benefit-cost ration of only 0.15, but a free-flowing Lower Snake River may yield a ratio of over 4.3. In a dam breach scenario, outdoor recreation could generate as much as $500 million in consumer expenditures in the first few years alone.

A Model for Measuring the Benefits of State Parks for the Washington State Parks and Recreation Commission

A Model for Measuring the Benefits of State Parks for the Washington State Parks and Recreation Commission

Few public land managers use strategic tools to plan investments and ensure optimal decisions. Washington State Parks, recognizing the power of being strategic rather than opportunistic in decision making, engaged Earth Economics to create a tool that quantifies the social, environmental, and economic benefits of each state park in Washington State. The tool also lays a foundation for predicting hot spots for future acquisitions.

 Economic Benefits of Trails, Parks, and Open Space in the Mat-Su Borough

Economic Benefits of Trails, Parks, and Open Space in the Mat-Su Borough

Community assets such as trails, parks and public open space provide numerous economic and social benefits, from improved health and reduced medical expenses to purchases at local businesses and job creation. Without access to trails, parks and open space, these benefits would be greatly diminished. This report summarizes the return on investment for community assets in the Matanuska-Susitna (Mat-Su) Basin of south-central Alaska, including social (recreation, tourism, human health, public safety, subsistence, culture, and history) and economic (business, tax revenues, taxpayer savings) benefits.

Nature's Value in the Térraba-Sierpe National Wetlands

Nature's Value in the Térraba-Sierpe National Wetlands

 

VALUING THE LARGEST MANGROVE FOREST IN CENTRAL AMERICA

Located on Costa Rica’s Osa Peninsula, the Térraba-Sierpe National Wetlands is the largest mangrove wetlands in Central America.  This reserve area is also a Ramsar site, a designation that recognizes the international importance of a wetlands area and signifies commitment to ensuring the ecological character of a wetlands (see the Ramsar Convention for more information). The Térraba-Sierpe encompasses diverse natural landscapes - estuaries, lagoons, beaches, cliffs, and mangrove forests. Mangroves in particular provide a valuable suite of critical ecosystem services that includes storm surge protection, healthy fisheries, and carbon sequestration.

Our world’s most important ecosystems are under increasing pressure from climate change and threats from development and other human influences, and the Térraba-Sierpe mangroves are no exception. For some time, there has been a growing interest in developing near the mangroves.  Talk of constructing an international airport, rapidly encroaching real estate development, and a proposed hydroelectric station and dam that would obstruct flow to the wetlands were only a few of the concerns in 2010.[1]  

In response to these growing concerns, Earth Economics contributed to a project in partnership with the University of Vermont, conducting a valuation of the ecosystem services of mangroves within the wetlands. The project resulted in the most comprehensive database of habitat, water quality, and fisheries for the area to date[2], and the analysis found that the Térraba-Sierpe National Wetlands provides a stunning annual value between $302 million and $1.9 billion. The value of the reserve comes from a broad list of ecosystem goods and services that includes storm protection, natural drought mitigation, nutrient flows, biodiversity, mussel habitat, and aesthetic value, among others. The vast majority of these valuable services are public, benefitting all.

The values identified in the study provided a powerful argument for wetland protection, and one that was used to achieve a key success: the development and adoption of a management plan for the Térraba-Sierpe wetlands. The ecosystem services framework identified in the analysis was presented to local communities in Puntarenas in close partnership with one of Costa Rica’s oldest NGOs, Fundación Neotrópica. Gaining local buy-in was crucial to the ultimate result: the adoption of the Humedal Nacional Térraba-Sierpe management plan, a legally binding document that is an anchor for the community in land-use decisions.  The management plan is the first ever for the region – a landmark change for a crucial natural reserve.


Kocian, M., et al. 2010. Nature’s Value in the T.rraba‐Sierpe National Wetlands: The Essential Economics of Ecosystem Services. Earth Economics, Tacoma, WA.

This study was conducted under a contract with the University of Vermont with support from a Bluemoon Grant.

Key Words: Ecosystem Service Valuation, Habitat, Mangrove, Wetland, Natural Reserve, Térraba-Sierpe

Reference [1, 2]