Obama signs major land conservation law

President Obama signed a massive lands package into law today, protecting more than two million acres as wilderness and creating a new national system to conserve land held by the Bureau of Land Management.

The measure, a collection of 170 different bills that represents the most significant wilderness law in at least 15 years, would provide the highest level of federal protection to areas such as Oregon’s Mount Hood and part of Virginia’s Jefferson National Forest, along with other sites in California, Colorado, Idaho, Michigan, New Mexico, Utah and West Virginia. It also authorizes the first coordinated federal research program to investigate ocean acidification and additional funding to protect ecologically-valuable coastal areas and estuaries.

At the signing ceremony Obama said, “This legislation guarantees that we will not take our forests, rivers, oceans, national parks, monuments, and wilderness areas for granted, but rather we will set them aside and guard their sanctity for everyone to share. That’s something all Americans can support.”

The economic impact of ocean acidification on coral reefs

Because ocean acidification has only recently been recognised as a problem caused by climate change, impact studies are still rare and estimates of the economic impact are absent. This paper estimates the economic impact of ocean acidification on coral reefs which are generally considered to be economically as well as ecologically important ecosystems. First, we conduct an impact assessment in which atmospheric concentration of CO2 is linked to ocean acidity causing coral reef area loss. Next, a meta-analysis is applied to determine the economic value of coral reefs around the world. Finally, these two analyses are combined to estimate the economic impact of ocean acidification on coral reefs for the four IPCC marker scenarios. We find that the annual economic impact rapidly escalates over time, because the scenarios have rapid economic growth in the relevant countries and coral reefs are a luxury good. Nonetheless, the annual value in 2100 in still only a fraction of total income, one order of magnitude smaller than the previously estimated impact of climate change. Although the estimated impact is uncertain, the estimated confidence interval spans one order of magnitude only. Future research should seek to extend the estimates presented here to other impacts of ocean acidification and investigate the implications of our findings for climate policy.