January 30, 2017
Monetary valuation of the environment is increasingly embedded in policy. Despite broad claims that valuation is policy-relevant, there is widespread frustration that it has not widely improved environmental outcomes, that it obscures many other types of values, and presents unintended consequences. We argue that this is, in part, because of a tendency to overlook the mechanics of how valuation tools and data are embedded into the institutions (regulations, norms, rules, schemes) that mediate decision-making.
January 27, 2017
Ecosystem recovery from anthropogenic disturbances, either without human intervention or assisted by ecological restoration, is increasingly occurring worldwide. As ecosystems progress through recovery, it is important to estimate any resulting deficit in biodiversity and functions. Here we use data from 3,035 sampling plots worldwide, to quantify the interim reduction of biodiversity and functions occurring during the recovery process (that is, the ‘recovery debt’). Compared with reference levels, recovering ecosystems run annual deficits of 46–51% for organism abundance, 27–33% for species diversity, 32–42% for carbon cycling and 31–41% for nitrogen cycling.
January 26, 2017
Global greenhouse gas emissions need to peak soon and be reduced practically to zero in the second half of this century in order to not exceed the climate targets adopted in the Paris Agreement. However, there are currently numerous coal-fired power stations around the world at different stages of construction and planning that could be completed in the next decade. If all these plants are actually built, their expected future emissions will make it very difficult to reach these targets, even in an optimistic scenario with the deployment of carbon capture and storage technologies. Policy makers around the world need to react quickly and help to redirect investment plans for new coal-fired power stations towards low-carbon technologies
January 19, 2017
"Ice-free summers in Arctic Ocean could thwart Paris Agreement objectives".
A new study shows the current trend of melting sea ice in the Arctic Ocean could put at risk the objectives of the Paris Agreement to address climate change.The study’s authors conclude that, due to the future increase in the sea ice-albedo feedback, global carbon dioxide emission levels would need to reach zero 5 to 15 years earlier than expected to meet targets set by the agreement, substantially increasing mitigation costs. They also show the target of limiting the increase in global temperatures to 1.5 degrees Celsius set by the Paris Agreement would be unachievable without negative carbon emissions.
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October 22, 2024 @ 4:30 pm - 5:00 pm
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