Category Archives: Millennium Ecosystem Assessment

State of the world’s ecosystems

The Millennium Ecosystem Assessment (MA) has started to release its reports. A statement from the review board and the main synthesis report have been released at a press conference and on the web.

The MA report shows that its undeniable that the human impact on the world’s ecosystems is large. For example, agriculture covers roughly 1/4 of the Earth’s land surface.

cultivated area of world
The extent of cultivated ecosystems across the globe.

There are a whack of news articles on the MA (e.g. BBC, Christian Science Monitor, SciDev.Net & Guardian)However, most of the focus is on the eco doom and gloom side of the reports (which is real) but is neglecting the more positive side of the report, which talks about what people can do and are doing to make things better. In particular how changes in ecological management can improve the economic productivity of ecosystems as well as the human well being of people who live in them. Also, I think, is the discussion of the strengths & weakenss of different approaches – and where and in what way technological and institutional changes appear to be most likely to be successful or unsuccessful is novel and useful. This issue is discussed further in a post on WorldChanging

For example, the MA scenarios present four different stories about the future. In several of the supply of many ecosystem services are improved (See figure blow).

Changes in Ecosystem services across MA Scenarios

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Telling Stories About the Future

Last week, on March 10th, I gave a lecture at McGill on the Millenium Ecosystem Assessment, about my assessment and my participation in it. Prior to my talk I was interviewed by the McGill Reporter, McGill’s offical newspaper, which published an article on my talk.

The storyline we choose has yet to be written, but Peterson hopes that it will reflect the lessons of the Millennium Assessment. “Ecological decisions have both local and global impact,” he cautioned. “And all scenarios have associated benefits and risks.” Scenarios that are based on a proactive strategy, such as the technological strategy, tended to do well under changing environmental conditions, while more reactive strategies, such as the one told by the “global orchestration strategy,” can do better, but only under stable conditions.

The work of the Millenium Ecosystem Assessment will start to be released on March 30th.