Global Biodiversity Outlook 2
Published by: Secretariat of the Convention on Biological Diversity, UNEP
Publication date: 2006
ISBN: 92-9225-040-X
81 pp
Available as a 8Mb PDF download from:
http://www.biodiv.org/gbo2/default.shtml
Loss of biodiversity will have a major impact on the environment throughout the 21st Century. This short volume is a welcome addition to the literature, because it shows that we are falling well short of the responsible stewardship of the environment that is essential for our continued long-term tenure of this planet.
In 2002, the Parties to the ‘Convention on Biological Diversity’ adopted a strategic plan to achieve a significant reduction in the current rate of loss of biological diversity at the global, regional and national levels – as both a contribution to poverty alleviation and to benefit all life on Earth. This volume describes the essential role of biodiversity and the prospects, challenges and actions needed to achieve the 2010 Biodiversity Target. The study summarizes the work of over 1300 experts working in 95 countries. The major conclusion is that 15 out of the 24 ecosystem services assessed in this survey are currently in decline.
Of fundamental importance is the fact that humankind used only about one half the Earth’s biocapacity in 1961, but by 2001 this had increased to 1.2 times the planet’s capacity. This means that global demand for natural resources now exceeds (by more than 20%) the biological capacity of the Earth to renew these resources. This is clearly unsustainable, even in the short term.
In many cases, the value of ecosystems is not properly taken into consideration in assessing future developments. For example, the mangroves of Thailand offer substantial benefits to society but these are reduced to almost zero when the mangroves are converted to shrimp farms. In this case, private gain triumphs over public good. However, the world's ecosystem services actually contribute more to human welfare than global GDP. As a result, many investment decisions are flawed because conventional economics very much undervalues the contribution of the natural environment.
The main conclusion of this study is that unprecedented additional effort will be required to achieve a significant reduction in the rate of loss of biodiversity by 2010. This situation is hardly likely to improve after 2010. Unfortunately, the three main drivers of environment change (increases in world population, consumption and global climate change), “the triple whammy”, are all set to increase significantly throughout this century. Loss of biodiversity is just part of the price we have to pay for not paying attention to the fundamentals.
It has been said that the English countryside was at its most beautiful in late Victorian times, after one thousand years of gardening. Globally, we are no longer gardening the environment; we are mining it.
Geoffrey P Glasby
University of Göttingen