Reasons to Conserve Nature

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Reasons to Conserve Nature Richard G. Pearson  Trends in Ecology & Evolution  Volume 31, Issue 5, Pages 366-371 (May 2016) DOI: 10.1016/j.tree.2016.02.005 Copyright © 2016 The Author Terms and Conditions

Figure 1 Example Reasons for Conserving Nature Divided along Axes Defined by the Biological Level of Organization and Spatial Extent. The reasons included are examples to illustrate how this conceptual space can help harmonize different aspects of the relationship between people and nature. For example, endangered species conservation, pertaining to the value of maintaining the existence of species threatened with extinction, makes sense only at the species level and at a global extent. By contrast, most of the ecosystem services used by humans – such as water purification and pollination – rely on genetic, population, and ecosystem levels of biological organization at regional and local extents where the benefits are gained. Some reasons span multiple levels of biological organization or spatial extents (illustrated by the arrows); for example, species and ecosystems might be judged to have aesthetic value [21], and climate regulation is a global phenomenon but local climate can be affected by the biosphere [23]. Different conservation management practices, including regulation and monetary valuation, are most appropriate for different parts of the conceptual space. For example, the local benefits of healthy ecosystems for providing clean water and recreation might be amenable to monetary valuation, whereas the protection of globally endangered species requires enforceable international regulation. Photographs (left to right) from Wikimedia Commons: Zephyris (Richard Wheeler), Waugsberg, J. Patrick Fischer, Guy Francis. Trends in Ecology & Evolution 2016 31, 366-371DOI: (10.1016/j.tree.2016.02.005) Copyright © 2016 The Author Terms and Conditions