Biological species are essential for the provision of ecosystem services ranging from food production (including direct food provision and the underpinning functions of pollination, pest control and ...

Forest ecosystems are defined by a "salient" or common set of characteristics that make the forest ecology of a particular area unique. These very complex sets of forest conditions are studied by ...

Visit NAP.edu/10766 to get more information about this book, to buy it in print, or to download it as a free PDF. Ecosystems are composed of the plants, animals, people, and other living things that ...

A food web is a detailed interconnecting diagram that shows the overall food relationships between organisms in a particular environment. The simplest explanation is that food webs are "who eats whom" ...