Part of the problem with "the idea of conservation" is that we humans may have begun to realize too late that in order for this planet, and us, to survive, we must conserve, and preserve, much more of the native habitat of the entire world, than we ever realized - until just the last century, after much of the important and needed habitat has already been destroyed - by us. We need to look at not only saving a particular wildlife or plant species, but saving the surrounding habitat and other species that are all dependent on each other for survival and reproduction.
What is an Ecosystem?
In recent years conservationists have begun to realize that in order to properly maintain and manage wildlife habitat, they need to look beyond just the immediate area or species of concern, to a much broader area, in which the microbes, animals, plants, and geology of the habitat interact as an entire system, that interacts within itself.
The Glossary of Forestry Terms for the Province of British Columbia defines an ecosystem as "a functional unit consisting of all the living organisms (plants, animals, and microbes) in a given area, and all the non-living physical and chemical factors of their environment, linked together through nutrient cycling and energy flow. An ecosystem can be of any size-a log, pond, field, forest, or the earth's biosphere - but it always functions as a whole unit"
Most Americans are familiar with the term "Yellowstone Ecosystem" which the US Government uses to define the interaction of microbes, plants and animals of the area surrounding Yellowstone Park. This area encompasses not only the caldera or crater of the Yellowstone volcano, but also stretches of the Bechler, Fall, Firehole, Gallatin, Gardiner, Gibbon, Lamar, Lewis, and Yellowstone rivers. One of the original descriptions of the "ecosystem" of Yellowstone took into account the range of the endangered grizzly bear. The Yellowstone Ecosystem was later defined as the range of the cutthroat trout in the area, and later still to the range of the antelope, bison, elk, whitebark pine and other species - until the ecosystem has grown to what it is today, a large part of northwestern Wyoming, and smaller parts of southern Montana and eastern Idaho.
One definition of ecosystem management was expressed by J. Stan Rowe in 1992. "Ecosystem management is the application of the ecosystem approach in the conservation, management, and restoration of regional and local landscape ecosystems. It means that everyone attends to the conservation and sustainability of ecosystems, instead of sharply focusing on the productivity of individual or competing resources -- which has been our traditional mode of operation." An ecosystem can be as small as a backyard or small watershed, or as large as the planet earth.
What is Eco System Management?
Ecosystem management can be defined as the integration of ecological, social, and economic objectives for natural resource planning and management. The key to this "definition" lies in defining the objectives that are being integrated into the management plan. The ecological objectives of ecosystem management should address the conservation, preservation, maintenance and/or enhancement of biological diversity and ecosystem integrity; as a whole