Defining an Ecosystem

An ecosystem, as a unit of study, must be a bounded system, yet the scale can range from a puddle, to a lake, to a watershed, to a biome. Indeed, ecosystem scale is defined more by the functioning ofthe system than by any checklist of constituent parts, and the scale of analysis should be determined by the problem being addressed. Whereas individuals perish over time and even populations cannot survive indefinitely - none can fix their own energy and process their own wastes - every ecosystem contains the ecological community necessary for sustaining life: primary producers, consumers, and decomposers, and the physical environment for oikos (Figure 1 shows a simple ecosystem model). It is this feature of ecosystems, that they are the basic unit for sustaining life over the long-term, which provides one of the main reasons for studying them for environmental management and conservation. The two main features of the ecosystem, energy flow and nutrient biogeochemical cycling, comprise the major areas of ecosystem ecology research.

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Worm Farming

Worm Farming

Do You Want To Learn More About Green Living That Can Save You Money? Discover How To Create A Worm Farm From Scratch! Recycling has caught on with a more people as the years go by. Well, now theres another way to recycle that may seem unconventional at first, but it can save you money down the road.

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