Environmental Systems

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Presentation transcript:

Environmental Systems Interrelationships among climate, geology, soil, vegetation, and animals.

All the parts are linked together and affect each other. A System: Is an organized collection of interdependent components that are connected through the transfer of energy and/or matter. All the parts are linked together and affect each other.

The whole (system) is greater than the sum of the parts. A system has properties and functions NOT present in the individual components. The whole (system) is greater than the sum of the parts. Properties of the whole (system) CANNOT be predicted with the study of the parts.

Systems are defined by the source and ultimate destination of their matter and/or energy. 1. OPEN SYSTEM: a system in which both matter and energy are exchanged across boundaries of the system.

2. CLOSED SYSTEM: a system in which energy is exchanged across boundaries of the system, but matter is not.

Most natural living systems are OPEN systems. 3. ISOLATED SYSTEM: a system in which neither energy nor matter is exchanged across boundaries of the system. NO SUCH SYSTEM EXISTS!!! Most natural living systems are OPEN systems.

Two basic processes must occur in an ecosystem: A cycling of chemical elements. Flow of energy. TRANSFERS: normally flow through a system and involve a change in location. TRANSFORMATIONS: lead to an interaction within a system in the formation of a new end product, or involve a change of state.

Components of a system: Inputs such as energy or matter. Human Body Calories Protein

2. Flows of matter or energy within the systems at certain rates. Human Metabolism Calories Protein

3.Outputs of certain forms of matter or energy that flow out of the system into sinks in the environment. Human Metabolism Calories Protein WasteHeat WasteMatter

4. Storage areas in which energy or matter can accumulate for various lengths of time before being released. Human Metabolism Calories Protein fat insulation muscle fiber hair, nails enzymes

PHOTOSYNTHESIS RESPIRATION energy input from sun PHOTOSYNTHESIS (plants, other producers) nutrient cycling RESPIRATION (hetero & autos, decomposers) energy output (mainly heat)

SUSTAINABILITY is the extent to which a given interaction with the environment exploits and utilizes the natural income without causing long-term deterioration to the natural capital.