Organisms%2c matter%2c and energy - Organisms,matter,...

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Organisms, matter,  and energy
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What we will cover organisms in their environment environmental factors matter and energy elemental cycling
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Ecosystems: A Description Species:  different kinds of plants, animals, and microbes  in the community Populations:  number of individuals that make up the  interbreeding, reproducing group Biotic communities:  grouping or assemblage of plants,  animals, and microbes Associations:  how a biotic community fits into the  landscape
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Ecosystem definition a grouping of plants, animals, and microbes (all biotic  organisms) occupying an explicit unit of space and  interacting with each other and their environment (abiotic  factors) ecotone: often boundaries not clear, transitional areas are  ecotones (often considered their own ecosystem)
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Ecotones
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Environmental factors conditions are factors that vary in space and time, but are  not used up temperature, wind, fire, elevation resources are factors that are consumed by organisms – water, nutrients, light, CO 2   different species thrive under different environmental  regimes
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Survival Curve
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Law of Limiting Factors any one factor outside the optimal range will cause stress  and limit growth from Justus von Liebig (1840) who studied nutrients and  plant growth
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occupies space and has mass basic building blocks are atoms atoms are conserved in any reaction - law of conservation of  matter key elements: C H O N P S
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This note was uploaded on 10/28/2011 for the course NRES 102 taught by Professor David during the Fall '11 term at University of Illinois at Urbana–Champaign.

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Organisms%2c matter%2c and energy - Organisms,matter,...

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