bioecology_1

bioecology_1 - Ecology Understand how living and non-living...

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Ecology
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Understand how living and non-living environments are interrelated
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Ecological Scale Population ecology Community ecology Ecosystem ecology Landscape ecology
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Abiotic Non-living Chemical and physical factors N2, O2, CO2, C Temperature Light Humidity Minerals Landscape
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Life depends on abiotic
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Chemical composition of human body
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N deficient
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2nd law of thermodynamics Energy cannot be created nor destroyed, converted Law of conservation of matter Matter cannot be created nor destroyed, just rearranged into different spatial patterns
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Life depends on abiotic
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Life depends on abiotic
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What are abiotic factors
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Temperature Biological processes Enzyme function Reproduction Digestion
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Water Osmolarity Ex. Fresh water fish in constant state of hypotonicity, water always rushing into its body Dessication In desert, movement onto land Ex amphibian needing moist environment
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Sunlight Base E source for all life Photosynthesis Competition Photoperiodism
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Wind Influence temperature Water Ability to function Growth Alpine Substrate
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Krumholtz
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Substrate Physical structure Mineral composition Stability Porosity
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Biotic Factors Competition Predation Resource distribution Disease Ex. Predator limiting distribution
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Population Ecology Group of organisms of one species in a given area Interactions w/ abiotic & biotic
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Population Group of individuals of a single species that simultaneously occupy the same general area Face similar environmental conditions Exhibit variation Evolutionary important unit Characterized by Density and dispersion (spacing) Population growth Population size regulation
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Density Number individuals per unit area/volume Dispersion Pattern of spacing among individuals w/in the geographic boundaries of the population Used to understand the physical structure of a population Patterns vary according to scale and animals interaction with environment
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bioecology_1 - Ecology Understand how living and non-living...

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