Ch 52 EcologyPart1 - Ecology & Biosphere Chapter 52 Fig....

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Chapter 52 Ecology & Biosphere
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Fig. 52-2 Organismal ecology Population ecology Community ecology Ecosystem ecology Landscape ecology Global ecology Studies in Ecology
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The Biosphere
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Ecology = the study of the interaction of organisms with their environments.
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The word " ecology " coined from Greek word " oikos ", which means " house " or "place to live”.
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It involves understanding biotic and abiotic factors influencing the distribution and abundance of living things.
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Biotic Factors Competitors Disease Predators Food availability Habitat availability Symbiotic relationships Abiotic Factors pH Temperature Weather conditions Water availability Chemical composition of environment nitrates, phosphates, ammonia, O 2 , pollution
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population growth competition between species symbiotic relationships trophic (=feeding) relationships origin of biological diversity interaction with the physical environment
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The entire proportion of the earth that is inhabited by life. Includes communities and ecosystems. The Biosphere
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What are Biomes? Biomes are regions in the world that share similar plant structures, plant spacing, animals, climate and weather.
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How are Biomes Classified? Terrestrial or aquatic.
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Climate - long term weather patterns Weather - momentary conditions of the atmosphere; created I. Climate Temperature Precipitation - major factors that determine an areas climate. Humidity - the amount of water vapor air holds, which is dependent upon temperature.
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Fig. 52-10c March equinox 60ºN 30ºN 0º (equator) 30ºS June solstice Constant tilt of 23.5º September equinox December solstice
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Fig. 52-10b Low angle of incoming sunlight Sun directly overhead at equinoxes Low angle of incoming sunlight Atmosphere 90ºS (South Pole) 60ºS 30ºS 23.5ºS (Tropic of Capricorn) 0º (equator) 30ºN 60ºN 23.5ºN (Tropic of Cancer) 90ºN (North Pole) Climate
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Convection cell model Non-rotating Earth
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unequal heating and cooling of the Earth
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This note was uploaded on 04/20/2011 for the course BIOL 172 taught by Professor Huddleston,m during the Spring '08 term at University of Hawaii, Manoa.

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Ch 52 EcologyPart1 - Ecology & Biosphere Chapter 52 Fig....

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