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L9+Life+supporting+systems-Species

L9+Life+supporting+systems-Species - BISC 003 Environmental...

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BISC 003 Environmental Science: Life Supporting Systems square6 Life supporting systems square6 Biological concepts: individual species, population, community, ecosystem… square6 Ecological concepts: carrying capacity, trophic levels, biomass pyramid, food web, food chain…. square6 Biogeochemical cycles square6 Carbon cycle square6 Nitrogen cycle square6 Phosphorus cycle square6 Water cycle square6 Sulfur cycle
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square6 Lecture Outline: square6 General Concepts square6 Basic Characteristics of Life BISC 003 Environmental Science: Life Supporting Systems square6 Evolution of life square6 Natural Selection and Adaptation square6 Speciation square6 Species Interactions
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Major parts of earth’s life- support system square6 Atmosphere: air square6 Biosphere: living and dead organisms square6 Hydrosphere: water square6 Lithosphere: crust, top of upper mantle (soil, minerals, other natural resources)
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Sunlight square6 Sun is a fiery ball of exploding hydrogen gas. square6 Radiant energy classified by wavelengths. square6 Lower energy has longer wavelengths , square6 Intense energy has short wavelengths.
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Sunlight square6 Solar energy that reaches the earth’s surface is in, or near, the visible light wavelengths. square6 Drive photosynthesis. square6 More than half of the incoming sunlight may be reflected or absorbed by atmospheric clouds, dust, or gases. square6 Short wavelengths are filtered out by gases in the upper atmosphere.
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Water quality square6 Weight of living organisms 60-70% water. square6 Universal solvent square6 Dissolved salt solutions conduct electricity. square6 Cohesive, producing capillary action. square6 Exist as liquid over a wide temperature range. square6 Expands when crystallizes. square6 High heat of vaporization. square6 High specific heat.
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Concepts and connections square6 Organisms/populations/communities square6 Organism: any form of life square6 Population: group of individual organisms of the same species living within a particular area square6 Community: populations of all species living and interacting in an area at a particular time square6 Ecosystem: Community of different species interacting with one another and with the chemical and physical factors making up its nonliving environment.
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Levels of organization of matter
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Organisms/populations/community
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