BioEd Online Interdependence of Life: Ecosystems By Deanne Erdmann, MS BioEd Online.

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Presentation transcript:

BioEd Online Interdependence of Life: Ecosystems By Deanne Erdmann, MS BioEd Online

BioEd Online Ecological Terminology Environment Ecology Biotic vs. Abiotic Population Community Ecosystem Biosphere BioEd Online

BioEd Online Ecosystems All members of a community, along with their physical and chemical environments Vary greatly in size Diversity promotes stability and productivity Dynamic energy flow chemical cycling Change over time (succession) Coral Reefs are a rich, diverse and productive ecosystems A coastal wetland on Lake Superior, Wisconsin. BioEd Online

BioEd Online Biomes Tropical Rainforests Savannas Deserts Temperate Grasslands Temperate Deciduous Forests Coniferous Forests Arctic Tundra Grasslands in the Great Sand Dunes National Monument and Preserve Prairie Creek Redwoods Sate Park BioEd Online

BioEd Online Aquatic Ecosystems Freshwater Flowing Water Lakes Wetlands Estuaries Oceans Intertidal or littoral Coastal or neritic Coral Reefs Open Ocean Benthic Snake River with Grand Tetons in background Mountain Lake in Grand Teton National Park BioEd Online

BioEd Online Zonation in Lakes BioEd Online

BioEd Online Thermal Stratification in Lakes BioEd Online

BioEd Online Zonation in a Marine Environment BioEd Online

BioEd Online Primary Production The conversion of light energy to chemical energy is called “gross primary production.” (photosynthesis) Plants use the energy captured in photosynthesis for maintenance and growth. The energy that is accumulated in plant biomass is called “net primary production.” BioEd Online

BioEd Online Energy Flow in Ecosystems Producers (Autotrophs) and Consumers (Heterotrophs) Trophic Levels Ecological Pyramids of Energy Ecological Pyramids of Biomass Ecological Pyramids of Numbers BioEd Online

BioEd Online Ecological Pyramids of Energy BioEd Online

BioEd Online Ecological Pyramids of Biomass BioEd Online

BioEd Online Biogeochemical Cycles Cycling of materials between the environment and organisms Chemical and biological processes Examples Water cycle Nitrogen cycle Phosphorus cycle Carbon cycle Plants obtain nitrogen from nitrogen-fixing bacteria and pass it to other organisms through the food chain BioEd Online

BioEd Online Water Cycle BioEd Online

BioEd Online Nitrogen Cycle BioEd Online

BioEd Online Carbon Cycle BioEd Online

BioEd Online Biogeochemical Cycle Activity Pass out untitled diagrams of the water cycle, nitrogen cycle, and carbon cycle. Have students title each cycle and explain why they chose these titles. Provide a list of labeling terms and have students create labels for each stage or process on all three diagrams. Applications/suggestions Use as an introductory or post-discussion assessment. Laminate group sets and use erasable markers to save paper and prep time. BioEd Online