1 Energy Flow in an Ecosystem copyright cmassengale

1 Energy Flow in an Ecosystem copyright cmassengale

2 Energy Flow Energy in an ecosystem originally comes from the sun Energy flows through Ecosystems from producers to consumers Producers (make food) Consumers (use food by eating producers or other consumers) copyright cmassengale

3 Producers Sunlight is the main source of energy for most life on earth. Producers contain chlorophyll & can use energy directly from the sun copyright cmassengale

4 Autotrophs An Autotroph is any organism that can produce its own food supply! Autotrophs are also called Producers Plants, algae, some protists, & some bacteria are examples copyright cmassengale

5 Niche of a Producer Captures energy and transforms it into organic, stored energy for the use of living organisms. May be photoautotrophs using light energy (e.g. plants) May be chemoautotrophs using chemical energy (e.g. cyanobacteria) copyright cmassengale

6 Photoautotroph Producer That Captures Energy from the sun by: Photosynthesis Adds Oxygen to the atmosphere Removes Carbon Dioxide from the Atmosphere Algae copyright cmassengale

7 On Land Plants In The Sea Algae Tidal Flats & Salt Marshes Cyanobacteria Habitat of Photoautotrophs copyright cmassengale

8 Chemoautotrophs Capture energy from the bonds of inorganic molecules such as Hydrogen Sulfide Process is called Chemosynthesis Often occurs in deep sea vents or gut of animals Called a Black smoker (thermal vent) copyright cmassengale

9 Tube Worms living in Black Smoker copyright cmassengale

10 Consumers Heterotrophs eat other organisms to obtain energy. (e.g. animals) Herbivores Eat Only Plants Carnivores Eat Only Other Animals copyright cmassengale

11 Consumers Heterotrophs eat other organisms to obtain energy. Omnivores (Humans) Eat Plants & Animals Detritivores (Scavengers) Feed On Dead Plant & Animal Remains (buzzards) Decomposers Fungi & Bacteria copyright cmassengale

12 Feeding Relationships Energy flows through an ecosystem in one direction from producers to various levels of consumers copyright cmassengale

13 Feeding Relationships Food Chain Simple Energy path through an ecosystem Food Web More realistic path through an ecosystem made of many food chains copyright cmassengale

14 Food Chain Producer (trapped sunlight & stored food) 1st order Consumer 2nd Order Consumer 3rd Order consumer 4th Order Consumer copyright cmassengale

15 Name the Producer, Consumers & Decomposers in this food chain: copyright cmassengale

16 copyright cmassengale

17 Food Web copyright cmassengale

18 copyright cmassengale

19 Trophic Levels Each Level In A Food Chain or Food Web is a Trophic Level. Producers Always The First Trophic Level How Energy Enters The System Herbivores Second Trophic Level copyright cmassengale

20 Trophic Levels Carnivores/Omnivores Make Up The Remaining Trophic Levels Each level depends on the one below it for energy. copyright cmassengale

21 Ecological Pyramids Graphic Representations Of The Relative Amounts of Energy or Matter At Each Trophic Level May be: Energy Pyramid Biomass Pyramid Pyramid of Numbers copyright cmassengale

22 Energy Pyramid copyright cmassengale

23 Biomass Pyramid copyright cmassengale

24 Pyramid of Numbers copyright cmassengale

25 copyright cmassengale