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Passing of Energy All Energy starts from the sunPhotosynthetic plants convert energy from the sun into food The energy moves through the ecosystem as one organism eats another
Autotrophs / ProducersAn organism that converts the sun’s energy (or inorganic substances) into food
Heterotrophs / ConsumersOrganisms that obtain energy by eating other organisms Can eat plants or animals
Food Chains A model of the flow of energy through organisms in a community Flow of energy is shown by arrows
Transferred Energy At each step in the food chain only 10% energy is passed to the organism 90% of the energy is lost in the form of HEAT 90% HEAT
Trophic Levels Each step in the transfer of energyProducers are 1st trophic level… they form the base of all food chains
Primary Consumers / HerbivoresFeed directly on producers Make up the 2nd trophic level
Secondary & Tertiary Consumers / CarnivoresEat only meat Feed on primary & secondary consumers Make up the 3rd and 4th trophic levels
Omnivores Eat both producers and consumers
Scavengers Consumer that feeds on the tissue of dead animals
Decomposers (recyclers)Feed on wastes and dead organic matter from all trophic levels
Ecological Pyramid Shows the relationship between producers & consumers in 3 ways: Biomass Energy # of organisms
Biomass Total mass of all organisms in a food chain or ecological community
Biomass Pyramid There is less biomass as you move up trophic levels
Energy Pyramid & 10% Law Only 10% of energy is passed to next level1st trophic level is important in determining the rest of the levels
# of organism pyramid Population of each trophic level decreases as you move up the trophic levels
Food Web Shows the interconnected food chains in a community or ecosystem A lot of food chains together
Energy Transfer in Ecosystem
Food Webs & Energy Pyramids
Food chains, food webs and the transfer of energy
Roles of Living Things Chapter 4 Section 1. Organisms that make their own food from inorganic molecules and energy are called producers. –Plants are the.
Food Chains, Food Webs, and the Transfer of Energy
Ecology Standards 6a. Know biodiversity is the sum total of different kinds of organisms & is affected by alterations of habitats 6b. Know how to analyze.
How is energy transferred?
Chapter 37.1 and 37.2 – Ecology Dynamics The Flow of Energy Sun: ultimate source of energy The flow of energy is one way – from photosynthetic.
Part 1: Food Chains, Food Webs, and the Transfer of Energy
Energy Flow in the Biosphere,
ENERGY FLOW: Where does the Energy Go? (fig 34.2, 34.3)
Energy Flow In An Ecosystem Unit 11 - Ecology. Producers The most important part of an ecosystem Without a constant energy source, living things cannot.
Energy Flows Through Ecosystems Sun: Makes all energy on Earth. Producers: Make their own food. Consumers: Get their food by eating other organisms. Decomposers:
the transfer of energy and matter in the form of food when one organism eats another organism.
Food Chains, Webs & Pyramids! 1) The Passage of Energy The Sun The source of energy for all life on the planet Producers (Autotroph) Use the sun’s energy.
Energy Flow Chapter 16 Food Chains, Food Webs, Energy Pyramids.
Define and give examples of the following:
Energy in Ecology How is energy transferred?. Energy All ecosystems must transfer energy. Energy flows in ONE DIRECTION Heat Energy (Sun) changes.
AIM: How does energy flow through an ecosystem? DN: What is a niche? Can two organisms occupy the same exact niche? Explain.
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