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Chapter 3 The Biosphere. Section 3 – 2 Energy Flow. Energy Flow. Energy flows through Ecosystems. Energy In: . Consumers Convert to Heat. Producers Convert to Carbohydrates. Producers - Photoautotrophs. Key Concept: Sunlight is the main source of energy for most life on earth.

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Chapter 3 The Biosphere


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chapter 3 the biosphere

Chapter 3 The Biosphere

Section 3 – 2

Energy Flow

energy flow
Energy Flow

Energy flows through Ecosystems

Energy In:

ConsumersConvert to Heat

Producers Convert to Carbohydrates

producers photoautotrophs
Producers - Photoautotrophs

Key Concept:

  • Sunlight is the main source of energy for most life on earth.
producers chemoautotrophs
Producers - Chemoautotrophs

Key Concept:

  • Some organisms rely on energy stored in inorganic chemical compounds
autotrophs
Autotrophs

An Autotroph Is Any Organism That Can Produce Its Own Food Supply!

autotrophs producer
Autotrophs = Producer

AKA

Also Known As

PRODUCER

captures energy and transforms it into organic, stored energy for the use of living organisms.

photoautotroph
Photoautotroph

Producer That Captures Energy from the sun by:

  • Photosynthesis
    • Adds Oxygen to the atmosphere
    • Removes Carbon Dioxide from the Atmosphere
photoautotroph8
Photoautotroph
  • On Land
    • Plants
  • In The Sea
    • Algae
  • Tidal Flats & Salt Marshes
    • Cyanobacteria
chemoautotroph
Chemoautotroph
  • Capture energy from the bonds of inorganic molecules
    • Hydrogen Sulfide
    • The Process Is Called: Chemosynthesis
autotrophs11
Autotrophs

Know the difference between

Photosynthesis

&

Chemosynthesis

consumers
Consumers

THAT’S

YOU

consumers13
Consumers

You are a

HETEROTROPH

consumers14
Consumers

Heterotrophs eat other organisms to obtain energy.

  • Herbivores
    • Eat Only Plants
  • Carnivores
    • Eat Only Other Animals
consumers15
Consumers

Heterotrophs eat other organisms to obtain energy.

  • Omnivores(That’s You)
    • Eat Plants & Animals
  • Detritivores
    • Feed On Dead Plant & Animal Remains
  • Decomposers
    • Fungi & Bacteria
feeding relationships
Feeding Relationships

Key Concept:

Energy flows through an ecosystem in one direction

from producers to various levels of consumers

feeding relationships17
Feeding Relationships
  • Food Chain
    • Simple Energy path through an ecosystem
    • Pg. 69
  • Food Web
    • More realistic path through an ecosystem
trophic levels
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
trophic levels21
Trophic Levels

Each Level In A Food Chain or Food Web is a Trophic Level.

  • Carnivores/Omnivores
    • Make Up The Remaining Trophic Levels

Each level depends on the one below it for energy.

ecological pyramids
Ecological Pyramids

Graphic Representations Of The Relative Amounts of Energy or Matter At Each Trophic Level

Energy Pyramid

Biomass Pyramid

Pyramid of Numbers