Energy Flow in the Environment Sunlight is the main energy source for a life on earth Side note: In...
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Energy Flow in the Environment Sunlight is the main energy source for a life on earth Side note: In a few ecosystems, some organisms obtain energy from inorganic chemicals. Where can we find examples of these ecosystems? Ocean Vents with no sunlight
Energy Flow in the Environment Sunlight is the main energy source for a life on earth Side note: In a few ecosystems, some organisms obtain energy from
Energy Flow in the Environment Sunlight is the main energy
source for a life on earth Side note: In a few ecosystems, some
organisms obtain energy from inorganic chemicals. Where can we find
examples of these ecosystems? Ocean Vents with no sunlight
Slide 3
Two Different Types of Nutrition Autotroph (self nutrition) An
organism capable of synthesizing its own food from inorganic
substances, using light or chemical energy.
Slide 4
Autotrophs Organisms that make their own food Examples: Plants,
Algae & some bacteria (Cyanobacteria aka: blue-green algae)
blue-green algaeblue-green algae They are also know as producers
They begin all food chains and are essential for the flow of energy
through the environment
Slide 5
Energy is used to Synthesize Molecules Photosynthesis-
harnessing solar energy to produce food. Chemosynthesis- use
chemical energy to produce food
Slide 6
Slide 7
Chemosynthesis Bacteria live in the mussel and make excess
food, which the mussel uses for respiration.
Slide 8
Blue-Green Algae Return
Slide 9
Heterotroph Organism that rely on other organisms for their
energy Also called consumers Also called consumers because they
must eat
Slide 10
Types of Consumers Herbivores Obtain energy by eating only
plants Also called Primary Consumers; they are the first to
eat.
Slide 11
Carnivores Feed on other animals Scavenger Feeds off pre-
killed animals Predator- Hunts and kills prey
Slide 12
Carnivores cont. Parasite- Feed off of a living organism.
(host) Omnivore- Eat both plant and animal
Slide 13
Decomposers Break down organic matter by recycling nutrients
back to soil and air Bacteria, Fungus
Slide 14
Energy Flow Energy flows through the environment in one
direction, through a series of steps. Sun autotrophs
heterotrophsdecomposers Arrows show direction of energy
movement
Slide 15
Energy Flow-2 Energy flow can be represented in three different
ways F F F Food chains F F F Food webs E E E Ecological
pyramids
Slide 16
Food Chain Shows the transfer of energy though an ecosystem.
Autotroph Producer Plant Clover Heterotroph Herbivore 1 0 Consumer
Animal Deer Heterotroph Carnivore 2 0 Consumer Animal Wolf
Slide 17
Food Chain Shark Squid Small fish Zooplankton Algae 100 cal./g
10 cal./g 1 cal./g 0.1 cal./g 1000 cal/unit Only about 10% of the
energy is able to move. The rest is used for life and lost as heat
to the environment
Slide 18
Food Web
Slide 19
Food Pyramid 50 kg of human tissue 500 kg of chickens 5000 kg
of Grain Notice that the amount of matter decreases. As you move
up