Content Standard 4.2
Organisms cooperate and
compete in ecosystems
Ecosystems include
all the interacting
parts of the
environment
in an area.
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Interactions in ecosystems - 5 min
A niche is the
sum total of an
organism's use
of biotic and
abiotic resources in the
environment, how it
"fits into" an ecosystem.
A number of
different animals
can live in the
same biome
because each occupies
its own special space,
or niche.
Species cannot coexist
in a community if their
niches are identical.
After years of searching
Walter finally found his niche.
Habitat
The physical area in
which an organism lives.
Niche
The way of life
of an organism.
Prey
Predator
Predator's predator
Prey
Predator
Predator's predator
Refers to the relationship
between a predator and prey.
Prey
Predator
Predator's predator
In other words, one organism
using another for food.
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Predation - 9 min
Carnivores
eat only meat
Omnivores
eat plants
and meat
Herbivores
eat only
plants
Food Chain:
The specific sequence in
which organisms obtain
energy within an ecosystem.
Primary Consumers
Also called herbivores,
eat only plants.
Secondary Consumers
Also called carnivores,
eat only animals.
Tertiary Consumers
eat secondary
consumers.
Interrelated food chains
within an ecosystem.
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Why don't
humans
eat
carnivores?
Kingfisher
Trout
Insect Larvae
Algae
Indicates the
trophic levels
within an
ecosystem
Kingfisher
Trout
Insect Larvae
Algae
Trophic is a
word associated
with energy.
Kingfisher
Trout
Insect Larvae
Algae
Kingfisher
Trout
Insect Larvae
Algae
All producers are
able to make their
own food through
photosynthesis.
Kingfisher
Trout
Insect Larvae
Algae
Food stored by
producers is ALL
the food energy
available in the
food chain.
Kingfisher
Trout
Insect Larvae
Algae
Kingfisher
Trout
Insect Larvae
Algae
Primary consumers
feed on producers.
Kingfisher
Trout
Insect Larvae
Algae
Primary consumers
use 90% of their food
energy to stay alive.
Kingfisher
Trout
Insect Larvae
Algae
Kingfisher
Trout
Insect Larvae
Algae
Secondary consumers
feed on primary consumers
Kingfisher
Trout
Insect Larvae
Algae
Kingfisher
Trout
Insect Larvae
Algae
Kingfisher
Only 10% of the
energy in one trophic
level is available as
food for the next
higher level.
Trout
Insect Larvae
Algae
ALL food chains, food
webs, and food pyramids
begin with producers.
Algae
A normal food pyramid
looks like this.
Give me an example of how the
pyramid could look like this.
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Allows an
organism to
blend with the
environment.
A prey animal
looks like a
dangerous,
or bad tasting,
animal.
Which one is poisonous?
Scarlet
Kingsnake
Coral
Snake
Red on black is friend of Jack. Red on yellow will kill a fellow.
Symbiosis is a close
association between
two dissimilar organisms.
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Symbiosis - 7 min
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One organism benefits (parasite),
the other is harmed (host).
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One organism benefits, the other
neither benefits or is harmed.
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Both organisms benefit equally.
Mutualism
is common in nature.
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