Download Niches and Competition

Symbiosis, Niches and
Competition
Interaction between members of
two different species that live
together in close association
3 Types of Symbiosis
Mutualism
both organisms benefit
Commensalism
one species benefits and
the other is neither harmed
nor helped
Parasitism
one species benefits and the
other is harmed
Which type of Symbiosis?
Which type of Symbiosis?
Brood Parasitism
Symbiosis Review
Niche
The special roles that organisms have in an
ecosystem.

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Physical, chemical and biological
interactions for a species to grow, survive
and reproduce
Specific to one species
Niche Examples
Niche of the Blue Heron




lives near water to fish
can nest close to water for
easy access to food and
escape from predators
Camouflaged nest in long
grass
long legs for deeper fishing
than other birds
Competition
Harmful interaction between two or more
organisms that can occur when organisms
are competing for the same resource

If a new species is introduced it can
compete for the same niche space that is
already occupied
Why might this be a bad thing?
Competition