Download Habitat

Habitat
• Habitat is the
_______a plant
or animal ______
out there life.
copyright cmassengale
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Niche
• Niche- ______ of a species in its
habitat
– Like different baseball player positions
• A species' niche includes:
– a. ___________ - where it lives in the
ecosystem
– b. _______________ - all interactions
with other species in the ecosystem
– c. _____________- its method of
obtaining food.
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Two species can share the same
________but not the same ______
Example: Ants and bacteria both live in the dirt
(habitat) but have different niches.
Ants eat dead insects and
bacteria eat dead leaves,
dead logs, and
animal waste.
So ants and bacteria
don’t compete for
the same _________.
The Competitive
Exclusion Principle
says that…
No __ ______
can _______
the ________
________ at
the same time.
This would lead
to __________.
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Community Interactions
1. ____________
2. ____________
3. ____________
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COMPETITION
* OCCURS WHEN ORGANISMS ATTEMPT TO USE
SAME _____________ (FYI…resources : _____, ________, or _____)
 creating A WINNER AND A LOSER
* COMPETITIVE EXCLUSION PRINCIPLENO TWO SPECIES CAN OCCUPY ___________
_______________
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2 Kinds of Competition
______________ Competition
_____________ Competition
Within a population
(__________species)
Between populations
( ___________species)
Buck vs. Buck
Lion vs. Hyena
________
The relationship
between predator
and prey
• Predator and prey relationships affect _______
________ and _________
• Predator = organism that kills and eats; the ______
• Prey = food; the ______________
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So… What will happen …?
1… to the prey population, if
the predator population
increases?
2… to the prey population, if
the predator population
decreases?
3… to the predator
population, if the prey
population increases?
4… to the predator
population, if the prey
population decreases?
1… the prey population
will
_____________.
2… the prey population
will _____________.
3… the predator
population will
____________.
4… the predator
population will
____________.
Symbiosis
• Organisms of 2
_________
_______
permanently
“_____________”
• 3 Types
1. __________
2. __________
3. __________
Lichens- symbiotic relationship
between __________ & _______
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Mutualism
_________
species
________
• Ex____________
and Sea
Anemone
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Commensalism
One member
_________ and
the other is ____
helped or harmed.
• Ex- Whale
and
Barnacle
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Parasitism
one organism
_________ and
the other is
__________.
Ex: Dog and a _____
Difference between
predation and parasitism...
-Parasitism acts _________
-Parasites can’t benefit from
dead hosts
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Let’s Review
Symbiotic
Relationship
Mutualism
Commensalism
Parasitism
Beneficial (+) or Detrimental (-)
Organism 1
Organism 2
1. What kind of symbiotic relationship does a lichen
exhibit?
2. Identify 2 organisms that have a predator/prey
relationship?
3. Two male gorillas compete for territory. Is this interspecific or intra-specific competition?
4. The competitive exclusion principle says that no 2 species
can occupy the same _______________.
5. What is the difference between a habitat & a niche?
• The diagram to the left represents
a tree containing three different
species of warbler, A, B and C.
Each species occupies a different
niche.
• A fourth species, D, which has the
same environmental requirements
as species B, enters the tree at
point X. Members of species B will
most likely
•
A. live in equilibrium with species D
B. move to a different level and live
with species A or C
C. stay at that level but change
their diet
D. compete with species D for
resources