ECOSYSTEMS (relationships and competition for limiting factors )
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Transcript of ECOSYSTEMS (relationships and competition for limiting factors )
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ECOSYSTEMS(relationships and
competition for limiting factors )
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Ecosystems…Include all the different organisms living in a certain area and the physical environment
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Ecosystems… Do not have clear boundaries between them… organisms move from one
ecosystem to another
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ORGANISM: one individual living
thing
ONE red zebra fish
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SPECIES- Group of organisms able to reproduce
fertile offspring that resemble each other
all red zebra fish
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POPULATION: group of individuals of the same species living in the
same area
all red zebra fish living in Bobcat Lake
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COMMUNITY: group of interacting populations of different species in the same
area
all red zebra fish, snails, seaweed, and purple fish living
in Bobcat Lake
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ECOSYSTEM: a community
and the abiotic factors that affect it
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PRODUCERS•Form the base
of all ecosystems
•Organisms that make their own
food (by photosynthesis)
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CONSUMERS•Depend on producers for
survival•Organisms that eat producers or other consumers •PRIMARY- eat producers•SECONDARY- eat other consumers
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PRIMARY
CONSUMERS
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SECONDARY
CONSUMERS
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•Organisms that digest producers and consumers when they die
DECOMPOSERS &
SCAVENGERS
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•DECOMPOSERS- organisms that break down dead organisms & release nutrients back into the ecosystem
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•SCAVENGERS-
animals that eat
organisms killed
by a predator-
vultures and
opossums
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HABITAT- The actual place where an organism lives
NICHE- An organism’s way of life, all
the things it does to survive
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HABITAT- The actual place where an organism lives
Which populations share the same habitat? Niche?
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Food webs • show the
interaction of all the types of organisms in an environment.
• show how energy flows in an ecosystem
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Ecosystems are made up of….
ABIOTIC
FACTORS-
nonliving parts
of the
ecosystem
BIOTIC FACTORS- living parts of the
ecosystem
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Organisms need certain biotic and abiotic factors for survival.
These flowers need abiotic factors of water, sunlight and the right
temperature to grow
DEPENDENCE
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COMPETITIONRelationship between species in
which they attempt to use the same biotic or abiotic factor
2 plants on the forest
floor competing for
sunlight
Hyena and lion fight over the same animal carcass
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HABITAT- The actual place where an organism lives
How might the hyena and the cheetah compete for a biotic factor?
How might the primary consumers compete for an abiotic factor in the
African grassland?
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PREDATION
One organism kills
and eats another
PREY-
one that
is eaten
PREDATOR- one that does the eating
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Can you name a predator-prey in the food web?
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PARASITISM
Organisms that live in or on another
organism and feed on it without
immediately killing it
The parasite takes its
nourishment from the
host.
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Can you name a predator-prey?How do the fox and hawk compete?
Can you name the abiotic factors?
Can you name the biotic factors?
Can you name a producer-consumer?
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Fish eating algae off a sea turtle shell provides food for fish while cleaning the
turtle shell
MUTUALISMCooperati
ve partnershi
p between
two species.
BOTH SPECIES BENEFIT
!
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Relationship in which one species is helped and the other is neither helped
nor harmed
COMMENSALISM
Remoras and Sharks:
remoras attach themselves to sharks & feed on scraps of food left over
from the shark’s meals