Powerpoint Tenth class
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Transcript of Powerpoint Tenth class
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Biotic & Abiotic Influences
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Biotic & Abiotic Influences
Ecosystem: all the living organisms that share a
region & their physical & chemical environment
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Biotic & Abiotic Influences
Ecosystem: all the living organisms that share a
region & their physical & chemical environmente.g. pond
forest
oasis
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Biotic & Abiotic Influences
Biotic Factors: living things, their remains, and
features, such as nests, associated with theiractivities
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Biotic & Abiotic Influences
Biotic Factors: living things, their remains, and
features, such as nests, associated with theiractivities
Population: a group of individuals of the same
species
Community: all of the different species that
interact in an ecosystem
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Biotic & Abiotic Influences
Sustainable Ecosystem: an ecosystem that is
maintained through natural processes
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Biotic & Abiotic Influences
Sustainable Ecosystem: an ecosystem that is
maintained through natural processesSustainability: the ability to maintain natural
ecological conditions without interruption or
weakening
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Biotic & Abiotic Influences
Limiting Factor: any factor that restricts the size
of a populatione.g. biotic: availability of food
abiotic: access to water
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Biotic & Abiotic Influences
Tolerance Range: the abiotic conditions within
which a species can survive
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Biotic & Abiotic Influences
Tolerance Range: the abiotic conditions within
which a species can surviveey abiotic factors:
-light availability
-water availability
-nutrient availability
-temperature
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Biotic & Abiotic Influences
Biotic Factors: interactions with other organisms
influence a species' successe.g. Competition: two individuals vying for the
same resource
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Biotic & Abiotic Influences
Biotic Factors: interactions with other organisms
influence a species' successe.g. Competition: two individuals vying for the
same resource
Pre!ation: one individual feeds on
another
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Biotic & Abiotic Influences
Biotic Factors: interactions with other organisms
influence a species' successe.g. Competition: two individuals vying for the
same resource
Pre!ation: one individual feeds on
another
"utualism: two individuals benefitting
each other
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Biotic & Abiotic Influences
Biotic Factors: interactions with other organisms
influence a species' successe.g. Competition: two individuals vying for the
same resource
Pre!ation: one individual feeds on
another
"utualism: two individuals benefitting
each other
Parasitism: one individual lives on or inand feeds on a host organism
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Biotic & Abiotic Influences
Biotic Factors: interactions with other organisms
influence a species' successe.g. Competition: two individuals vying for the
same resource
Pre!ation: one individual feeds on
another
"utualism: two individuals benefitting
each other
Parasitism: one individual lives on or inand feeds on a host organism
Commensalism: one individual benefits
& the other neither benefits nor is harmed
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Biotic & Abiotic Influences
Carrying Capacity: the maximum population size
of a particular species that a given ecosystem cansustain
-carrying capacity is set by the influences of all
the biotic and abiotic factors over a long period
of time
-sustainable populations live at or below their
carrying capacity
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Biotic & Abiotic Influences
Carrying Capacity: the maximum population size
of a particular species that a given ecosystem cansustain
sustainable
population
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Biotic & Abiotic Influences
Carrying Capacity: the maximum population size
of a particular species that a given ecosystem cansustain
s human
population
growth
sustainable!