biotic and abiotic factors -...
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![Page 1: Biotic and Abiotic Factors - blogs.fcps.netblogs.fcps.net/mmswinstar/wp-content/.../35/2019/01/LimitingFactorsppt.pdf · Abiotic Factor-A non-living part of an ecosystem. ex. Water,](https://reader030.vdocuments.net/reader030/viewer/2022040206/5e084820360bda3531548d07/html5/thumbnails/1.jpg)
Abiotic Factor- A non-living part of an
ecosystem.
ex. Water, temperature, weather, sunlight
and soil.
Biotic Factors- A living organism that affects or
influences an ecosystem.
ex. Plants, animals, bacteria, fungi.
Biotic and Abiotic Factors
![Page 2: Biotic and Abiotic Factors - blogs.fcps.netblogs.fcps.net/mmswinstar/wp-content/.../35/2019/01/LimitingFactorsppt.pdf · Abiotic Factor-A non-living part of an ecosystem. ex. Water,](https://reader030.vdocuments.net/reader030/viewer/2022040206/5e084820360bda3531548d07/html5/thumbnails/2.jpg)
Limiting Factors
Limiting factors can
include:
1. Competitors
![Page 3: Biotic and Abiotic Factors - blogs.fcps.netblogs.fcps.net/mmswinstar/wp-content/.../35/2019/01/LimitingFactorsppt.pdf · Abiotic Factor-A non-living part of an ecosystem. ex. Water,](https://reader030.vdocuments.net/reader030/viewer/2022040206/5e084820360bda3531548d07/html5/thumbnails/3.jpg)
Limiting Factors
Limiting factors can
include:
1. Competitors
2. Disease and
parasites
![Page 4: Biotic and Abiotic Factors - blogs.fcps.netblogs.fcps.net/mmswinstar/wp-content/.../35/2019/01/LimitingFactorsppt.pdf · Abiotic Factor-A non-living part of an ecosystem. ex. Water,](https://reader030.vdocuments.net/reader030/viewer/2022040206/5e084820360bda3531548d07/html5/thumbnails/4.jpg)
Limiting Factors
Limiting factors can
include:
1. Competitors
2. Disease and
parasites
3. Weather
![Page 5: Biotic and Abiotic Factors - blogs.fcps.netblogs.fcps.net/mmswinstar/wp-content/.../35/2019/01/LimitingFactorsppt.pdf · Abiotic Factor-A non-living part of an ecosystem. ex. Water,](https://reader030.vdocuments.net/reader030/viewer/2022040206/5e084820360bda3531548d07/html5/thumbnails/5.jpg)
Limiting Factors
Limiting factors can
include:
1. Competitors
2. Disease and
parasites
3. Weather
4. Fires
![Page 6: Biotic and Abiotic Factors - blogs.fcps.netblogs.fcps.net/mmswinstar/wp-content/.../35/2019/01/LimitingFactorsppt.pdf · Abiotic Factor-A non-living part of an ecosystem. ex. Water,](https://reader030.vdocuments.net/reader030/viewer/2022040206/5e084820360bda3531548d07/html5/thumbnails/6.jpg)
Limiting Factors
Limiting factors can
include:
1. Competitors
2. Disease and
parasites
3. Weather
4. Fires
5. Available habitat
![Page 7: Biotic and Abiotic Factors - blogs.fcps.netblogs.fcps.net/mmswinstar/wp-content/.../35/2019/01/LimitingFactorsppt.pdf · Abiotic Factor-A non-living part of an ecosystem. ex. Water,](https://reader030.vdocuments.net/reader030/viewer/2022040206/5e084820360bda3531548d07/html5/thumbnails/7.jpg)
Limiting Factors
Limiting factors can
include:
1. Competitors
2. Disease and
parasites
3. Weather
4. Fires
5. Available habitat
6. Predators
![Page 8: Biotic and Abiotic Factors - blogs.fcps.netblogs.fcps.net/mmswinstar/wp-content/.../35/2019/01/LimitingFactorsppt.pdf · Abiotic Factor-A non-living part of an ecosystem. ex. Water,](https://reader030.vdocuments.net/reader030/viewer/2022040206/5e084820360bda3531548d07/html5/thumbnails/8.jpg)
1. Competitors-competition results when organisms struggle to survive in a habitat
with limited resources
Red-Tailed Hawk Barred Owl
•Birds of prey: live
in forests on the
edge of fields
•Eat mice and
other rodents
•Nest in trees
•Live in same
habitat, use same
resources, so they
compete with each
other
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2. Disease and Parasites
Diseases and
parasites can be
dependent on
population size and
habitat
Larger population =
more parasites and
disease = limit how
big population gets
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3. Weather
Storms
Drought
Flooding
Heat/cold
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4. Fires
Fires lead to
succession which
is a predictable
change in the
community over
time.
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5. Available Habitat
Human activities play a
large role
Development (homes,
buildings, parking lots),
damming rivers, clear
cutting forests, hunting.
Parts of the habitat can
also be limiting: amount
of food(prey), available
nesting sites
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6. Predators
Predator-prey
relationship can
be a delicate
balance
between the
two
populations.
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Predators
As the prey
population
increases, the
predator population
increases. As the
prey population
decreases, then so
does the predator
population.
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1. Density-Dependent Factors
Limiting factors that depend on population
size
Density-dependent factors become limiting
only when population density reaches a
certain level
Does not affect small, scattered populations
-competition, predators, disease, availability of
food, migrations
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Density-Independent Factors
Factors that affect
populations regardless of
the size or density.
Examples:
Unusual weather (Floods,
Hurricanes)
Season cycles
Human activities (damming
rivers, forest cutting)
Earthquakes, volcanoes,
asteroids
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What is Carrying Capacity?
Because of these limiting factors, each
ecosystem has a finite capacity for growth
connected to its carrying capacity.
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What is Carrying Capacity?
Carrying capacity is the
maximum number of
individuals of a species that
an ecosystem can support.
If the amount of available
resources increases, so
does the carrying capacity.