Limiting Factors Carrying Capacity We now know whats

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Limiting Factors & Carrying Capacity

Limiting Factors & Carrying Capacity

We now know what’s in an ecosystem, but what controls how much *stuff* is

We now know what’s in an ecosystem, but what controls how much *stuff* is in there?

Organisms compete for… • • Space Water Food or Light Nutrients in lithosphere Which

Organisms compete for… • • Space Water Food or Light Nutrients in lithosphere Which of the above are ABIOTIC?

And are also affected by… • Disease • Each other (fights between some males

And are also affected by… • Disease • Each other (fights between some males to see who gets to reproduce cause deaths) • Temperature Which of the above are BIOTIC?

• The 7 factors listed above are called Limiting Factors. • Different species

• The 7 factors listed above are called Limiting Factors. • Different species require different amounts or conditions to survive. These conditions are the species Tolerance Range.

Competition for Limiting Factors and Tolerance Ranges create a… • Carrying Capacity: The maximum

Competition for Limiting Factors and Tolerance Ranges create a… • Carrying Capacity: The maximum number of individuals of a species able to survive in an area. • Carrying capacity for all consumers increases as the amount of producers increase… *** Producers are VERY important to healthy ecosystems!!***

Symbiotic Relationships Can Increase Carrying Capacity! • Mutualism: Both species benefit and both populations

Symbiotic Relationships Can Increase Carrying Capacity! • Mutualism: Both species benefit and both populations increase where they live together. • Commensalism: One species benefits and one is not affected, so only one population increases • Parasitism or Predation: One species benefits (its population increases) and one species is harmed (its population decreases)

Master of the World Journal Entry: • How many producers will you need to

Master of the World Journal Entry: • How many producers will you need to support the rest of your ecosystem?

Homework: • Questions # 2 -4, 6, 8 on page 55

Homework: • Questions # 2 -4, 6, 8 on page 55

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