Bio 100 chapter 13 - human population Lecture

According to the according figure to the right the

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Unformatted text preview: e environment of the culture bottle is: culture a. 0 flies b. about 100 flies c. about 150 flies d. Between 100 and 150 flies e. Cannot determine from this e. graph graph When a population gets too large, there are When drastic consequences drastic In nature, there are factors that limit In population growth population For example, the starving elk in Yellowstone For National Park in the 1970s National Even though populations can theoretically grow Even exponentially, there growth is limited by physical factors physical Carrying capacity – the maximum population that can be supported by a given environment be Even though a population may start out with Even exponential growth, the growth rate tends to slow down exponential The population growth graph of this type is The called an S-shaped growth curve called The growth rate slows The as it reaches the carrying capacity because of density dependent factors dependent Food supply Increased risk of Increased infectious diseases infectious Increased risk due to Increased waste accumulation waste There are also density independent factors There density that limit growth that Severe weather, such as drought or very high Severe or low temperatures or Whether or not density-dependent factors will Whether reduce human population growth rates as we see in other organisms requires further ecological study ecological Earthquake damage in Earthquake Japan Katrina flood damage If, and how rapidly, the growth rate is decl...
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This note was uploaded on 01/31/2014 for the course BIO 100 taught by Professor Robinson during the Fall '08 term at BYU.

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