Population Growth/ Human Application
- Cornell University
- Biology 1610
- Population Growth/ Human Application
Last Modified: 2011-06-30
refers to a factor that causes birth, death, or dispersal rates to change as the density of population changes
the largest harvest [yield] that a population can support over an indefinite period. at high population size, sustainable yield is low because replacement rate is slow near carrying capacity. assume: no time lags, constant r/K, constant envir.
1. Calculate the number of people (N) that can be supported by resources (R) = N/R
2. Calculate the resources (R) produced on average area of Earth’s surface (A) = R/A
3. Calculate the number of people on Earth’s surface, i.e., N/R x R/A = N/A
I = P*A*T
I = Overall Impact
P= Population Size
A = Per capita level of Affluence
T = Environmental disruptiveness of Technologies used
Estimates a population’s consumption of food, materials, and energy in terms of the area of biologically productive land or sea required to produce those natural resources
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