Sustainable Yields :D

Sustainable Yield: natural income that can be exploited each year without depleting the original stock or affecting its potential for replenishment.


There are several concepts involved when calculating the sustainable yield of an ecosystem, such as the carring capacity (K), the population size , and  biomass of the ecosystem. 


In order to calculate the Sustainable Yield, the following formulas should be applied:


SY= Annual Growth and Recruitment - Annual Death and Emigration


This formula measures the inputs and outputs that an ecosystem has, by considering the number of individuals that enter or are born in the ecosystem minus the number of individuals that leave or die.


Another formula used by measuring the sustainable yield available in an ecosystem is:


SY= (Total Biomass or energy at a Time T)+1 - (Total Biomass or energy at a Time T)


This formula consideres the change in biomass in an ecosystem between a period of time.