A long-term fish experiment reveals how a mechanism called density dependence, in which the population growth rate slows as the number of individuals rises, affects population dynamics on time scales ...

Multiply the initial population by the growth rate. This will give you the number of individuals that are added to the population in a 10-year period. (This number should be rounded up, since partial ...

Biologists have long counted songs to get an idea of bird abundance but it is much harder to work out the actual density. The sound recordings from a microphone placed in forests or woods can now be ...

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