Class notes 2.8

Class notes 2.8 - Biology 1006- 2/8 A population is within...

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Biology 1006- 2/8 A population is within a community Population: a collection of individuals of one species which occupy a particular area at the same time. Involves interaction, competition, mating, feeding, and seeking shelter. May or may not be social Species: all organisms which share a common gene pool (reproduce with one another) and are reproductively isolated from all other such groups (biological species concept) Population ecology has a lot to do with the survival of a species Population growth: P (population size)=BR (Birth Rate) + IR (immigration Rate) – DR (death rate) – ER (Emigration Rate) o Density- the number of individuals per area o Dispersion- how they are distributed in a certain area Distribution of populations— Random= species found uncommonly and their food is wide- spread so they are found in random places, no particular distribution pattern Even= uniform habitat, distribution, and distribution of resources, they are territorial and they compete and spread out to protect their territories, none of them compete for food or water, avoid competition and maximize resources for themselves (birds and mammals, plants where resources are fairly limited)
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This note was uploaded on 01/18/2012 for the course BIO 1006 taught by Professor Staff during the Spring '10 term at Virginia Tech.

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Class notes 2.8 - Biology 1006- 2/8 A population is within...

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