Selection Pressures in an Ecosystem (HSC SSCE Biology): Flashcards

Environmental factors determining which organisms survive & reproduce

Where a species is found geographically within an ecosystem

How many individuals of a species live in an ecosystem

Non-living environmental conditions

Temperature range, light availability, water availability

Living components that influence an organism's existence

1 m × 1 m square frame used to sample areas of an ecosystem

$N = \frac{M \times n}{m}$

Narrow strip crossing entire study area from one side to other

Without variation, few/no individuals survive selection pressures