AP Environmental Science: Unit 2 Review - Biodiversity

Indicator species

________- demonstrates the quality of an ecosystem with presence or absence (ex.

K - selected species

________- usually large, few offsprings, mature after many years, long life span and life expectancy.

Types of Ecosystem Services

________: provisioning, regulating, cultural, supporting

Biodiversity

________- the variety of life in the world or in a particular habitat or ecosystem.

Ecological tolerance

________- range of conditions such as temperature, salinity, flow rate, and sunlight that an organism can endure before injury or death results.

Biotic potential

________- maximum reproductive rate of a population in ideal condition.

Pioneer species

________- first specie to move into an unoccupied habitat during succession.

Island biogeography

________- study of the ecological relationships and distribution of organisms on islands, and of these organisms community structures.

Ecological succession

________- change in a community overtime.

Highest species richness

________- near mainland.

Lowest species richness

________- far mainland.

Primary succession

________- begins with lifeless area, bare rock, no soil, pioneer species (lichens) real rock to form soil.

Secondary succession

________- disturbance alters community, soil already exists.

r - selected species

________- usually small, have Manu offsprings, mature early, short life spans