Unit 2 Flashcards
Ecosystem Diversity
The number of different habitats available in a given area
Species Diversity
The number of different species in an ecosystem and the balance or evenness of the population sizes of all species in the ecosystem
Genetic Diversity
How different the genes are of individuals within a population.
Species Richness
Richness is just the total number of different species found in an ecosystem.
Evenness
A measure of how all of the individual organisms in an ecosystem are balanced between the species.
Bottleneck Event
An environmental disturbance that drastically reduces population size and kills organisms regardless of their genome.
Inbreeding Depression
Is when organisms mate with close relatives, which leads to a higher chance of harmful mutations.
Ecosystem Resilience
The ability of an ecosystem to recover and return to its original conditions after a major disturbance. Higher species diversity leads to higher ______
Island Biogeography
The study of ecological relationships and community structure on islands
2 basic rules of island biogeography
- Larger islands support more total species
* Islands closer to the mainland support more species
Ecological Range of Tolerance
Range of conditions such as temperature, salinity, PH, or Sunlight that an organism can endure before injury or death.
Optimal Range
The range where organisms survive, reproduce and grow.
Zone of Physiological Stress
The range where organisms survive but experience some stress such as infertility, lack of growth, decreased activity, etc
The zone of Intolerance
The range where organisms will die.
Natural Disturbances
A natural event that disrupts the structure and or functions of an ecosystem.
