Unit #2 Vocabulary ( Living World: Biodiversity )

+ A # of different alleles in a population

+ A # of different populations in a ecosystem

+ A # of different habitats in an ecosystem

+ A biological term, doesn’t happen very often + Usually tied to a disturbance

+ a natural disruption that causes change in populatios, cycles or enviornmet

+ Species that have a very narrow or specific range of tolerance

+ Species that have a wide range of tolerance

+ The total # of species present in a community R= # of species

+ Services provided by ecosystems that benefit humans.

+ Provides human with resources food, lumber, pharmaceuticals

+ Keeps ecosystems in balance for our benefit. It’s about preventing problems for us. Decomposition, water purification, regulating gasses

+ Improve human quality of life through… Beauty, survival, economics and education

+ The study of islands +How do these islands existing population come to place or exist there?

+ Supporting the provisional services Pollination, nutrient cycling, and soil formation

+ disturbances that happen at regular periods of time insect hatching

+ disturbances that happen occasionally or is irregular but when certain conditions are present hurricane

+ A disturbance that has no regular intervals and no conditions required earthquake

+ is used to measure the eras of earth and then is broken down into periods + shows the end of a period

+ the action of leaving a homeland done by animals, humans or even cells

+ getting used to a different environment + can be both long term or short term

+ the orderly and progressive replacement of one community type by another until a climax (high point) stage is reached

+ no ecosystem BEFORE + a process of the development of an environment

+ AFTER a natural disturbance such as forest fire or flood + was an ecosystem but was severely affected by a disturbance (they make a comeback)

+ A population of species with an important niche that is connected to many parts of an ecosystem.