| A | B |
|---|
| aquatic succession | replacement of aquatic by terrestrial communities |
| balanced herbivory | balance amoung competing plant populations by herbivores |
| biotic potential | number of offspring of a species may reproduce under ideal conditions. |
| carrying capacity | maximum population a habitat will support without the habitat being degraded over time. |
| climax ecosystem | a stage of equilibrium between all species and the physical environment. |
| critical number | the minimum population base (number) of a species |
| ecological restoration | reclaiming natural ecosystems. |
| ecological succession | the orderly transition from one biotic community to another. |
| environmental resistance | biotic and abiotic factors that tend to decrease population numbers |
| exponential increase | a doublingof each generation. |
| fire climax | ecosystems that depend on the occurance of fire to maintain existing balance. |
| host specific | parasites that attack only one species and their close relatives. |
| monoculture | growth of a single species over a wide area. |
| natural enemies | predators and parasites that control population size. |
| population explosion | the result of exponential increase. |
| population density | number of individuals per unit area |
| primary succession | succession in an area that has not been previously occupied |
| recruitment | number of offspring that survive and reproduce |
| replacement level | number of offspring required to replace breeding population. |
| reproductive stategies | the way species achieve recruitment in their poplations. |
| secondary succession | succession in an area that has been previously occupied. |
| territoriality | defending territory against encroachment of other of the same species. |
