Important words and terms in AP Biology Chapter 53 (Community Ecology)
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| 909237922 | community | an assemblage of species living close enough together for potential interaction | |
| 909237923 | species richness | the number of species a community contain and relative abundance of different species | |
| 909237924 | individualistic hypothesis | depicts a community as a chance assemblage of species found in the same area because they happen to have similar abiotic requirements (redundancy model) | |
| 909237925 | interactive hypothesis | depicts a community as an assemblage of closely linked species locked in by mandatory biotic interactions (rivet model) | |
| 909237926 | competitive exclusion principle | (-/-) [competition] two species cannot coexist in a community | |
| 909237927 | ecological niche | the sum total of organism's use of abiotic/biotic resources in the environment | |
| 909237928 | resource partitioning | the differentiation of niches that enables two similar species to coexist in a community | |
| 909237929 | predation | (+/-) eats prey | |
| 909237930 | parasitism | predators live on/in a host and depend on the host for nutrition | |
| 909237931 | Cryptic coloration | camouflage, deceptive markings | |
| 909237932 | aposematic coloration | indicated by warning colors, and is sometimes associated with defenses (toxins) | |
| 909237933 | batesian mimicry | a harmless species mimics a harmful one | |
| 909237934 | mullerian mimicry | where two or more unpalatable species resemble each other | |
| 909237935 | mutalism | (+/+) two species benefit from their interaction | |
| 909237936 | commensalism | (+/0) one species benefits from the interaction, but other is not affected (ie. barnacles attach to a whale) | |
| 909237937 | coevolution | the reciprocal evolutionary adaptations of two interacting species | |
| 909237938 | food chain | transfer of food energy from its source in photosynthetic organisms through herbivores and carnivores | |
| 909237939 | food webs | food chains as non-isolated units but are hooked together | |
| 909237940 | 10% rule | energy is lost as it moves through the trophic level | |
| 909237941 | autotroph | producer (makes own food) | |
| 909237942 | heterotroph | consumer | |
| 909237943 | keystone species | strong control on community structure; if we remove a dominant species, it can change the entire community structure | |
| 909237944 | disturbance | fire, weather or human activity that can alter communities | |
| 909237945 | ecological succession | the sequence of community changes after a disturbance | |
| 909237946 | primary succession | (no soil) begins in a lifeless area, ie. a new volcanic island | |
| 909237947 | secondary succession | (soil) existing community has been cleared by some event | |
| 909237948 | biodiversity | two key factors: size and biogeography | |
| 909237949 | species richness | the total number of species in the community |
