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SLS Bio11 Ecology MD
| Term | Definition |
|---|---|
| carrying capacity | the most numerous amount of organisms in a specific species that can survive in their environment in terms of food, water, shelter, etc. |
| chemical equations | 6 CO2 + 6 H2O + Sunlight = C6H12O6 + 6 O2 (photosynthesis) C6H12O6 + 6 O2 = 6 CO2 + 6 H2O + ATP (cellular respiration) |
| climax community | An ecologically balanced environment in which all of the populations of the species are stable. The final stage of succession. |
| commensalism | A type of symbiosis where species A gains something from species B without damaging species B or helping species B. |
| consumer | A species of organisms that gain energy from producers. AKA Heterotrophs. |
| consumer growth | When there is an exponential amount of increase in the populations of consumers. |
| decomposer | an organism that breaks down (decomposes) organic material and makes it available for producers to gain energy from.AKA saprophytes |
| density-dependent factors | A factor limiting the size of a population whose effect is dependent on the number of individuals in the population. |
| density-independent factors | A factor limiting the size of a population whose effect is not dependent on the number of individuals in the population. |
| ecological succession | the observed process of change in the species structure of an ecological community over time |
| energy flow | the flow of energy through a biological food chain |
| exponential growth | growth whose rate becomes ever more rapid in proportion to the growing total number or size. |
| pyramid of energy | A graphical model of energy flow in a community. The different levels represent different groups of organisms that might compose a food chain. |
| reactants | The reatants from the processes of photosynthesis and cellular respiration |
| steady state | homeostasis, any matter entering the ecosystem is equivalent to the matter exiting the system |
| symbiosis | interaction between two different organisms living in close physical association, typically to the advantage of both. |
| logistic growth | occurs when the growth rate decreases as the population reaches carrying capacity |
| mutualism | when both of the species in the relationship benefit each other |
| parasitism | when species A benefits species B but damages species B by doing so |
| photosynthesis | the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct |
| pioneer species | The species that came into the ecosystem first and brought in other species along with it afterwards |
| population | the number of organisms in a specific ecosystem that belong to a certain species |
| producer | Producers are organisms that can make their own energy through biochemical processes, which are just processes in living things that involve chemical reactions. Also called autotrophs, the usual way producers make energy is through photosynthesis |
| products | The products from the processes of photosynthesis and cellular respiration |
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