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Ecology
Organisms Behavior
| Term | Definition |
|---|---|
| Ecosystem | The community of different species in a particular geographic area and all of their interactions with each other and the physical environment; ecosystems are also called ecological networks. |
| Ecological succession | Series of progressive changes in the composition of an ecological community over time. |
| Community | Consisting of populations of different species that live together and interact with one another. |
| Primary succession | Newly exposed or newly formed rock is colonized by living things for the first time. For example, primary succession occurs when new land is formed or bare rock is exposed, providing a habitat that can be colonized for the first time. |
| Secondary succession | An area previously occupied by living things is disturbed—disrupted—then recolonized following the disturbance. |
| Pioneer species | Species help to further break down the mineral-rich lava into soil where other, less hardy species can grow and eventually replace the pioneer species. |
| Climax community | Is consider the endpoint of succession, is a stable, unchanging final state. |
| Disturbance | Temporary change in environmental conditions that causes a pronounced change in an ecosystem. |
| Abiotic | Non-living. |
| Biotic | Organisms. |
| Decomposer | An organism that breaks down organic material over time. |
| Autotroph | An organism, such as a plant, that can make its own energy-rich food molecules from inorganic materials and an energy source such as sunlight; autotrophs are also called producers. |
| Heterotroph | An organism, such as a sea turtle or a hawk, that must eat other organisms to obtain energy-rich food molecules because they cannot make the molecules themselves; heterotrophs are also called consumers. |
| Consumer | An organism, such as a cow or a shark, that must eat other organisms to obtain energy-rich food molecules because they cannot make the molecules themselves; consumers are also called heterotrophs. |
| Primary consumer | An animal or other heterotroph that eats producers or herbivores. |
| Secondary consumer | An animal that eats primary consumers. |
| Tertiary consumer | An animal that eats secondary consumers. |
Created by:
Victor Davila Borja
Popular Ecology sets