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Ecology - Biology
| Term | Definition |
|---|---|
| Ecology | The study of the interactions of living organisms with one another and with their environment |
| Biosphere | all organisms and the part of Earth where they exist |
| Biotic | describes living factors in the environment |
| Abiotic | describes the nonliving part of the environment, including water, rocks, light, and temperature |
| Biome | a large region characterized by a specific type of climate and certain types of plants and animal communities |
| ecosystem | a community of organisms and their abiotic environment |
| habitat | the place where an organism usually lives |
| niche | all of the physical, chemical, and biological factors that a species needs to survive, stay healthy, and reproduce in an ecosystem |
| food chain | the pathway of energy transfer through various stages as a result of the feeding patterns of a series of organisms |
| food web | a diagram that shows the feeding relationships between organisms in an ecosystem |
| energy pyramid | a triangular diagram that shows an ecosystem's loss of energy, result: energy passes through the ecosystem's food chain; row in the pyramid represents a trophic level in an ecosystem, and the row represents that energy stored in that trophic level |
| biomass | total dry mass of all organisms in a given area |
| biodiversity | the variety of organisms in a given area, the genetic variation within a population, the variety of species in a community, or the variety of communities in an ecosystem |
| succession | the replacement of one type of community by another at a single location over a period of time |
| pioneer species | a species that colonizes an uninhabited area and that starts an ecological cycle in which many other species become established |
| climax community | the final stage of biotic succession attainable by a plant community in an area under the environmental conditions present at a particular time |
| exponential growth | logarithmic growth, or growth in which numbers increase by a certain factor in each successive time period |
| logistic growth | population growth that starts with a minimum number of individuals and reaches a maximum depending on the carrying capacity of the region; described by an S-shaped curve |
| carrying capacity | the largest population that an environment can support at any given time |
| reneweable resources | a natural resource that can be replaced at the same rate at which the resource is consumed |
| nonrenewable resources | a resource that forms at a rate that is much slower than the rate at which the resource is consumed |
| greenhouse effect | the warming of the surface and lower atmosphere of Earth that occurs when carbon dioxide, water vapor, and other gases in the air absorb and re-radiate infrared radiation |
| global warming | a gradual increase in average global temperature |
| endangered species | a species of animal or plant the is seriously at risk of extinction |
| invasive species | an organism that causes ecological or economic harm in a new environment where it is not native |
Created by:
kyra806
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