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Definition
| Combined biotic and abiotic factors found in the area where on organism lives. |
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Definition
| All of the physical, chemical, and biological factors that a species needs to survive, stay healthy, and reproduce in an ecosystem. |
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Definition
| Theory that states that no two species can occupy the same niche at the same time. |
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Definition
| Organisms that share a similar niche but live in different geographical regions. |
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Definition
| Ecological relationship in which two organism attempt to obtain the same resource. |
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Definition
| Process by which one organism hunts and kills another organism for food. |
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Definition
| Ecological relationship between members of at least two different species that live in direct contact with one another. |
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Definition
| Ecological relationship between two species in which each species gets a benefit from the interaction. |
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Definition
| Ecological relationship in which one species receives a benefit but the other species is not affected one way or another. |
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Definition
| Ecological relationship in which one organism benefits by harming another organism. |
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Definition
| Measure of individuals living in a defined are. |
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Definition
| Way in which individuals of a population are spread out over an area or volume. |
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Definition
| Graph showing the surviving members of each age group of a population over time. |
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Definition
| Movement of individuals into a population. |
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Definition
| Movement of individuals out of a population. |
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Definition
| Dramatic increase in population over a short period of time. |
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Term
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Definition
| Population growth that is characterized by a period of slow growth, followed by a period of exponential growth, followed by another period of almost no growth. |
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Term
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Definition
| Number of individuals that the resources of an environment can normally and persistently support. |
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Definition
| Dramatic decline in the size of a population over a short period of time. |
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Term
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Definition
| Environmental factor that limits the growth and size of a population. |
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Term
| Density-dependent limiting factor |
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Definition
| Environmental resistance than affects a population that has become overly crowded. |
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Term
| Density-independent limiting factor |
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Definition
| Environmental resistance that affects a population regardless of population density. |
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Definition
| Sequence of biotic changes that regenerates a damaged community or start a community in a previously uninhabited area. |
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Term
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Definition
| Establishment and development of an ecosystem in an area that was previously uninhabited. |
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Term
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Definition
| Organism that is the first to live in a previously uninhabited area. |
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Term
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Definition
| Reestablishment of a damaged ecosystem in an area where the soil was left intact. |
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