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28 Cards in this Set
- Front
- Back
Abiotic Component |
Non-living component. ex: soil, light |
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Biotic component |
Living component that affects another organism. Includes community and population. |
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Community |
A group of interacting species living in the same area. |
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Population |
Groups of individuals belonging to the same species that live in the same community. |
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Habitat |
Area occupied by an organism (same species) |
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Niche |
"Role" of population within a habitat. |
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Biomass |
Total weight of an organism in a given area. |
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Species richness |
How many species. |
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Species evenness |
How many individuals in each species. Often compared with other species. |
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Primary productivity |
Measure of organic energy produced, ex:photosynthesis. |
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Succession |
Changes in community composition through time ex: forest fire. |
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Early stages (succession) |
1. Higher rate of productivity. 2. Less biomass. 3. Lower species diversity. |
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Late stages (succession) |
1. Lower rates of productivity. 2. More biomass. 3. More species diversity. |
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Energy flow |
Reused, but not recycled. |
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Trophic levels |
Feeding levels--producers, herbivores (primary), carnivores (secondary), decomposrs. Food Chain. |
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Food Web |
A system of interconnecting and interdependent food chains. Most consumers can eat a variety of organisms. |
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Nutrient cycling |
Reused and recycled. Includes H2O, CO2, N2, and P. Usually starts with plants taking these into their tissues. |
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Nutrient Pools |
Include water bodies, atmosphere, and soil. Abiotic components. |
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Exponential Growth |
Increasing greatly. Function is proportional to the value. |
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Density-independent factors |
Weather, natural disasters. Not dependent on size and resources. 1. Produce a lot of offspring 2. Mature very quickly 3. Short life-spans |
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Density-dependent factors |
Dependent of size and amount of resources. Need stable environment. Population levels off. 1. Produce few offsping 2. Long life span 3. Mature slowlt. |
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Carry capacity |
Maximum population an area can support over a sustained period of time. |
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Surface zone (oceans) |
Photosynthesis can occur. Plankton. |
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Deep water zone |
Fewer species |
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Coastal Zone |
Kelp beds (temperate areas)--midway between equator and north pole. Coral reefs (tropical areas)--equator, coral=animals. |
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Near-shore zone |
Sunlight hits sediment, starts from shore. |
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Wetlands |
Shallow waters. Swamps have trees and marshes have no trees. |
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Streams |
Not a sitting body of water. |