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19 Cards in this Set
- Front
- Back
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Ecosystems |
living and non living components |
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Biomes |
the major ecological communities of Earth characterized by vegetation present |
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What do different biomes result from? |
differences in temp. and precipitation and the extent to which they vary from season to season |
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Ecosystems share 2 features: |
1. Biotic environment- living orgs. 2. Abiotic/physical environment- chemical resources and physical conditions |
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2 major factors that determine climate: |
1. Temperature 2. Precipitation |
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House Mouse |
Fast intensive reproductive investment, 6-10 babies a month, sexual maturity at 1 month |
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How many people are added to the earth every year? |
80 million ppl. |
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Ecology |
the study of interactions between organisms and their environment |
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How can ecology be studied? (what levels) |
individuals, populations, communities, ecosystems |
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Population Density |
the # of individuals of a species in a given area |
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Carrying Capacity, K |
the ceiling cap on a populations growth |
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Density Dependent Factors |
1. Food supply 2. Habitat for living/breeding 3. parasite and disease risk 4. Predation risk |
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Fundamental Niche |
the full range of environmental conditions under which a species can live |
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Realized Niche |
Where and how a species is ACTUALLY living |
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Character Displacement |
Changes within species (bird beaks) |
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parasitism |
symbiotic relationship in which one organism parasite) benefits while the other (host) is harmed. |
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Chemical Formula |
CO2 + H20 > Sun Energy > Sugars + 02 |
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Ecological Succession |
refers to species of predictable changes in structure of ecological community |
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Keystone Species |
has unusually large influence on the presence of absence of number others in the community |
