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Definition
| study of relationships between living organisms & between organisms & their environment |
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Definition
| all the living things within an ecosystem (a group of populations living an interacting with each other in a given area) |
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Definition
| all of the individuals of a particular species living within an ecosystem |
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Definition
| all of the living (biotic) & non-living (abiotic) things in a given area |
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Definition
| a group of organisms that can interbreed to produce fertile offspring |
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Definition
| where in an ecosystem the individulas of a particular species are located |
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Definition
| used to determine distribution of organisms. Define a representative line through area being studied and record which species are found as move along line |
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Definition
| how many individuals are in a given population in an ecosystem |
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Term
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Definition
used to estimate population numbers where direct counting is impossible
Estimated Popn = QUADRAT AVERAGE x (Study area / Quadrat Area) |
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Term
| Capture Recapture Sampling |
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Definition
where direct counting is impossible (particularly useful with animals that will move around a lot)
Estimated Popn = (# of organisms in 1st capture x # of organims in 2nd capture) / # of marked organisms in 2nd capture |
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Definition
| Living factors that affect the distribution of plant & animal species eg preadtors, humans, competitors, food sources |
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Definition
| Non-living factors that affect the distribution of plant & animal species eg temperature, water, light intensity, salinty, soil characteristics, pH |
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