Term
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Definition
| the study of interactions among organisms and between organisns and their environments |
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Definition
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| What are some examples of abiotic factors? |
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Definition
| Temperature, water. sunlight, wind, rocks, and soil |
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| What is a periodic disturbance? |
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Definition
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Definition
| a living thing (examples: animals and plants) |
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| What are all the levels of ecological organization? order in largest to smallest. |
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Definition
| Biosphere, biomes, ecosystems, community, population, species, then individual |
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Term
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Definition
| portion of earth that supports all life |
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Definition
| areas with similar climate and species |
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Term
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Definition
| living and nonliving things in an area ( ex: terrestial, marine aquatic, and freshwater aquatic) |
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| group organisms of the same species that inerbreed and live in the same palce at the same time |
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Definition
place where an organism lives
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Definition
| role and position a species has in its environment |
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Term
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Definition
| close association of organisms of different species |
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Term
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Definition
| one organism benefits while the other is neither harmed nor helped |
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Term
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Definition
| both organisms are helped |
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Term
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Definition
| one organism is helped and the other is harmed |
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Term
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Definition
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Definition
| two organsims fight for something they both want |
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Term
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Definition
makes its own food
photo- goes through photosynthesis, plants
chemo- don't use sunlight, bacteria |
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Term
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Definition
| predator to prey, detritovore, scavengers, coprovore |
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Term
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Definition
| eats decaying plant materials (worm) |
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Term
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Definition
| feeds on something that is already dead |
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Definition
| eats dead or decomposing materials ( fungi, bacteria) |
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Term
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Definition
| Show how matter and energy flow through ecosystems |
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Definition
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Definition
| expresses all possible feeding relationships at each level |
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Term
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Definition
| energy decreases at each succeeding tropic level; only 10% of the energy is passed |
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Term
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Definition
| estimate of population size at each trophic level |
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Term
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Definition
| mass of living material at each trophic level |
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Term
| plants obtain phosporous from |
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Definition
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Term
| animals obtain phosporous from |
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Definition
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Term
| Phosporous returns to soil through |
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Definition
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Term
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Definition
| environmental factors that affect an organisms ability to survive |
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Definition
| natural orderly change and species replacement in community |
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Term
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Definition
| new land is created (ex: glacier recedes or volcano destroys soil) |
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Term
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Definition
| first species in an area (usually lichen) |
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Term
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Definition
| communtiy is disrupted by a natural disaster or human actions; faster than primary succession |
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Term
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Definition
| near the poles of the earth; low rainfal and low temperature ( usually below freezing) topsoil is permafrost; grasses, shrubs, mosquitos, reindeer, and weasels |
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Term
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Definition
(northern coniferous forest)
south of tundra
moderate rainfall, wetter than tundra
temp. = wetter than tundra
fir and spruce trees
caribou and snowshoe hare
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Term
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Definition
(decidous forest)
east coast of the US
moderately high rainfall
distinct seasons
hardwood trees, and bushes
black bear, squirrels
humus and clay |
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Term
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Definition
near equator;
very high rainfall and temperature;
soil has very few nutrients;
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Term
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Definition
(prairies, steppes, pampas)
north america, austalia, africa, and russia;
moderate rainfall and temperature
soil is very fertile |
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Term
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Definition
near equator and othersise of mtns;
very little rainfall;
very high temp
soil is sandy dry |
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Term
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Definition
(ocean)
3/4 of the earth
temp, varies
algae and plankton |
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