Term
| 25 species per acre is a reference to an area's |
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Definition
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Term
| Which community hypothesis seems most likely? |
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Definition
| Individualistic hypothesis |
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Term
| Interspecific competition occurs between: |
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Definition
| Different species of a community |
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Term
| Can 2 species ever occupy the exact same niche? |
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Definition
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Term
| Resource partitioning often leads to |
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Definition
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Term
| Why is character displacement less common in allopatric species? |
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Definition
| Not competing, in different places |
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Term
| How does a plant often protect itself from herbivores? |
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Definition
| Chemical toxins have no need to "diverge" |
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Term
| How does cryptic coloration benefit prey? |
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Definition
| Makes prey difficult to spot |
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Term
| Poison dart frogs are neon blue, this mode of coloration is |
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Definition
| Aposematic (warning) coloration |
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Term
| A harmless moth has black and yellow stripes, this type of mimicry: |
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Definition
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Term
| A tapeworm is this type of parasite: |
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Definition
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Term
| Lice are this type of parasite |
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Definition
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Term
| Some phorid flies lay eggs in caterpillar skin, and example of |
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Definition
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Term
| The oxpecker bird and water buffalo have this type of symbiotic relationship |
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Definition
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Term
| The ant and the acacia tree have this type of symbiosis: |
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Definition
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Term
| Pollinators and flowers evolve together, an example of |
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Definition
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Term
| The killer whale that eats the tuna who ate fish taht fed on zooplankton is a |
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Definition
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Term
| The snake that ate the mouse who ate the grasshopper is a |
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Definition
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Term
| Primary producers in the ocean |
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Definition
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Term
| Primary producers on land |
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Definition
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Term
| Are you exclusively a member of one trophic level? |
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Definition
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Term
| Which is more realistic, a food chain or a food web? |
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Definition
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Term
| Why do food chains have 5 or fewer trophic levels? |
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Definition
| Inefficent energy exchange prevents longer chains |
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Term
| Why does a tropical rainforest have more trophic levels than a boreal forest? |
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Definition
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Term
| Ecological dominants are usually |
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Definition
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Term
| Top predators are often this type of species |
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Definition
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Term
| Top predators are often this type of species: |
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Definition
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Term
| How does loss of sea otters destroy a kelp forest? |
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Definition
| Destroys all who inhabit them |
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Term
| Are disturbances always detrimental to a community? |
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Definition
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Term
| How do primary and secondary succesion differ? |
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Definition
| Primary involves creation of soil from rock; Secondary occurs when soil left intact |
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Term
| A hardwood forest is covered by a lava flow. Describe the typical succession |
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Definition
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Term
| How are lichens important to primary succession? |
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Definition
| They can grow on solid rock |
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Term
| How are lichens important to primary succesion? |
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Definition
| They can grow on solid rock |
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Term
| What becomes of species richness as one moves from equator to poles? |
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Definition
| Declines (less energy input) |
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Term
| How does evapotranspiration relate to species richness? |
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Definition
| Can be used measure changes in species richness |
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Term
| In a food chain, autotophs are: |
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Definition
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Term
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Definition
| Second and tertiary consumers or higher |
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Term
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Definition
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Term
| These organisms tie all trophic levels together |
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Definition
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Term
| These organisms ties all trophic levels together |
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Definition
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Term
| Why does an ecosystem continuously loose energy? |
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Definition
| Some lost mostly as metabolic heat |
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Term
| A constant supply of energy must be put into an ecosystem, how does this differ for nutrients? |
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Definition
| Nutrients are recyvled in ecosystems |
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Term
| Primary production is a measure of |
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Definition
| How much light energy is harvested by the autotrophs |
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Term
| The most productive aquatic ecosystems: |
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Definition
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Term
| The most productive terrestrial ecosystems: |
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Definition
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Term
| Ecosystem biomass is a measure of: |
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Definition
| The weight of vegitation produced over time |
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Term
| Limiting factors in aquatic ecosystems |
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Definition
| Light (photic/aphotic) Nitrogen and Phosphorous |
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Term
| Most likely limiting nutrient in marine systems |
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Definition
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Term
| Most likely limiting nutrients in freshwater systems |
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Definition
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Term
| What factors limit terrestrial primary production? |
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Definition
| Temperature, Moisture, Nitrogen and Phosphourous |
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Term
| Secondary production is a measure of |
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Definition
| Energy consumers get from their food |
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Term
| Each trophic level utilizes about how much total available energy? |
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Definition
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Term
| Why are there so few individuals at the top of a food chain? |
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Definition
| Cut down 10% rate, ecosystem runs out of energy chain, more energy efficent |
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Term
| How can marine ecosystems have smaller block for primary producers? |
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Definition
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Term
| Who eats more efficiently, a meat eater or a vegetarian? why? |
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Definition
| Shorter food chain more energy efficent |
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Term
| Most water vapor in the atmosphere comes from ________, but some also comes from _______ |
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Definition
| Evaporation from oceans, evapotransporation |
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Term
| Without burning fossil fuels, what returns carbon to atmosphere? |
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Definition
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Term
| Why cant photosynthesis keep up with fossil fuel burning? |
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Definition
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Term
| If most of the planets nitrogen is in the atmosphere, how does it become biologically available? |
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Definition
| Nitrogen fixing, bacteria in root nerves |
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Term
| How have humans altered the nitrogen cycle? |
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Definition
| Production of fertilizers |
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Term
| Plant use which form of nitrogen? |
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Definition
|
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Term
| What form of nitrogen do consumers use? |
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Definition
|
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Term
| Is denitrification good or bad for agriculture? |
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Definition
| Bad, it removes soil nitrogen |
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Term
| How have humans altered the phosphorous |
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Definition
| Fertilizers increase phosphorous |
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Term
| What mostly determines rate of nutrient cycling in the environ ment? |
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Definition
| Decomposition determines rate of nutrient cycling |
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Term
| How might deforestation affect nutrient cycles/ |
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Definition
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Term
| Why must fertilizers be continously added for agriculture? |
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Definition
| Agriculture removes nutrients add them back |
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