Term
| What is meant by species distribution and abundance? |
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Definition
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| What determines the above? |
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Definition
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Term
| Predation and symbioses are _____ factors |
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Definition
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Term
| temperature and pH are ____ factors |
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Definition
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Term
| All ecosystems in geographical region make up a ____ |
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Definition
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Term
| Communities and their environments make up a |
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Definition
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Term
| Groups of individuals in an area make up a _____ |
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Definition
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| All in habited area make up a _____ |
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Definition
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Term
| How would we deal with a new insecticide according to the precautionary principle? |
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Definition
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Term
| About how many introduced species will successfully colonize a new area? |
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Definition
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Term
| What would likely limit distribution of a pollinator species? |
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Definition
| Begavior and habitat selection |
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Term
| What other biotic factors might limit distibution of a species? |
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Definition
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Term
| How does urchins limit distribution of seaweed? |
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Definition
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Term
| Most important factors in climate are: |
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Definition
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Term
| Why does temperate decrease from equator to poles? |
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Definition
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Term
| How do tropical and temperate zones differ? |
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Definition
Tropical = warm all year
Temperate = Seasons |
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Term
| What produces seasonal temperature changes in temperate zones? |
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Definition
| The tilt of Earth on axis (23) |
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Term
| Why are deserts often found at 30N and 30S |
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Definition
| Closest to sun and pickup |
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Term
| Why are temperate forests found between 30 and 60N and also between 30 and 60 S? |
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Definition
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Term
| Lond and Calgary both 51N. Why is winter in London wetter and warmer? |
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Definition
| England climate is moderate |
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Term
| Why dry biomes (desert, grasslands) east of Rocky mountains? |
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Definition
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Term
| In winter, what part of a lake is warmest? |
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Definition
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Term
| How do lake nutrients get distributed in Spring and Fall? |
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Definition
| Warm H2O from bottom rises by ocean/gulf stream |
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Term
| How do photic and aphotic zones differ? |
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Definition
| photic=light, aphotic=little light |
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Term
| Area of rapid temperature beyond photic zone is a? |
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Definition
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Term
| Where is the benthic zone, and where does food for benthic organisms come from? |
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Definition
| Floor, decaying organic matter above |
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Term
| Rank lake zones from most to least productive? |
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Definition
| Littoral,limnetic, profundal |
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Term
| How do oligiotrophic and eutrophic lakes differ? |
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Definition
Oligiotrophic lake is clear
Eutrophic is murky |
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Term
| How is an estuary defined? |
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Definition
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Term
| How is an estuary defined? |
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Definition
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Term
| Most of the ocean is this type of zone |
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Definition
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Term
| Communities in this marine zone are adapted to alternating submersion and exposure? |
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Definition
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Term
| Coral Reefs are in this zone |
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Definition
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Term
| Deepest parts of the ocean |
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Definition
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Term
| Major producers in deep sea hydrothermal vent communities: |
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Definition
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Term
| Major producer in deep sea hydrothermal vent communities: |
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Definition
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Term
| What is the major abiotic factor determining if an area will be grassland or forest? |
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Definition
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Term
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Definition
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Term
| Southern California is mostly this type of biome? |
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Definition
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Term
| Why do they have so many fires? |
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Definition
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Term
| Dominant animals in temperate grasslands? |
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Definition
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Term
| "Rainforests" of temperate zones: |
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Definition
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Term
| Why are plants short in tundra biomes? |
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Definition
| Permafrost, cant get roots downfar |
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Term
| 250 rabbits per 30 square miles is a reference to: |
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Definition
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Term
| If lion pride stays together as a unit, it's this type of dispersion: |
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Definition
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Term
| If oaks trees are irregularly and unpredictably found throughout a forest, it is this type of dispersion: |
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Definition
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Term
| Most elephants survive through old age, this type of survivorship: |
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Definition
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Term
| Most maple seeds will never grow into trees, this type of survivorship: |
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Definition
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Term
| Birds die at a uniform rate, this type of survivorship: |
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Definition
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Term
| When offspring survival is low, this type of reproduction may be an advantage: |
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Definition
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Term
| What type of conditions favor iteroparity? |
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Definition
| Stable environments, high competition |
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Term
| How do semelparity and iteroparity differ in parental care? |
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Definition
Semelparity = single reproduction
Iteroparity = multiple reproduction |
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Term
| Why would reproducing females have higher mortality rates? |
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Definition
| Using more energy, protect, provide food |
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Term
| What is ultimately being measured in population modeling? |
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Definition
| Change in pop/change in time |
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Term
| What do the variables r and N represent? |
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Definition
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Term
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Definition
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Term
| What type of growth occurs at this time? |
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Definition
| Imperical population growth |
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Term
| Why can't exponential growth be maintained? |
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Definition
| Carrying capacity (not enough resources) |
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Term
| Carrying capacity results in _____ growth |
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Definition
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Term
| What do we know of a bird population with wildly fluctuating population size? |
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Definition
| There are other factors, not just reproduction |
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Term
| What determines population size in a K selected species? |
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Definition
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Term
| What determines population size in an r selected species? |
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Definition
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Term
| If birth rate is denisty dependent, as population growth, birth rates will _______ |
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Definition
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Term
| Is density dependent or independent rate more common? |
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Definition
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Term
| How does high density limit population growth? |
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Definition
| Not a lot of room, food, resources |
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Term
| How are predator prey populations characterized? |
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Definition
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Term
| How are predator prey populations characterized? |
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Definition
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Term
| A wide base on a age structure diagram indicates: |
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Definition
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Term
| What shape is an age structure diagram in a zero growth country? |
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Definition
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Term
| how does the ecological footprint of the US compare to carrying capacity? |
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Definition
| We are using too much energy resources |
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