Term
Describe the four parts of an ecosystem
how are they linked? |
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Definition
1. Abiotic environment
2. Primary Producers
3. Consumers
4. Decomposers
linked by the movement of energy |
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Term
| What limits productivity in terrestrial ecosystems? |
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Definition
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Term
| What limits productivity in Marine Ecosystems? |
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Definition
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Term
| What is the Net Primary Productivity? |
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Definition
| amount of energy available to make new offspring |
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Term
| What two things do producers and consumers do with the energy they receive? |
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Definition
1. Maintenence
2. Growth/reproduction |
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Term
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Definition
| Mass of a living thing, includes energy |
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Term
What are the three kinds of consumers?
in order of who eats who
example: top one eats second, second eats third |
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Definition
1. Tertiary consumer
2. Secondary Consumer
3. Primary Consumer |
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Term
| What do decomposers feed on? |
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Definition
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Term
| What connects trophic levels? |
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Definition
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Term
| Does marine or terrestrial ecosystems consume more NPP? |
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Definition
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Term
What type of mammals are more efficient at producing biomass?
endotherm or ectotherm?
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Definition
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Term
Describe Top-down control
what can it cause? |
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Definition
when a consumer limits a prey population
can cause a Trophic Cascade:
-when top-down control affects links in a food chain |
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Term
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Definition
| Persistant Organic Pollutant |
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Term
| Describe Biomagnification |
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Definition
| increase of POP's at higher levels in food chain |
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Term
| Where is NPP higher on land or ocean? |
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Definition
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Term
Where is NPP highest on land?
Lowest? |
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Definition
wet tropics
deserts and artic regions |
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Term
Where is NPP highest in marine ecosystem?
Lowest? |
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Definition
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Term
| What is a Biogeochemical cycle? |
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Definition
| path that an element takes through a system |
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Term
| Describe Soil Organic Matter |
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Definition
| mixture of partially and fully decomposed ditritus |
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Term
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Definition
| completely decayed organic matter |
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Term
| What completes nutrient cycle? |
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Definition
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Term
| What are the 2 factors that influence decomposition? |
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Definition
1. Abiotic conditions
-warm, moist
2. Quality of Detritus
-high in nitrogen, low in lignin |
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Term
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Definition
Net Primary Productivity
energy put into reproducing, includes putting energy into offspring |
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Term
| Describe Gross Primary Productivity |
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Definition
| total amount of photosynthesis in a given area during a given time period |
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