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28 Cards in this Set
- Front
- Back
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Name three concerns of the envirnoment.
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1)climate increases 5 degre C by 2100
2)6.4 billion people 3)extinction rate increased by humans |
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Define Natural
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existing in nature
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Define resources
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needs
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Define policy
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rules or laws
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Define preservation
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nature can't perserve, parks, etc
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Define conservation
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management or preservation
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Define exploitation
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over harvested
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What the three types of resources?
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Renewable, nonrenewable, and perpetual
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What are renewable and nonrenewable resources?
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Renewable: regrows in human time scale
nonrenewable: regrows beyong human time scale |
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Name three perpetual resources
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Sun, wind and thermal heat
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Finish this quote:
"To keep every cog and wheel is the....." |
the first percation of intelligant tinkering
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Name three renewable resources
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forests (timber), crops, fish
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Name three nonrenewable resources
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diamonds, fossil fuels, salt
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What is a keystone speciess?
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Loss of this species means a loss of many others
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Describe biotic potential
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max. reproductive rate
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What doess the biotic potential relay on?
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biotic and abiotic factors also desnity independent or dependent factorss.
Ability to find food- biotic favorbale temp.-abotic |
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describe density dependent factors
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orgnaisms that increase or decrease in population size due to density of population like compeitition and predation
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descsribe density independent factors?
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populations affect by cold spells, storms no matter the population size
-tend to be organisms with short lives |
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The sigmoid curve shows...
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explosive phase after inital establisshment, eventually population will reach equilibrium phase
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What is primary sucession?
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area with no previsously occupied organisms
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What is the primary nutrient limiting growth in terrestrial ecosystems?
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nitrogen andd phospshorus
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Nitrogen is nessary for what?
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cholorphyll in plants, DNA, RNA, insulin
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In the age structure diagram what ages show rapidly growing populations?
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current growth ages 16-45
future growth ages 1-15 |
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eight items about photosynthesis
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sun, CO2, water, photosynthesis, sugars, O2, inorganic minerals for nutrients and plant tissues growth
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wildlife terms
population births deaths (now turn them into forestry or fisheries) |
stock
growth mortality |
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SY is called what in:
wildlife fisheries forestry |
harvestable surplus
total allowable catch total allowable cut |
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A good land steward keep...."
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keeps all the parts
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To be sustainable we must
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-reduce dependence on nonrenewable materials
-harvest renewable resource no faster than they grow -produce waste no faster then nature can break them down |
