IMG_0001_NEW_0003

IMG_0001_NEW_0003 - or grams/m'1year What controls primary...

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- Transformed to chemical energy by producers - Transferred through feeding interactions - Transformed to heat energy - Leaves the ecosystem as heat Energy flow primary production: Amount of light energy converted to chemical energy by autotrophs during a given time period Primary production Gross primary production (GPPI = Amount of light energy converted to chemical energy per unit time Net primary production (NPPI = Amount of light energy converted to chemical energy per unit time - Amount of chemical energy used by autotrophs in respiration Measured in: Joules/m'/year
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Unformatted text preview: or grams/m'1year What controls primary production? . Light limitation . Nutrient limitation . Nitrogen (particularlY on land) . Phosphorus (particularly in lakes) . tron (particularly in the sea) Energy flow Secondary production: The amount of chemical energy in consumers'food that is converted to new biomass during a given time period Production e{ficiency e.g. 1rtrd $av}{'l (^e{ W rruptV >qoJ-G w crrs-, SorTvst;)- loo1 {P 67J fen+ &.> What o/o of food energy is used for growth? ffir,@of : ft/" A,lrltr f%finrUh...
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