10-2 NOTES: ENERGY TRANSFER PP

In an ecosystem energy flows: Sun  autotrophs  heterotrophs producers consumers

PRODUCERS/AUTOTROPHS Can make their own food through photosynthesis or chemosynthesis

PRODUCERS/AUTOTROPHS Productivity: energy made by producers (after biological processes) available to consumers

MEASURING PRODUCTIVITY Gross primary productivity (GPP): rate at which producers capture energy in organic compounds

MEASURING PRODUCTIVITY Net primary productivity (NPP): the rate at which biomass accumulates (after some is used) NPP= GPP – Cellular Respiration

Biomass: the amount of organic (living) material produced MEASURING PRODUCTIVITY

CONSUMERS Get energy by eating other organisms (5 types)

CONSUMERS Get energy by eating other organisms Herbivores: eat producers

CONSUMERS Herbivores: eat producers Carnivores: eat other consumers

CONSUMERS Herbivores: eat producers Carnivores: eat other consumers Omnivores: eat producers and consumers

CONSUMERS Detritivores: feed on “garbage” or dead organic matter (ex. Worms, vultures)

CONSUMERS Decomposer: break down dead organic matter into simpler molecules  Recycle nutrients back into ecosystem!

CLASS WORK Consumer 4-Squares