APES - Primary Productivity

Energy flow begins with…

producers/autotrophs

Producers and autotrophs convert…

solar energy into usable chemical energy

Herbivores…

consume the tissues of producers

Herbivores convert…

the energy from chemical compounds into energy (through cellular respiration)

Aneraobic respiration

Not using oxygen to convert energy

Primary productivity (PP)

The rate of converting solar energy into organic compunds

Gross primary productivity (GPP)

The measure of energy from the sun converted by photosynthesis

Net primary productivity (NPP)

The energy required for life functions of producers

Respiration can be calculated by…

(NPP) = (GPP) - respiration by producers (R)

GPP and NPP can be quantified as…

energy and biomass

Most productive ecosystem =

warm, wet, and bright ones