Total amount of abiotic energy captured by primary producers within specific environments.

More specifically, this is either inorganic compounds that are available to either photoautotrophs or chemoautotrophs and which these primary producers capture as chemical energy.

See also primary productivity and contrast with net primary productivity.

Gross primary productivity represents those energy stores that are available first to the producer that captured them and then to any that are able to, well, consume those producers or otherwise access their