
the fixation rate at which energy is fixed by plants.
Found on
http://en.wikipedia.org/wiki/Glossary_of_environmental_science

A measurement of plant production that is the start of the food chain. Much primary productivity in marine or aquatic systems is made up of phytoplankton, which are tiny one-celled algae that float freely in the water.
Found on
http://en.wikipedia.org/wiki/Glossary_of_fishery_terms

the productive capabilities of self-feeding organisms (Morris 1992).
Found on
http://imnh.isu.edu/digitalatlas/bio/glsry.htm

(from the article `ecology`) ...the concept of ecological niches and pyramids of numbers. In the 1930s, American freshwater biologists Edward Birge and Chancey Juday, in ... [8 related articles]
Found on
http://www.britannica.com/eb/a-z/p/112

The rate of carbon fixation by marine photosynthetic organisms (phytoplankton). Primary productivity results in the reduction of dissolved inorganic carbon to form organic carbon, with concomitant release of oxygen.
Found on
http://www.encyclo.co.uk/local/20130

The transformation of chemical or solar energy to biomass. Most primary production occurs through photosynthesis, whereby green plants convert solar energy, carbon dioxide, and water to glucose and eventually to plant tissue. In addition, some bacteria in the deep sea can convert chemical energy to biomass through chemosynthesis.
Found on
http://www.encyclo.co.uk/local/20945

A measurement of plant production that is the start of the food chain. Much primary productivity in marine or aquatic systems is made up of phytoplankton, which are tiny one-celled algae that float freely in the water.
Found on
http://www.translationdirectory.com/glossaries/glossary245.php

the fixation rate at which energy is fixed by plants.
Found on
http://www.translationdirectory.com/glossaries/glossary306.php

Gross primary productivity is the rate at which green plants and the few other producers (such as green algae) in an ecosystem produce biomass, including the biomass that they use themselves during respiration. Net primary productivity is the gross primary productivity minus the biomass that the producers use themselves; in other words, it is the r...
Found on
https://academy.allaboutbirds.org/bird-academys-a-to-z-glossary-of-bird-ter

See gross primary production and net primary production.
Found on
https://www.encyclo.co.uk/local/20128

Energy captured from the atmosphere through photosynthesis.
Found on
https://www.globalchange.gov/climate-change/glossary
No exact match found.