The amount of organic material produced by organisms from inorganic material. Most of the primary production in the oceans is due to photosynthesis of phytoplanktonic algae. in the upper 100 m, i.e. the euphotic zone. See Fogg (1975).
See gross primary production and net primary production.
the rate at which plants produce organic matter through photosynthesis, generally expressed as net (all increase minus all decay)
the rate at which photosynthesis proceeds.
the rate at which photosynthesis (the manufacture of chemical energy by green plants) occurs per unit area in a given time period.
See gross primary productivity, net primary productivity.
the rate at which organic carbon is produced photosynthetically
The mass of organisms produced through photosynthesis per unit area and time by plants (i.e., primary producers). Click here learn more about primary productivity.
The rate at which biomass is produced per unit area by plants.
The products of photosynthesis, the primary conversion of the sun’s energy into chemical energy that can be stored as sugars or starches in plants. Net primary productivity is the amount of energy available after the plant has met its own energy needs.
Plant growth and the resulting increase in plant mass that occurs as part of the photosynthesis process. | F | G | | I | J | K | | Q | R | | | U | V | | X | Y | Z
the productive capabilities of self-feeding organisms (Morris 1992).
the conversion of light energy and carbon dioxide into living organic material by phytoplankton and other plants.
the growth of plants through photosynthesis. This term is used to describe the growth of phytoplankton in the ocean.
the rate at which organic material is synthesized from inorganic material through photosynthesis
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. Primary production refers to the amount of material produced. Net primary production is the measure of the actual accumulation of biomass after some of the products of photosynthesis (or chemosynthesis) are expended for the plant's own maintenance. Productivity, or the rate of production, is affected by various environmental factors, including the amount of solar radiation, the availability of water and mineral nutrients, and temperature.
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. Source: EPO.
The ability of a body of water to grow algae, measured as grams of carbon per square meter.
the amount of energy trapped by photosynthesis. This quantity determines how much life a region will support.
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.
the basis of all food chains, the production at the lowest level of the food chain...usually photosynthesis.
Synthesis of organic materials (biomass) by green plants using the energy captured in photosynthesis.