Primary producers

As producers are called autotrophic organisms in ecology, energy-rich biomass from inorganic compounds win ( primary production ). In addition to the green plants, which operate through photosynthesis primary production, there are organisms that use chemical reactions as an energy source ( chemosynthesis ).

Photoautotrophy

The photoautotrophic primary producers are mostly plants. Through photosynthesis, they produce sugar from water, carbon dioxide using light energy. A portion of the sugar they use in cellular respiration as an energy source for the further development metabolism. Another part of the sugar they use as raw material for the synthesis of more complex components of the biomass, ie mainly of proteins, fats and nucleotides (ATP, DNA). To do this, take on other chemical compounds, such as phosphate, nitrate and sulfate, etc., to incorporate nitrogen, phosphorus, sulfur into the biomass.

In stagnant waters assume the role of primary producers preferred an algal plankton. These include the components belonging to the bacteria blue-green algae. On special habitats are used as primary producers in front of others to a more primitive form of photosynthesis viable bacteria.

Chemoautotrophie

For example, in the deep sea or in low light, but supplied with high-energy inorganic compounds sites there are also producers who can produce with the help of chemical energy through chemosynthesis biomass.