Whether anammox or denitrification is responsible for most nitrogen loss in the ocean, it is clear that anammox represents an important process in the global nitrogen cycle. Figure 6: Chemical reaction of anaerobic ammonia oxidation (anammox). © 2010 Nature Education All rights reserved.
http://www.nature.com/scitable/knowledge/library/the-nitrogen-cycle-processes-players-and-human-15644632
Organic N that is present in soil organic matter, crop residues, and manure is converted to inorganic N through the process of mineralization. In this process, bacteria digest organic material and release NH 4 + -N. Formation of NH 4 + -N increases as microbial activity increases.
http://www.extension.umn.edu/agriculture/nutrient-management/nitrogen/understanding-nitrogen-in-soils/
Although nitrogen is very abundant in the atmosphere, it is largely inaccessible in this form to most organisms. This article explores how nitrogen becomes available to organisms and what changes in nitrogen levels as a result of human activity means to local and global ecosystems.
http://www.nature.com/scitable/knowledge/library/the-nitrogen-cycle-processes-players-and-human-15644632
Nitrogen in the NH 4 + -N form is not subject to this loss. Management alternatives are available if denitrification losses are a potential problem. Significant losses from some surface-applied N sources can occur through the process of volatilization. In this process, N is lost as ammonia (NH3) gas.
http://www.extension.umn.edu/agriculture/nutrient-management/nitrogen/understanding-nitrogen-in-soils/
Only when nitrogen is converted from dinitrogen gas into ammonia (NH 3) does it become available to primary producers, such as plants. In addition to N 2 and NH 3, nitrogen exists in many different forms, including both inorganic (e.g., ammonia, nitrate) and organic (e.g., amino and nucleic acids) forms.
http://www.nature.com/scitable/knowledge/library/the-nitrogen-cycle-processes-players-and-human-15644632
Nitrogen is one of the primary nutrients critical for the survival of all living organisms. It is a necessary component of many biomolecules, including proteins, DNA, and chlorophyll.
http://www.nature.com/scitable/knowledge/library/the-nitrogen-cycle-processes-players-and-human-15644632
Atmospheric N is the major reservoir for N in the N cycle (air is 79% N 2 gas). Although unavailable to most plants, large amounts of N 2 can be used by leguminous plants via biological N fixation.
http://www.extension.umn.edu/agriculture/nutrient-management/nitrogen/understanding-nitrogen-in-soils/
Nitrification is the process that converts ammonia to nitrite and then to nitrate and is another important step in the global nitrogen cycle. Most nitrification occurs aerobically and is carried out exclusively by prokaryotes.
http://www.nature.com/scitable/knowledge/library/the-nitrogen-cycle-processes-players-and-human-15644632
Denitrification is a process by which bacteria convert NO 3 - -N to N gases that are lost to the atmosphere. Denitrifying bacteria use NO 3 - -N instead of oxygen in the metabolic processes. Denitrification takes place in waterlogged soil and with ample organic matter to provide energy for bacteria.
http://www.extension.umn.edu/agriculture/nutrient-management/nitrogen/understanding-nitrogen-in-soils/
Nitrogen exists in the soil system in many forms and changes (transforms) very easily form one form to another. The route that N follows in and out of the soil system is collectively called the nitrogen cycle (Figure 1). The nitrogen cycle is biologically influenced.
http://www.extension.umn.edu/agriculture/nutrient-management/nitrogen/understanding-nitrogen-in-soils/
which cycle includes bacteria taking gas from the atmosphere and converting it into a material that plants can absorb through root systems
Nitrogen cycle includes bacteria taking gas from the atmosphere and converting it into a material that plants can absorb through root systems. The nitrogen cycle includes bacteria taking gas from the atmosphere and converting it into a material that plants can absorb through root systems.