The respiration rate is a parameter which is used in ecological and agronomical modelling. In theoretical production ecology and aquaculture, it typically refers to respiration per unit of time (usually loss of biomass by respiration per unit of weight), also referred to as relative respiration rate. In theoretical production ecology, biomass is expressed as dry weight, in aquaculture as wet fish weight. The respiration rate is dependant of species, type of tissue or organ studied and temperature. Theoretical production ecology tries to quantatively study the growth of crops. ... Aquaculture is the cultivation of the natural produce of water (such as fish or shellfish, algae and other aquatic plants). ...
Respiration rate in theoretical production ecology
The respiration rate determines which proportion of the primary production can be invested in growth and harvest products and thus directly influences production figures. Global oceanic and terrestrial primary production, from September 1997 to August 1998. ...
Respiration is composed of four steps: 1) ventilation (or breathing), 2) gas exchange in the lungs, 3) circulation of blood between the lungs and tissues and, 4) gas exchange at between the blood and tissues.
During resting respiration, only a small portion (about one tenth) of the lung capacity is used.
Measurement of lung volumes and forced expiratory flow rates are useful in the clinical setting.
The rate is usually measured when a person is at rest and simply involves counting the number of breaths for one minute by counting how many times the chest rises.
Respirationrates may increase with fever, illness, and with other medical conditions.
Another study found that rapid respiratory rates in babies, counted using a stethoscope, were 20% to 50% higher than those counted from beside the cot without the aid of the stethoscope.
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