Carbon cycle and climate change

Scientists from Queen Mary, University of London found out that emission of CO2 is higher in marine and freshwater mediums than that in ground eco-systems.
In the biggest analysis of respiration* indicators (process of producing carbon dioxide in carbon cycle) scientists researched the dependence from carbon cycle temperatures in marine and freshwater mediums.
Lead author, Doctor Gabriel Ivon Durocher, explained the essence of research: “In carbon cycle, during the process of photosynthesis, plants absorb CO2, while respiration of animals brings CO2 back into atmosphere. Understanding of how levels of respiration of all eco-systems react to the change of temperature will be essentially important in further forecasting of climate changes”.
Analyzing annual indicators of respiration in eco-systems all over the world, researchers noticed, that marine and freshwater eco-systems react more to temperature changes than ground eco-systems do.
“Respiration has a higher “activation energy” than photosynthesis has. That means it grows higher with the rise of temperature.  For a long time CO2 fixed by photosynthesis limit the respiration on Earth. Many marine and freshwater eco-systems receive additional CO2 from ground and precipitations. Presence of additional CO2 tells that respiration in marine and freshwater eco-systems is not limited by photosynthesis and has a greater influence on temperature than that in ground systems“, - Doctor Ivon Durocher explains.
“This conclusion shows that marine eco-systems have a greater potential for emission of CO2 into atmosphere in context of rising temperatures”.
Authors of the research warn that there are a great number of other factors that should be mentioned in analysis of connection between climate changes and carbon cycle.
“In perspective, this research will help to characterize a temperature sensibility of key formations inside eco-systems in order to make climate change forecasts more accurate”.  {jcomments on}