Natural eco-systems

It is noteworthy that rates of corrosion in the field are often much higher than those in the laboratory with pure cultures. This emphasises the complexity of natural eco-systems . 

To this point we have looked to the past to understand the changing relations between biodiversity and biogeochemisry. Recently, there has been considerable research into the role of species richness in ecosystem functioning, including biogeochemistry. There have been explicit experiments on this issue as well as observations on the impact of addition and deletion of species on natural eco.systems. 

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