Question and answer. Which organisms, freshwater or marine are more involved in improving water quality?

Question and answer.

Which organisms, freshwater or marine are more involved in improving water quality?

http://5bio5.blogspot.com/2014/01/question-and-answer.html

See the answer(s) at
https://www.researchgate.net/post/Which_organisms_freshwater_or_marine_are_more_involved_in_improving_water_quality

The freshwater and marine ecosystems are far from being identical.

The answer is: both groups of organisms are equally involved, and both groups are very important. More detail see below.

A series of papers (see the links at the end of this answer) developed
a new vision of how biodiversity helps towards better stability and water quality, in other words, how biodiversity is involved in the ecosystem services. In these papers, the fundamentals of a new conceptualization and synthetic theory of the multi-functional role of aquatic organisms in water self-purification, in improvement of water quality were formulated:
Key papers:
http://www.scribd.com/doc/60659939/;
http://www.scribd.com/doc/52627327/2H469p203-Polyfunctional-role-w-Addendum; http://www.scribd.com/doc/48099028/;