Could someone give a concise and easy to understand description of the mandatory parts of an aquatic ecosystem? Phil, Tom?
What is the role of algae in a natural ecosystem? Is the presence of algae a sign of an unhealthy ecosystem? How often healthy aquatic ecosystems don't have any algae or have very little algae?
--Nikolay
What is the role of algae in a natural ecosystem? Is the presence of algae a sign of an unhealthy ecosystem? How often healthy aquatic ecosystems don't have any algae or have very little algae?
--Nikolay