Somewhat of a summary.
Low water + low inorganic sediment inflow (drought) = increased sunlight penetration to bottom substrate.
Increased sunlight penetration to substrate means ideal conditions for submergent vegetation.
Significant growth of agressive submergent vegetation means decreased available nutrients available for single celled algae.
Decreased amount of single celled algae means increased clarity.
Increased clarity means perpetuation of the rooted vegetation (the vicious cycle completed)
An entire pond of sago pondweed = mad landowners.
OK, so when the drought ended the next spring, why didn't the sago re-emerge?
