Invasive mucky sediment paves the way for invasive weeds
Over time foul dark mucky organic sediments accumulate on the lake bottom. The organics made up of dead and decaying leaves, aquatic weeds, algae etc that sink to the bottom of the lake where they decompose.
The obvious answer is that it is “yucky”. But there is a lot more to it than that.
Those black mucky sediments that are produced by the decomposition of organic material form a nutrient stockpile in the sediments.
That has several consequences
So decomposed sediment organics produce nutrients that nourish the growth of weeds and algae that then die off, fall to the bottom and decompose to form nutrients again. This nutrient recycling, when added to the annual additional organic loading due to leaves, agricultural and septic runoffs causes the depth of the nutrient stockpile in the sediments to increase every year. (Need a graphic)
Once we understand that the real problem is the recycling of nutrients; decomposed sediment organics produce weeds and algae that then die off, fall to the bottom and decompose to form nutrients again, it becomes obvious that the best way to make things worse is to promote nutrient recycling.
There are a number of ways to do this:
Herbicides quickly kill weeds so that the dead weeds fall to the bottom to decompose and perpetuate the nutrient recycling.
Algaecides quickly kill algae so that the dead algae fall to the bottom to decompose and perpetuate the nutrient recycling.
Such as alum that clear the water and precipitate phosphorus down into the sediment to perpetuate nutrient recycling.
Conventional Aeration raises dissolved oxygen levels in the upper layers of the water column, and because phosphorus precipitates out of the water at higher dissolved oxygen levels acts in much the same way as chemical precipitants by recycling phosphorus back into the sediment.
The difference is that chemical precipitation tends to retain phosphorus in the sediment a little longer, whereas in the absence of oxygen in anaerobic sediment phosphorus rapidly becomes dissolved in the water again.
SIS.bio’s remediation program does the following:
In this way, muck and sediment can be digested and eliminated and the water body can be restored to its original depth and health.