It is usually somewhat turbid, which helps control algae blooms and aquatic weeds.

The presence of aquatic weed along the lake and within the tributaries has resulted in even greater detriment to local human health.

When flooding began again, muck and smothering aquatic weeds were flushed out.

As a bonus, the swans also eat the lake's bothersome aquatic weeds and water insects.

It is known as an aquatic weed in some regions.

One interesting potential source of energy in the Third World is the water hyacinth and other aquatic weeds.

It usually perches on tall aquatic weeds or bare ends of shrubs.

It also feeds upon Salvinia minima, a similar but less dramatic aquatic weed.

In the larger rivers they found aquatic weeds and lily stems beneath the surface of the water.

This alga is an introduced species and a noxious aquatic weed in Hawaii.