Aquatic Plants



The presence of aquatic plants is one of the best indicators of whether a lake or a stream will be a good producer of fish. Most aquatic life which fish feed upon requires these plants for food. Plants also provide a fishery with protective cover and life-giving oxygen.

Aquatic plants are classified into submerged, floating, and emergent varieties.

Aquatic Plants

Submerged plants are rooted on the waters bottom but do not extend all the way to its surface. Eel grass is an example of a submerged plant. Floating plants are not rooted and are free to move about the waters surface. Duckweed is an example of a floating plant. Emergent plants are rooted on the waters bottom and extend to its surface. The water lily is an example of an emergent plant.

The most important plant classes are the submerged variety because it allows an abundance of aquatic feed on the lake or streams bottom. It is also easier to fish than the other two because it produces less plant clutter and snags.

Plants require sunlight for growth and photosynthesis to occur. Plants are restricted to waters receiving sunlight. In most waters, a depth of ten to thirty feet is the limit that sunlight can penetrate. This means that plants are most abundant in the shallows and decrease in quantity as the water deepens. Shallow

Aquatic Plants

shorelines protected from floods and wave actions favor the most abundant growths.

In general there are three zones of aquatic plants. The first zone consists mainly of rooted plants with their tops distended to the surface air. These consist of emergent plants. They occur in depths from the edge of shorelines to about the six foot depth. Cattails, reeds, and others are common plants found in this first zone.

The second zone is made up of rooted plants which shelter floating portions on the surface. This zone is deeper than the first zone and spreads to about the ten foot depth. Water lilies and pond weeds are examples.

Aquatic Plants

The third zone lies in the deeper areas beyond the first two zones. It includes submerged plants such as eel grass, Anarcharis and others. This zone advances close to a ten foot depth. In very deep clear waters where sunlight can penetrate deeper this zone may extend to about the thirty foot depth. Large dense growths of submerged plants are frequented by feeding fish. Submerged plants the deeper areas are difficult to see and to determine their presence.

These three zones somewhat overlap. In areas of heavy currents, flood and wave action can dismantle

Aquatic Plants

plant growth and in some of these areas plants may be absent.

The most desirable plants to locate are the submerged growths of zone three. These support adequate depth for protective cover and an ample food supply.

Specific plants favor different aquatic life forms. Callibietis mayflies, dragonflies and damselflies are found in certain plants such as the submerged varieties. These insects are stalking and lie in wait to prey upon their victims.

Fish forage the aquatic plants looking for food. It is these plants that generate most of the fishes food supply.

Aquatic Plants


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