The off shore areas may be called the pelagic zone, the photic zone may be called the limnetic zone and the aphotic zone may be called the profundal zone. Inland from the littoral zone, one can also frequently identify a riparian zone which has plants still affected by the presence of the lake—this can include effects from windfalls, spring ...

The photic zone extends downward to the depth of 1% light penetration; all primary producers and most heterotrophic animals live within this zone. Areas below these depths are variously called the aphotic or profundal zone (the latter often in reference to benthos).

Lentic waters are generally divided into three zones or sub-habitats: littoral, limnetic, and pro-fundal. A small pond may consist entirely of littoral zone. However, a deep lake with an abruptly sloping basin may possess an extremely reduced littoral zone.

Profundal Zone. Below the depth of effective light, beneath the thermocline, lie the profundal waters. Here, diversity and abundance of life are influenced by oxygen and temperature. The organisms depend upon the rain of organic material from the layers above as their energy source.

The third zone of lentic system encompass bottom layers towards the benthic zone underneath the limnetic zone, called profundal zone. This zone is comparatively cooler year round, dimly-lit and houses various heterotrophs and scavengers.

Lentic ecosystems are those whose water is still, and are made up of ponds, marshes, ditches, lakes and swamps. These ecosystems range in size from very small ponds or pools that may be temporary, to large lakes. Lakes and ponds are broken down into three different zones, each with its own different society of organisms. The littoral zone is ...

Profundal Zone lies below the depth of effective light and beneath the thermocline where aquatic life is influenced by oxygen and temperature.

Lentic ecosystems (pools, ponds, swamps, bogs lakes, etc.) vary considerably in physical, chemical and biological characteristics. In general, they have different zonation, unlike the

One common system divides lakes into three zones. The first, the littoral zone, is the shallow zone near the shore. This is where rooted wetland plants occur. The offshore is divided into two further zones, an open water zone, and a deep water zone.

2024年8月25日 · Profundal Zone: Deep water area with low light and no plants. Inhabited by decomposers and some fish adapted to low oxygen levels. Water Residence Time: Long (average 10 years). Flow Velocity: Low (0.001 to 0.01 m/s). Thermal Stratification: Present due to density differences caused by temperature variations.