Descri 'Pond as
an ecosystem
Answers
Answer:
A pond or lake ecosystem includes biotic (living) plants, animals and micro-organisms, as well as abiotic
(nonliving) physical and chemical interactions. Pond and lake ecosystems are a prime example of lentic
ecosystems. Lentic refers to stationary or relatively still water, from the Latin lentus, which means
sluggish.
A typical lake has distinct zones of biological communities linked to the physical structure of the lake.
(Figure below) The littoral zone is the near shore area where sunlight penetrates all the way to the
sediment and allows aquatic plants (macrophytes) to grow. Light levels of about 1% or less of surface
values usually define this depth. The 1% light level also defines the euphotic zone of the lake, which is
the layer from the surface down to the depth where light levels become too low for photosynthesizers.
In most lakes, the sunlit euphotic zone occurs within the epilimnion.