VII. Standing water ecosystems

A. Types

1. Most diverse of aquatic environments

2. No net flow of water through the system

3. Includes lakes, ponds, march, swamps, and bogs

B. Organisms

1. Usually have several layersa. Microscopic organisms are

plankton1. Phytoplankton use

photosynthesis2. Zooplankton do not

b. Also have pelagic fishc. Benthic fish along with

turtles feed on the bottom

C. Wetlands

1. Wetlands are areas where plant roots are submerged with water at least part of the year

a. Can be salt or freshwater, can even be flowing

2. Act as filters for chemicals and can be used for waste water

treatment

3. Act as a breeding ground for many animals

4. Being drained for development and other uses

5. Now are protected; to drain you must get government permission and you

must build a new wetland

D. Everglades1. Used to cover 160 Km being 2m at its deepest2. Have a wet and a dry season3. Drained for farming and travel4. Bird and reptile populations down

by 50%5. Now being restored, 100,000 acres

returneda. Still endangered but coming

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