Wetlands:

Sci 6.3

• Land covered by water during some part of the year

Swamps:• Shrubs and trees mostly

Marshes:• Grasses, rushes, sedges

A type of rush

A type of sedge

Bogs*NOT stream-fed*Water is from precipitation*Soil often acidic, water-logged

*may be habitat for carnivorous plants

Wetlands are important! They help:1. trap sediments, keeping lakes and streams clear

2. remove nutrients, slowing eutrophication

3. prevent flooding

4. Provide habitats for many animals

Sewage treatment• Filters take out solids

• Chlorine/O3/UV kill bacteria