New Hampshire PBS
   share this page
NATUREWORKS!
Home     About     Watch     Nature Files     Teachers     Order DVD     Contact
 

Wetlands

   The Lowdown on Wetlands

WetlandsWetlands are found along rivers, lakes and in depressions. In fact, wetlands are associated with most lowland areas. Water in wetlands moves very slowly. Some wetlands are temporary and seasonal. They occur for a few weeks at a time and then disappear until they are refilled with water. Other wetlands are always under water.

   Soaking It Up
WetlandsWetlands are an important part of the environment. They help control flooding by soaking up water during storms. Wetlands also act as natural filters for water pollutants and they trap sediment that can clog rivers, streams and lakes. In fact, wetlands are often compared to kidneys because of their ability to clean up the water supply!
 
    Rest Stop
WetlandsWetlands are often used as resting places for migrating birds. Other animals, like fish and crabs, lay their eggs in wetlands. Young fish and crabs spend their early life in wetlands, where there is lots of cover from predators. When they grow older, they will move out to more open waters.
    Disappearing Wetlands
WetlandsAbout half of the wetlands that were in the United States two centuries ago are now gone. Most were drained and used for farmland or filled in so roads and towns could be built on them. This development has put a strain on species that depend on wetlands for survival. It is estimated that close to 35 percent of the animals and plants on the U.S. endangered or threatened species list depend on wetlands for at least part of their life cycle.
    Variety is the Spice of Life
Not all wetlands are the same. They all have unique characteristics!

button Bogs, Fens, and Pocasins
These three types of wetlands all have peat in them, but they are different in many ways.

button Prairie Potholes, Vernal Ponds, and Playas
When it rains, these wetlands come to life.

button Freshwater Marshes
Cattails, bulrushes and lots of wildlife make freshwater marshes dynamic ecosystems.

button Swamps
These forested wetlands are often found near rivers and lakes.




Advertisement: