Wetlands

Wetlands There are 2 types of environments on our planet: Terrestrial and aquatic Wetlands are the middle ground between the two. When flooded  more aquatic During dry periods  more terrestrial

Examples of wetlands

Marsh A marsh is an ecosystem that is no more than 2 m deep. Submerged plants: grow in the deepest zones. Most common is water milfoil which many aquatic species use its thin leaves for shelter and food. Floating plants: Float on surface of water. Most common is duckweed. Provides shelter for most insects and as food for ducks. Emergent plants: Take root in the mud and edge of the marsh. Cattails are examples of emergent plants and many species use them for shelter and food.

Function of marshes Marshes are often referred to as “Earth’s kidneys” because they work as filters. A marsh is able to filter water because water circulates through it very slowly. In marshes plants and micro-organisms capture pollutants. Some pollutants are deposited on the bottom of the marsh.

Food web A food web is a group of food chains, often interrelated, that makes up an ecosystem.

Adapting to the environment Adaptations have helped species reproduce and survive. Some adaptations are physical while some relate to the way the animal moves, feeds, reproduces or responds to climate

In class work P.86 Homework: P.83 “This way to the finish line”