Marshes form where water is very close to, or above, the ground surface for part or most of the year. This results in a waterlogged environment that stays soggy even if there are no pools of standing water. Marshes are either features in their own right, or zones along the margin of a lake or a river's edge. In intertidal areas along the coast, salt marshes sometimes occur. Surprisingly, these are enormously biologically productive.
A marsh is a type of wetland that is dominated by herbaceous rather than woody plant species. Marshes can often be found at the edges of lakes and streams, where they form a transition between the aquatic and terrestrial ecosystems. They are often dominated by grasses, rushes or reeds. If woody plants are present they tend to be low-growing shrubs. This form of vegetation is what differentiates marshes from other types of wetland such as swamps, which are dominated by trees, and bogs, which are wetlands that have accumulated deposits of acidic peat.
Useful behaviours for this habitat
Ecozones where this habitat is found
Other Freshwater habitats
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