Editing Marsh (section)

==Basic information==
[[File:Water Lily - geograph.org.uk - 483063.jpg|thumb|upright=0.9|right|[[Nymphaea alba|White water lilies]] are a typical marsh plant in European areas of deeper water.]]
[[File:Xanthocephalus xanthocephalus -100 Mile House, British Columbia, Canada -male-8.jpg|thumb|upright=0.9|right|Many kinds of birds nest in marshes; this one is a [[yellow-headed blackbird]].]]

Marshes provide a habitat for many species of plants, animals, and insects that have adapted to living in flooded conditions or other environments.<ref name="Keddy, P.A 2010"/> The plants must be able to survive in wet mud with low oxygen levels. Many of these plants, therefore, have [[aerenchyma]], channels within the stem that allow air to move from the leaves into the rooting zone.<ref name="Keddy, P.A 2010"/> Marsh plants also tend to have [[rhizome]]s for underground storage and reproduction.  Common examples include [[Typha|cattails]], [[sedges]], [[Cyperus papyrus|papyrus]] and [[Cladium|sawgrass]]. Aquatic animals, from fish to [[salamander]]s, are generally able to live with a low amount of oxygen in the water. Some can obtain oxygen from the air instead, while others can live indefinitely in conditions of low oxygen.<ref name="Rafferty" /> The [[pH]] in marshes tends to be neutral to [[alkaline]], as opposed to [[bogs]], where peat accumulates under more acid conditions.