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All wetlands are considered freshwater ecosystems.
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False.
Wetlands are not all freshwater. “Wetland” describes areas saturated by water long enough to support distinct soils and vegetation, but that water can be fresh, brackish, or saline. Common categories:
- Freshwater wetlands: marshes, swamps, bogs, fens, riparian wetlands (salinity < ~0.5 ppt). Example: many inland marshes and peat bogs.
- Brackish wetlands: estuaries and some tidal marshes where freshwater mixes with seawater (salinity roughly 0.5–30 ppt).
- Saline/marine wetlands: coastal salt marshes, mangrove forests, tidal flats (salinity similar to seawater, ~30–35 ppt).
So the correct view is that wetlands form a salinity gradient from freshwater through brackish to marine.
Wetlands are not all freshwater. “Wetland” describes areas saturated by water long enough to support distinct soils and vegetation, but that water can be fresh, brackish, or saline. Common categories:
- Freshwater wetlands: marshes, swamps, bogs, fens, riparian wetlands (salinity < ~0.5 ppt). Example: many inland marshes and peat bogs.
- Brackish wetlands: estuaries and some tidal marshes where freshwater mixes with seawater (salinity roughly 0.5–30 ppt).
- Saline/marine wetlands: coastal salt marshes, mangrove forests, tidal flats (salinity similar to seawater, ~30–35 ppt).
So the correct view is that wetlands form a salinity gradient from freshwater through brackish to marine.
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