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Wetlands Project Grade 5 LES
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By Nathaniel the Great
Most bogs are commonly found in the entire northern hemisphere in previously
glaciated areas.
Mostly the arctic and sub-arctic regions.
Bogs are characterized by substantial peat accumulation (<40 cm)
Bogs are covered with a layer of floating vegetation which may look like solid
ground.
Bogs have high water tables and acidic loving plants.
In bogs they can look cool. But parts of the bogs can be dangerous to mankind. Bogs are covered with a layer of floating vegetation which can trick the human eyes which would make you think that it would be solid ground.
The acidity of a bog is a pH of 3.5- 4.3 which I would find VERY acidic. Bogs are not a place to play around in.
Valley BogsThese develop in gently sloping valleys or hollows. A layer of peat fills the deepest part of the valley, and a stream may run through the surface of the
bog. Valley bogs may develop in relatively dry and warm climates, but because they rely on ground or surface water, they only occur on acidic substrates
Raised bogThese develop from a lake or flat marshy area, over either non-acidic or acidic substrates. Over centuries there is a
progression from open lake, to marsh and then (or on acidic substrates, valley bog), as silt or peat fill the lake. Eventually peat builds up to a level where the land surface is too flat for ground or surface water to reach the center of the wetland.
This part therefore becomes wholly rain-fed and the resulting acidic conditions allow the development of bog (even if the substrate is non-acidic). The bog continues to
form peat, and over time a shallow dome of bog peat develops: a raised bog. The dome is typically a few meters
high in the center, and is often surrounded by strips of fen or other wetland vegetation at the edges or along stream sides,
where ground water can percolate into the wetland.
THIS IS A VALLEY BOG AS PREVIOUSLY EXPLAINED
This is a blanket bog. It has not been explained.
This is a raised bog.
These develop from a lake or flat marshy area, over either non-acidic or acidic substrates.
This is a quaking bog. I have no information about this kind of bog due to space issues.