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[permaculture] Floating Gardens (wide shade trees)
Paul, you wrote:
What would be the impact of a floating swamp garden on the oxygen exchange
in the water?
Here's the beginning of an answer:
In addition to the gaseous exchange of the plants in a floating swamp
garden, which could vary depending on species, partial shading of a pond, by
anything, causes movement and additional oxygenation of the water.
Cool water in the shaded areas flows to the bottom, surface water is
drawn into the shaded area to replace it, etc. In this way much more of the
water in the pond comes into contact with the air than in a pond in which all of
the water is exposed to sunlight or is shaded.
Thes floating gardens also mean that much more edge, that many more bugs for
the trout, etc.
I hope this is useful.
David Edge
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