Re: [Killietalk] azolla (was duckweed)

[Wright Huntley <whuntley at verizon_net>]

Khai Wan wrote:

>I'm wondering having those plants that grow on the surface of the water, how would it affect the gas exchange? I would normally prefer those plants that is submerged in the water.
>  
>

My guess is that they increase surface area and actually may slightly improve gas exchange. 

Azolla is a wild plant, here in CA, and can be seen in huge, beautiful purple patches in the rivers and ponds of the gold-country foothills. It also does well here in the high desert, in our canals and the Owens River. It is lush green, earlier, but turns magenta when the weather cools.

It has never done well for me in aquaria, probably because it is less 
humidity tolerant than duckweed, Salvinia or Amazonian Frogbit. It may 
also need better light than I gave it. A pity, as it is quite pretty.

Wright

-- 
Wright Huntley - Rt. 001 Box K36, Bishop CA 93514 - whuntley at verizon_net  760 937-2276 (cell) 760 874-2000 (CA) or 941 866-0500 (FL).

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