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[APD] RE: allelopathic thoughts

Tom provided strong arguments against the significance of allelopathy in
"competition" between plants and algae. Let's look at this problem from a
different angle. Maybe it's not about something that healthy plants leach
but about something that they don't? High availability of light and CO2
promotes fast photosynthesis, but plants need sufficent amount of all those
micro and macronutrients to utilize synthetised carbohydrates and to convert
them to aminoacids, proteins etc. Nutrient deficiency can also impair uptake
and/or utylization of other nutrients. It may lead to a leach of DOC and
absorbed nutrients to the water column thereby promoting algae growth. It
would make sense if algae has the ability to assimilate simple organic
compounds such as aminoacids, carbohydrates etc. from the water column. Can

Marcin Baranowski
Bialystok, Poland

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