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Originally Posted by Michaelangelica
The presentation has nice pics. but is a bit light on detail
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I posted the link only because some of the pictures tell us more than a thousand words could. For the words, see Hecht & Posey quoted several pages above, or Hecht in
Amazonian Dark Earths.
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Do you know the relative amounts of charcoal in mulata and preta?
(preta is for every 1 meter of depth of soil, is between 147 and 506 tonnes of charcoal per hectare)
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According to Kampf et al in
Amazonian Dark Earths the median soil organic carbon of preta is 36.7 g kg-1 and of mulata is 21.0 g kg-1. To convert your units, they give preta's min and max as 24 and 98 g kg-1. I can't find a figure for actual charcoal.
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Could you please explain?
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No. But if you google "immunoreactive protein assay" you can see how standard it is. There are several kinds of assay, and my understanding is that immunoreactive glomalin is only a part of total glomalin and indicates more recently formed stuff, which helps to work out turnover rates. To me this also says that glomalin must be a catch-all word for something whose true detailed composition has yet to be determined.
M
