The reason the soil-leaf color connection wasn't made long ago is partly because Hoch's hypothesis was needed to put it into perspective. It also might be that many plant researchers were missing the forest for the trees.
"I think that most of the work has been done by biologists looking at production of anthocyanins in trees themselves," said Eppes. They hadn't stepped back and looked at patterns of tree color.
Eppes wants to follow up Habinck's study with a wider analysis of satellite data showing tree color which can be compared to geological maps of the types of soils over large portions of land.
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| Contact: Ann Cairns acairns@geosociety.org 303-357-1056 Geological Society of America Source:Eurekalert |