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Podzolization under Kauri (Agathis austails): for better or worse?

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Title Podzolization under Kauri (Agathis austails): for better or worse?
Period 09 / 2000 - 12 / 2006
Status Completed
Dissertation Yes
URL http://library.wur.nl/wda/abstracts/ab4084.html
Research number OND1308658

Abstract

Kauri (Agathis australis) is an endemic tree species of New Zealand belonging to the family of the Araucariaceae. Leaf and bark litter of kauri trees decompose slowly. Due to this slow decomposition under mature kauri trees, thick layers of litter and humus accumulate. It seems that the thick and acid organic layer leads to leaching and podzolization of the underlying soil, making the soil less fertile. Questions that we are working on are: * Do the high polyphenol contents result in a slower decomposition of the litter? * Do kauri seedlings survive on the litter cone and do seedlings of competing species survive? * Is kauri able to take up organic nitrogen and are competing species able to take up organic nitrogen?

Related organisations

Related people

Supervisor Prof.dr. F. Berendse
Co-supervisor Dr. W.G. Braakhekke
Project leader Dr.ir. E. Verkaik
Doctoral/PhD student Dr.ir. E. Verkaik

Related research (upper level)

Classification

A13000 Soil
C50000 Environmental studies
D15100 Geochemistry, geophysics
D22400 Ecology

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