Journal
JOURNAL OF CHEMICAL ECOLOGY
Volume 29, Issue 7, Pages 1549-1564Publisher
KLUWER ACADEMIC/PLENUM PUBL
DOI: 10.1023/A:1024214528514
Keywords
recruitment; silver fir; soil moisture; phenolics; humus; phytosociology
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Concentrations of aliphatic acids, phenolic acid, and inorganic nutrients, as well as hormone-like activity, were determined in soil dissolved organic matter (DOM) from two forest sites in N Italy showing differing degrees of silver fir regeneration. In the site where silver fir recruitment was abundant, humification processes prevailed, and the soil DOM had a high content in aliphatic and phenolic acids. This enhanced the hormone-like activity in the soil, which could in turn promote growth of silver fir seedlings. In the site with poor fir recruitment, the soil DOM underwent rapid mineralization and was richer in inorganic nutrients, but had lower concentrations of aliphatic and phenolic acids, and lower hormone-like activity.
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