Title : ( Alpine soil properties are influenced by Dryas octopetala tannins )
Authors: Gallet C , Baptist F , Buffet M , Choler P , Clément J.C , Geremia R , Guillemin R , Martins J , Sage L , Bahar Shahnavaz , Zinger L ,
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Abstract
A multidisciplinary study was conducted to evaluate the influence of tannins isolated from a dominant and polyphenol rich alpine species (Dryas octopetala) on soil properties and activities. Tannins were isolated from Dryas leaves, and added to soil cores (kept at 0°C) from two contrasting edges of a mesotopographical gradient, ranging from snow-free, wind exposed crests to long-lasting snowbeds. Half of the samples underwent a freezing (–8°C) treatment during two weeks, and soil analysis were performed after two and six weeks. Tannin recovery was influenced by both soil origin and temperature (tannin disappear more rapidly in snow bed soil than in crest soil, and at 0°C than at –8°C). From 15 days at 0°C, increase in protocatechuic acid concentration indicated degradation processes, but no clear effect on soil respiration could be associated. Complementary investigations (DON, microorganism abundance and diversity) are in progress to assess tannin influence on soil activity.
Keywords
, Dryas octopetala, Alpine grasslands, tannin amendment
@inproceedings{paperid:1025584,
author = {Gallet C and Baptist F and Buffet M and Choler P and Clément J.C and Geremia R and Guillemin R and Martins J and Sage L and Shahnavaz, Bahar and Zinger L},
title = {Alpine soil properties are influenced by Dryas octopetala tannins},
booktitle = {XXIII th International Conference on Polyphenols},
year = {2006},
location = {Manitoba},
keywords = {Dryas octopetala; Alpine grasslands; tannin amendment},
}
%0 Conference Proceedings
%T Alpine soil properties are influenced by Dryas octopetala tannins
%A Gallet C
%A Baptist F
%A Buffet M
%A Choler P
%A Clément J.C
%A Geremia R
%A Guillemin R
%A Martins J
%A Sage L
%A Shahnavaz, Bahar
%A Zinger L
%J XXIII th International Conference on Polyphenols
%D 2006
