Sequestration of soil nitrogen as tannin-protein complexes may improve the competitive ability of sheep laurel (Kalmia angustifolia) relative to black spruce (Picea mariana).

@article{Joanisse2009SequestrationOS,
  title={Sequestration of soil nitrogen as tannin-protein complexes may improve the competitive ability of sheep laurel (Kalmia angustifolia) relative to black spruce (Picea mariana).},
  author={Gilles D. Joanisse and Robert Lee Bradley and Caroline M. Preston and Gary Douglas Bending},
  journal={The New phytologist},
  year={2009},
  volume={181 1},
  pages={
          187-198
        }
}
The role of litter tannins in controlling soil nitrogen (N) cycling may explain the competitive ability of Kalmia relative to black spruce (Picea mariana), although this has not been demonstrated experimentally. Here, the protein-precipitation capacities of purified tannins and leaf extracts from Kalmia and black spruce were compared. The resistance to degradation of tannin-protein precipitates from both species were compared by monitoring carbon (C) and N dynamics in humus amended with protein… CONTINUE READING
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