Influence of stem flow on the representation of pollen of tilia europaea in soils
Keatinge, T.H.
Grana 21(3): 171-174
1982
ISSN/ISBN: 0017-3134Accession: 005692513
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Summary
The pollen distribution in mineral soil in woodland containing Tilia .times. europaea L. was studied to explain abnormally high percentages of Tilia pollen present in some podzol profiles. A greater concentration of pollen containing greater proportions of Tilia pollen occurred in a narrow zone (.apprx. 30 cm) around the trunk of Tilia trees than in the soil further from the trunk. This is attributed to the effect of stemflow concentrating pollen and possibly increasing the preservation of pollen at the trunk base. The percentages of Tilia pollen were similar to the abnormally high values from the podzol profiles. These profiles may mark the precise locations of trees in an earlier woodland. The implications of this to the interpretation of soil pollen diagrams are discussed.