Étude des caractéristiques écologiques des peuplements mélangés Chêne sessile - Chêne pédonculé et de leur structure spatiale intra et inter-spécifique, en relation avec les facteurs environnementaux

Abstract : The aim of the study is (1) to identify ecological factors that determine the presence of mixed oak stand in North East from the IFN database; and (2) to characterize Quercus petraea and Quercus robur spatial structure in a natural regeneration and to compare different measurement methods (quadrat method, line intersect method and nearest neighbor method). Models of probability of presence have the same set of explanatory variables for mixed and for pure stands. The most important variables are permanent flooding, temporary flooding and pH. The model for mixed stands is close to a model obtained by multipliying the two specific (pure stand) models. In the regeneration plot, pedunculate oak was the most abundant species and sessile oak showed an aggregate distribution that depended from pedunculate oak distribution. Weak or no correlations with environmental factors (canopy closure, waterlogging) were observed. Finally, a strategy to characterize seedling distribution in mixed oak regenerations is proposed.
Document type :
Master thesis
File URL :
http://docnum.univ-lorraine.fr/prive/BUS_M_2013_THENOT_MICKAEL.pdf
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https://hal.univ-lorraine.fr/hal-01778345
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Submitted on : Wednesday, April 25, 2018 - 3:52:57 PM
Last modification on : Thursday, April 26, 2018 - 1:15:53 AM

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Mickaël Thénot. Étude des caractéristiques écologiques des peuplements mélangés Chêne sessile - Chêne pédonculé et de leur structure spatiale intra et inter-spécifique, en relation avec les facteurs environnementaux. Sciences de l'environnement. 2013. ⟨hal-01778345⟩

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