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In northeastern France, forest soils on old alluvial terraces are generally unfavourable, strongly acid and often characterized by superficial temporary water tables. In this case, the ground vegetation is dominated by a dense cover of Carex brizoides on the moderately hydromorphic soils (Carex site) or Molinia caerulea on the strongly hydromorphic soils (Molinia site). Both pedunculate and sessile...
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