Memoirs of the Manchester Literary and Philosophical Society, Volumes 104-106Manchester Literary and Philosophical Society., 1961 |
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Page 27
... Betula , Corylus , Quercus and Ulmus . The boundary between Zone VI and Zone VII is drawn where the Pinus percentages begin to fall rapidly accompanied by the beginnings of a rise in the Alnus , Ulmus and Quercus values . At this level ...
... Betula , Corylus , Quercus and Ulmus . The boundary between Zone VI and Zone VII is drawn where the Pinus percentages begin to fall rapidly accompanied by the beginnings of a rise in the Alnus , Ulmus and Quercus values . At this level ...
Page 28
... Betula and Fraxinus extend first , then Betula falls as Quercus , Ulmus and Corylus rise . ( v ) A 125-80 cm . B 80-40 cm . Incomplete herbaceous dominance with high values of Plantago . Cereal - type ( criterion 60 μ ) and Humulus ...
... Betula and Fraxinus extend first , then Betula falls as Quercus , Ulmus and Corylus rise . ( v ) A 125-80 cm . B 80-40 cm . Incomplete herbaceous dominance with high values of Plantago . Cereal - type ( criterion 60 μ ) and Humulus ...
Page 31
... Betula nana and Empetrum at the Zone III - IV transition represent the transition between the open vegetation of the ... Betula was suppressed , possibly through its inability to regenerate with an undergrowth of hazel . As the ...
... Betula nana and Empetrum at the Zone III - IV transition represent the transition between the open vegetation of the ... Betula was suppressed , possibly through its inability to regenerate with an undergrowth of hazel . As the ...
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