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Regional and local (road verge) effects on size and fecundity in Banksia menziesii
Authors:BYRON B LAMONT  VICTORIA A WRITTEN  E T F WITKOWSKI  ROSEMARIE G REES  NEAL J ENRIGHT
Abstract:Abstract Banksia menziesii is a tree at the mesic end (Swan Coastal Plain) of its range and a shrub at the xeric end (Eneabba Plain). Plants at the xeric end produced, on average, as many cones, set 2.3 times as many seeds and stored 8.8 times as many viable seeds in the crown, as those at the mesic end. Plants on road verges had, on average, 2.5 times larger crowns than those at least 50 m further from the road. Road edge plants produced, on average, 2.5 times as many cones, set 3.1 times as many seeds and stored 3.7 times as many viable seeds as non-edge plants. Greater fecundity at the xeric end, including the road verges, could help offset the greater incidence of adult deaths and the reduced likelihood of seedling recruitment after fire at Eneabba.
Keywords:Banksia menziesii  climatic gradient  fire  plant demography  population structure  resource enhancement  seed bank dynamics
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