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Acorn production by Kashiwa oak in a coastal forest under fluctuating weather conditions

Masaka, K ; Sato, H

Canadian journal of forest research, 2002, Vol.32 (1), p.9-15 [Periódico revisado por pares]

Ottawa, Canada: NRC Research Press

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  • Título:
    Acorn production by Kashiwa oak in a coastal forest under fluctuating weather conditions
  • Autor: Masaka, K ; Sato, H
  • Assuntos: Agriculture ; Biological and medical sciences ; Breeding ; buds ; climatic factors ; coasts ; cold stress ; equations ; Forestry ; forests ; Fundamental and applied biological sciences. Psychology ; inflorescences ; mathematical models ; mortality ; Oak ; pollination ; Quercus dentata ; R&D ; Research & development ; seed productivity ; Seeds ; shoots ; Trees ; Weather
  • É parte de: Canadian journal of forest research, 2002, Vol.32 (1), p.9-15
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-1
    content type line 23
  • Descrição: We modeled the annual acorn crops of Kashiwa oak (Quercus dentata Thunb.) in a coastal forest in Hokkaido, northern Japan. Shoots of Kashiwa oak withered away during winter because of sea breeze and cold, and succeeding production of female inflorescences were strongly affected by mortality of buds. Thus, strong sea breeze and cold winters reduced the survival ratio of buds and further resulted in reduction of female flowering. Number of female flowers was related with current acorn crops, however, survival of female flowers after pollination was strongly influenced by warmth in the flowering period. Regression analysis of the annual acorn crop versus weather conditions suggests that acorn crop was decreased by cool conditions in the flowering period. A model equation was constructed to estimate the annual acorn crops by three weather variables: cumulative velocity of sea breeze and mean monthly temperature in winter (December-March) and maximum monthly temperature in current flowering period (June). This model equation explained 89.2% of observed acorn crops of Kashiwa oak in the coastal forest.
  • Editor: Ottawa, Canada: NRC Research Press
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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