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Norway spruce

Geographical variation in crown density for oak between 2000 and 2005. White circles show the locations of plots, and figures within the circles are mean crown densities (%). Some plots are too close to be distinguished individually. The value assigned to each 20 km square was calculated from weighted averages (weight is proportional to 1/d², where d = distance) for all plots within 70 km of the 20 km square centre.

Norway Spruce 2000

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Norway Spruce 2001

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Norway Spruce 2002

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Norway Spruce 2003

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Norway Spruce 2004

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Norway Spruce 2005

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Norway Spruce 2006

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