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Forest Ecosystems
Fig. 2 | Forest Ecosystems

Fig. 2

From: Regeneration patterns of key pine species in a mixed-pine forest indicate a positive effect of variable retention harvesting and an increase in recruitment with time

Fig. 2

Comparison of red pine and eastern white pine seedling density (seedlings·ha−1) among treatments 2 and 6 years since VRH treatment in a mixed-pine forest ecosystem in the eastern Upper Peninsula of Michigan, USA. Letters a and b are used to indicate significant differences among treatments for the 2 year data, while letters x and y are used to indicate significant differences among treatments for the 6 year data (P < 0.05)

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