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Fig. 3 | Forest Ecosystems

Fig. 3

From: Dendroclimatic analysis of white pine (Pinus strobus L.) using long-term provenance test sites across eastern North America

Fig. 3

White pine (Pinus strobus L.) radial growth represented by the year scores on the first and second principal component axes and the relationship with mean maximum temperature based on multiple regression analysis. Black boxes indicate a negative relationship and grey boxes indicate a positive relationship between growth and climate. Where more than one climatic variable was significant, numbers for a given test site indicate order of significance (1 is most important) based on standardized partial regression coefficients. All relationships shown are statistically significant (p < 0.05). R2 is the adjusted coefficient of determination. NS indicates that no relationships were statistically significant

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