Click below for species graphs: Red Cedar  White Ash  Hickory  Sugar Maple  Oak

White ash had a high annual growth rate throughout the 25 years studied. Between 1985 and 1988 white ash had a significant decline in annual radial growth. Although the other species exhibit a similar pattern, white ash and sugar maple were affected most strongly. Back to multiple species graph

The hickory species had the lowest annual growth and the most steady growth rate, fluctuating only between 1% and 2% BAI, throughout the majority of the years analyzed. Back to multiple species graph

Although the oak measurements seem to correspond with the readings of the other species, there was a large standard error in the oak core measurements. This may be due to the use of only 3 oak cores or may be caused by the use of 3 different oak species (white oak, red oak, and chestnut oak). Back to multiple species graph

As seen by the large fluctuations in annual radial growth, sugar maple is highly sensitive to environmental fluctuations (See sensitivity graphs). Between 1985 and 1988 sugar maple had a significant decline in annual radial growth. Although the other species exhibit a similar pattern, sugar maple and white ash appear to have been most strongly affected. Back to multiple species graph

Only one red cedar core was analyzed and it was difficult to read due to the presence of many false rings. As observed in the above graph, the growth appears to be erratic. This most likely represents measurement errors and not the true growth pattern. This core also appears to contradict the common trend of a decrease in annual growth with time. Back to multiple species graph