Dale,
Nice to see some of this data being updated. I was looking at the Clarion
River Rucker Index and data from more recent trips to the river. Do you have
the measurements Carl and I took between the Gravel Lick Bridge and Mill Creek
from Oct 2008? Anyway. almost all of the trees in the upper end of your Rucker
index are from Cook Forest itself. However three are some heights for other
species outside of the park that would make the tallest for the species from
areas outside of Cook Forest: Clarion River Rucker Index:
http://www.nativetreesociety.org/fieldtrips/penna/clarion_river_rucker_index_pa.htm
(Sept 2008)
Dotted hawthorn 2.3 41.7 Portland Mills
Juneberry N/A 67.5 Portland Mills
Shagbark hickory 4.5 113.6 SGL-Piscataqua
N. red oak 10.1 126.7 CCSP-River Trail
Red maple 8.2 106.4 CCSP-River Trail
Sugar maple 6.4 110.4 CCSP-Irish Rock Trail
Yellow birch 6.6 99.2 CCSP-Minich Run
doted hawthorn 2.5 43.4 Millstone Creek
Am. Hornbeam 2.9 38.0 Millstone Creek
silver maple 9.7 107.3 Portland Mills
staghorn sumac 1.7 36.9 Portland Mills
sycamore 4.8 130.6 Portland Mills
CCSP is Clear Creek State Park a few miles upstream from Cook Forest.
Millstone Creek Area
http://www.nativetreesociety.org/fieldtrips/penna/millstone/millstone_creek_area.htm
is farther upstream along the Clarion than Clear Creek State Park, but not
nearly as far as Portland Mills. I am not sure where the SGL at Piscataqua is
located. - I believe it is below the Gravel Lick Bridge a few miles downstream
from Cook Forest.
I know there are some taller black gum and witch hazel along the river south of
the park that Carl and I encountered on our canoe trip in October 2008
http://www.nativetreesociety.org/fieldtrips/penna/gravellick/clarion_river_gravel_lick_to_mil.htm
but unfortunately we did not measure them. At the time we did not realize
they would be the tallest documented yet in the corridor.
Ed Frank
http://nature-web-network.blogspot.com/
http://primalforests.ning.com/
http://www.facebook.com/profile.php?ref=profile&id=709156957
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