Skiffley
Creek and Dry Branch |
Jess
Riddle |
Nov
18, 2006 19:31 PST |
Ents,
Skiffley Creek, Dry Branch, Groundhog Creek, Rube Rock Branch,
and Tom
Hall Branch all radiate out from Big Bend in the Pigeon River
Gorge.
The gorge lies in North Carolina just east of Great Smokies
Mountain
National Park, and the mouth of Skiffley Creek is less than five
miles
from the mouth of Baxter Creek and its fantastic forests.
Skiffley
Creek was identified as an exceptional high basal area site by
W. W.
Ashe during his extensive surveys of the eastern forests during
the
early 1900's. More recently, Josh Kelly visited the stream, and
found
that while the original forest had been cut during the
intervening
decades, the second growth still reflected the site's original
high
productivity.
The steep, rhododendron covered slopes and low ridges of lower
Skiffley Creek made a much less promising introduction to the
stream
itself. However, a short distance upstream, the ridge to the
west
enlarges and provides more shelter and the slopes moderate. On
that
slope, the rhododendron gives way to striped maples and small
hemlocks
in the understory, and tuliptree takes over the canopy with
scattered
northern red oaks, white oaks, pignut hickory, and a few white
pines
on the lower slopes. Above that section, the slopes steepen and
rhododendron again takes over the understory, but tuliptrees
still
dominant. That steep section abruptly gives way to broad flats
well
watered by multiple forks of Skiffley Creek. Looking at maps
beforehand, that area appeared the most promising for
exceptional
forests, but rock cairns at the site clearly identified the area
as an
old farm. The tuliptrees growing on the old fields were
consistently
slender, but scattered white pine still reached 11'+ cbh and
140'+
tall. The still productive areas of the watershed apparently lie
farther upstream.
Only a low ridge separates the farmed flats from a moderately
steep,
southeast facing cove that leads down to Dry Branch. Chestnut
oak and
other oaks form most of the overstory in the upper part of the
cove,
and white pines are invading sections of the understory not
already
dominated by mountain laurel. However, one small umbrella
magnolia,
more typically seen on moist acidic sites, also survives in the
understory. Farther down, the cove becomes moister with
tuliptrees
assuming dominance and scattered northern red oaks and ash* also
present in the canopy, and striped maple and dogwood in the
understory. The mouth of the cove, 600' below the top, appears
more
acidic with a hemlock canopy.
Species Cbh Height Stream
Ash, Biltmore 5'11" 138.7' Dry
Branch
Ash, Biltmore 6'10" 143.4' Dry
Branch
Ash, Biltmore 7'9" 147.2' Dry
Branch
Ash, Biltmore 6'3" 150.7' Dry
Branch
Basswood, White 6'4.5"
135.2' Skiffley Creek
Birch, Black 4'0" 113.9' Dry
Branch
Hickory, Mockernut 5'10" 120.2' Skiffley
Creek
Hickory, Mockernut 5'2" 127.2' Dry
Branch
Hickory, Mockernut 5'9" 129.7' Dry
Branch
Hickory, Pignut 5'3.5" 140.9' Dry
Branch
Oak, Chestnut 10'7" 125.9' Skiffley
Creek
Oak, Northern Red 13.4" 126.6' Skiffley
Creek
Oak, Saul's 8'10" 136.2' Dry
Branch
Oak, White 9'0.5"
126.0' Skiffley Creek
Oak, White 7'8" 128.6' Skiffley
Creek
Oak, White 8'6" 128.9' Dry
Branch
Oak, White 7'3" 134.8' Dry
Branch
Pine, Eastern White 9'8" 151.6' Skiffley
Creek
Pine, Eastern White 7'10" 158.3' Dry
Branch
Tuliptree 9'0" 155.6' Dry
Branch
Tuliptree NA 156.9' Dry
Branch
Tuliptree 6'10" 164.1' Dry
Branch
*The ashes are the same species that has previously been called
green
ash at Wadakoe Mountain, lower Big Creek in the Smokies, and
elsewhere. Fruit characteristics clearly key them to white ash,
but
twig characteristics, the other feature commonly used for
separating
green and white ash, do not match white ash. They also differ
markedly in appearance from the white ash that grow near them at
Big
Creek. Their features could, and may, be an entire separate
post.
The 150.7' is the second tallest for ash with these
characteristics.
The 129.7' mockernut hickory is the second tallest confirmed in
NC.
The saul's oak, a fairly common hybrid between white and
chestnut, is
the tallest known. The tuliptrees all appear young and many are
still
rapidly growing upward.
The tall hardwoods and close proximity make comparisons between
the
Dry Branch cove and lower Big Creek natural, but the forests
bare
little resemblance beyond basic structure. Both areas have
abundant
tuliptrees, but the typical mixed mesophytic species that play a
major
role at Big Creek, basswood, silverbell, sugar maple, and
buckeye at
Dry Branch are scarce, only in the understory, absent, and
absent
respectively. Instead, Dry Branch has scattered hickories and
white
oak. Much of that compositional difference may result from Dry
Branch
being dryer and warmer even though it is slightly higher (up to
2500'
elevation). The Dry Branch site lacks large surrounding
mountains, so
no cool air drains through the site. Conversely, cool air could
drain
down to Big Creek from over 5000' from multiple directions. The
steep
slopes of Mount Sterling to the south also shade all of lower
Big
Creek. The cove on Dry Branch faces southeast with only a low,
gentle
ridge on the opposite side of Dry Branch, and hence receives
much more
solar radiation.
Those features give the Dry Branch Cove much more in common with
tall
tree sites in South Carolina. They lack the striped maple in the
understory, but also have hickories and the same variety of ash
as
major canopy components. The SC sites may also high higher soil
pH
since they include scattered black walnuts, and white pine grows
poorly in them.
Jess Riddle |
Re:
Skiffley Creek and Dry Branch |
Jess
Riddle |
Nov
21, 2006 09:53 PST |
Ents,
The ash of uncertain species on Dry Branch turned out to be a
named
variety of white ash, Biltmore ash (Fraxinus americana var.
biltmoreana). Trees referred to as green ash in previous posts
about
Big Creek NC, Savage Gulf TN, Fall Creek Falls SP TN, Panther
Creek
GA, Tamassee Knob SC, Station Cove SC, and Wadakoe Mountain SC
are
also biltmore ash.
Jess
|
Re:
Skiffley Creek and Dry Branch |
Joshua
Kelly |
Nov
21, 2006 14:00 PST |
Nice work Jess (yeah, I know, more like play!),
Your recent outing to Skiffley Creek has put up another site in
the Bald
Mountains with a 140+ Rucker index. The Bald Mountains are
broadly defined
as the mountain range(s) along the NC-TN border between the
Pigeon and
Nolichucky River Gorges, with a natural division into northern
and southern
ranges at the French Broad River. As in other areas of the
Southern Blue
Ridge, complex geology is the rule: the Hot Springs Window,
areas of
Granitic Rock (Max Patch and Cranberry) and the Medisedimentary
Ridges
around Rich Mountain and Camp Creek Bald are all quite unique.
With only 3
sites even prospected so far (Shelton Laurel as one site), the
potential
productivity of this area is promising! Below is a complete
Rucker Index of
the Bald Mountains, with the site of each tree and the person
who measured
it listed. MD- Michael Davie JK- Josh Kelly JR- Jess Riddle
1) Tulip Poplar 164.1' Dry Branch JR
2) White Pine 158.3' Dry Branch JR
3) Hemlock 153' Spring Creek Gorge JR
4) Biltmore Ash 150.7' Dry Branch JR
5) N. Red Oak 143.3' Green Ridge MD
6) Buckeye 142.9' Green Ridge JK
7) Pignut Hickory 140.9' Skiffley Creek JR
8) White Basswood 138' Dry Creek MD
9) Black Cherry 137.9' Black Cherry MD
10) Sycamore 137.5' Big Creek MD
RI - 146.6
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