Robinson
State Park update |
John
Eichholz |
Dec
03, 2006 18:38 PST |
ENTS:
Robinson State Park, in Agawam Massachusetts, is on the banks
and
terraces above the Westfield River, near its confluence with the
Connecticut River. The park encompasses about 900 acres in a
strip
along the river. The bluffs above the river are in some places
about
200' high, in others as close as 60'.
The first cove we explored was in the lower area. Elevations in
this
cove are from 150' to 60 feet above the river. In the plains at
the
base of the cove is flat and rather wet land, with several small
streams. The dominant canopy here is red oak and tuliptree, with
some
white ash, white oak, red maple, yellow birch, beech, and
sporadic
shagbark hickory. The tuliptrees seem to be an even aged cohort
for the
most part, and are mostly located in the lower area near the
cove basin
and flats beyond the cove. The trees are in beautiful shape,
with large
thrifty crowns, straight trunks, and no sign of wind damage or
disease.
This location is probably the most northerly site with extensive
natural
tulip tree population in Massachusetts, although we know of a
few
isolated pockets farther north, so the health of the trees is of
some
interest.
We also visited a second cove. This cove is much deeper, over
100' from
the rim to the base, with no flat areas at the base. Rather, the
cove
empties directly in to the Westfield River. The state height
champ for
tuliptree is in this cove, which we reconfirmed to 140.8' or so.
There
are about six or eight tuliptrees in this cove, with a couple
130' among
them. There is also a small population of American Beech,
midsized but
quite tall for the area. There is quite a bit of red oak, some
white
oak, some white ash, and a lone pignut hickory in the canopy.
The park is the subject of a recent controversy over a proposed
logging/thinning operation, about which a public hearing will be
held on
December 12. Some of the thinning is marked up to and a bit over
the
edge of the first described cove. We did not view the main
marked
areas, although I did visit an area near the entrance, which
seems to be
marked in a manner consistent with a timber improvement
thinning. Much
of the controversy is due to a state restriction prohibiting
commercial
logging within State Parks.
I think the only park record we broke was for white oak, but we
came
close on beech and pignut hickory. Here is my list for the day
-- note,
I did not take some of the CBH readings nor all of the tree
readings, so
there is more from this outing:
cbh species Height
First cove
11.0 Tulip Tree
126.8
5.5 White Ash
114.8
-- White Oak
94.9
8.5 Tulip Tree
123.9
--- Shagbark Hickory 97.9
-- Tulip Tree
118.6
5.3 American Beech
96.8
Second cove
6.0 American Beech
105.4
5.2 American Beech
107.6
5.2 American Beech
104.8
-- White Ash
129.3
-- Tulip Tree
140.9
5.4 American Beech
105.8
6.4 White Oak
106.3
4.7 American Beech
103.0
4.8 Pignut Hickory
112.1 Bob got 114'+
John Eichholz |
Behind
the scenes |
Robert
Leverett |
Dec
04, 2006 12:58 PST |
ENTS,
If you want a tree-measuring superstar, just call on the
services of
ENTS mathematician John Eichholz. On our Robinson visit
yesterday, John
went right to work and by day's end we had earned a detour to
Friendly's
where John introduced himself to the miracle of watermelon
sherbet. Why
had John earned the trip? Because, we successfully raised
Robinson's
Rucker by 0.3 of a point from 118.2 to 118.5. I expect that
we'll
eventually get Robinson's Rucker to 119. But we have to stay
honest to
our mission. We must intensify our search for a taller Valley
white
pine.
One side story worth presenting is the (yes we did it again)
remeasurement of the champion tuliptree. The species can be
devilishly
difficult to measure with lots of tops to test, one often behind
another. Change your ground position by a couple of feet and the
laser
no longer returns bounces from the target twig. However, I
wanted John's
determination to represent another expert measurement and to
stand
beside Gary's and mine. So, we each measured the tulip and from
a
different location. Gary got a 140.9, I got a 140.9, and John
got a
140.8. Two other measurements of mine were 140.6 and 141.1. I
settled on
140.9. The tulip's girth is a highly respectable 10.5 feet.
So, why do we keep measuring the same tree? Its to get a cluster
of
measurements on the twig of interest, once we've zeroed in on
the spot
that gives us our highest readings. This may not happen for a
couple or
three visits, because we just don't fine the twig. But for the
Robinson
tree, we've now had Will Blozan, John Eichholz, Gary Beluzo, and
myself
measure the tree and all of us have gotten at least one
measurement over
140. We've also got measurements in the 139.0 to 139.9 range.
However,
as Ed Frank points out, choosing the right measurement is not a
process
of averaging. It is a process of locating the spot in the crown
of the
tree that gives the highest readings, taking repeated
measurements of
that spot, examining the patterns. That way spurious returns can
be
identified and eliminated and checks can be made on clinometer
readings
where the clinometer sticks.
I never thought of tree-measuring as a
committee activity, but there
is a lot at stake relative to the big Robinson tuliptree. Uh,
okay, Bob,
you ask: what specifically is at stake? Well, as of yesterday,
the
Robinson tree became the tallest tree of any species to be
measured in
the Connecticut River Valley. The 140.9 figure surpasses two
Valley
white pines, both of which are a hair over 140 feet. In
addition, at
least 4 other tuliptrees in Robinson surpass 130 feet. What is
Robinson's competition? There are 3 tuliptrees in a stand in
Northampton
over 130 and an isolated tuliptree on U.S. Route 20 just over
130. So
far, that is it. The number of other hardwoods species in the
Valley
that have been measured to over 130 feet in height stands at one
species
- American sycamore. We've found one sycamore in that class and
it grows
in Easthampton. That worthy individual stands at an impressive
137 feet,
but based on all the other sycamores we've measured it is a
statistical
outlier.
Courtesy of Robinson SP, we have a white ash
at 127.0, but none that
reaches the magic 130. The northern red oak in Robinson weighs
in at
117.2 feet. It is tops of for its species in the Valley.
Somewhere there
may be an eastern cottonwood that brushes 130, but darned if I
can find
it. Eventually, John Eichholz, Gary Beluzo, or myself will
confirm a
Valley pine to 141 or 142, but until that happens, the Robinson
SP
tuliptree is the Lord of the Valley.
We now have our work cut for for us. We
need to scour the Westfield
River corridor, to include its Little River tributary for other
tuliptree spots. It isn't enough to know that they are present,
somewhere, but how well they are doing in the Connecticut River
Valley
and its tributaries. It is all part of our tuliptree profiling
and we're
gradually making headway across the range of the species. A more
full
accounting will appear in the next edition of the Bulletin of
the
Eastern Native Tree Society.
The big tuliptree we measured in the new
location that we visited
dresses out at an impressive 136.0 feet in height and 11.4 feet
in
girth. So these aren't pencil-thin trees that shot up through an
opening
to significant heights, but would hardly be noticed except to
height
measurers. These are impressive trees.
Bob
Robert T. Leverett
Cofounder, Eastern Native Tree Society
|
Robinson
Tulips |
Robert
Leverett |
Dec
06, 2006 09:12 PST |
Ray,
One by one, we'll locate and document the
special trees of Robinson.
Can the tulip stay dominant in the Connecticut River Valley -
Massachusetts portion thereof? The tuliptree probably has just
barely
the capacity to reach 150 feet in the Connecticut River Valley
of
southern Massachusetts. Maybe we'll eventually find one or two
statistical outliers. The Hudson River watershed at the latitude
of
about 41.7 degrees definitely has 150-ft class tulips. But, it
would be
truly inspiring to locate a 150-footer in Massachusetts and more
particularly in Robinson.
I was especially interested in your observations about what
might have
provided the tulips in the ravine complex we visited on Sunday
their
opportunity to start growing. I'm wondering if Russ Richardson
can shed
light on the initial growing conditions for the species as one
goes from
the latitudes in West Virginia to Massachusetts?
Bob
|
Re:
Robinson Tulips |
rayof-@ndws.com |
Dec
06, 2006 09:49 PST |
The 150 is a wish list Bob, but it would certainly be nice to
find it.
I suspect based on the topography of the locations of these
stands
that some water based event such as heavy flooding runoff may
have precipitated the growth of these. The top layer of soil in
that
area is typically acidic in nature and heavy with oak material.
Once you get below that, it gets more mineral in nature.
Exposing
the lower layer for a period of time due to a heavy surface
erosion
due to runoff may have been the catalyst. Its also possible it
was a fire, but thats much more unlikely seeing that they are
rather widely spread apart.
Love to hear input from the south about that being likely.
Coring will shed some light on the exact age of these.
Ray
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