Savanna/Woodland, Lake Co, Illinois |
On
a spring afternoon in the early years of this century I took a stroll through
the East Woods at the Morton Arboretum near Lisle, Illinois. The trees were
still leafless and the light was very fierce, so much so that I shielded my
eyes with my hand, as if I was saluting my companion. Christopher, who walked
beside me, and I were admiring the ecological restoration work that had been
accomplished in that woodland over the years since I had been visiting.
Dominated by oaks and sugar maples the East Woods is about five hundred acres,
the same as Ashdown Forest in England where Winnie-the-Pooh lived. In fact, the
part in which we rambled was about 100 acres like that part of Ashdown Forest
around Owl’s house known to Pooh and his friends as the 100 acre wood.
As
far as anyone can tell the vegetation composition of the East Woods now
converges on that found in the woods more than a century before. After the mid
19th century the woodlands of the Chicago area came under the influence of the
huge numbers of new settlers in the area, altering hydrology, modifying fire
regimes, selectively logging trees, introducing alien species and so on.
Undoing these influences and restoring representative woodlands to their
pre-settlement composition is a goal of some Chicago-area conservation
organizations. Marlin Bowles, an ecologist at the Arboretum, is an authority on
reconstructing the region’s pre-settlement vegetation, doing so by digitizing
early land surveyors’ notes and creating regional vegetation maps for the
1800s. Bowles and his colleagues have applied this information to the ongoing
restoration work at the East Woods.
Between
the trees every once in a while we could see clumps of green where buckthorn,
an invasive shrub, was leafing out, taking advantage of the early spring light
before other vegetation had emerged from its winters quiescence. On my early
visits to the East Woods it has been heavily invaded by European buckthorn, an
especially aggressive exotic Old World shrub which has become one of the major
impediments to restoration efforts in Midwestern woodlands. The buckthorn
population in the East Woods had been markedly diminished.
Christopher
Dunn, my fellow stroller, was at that time the Arboretum’s director of
research. Like buckthorn both Christopher are I old world transplants.
Christopher is a Scot, and I am from Dublin. Unlike buckthorn which had been in
the region since the mid-1800s, Christopher and I were very recent arrivals.
Christopher, if I recall correctly, came over when he was a teenager and I when
I was a little over thirty. We stopped at a point where we could look over the
terrain and admire the fidelity with which the restoration work has returned
the woodland to the structure of a pre-settlement Midwestern woodland, and as
did, we turned to each other, and simultaneously it seems we both had the same
thought: “There is something not quite right about this.” In a nostalgic
moment, apparently, both of us recalled the woodlands of Ireland and Scotland.
These tended to be darker, more tightly packed habitats often on craggier
terrain than is typically the case in this flatter part of the world. We were,
for a moment at least, contrasting the East Woods not with the conjectured state
of that woodland in 1800s, freed from the injurious impacts of the past
century, but with the woodlands of memory, against which any woodland might
seem like a collection of so many living sticks.
***
We
are living in times of great transplantation. About one and a half percent of
the US population moves between the major regions every year and roughly the
same move to a different state within the same region. An additional three
percent move across county lines. Internationally, the numbers of people
crossing borders is staggering. For instance, if all those who migrated
internationally in 2010, about 216 million people, converged on an uninhabited
region (say Antarctica) it would make that country the fifth most populous
country on Earth. And the flow of capital and products is even less restricted.
If all internationally transported goods ended up in that one uninhabited
region, no doubt it would sink! Accompanying the flow of goods, services, and
people is a great biological interchange where species which formerly
restricted to one biogeograhical zone are transported either deliberately or
unintentionally to areas outside their native range. Christopher and I standing
in the 100 acre woods personified these frenzied exchanges. Old world islanders
in the US Midwest discussing a European botanical rarity now thriving in a
restored Chicago woodland.
Now,
one of the implications great transplantation that has heretofore been
neglected is that many of us end up living in landscapes different from the
ones in which they were raised. Since a person’s attunement towards nature is
oftentimes determined by youthful encounters with landscapes, that which is
most delightful to us in nature as adults is that which we remember from our
youth. Thus the landscapes of our adulthood are somewhat uncanny to us. Does
this in turn make it difficult for us to care for them no matter how pristine,
managed, or restored they are. Or, perhaps more realistically, do we need new
tools — tools of initiation, imagination, and empathy — to fit into a landscape
that is new to us?
That
is the question I will be exploring in the coming posts.
References
Internal
Migration in the United States Raven Molloy, Christopher L. Smith and Abigail
Wozniak The Journal of Economic Perspectives Vol. 25, No. 3 (Summer 2011) (pp.
173-196).
http://www.migrationinformation.org/datahub/charts/worldstats_1.cfm
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