Ushuaia |
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The city
of Ushuaia, taken from the air. Notice the small landing strip in the
middle of the picture. This is the old runway, and pilots would have
to take off and land before hitting the water on both sides of the runway.
The city is sandwiched between the Andes mountains and the Beagle Channel.
The population is ~50,000 and tourism is the major industry.
Picture by Mike. |
The central
business district has many hotels, shops and restaurants that cater
to the flow of tourists, most of whom use Ushuaia as a launching point
for Antarctica.
Picture by Callista. |
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Another
view of the city. |
The city
dock is where all of the passengers, freight, fishing and research vessels
land. It is very expensive to tie up at the dock, so the turnover time
between voyages is often quite short.
Picture by Bob. |
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The
undergraduate research of two of the students on the trip was to be
conducted while we were in Ushuaia. The foothills of the Andes Mountains
start at the northern edge of the town. The class took cabs to the ski
lift that would take us to the place where we would collect data.
Picture by Bob. |
The forest
we visited is at the base of a "glacier." In the past the
volume of ice was much larger, and today there are only patches of ice
that last year round. Global climate change is the cause of the retreat
of the glacier.
Picture by Bob. |
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The purpose
of the experiment was to quantify the number of trees and their basal
area at different elevations. This will then be used to estimate the
change in the location of the tree line in respect to climate change.
Picture by Elyse. |
The only
tree in these forests was the Southern Beech. The class broke up into
three different groups. One of the groups sampled transects at 700m
and 600m. That group was just below the current tree line. The second
group sampled transects at 500m and 400m. Both of these locations were
medium density forests. The last group walked along the new ski run
where trees were recently cut and measured the age of trees by counting
tree rings. This will later be correlated to the diameter at breast
height (DBH) measurements that were also taken.
Picture by Bob. |
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