
Once we
arrived at the plot, we first had to assign jobs for each person. The
jobs were: flagger, measurer, tagger, and recorder. Also, everyone had
to lay 50m lines of measuring tape so we clearly defined each sub-plot.
That way we could easily distinguish which part of the plot the were
in. There was already rebar that was placed to mark each corner of each
sub-plot so we knew exactly where to start and stop the lines.
The flaggers'
duty was to walk through the fifty by fifty meter plots searching for
every single tree, even the smallest ones imaginable, and to mark each
tree by placing a small flag by it so the people with the next jobs
didn't have to search as well. This was sometimes extremely difficult
because some of the trees were only about two or three centimeters tall.
Once this was
done, it was the measurers turn. They had to gather precise measurements
of the heights and diameters of the bases of every single tree. To find
the diameter of trunks we used calipers. It wasn't always easy to get
precise measurements because some of the tree trunks were less than
one millimeter in diameter. So, we rounded the tiniest ones up to one
millimeter when we recorded it on the data sheets. To find the height
of the tree, we either used a metric tape measure or a meter stick.
The measurements started at the base of the tree from where it came
out of the ground and ended at the highest living point on the tree.
We recorded it in centimeters.
Following closely
behind the measurers were the taggers. Their job was to create new tags
for trees that either needed a new tag, or for new trees that had no
tags. Every once in a while the tagger got confused because two people
were asking for different tag numbers at the same time. To make the
tags, we used an impression tool on thin sheet metal. To use the tool
we selected a character we wanted to imprint on the sheet metal and
squeezed the handle together. The naming scheme corresponded with what
grid we were in. We divided the 50x50m grids into 5x10m sub-plots. the
10m long spaces were labeled 1-5. The 5m wide spaces we labeled A-J.
So, the first subplot was labeled A-1. When the taggers made the labels
for each tree, he/she first entered the letter of the sub-plot, followed
by a hyphen, and then the plot number.
Say there were six trees in that
sub-plot eight years ago when they last counted trees and we found more.
The first tag we made for new trees started with the number seven. Say
we couldn't find an old tree. We would record it in the data sheets
as not found and assume elk ate it or it was weathered away. We would
not make another tag that would replace the lost tree. After making
the tags, we loosely tied them around the trunk of the trees with metal
wire. Bending the wire through the sheet metal to hold it, bending the
ends of the metal wire together, and slightly burying the tags underground
so they wouldn't disappear was the hardest part of the project.
While the measurements
were being taken, they were also being recorded. The recorders had to
write down the species of tree, the tag number, the measurements and
the condition of the tree. What we recorded for the species name was
the first two letters of genus name and then followed by the first two
letters of the species name. So, ABPR is a noble fir, Abies procera.
The recorders had to focus greatly on their tasks because the information
had to be exact.
After we had collected
all of the data, we gathered all of the gear and started to pack up.
Then, we all got ready for the long hike back to camp.
-
Mike Kloss
-
Kyle Breakey