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Field Station Data Bank |
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The natural areas adjacent to UWM Field Station are the sites
of many research projects led by faculty and students at UWM and beyond. As
we wish to stimulate further research and collaborative projects based from
the Field Station, we have created this site for data sharing. The site will
be updated periodically as we continue to develop the Data Bank. The data files currently posted are abridged. Please contact the Field Station for the complete versions. |
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Vegetation Data for 1991 and 2006 The vegetation of Cedarburg Bog was sampled in 1991
and 2006 as part of a long-term monitoring program. We have detailed data on
herbs, shrubs, trees and seedlings of woody plants from 165 permanently
located sample units. Vegetation
survey methods (.doc) Map of sample units (.jpg) Approximate location of sample
units an aerial photo of Cedarburg Bog. First 1 or 2 digits indicate transect
number, last two digits indicate unit number. Example: 905 is transect 9,
unit 5. An imaging program may provide better viewing than your browser. 2006 species list (.xls) Note that taxonomy for some taxa
has changed since 1991. Also note that many taxa present at Cedarburg Bog
were not recorded in this sample. Tree plot x species matrix 2006 (.xls) Total basal area for each tree
species estimated using stems within 100 m2 circular plot. Two digits
after decimal indicate sample year. Example: 905.91 is 1991 and 905.06 is
2006. Shrub plot x species matrix 1991 (.xls) Sample unit percent cover for each shrub species estimated
with intercept line. Herb plot x species matrix 2006 (.xls) Maximum herb species cover value
of sample period 1 (early season) or 2 (late season) for each herb plot (two
per sample unit). First 1 or 2 digits indicate transect number, second two
digits indicate sample unit number, last digit indicates east (1) or west (2)
herb plot. Two digits after decimal indicate sample year. Example: 9052.91 is
transect 9, unit 5, west herb plot, 1991 sample. Tree ring counts 2006 During
the winter of 2006 we collected cores from live trees and stem cross sections
from dead, standing tamarack (Larix
laricina). We collected full cross sections from the largest glossy
buckthorn (Rhamnus frangula)
individuals near the same sample units. Based on the 1991 and 2006 vegetation
surveys, we have found that the cover and distribution of R. frangula has increased dramatically
over the last 15 years. Ring count table 2006 (.xls) This table includes mean annual ring counts and stem
diameters for 2 to 4 L. laricina
and R. frangula stems per plot, as
well as the maximum ring count by species. |
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© 2000 UWM-Field Station |
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