Long-Term Ecological Research (LTER)/CDR019: Tree Competition at Cedar Creek Natural History Area
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LTER - Long-Term Ecological Research Program/Cedar Creek Natural
History Area (CDR)
LTER/CDR019 [Summary adapted from the LTER Core Data Set Catalog]:
This experiment was set up adjacent to CDR018 in the high disturbance,
garden area. Black soil (1.75 inches) was added to the Cedar Creek
Natural History Area (CCNHA) sandy soil to make four 10' x 54'
plots. The soil was rototilled and aluminum flashing was installed to
edge the plots and divide them into fourty-eight 5' x 9' plots. This
nitrogen-poor soil will be fertilized monthly with varying amounts of
NH4NO3. Seeds were planted with six replicates of each of the
following treatments:
1. Agropyron repens monoculture
2. Schizachyrium scoparium monoculture
3. Pinus strobus monoculture
4. Quercus ellipsoidalis monoculture
5. Agropyron repens + Quercus ellipsoidalis on half
6. Agropyron repens + Pinus strobus on half
7. Schizachyrium scoparium + Quercus ellipsoidalis on half
8. Schizachyrium scoparium + Pinus strobus on half
The competition plots were split, with half invaded by seed and half
to be invaded by seedling. For treatments 5-8, the right or left sides
were chosen at random, to plant the tree seeds.
Proprietary limits: Investigators have priority over data for
five years, but are interested in collaboration for novel comparisons before
then.
The Cedar Creek Natural History Area (CCNHA) is a 2200 hectare
experimental ecological reserve operated by the University of
Minnesota in cooperation with the Minnesota Academy of Sciences. CCNHA
is located in Anoka and Isanti Counties north of Minneapolis/St. Paul.
The site was established in 1940, was designated a National Natural
Landmark by the National Park Service in 1975. In 1977 it was included
as an Experimental Ecology Reserve in a proposed network, and in 1982
it was one of 11 sites in the U.S. selected by the National Science
Foundation for funding of LTER.
Information about LTER is also available at
'http://lternet.edu/'
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SCIOPS
