Long-Term Ecological Research (LTER)/CDR010: Old Field Survey (OFIELD) at Cedar Creek Natural History Area

LTER - Long-Term Ecological Research Program/Cedar Creek Natural
History Area (CDR)

LTER/CDR010 [Summary adapted from the LTER Core Data Set Catalog]:

The purpose of this survey was to survey natural patterns of soil
nutrients, particularly nitrogen, vegetational abundance, species
composition, and herbivore populations. In the survey, 2,300 1 m x
0.5 m quadrats were sampled in 22 different fields. In 20 fields four
transects were laid out. In two fields six transects were laid out.
Twenty-five quadrats were placed a distance of 1.5 m apart along each
transect. The transects were 40 m long and 25 m apart. In field 21,
the transects were not parallel. In fields A, B, and C, the transects
ran along the edge of the treatment I macroplots. Small mammals are
snap-trapped along transects (five traps/transect at 10-m intervals)
yearly in late August - early September. Grasshoppers are
sweep-sampled along transects one to three times per year.

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/'