Long-Term Ecological Research (LTER)/CDR012: Effects of NH4NO3 and pH on Microorganism Populations (SORG) at Cedar Creek Natural History Area
Entry ID: LTER_CDR012

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

LTER/CDR012 [Summary adapted from the LTER Core Data Set Catalog]:

The purpose of this experiment is to measure the effect of NH4NO3
addition and different levels of pH on microorganism populations. The
experiment is located in field B. This experiment was laid out as a
full factorial design with three nitrogen levels and four pH levels.
The nitrogen levels are E, G, and I as defined in NUTRADD.DOC in the
"microplot" category.

The pH levels strived for are 4.0, 5.5, 6.5, and controls. The
experiment has four replicates. The treatments were randomly assigned
to the 48 plots. The plots are 4 m x 4 m and are laid out in a 6 x 8
grid.

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/'

Related URL
Link: GET DATA
Description: Access to Cedar Creek LTER datasets


Geographic Coverage
 N: 45.0 S: 45.0  E: -93.0  W: -93.0

Temporal Coverage
Start Date: 1984-01-01


Location Keywords
CONTINENT > NORTH AMERICA
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MINNESOTA


Science Keywords
BIOSPHERE >TERRESTRIAL ECOSYSTEMS >FORESTS    [Definition]
BIOSPHERE >VEGETATION >FOREST COMPOSITION/VEGETATION STRUCTURE    [Definition]
BIOSPHERE >VEGETATION >HERBIVORY    [Definition]
BIOSPHERE >VEGETATION >NITROGEN    [Definition]
BIOSPHERE >VEGETATION >NUTRIENTS    [Definition]
LAND SURFACE >SOILS >ORGANIC MATTER    [Definition]
BIOSPHERE >TERRESTRIAL ECOSYSTEMS >WETLANDS >MARSHES    [Definition]
BIOSPHERE >AQUATIC ECOSYSTEMS >WETLANDS
BIOSPHERE >AQUATIC ECOSYSTEMS >WETLANDS >MARSHES
BIOSPHERE >ECOLOGICAL DYNAMICS >SPECIES/POPULATION INTERACTIONS >SPECIES COMPETITION    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >SPECIES/POPULATION INTERACTIONS >POPULATION DYNAMICS    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >COMMUNITY DYNAMICS >PLANT SUCCESSION    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >COMMUNITY DYNAMICS >GRAZING DYNAMICS / PLANT ECOLOGY    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >BIOGEOCHEMICAL CYCLES    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >NUTRIENT CYCLING    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >BIOMASS DYNAMICS    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >PRIMARY PRODUCTION    [Definition]


ISO Topic Category
BIOTA
GEOSCIENTIFIC INFORMATION
INLAND WATERS


Project
LTER >Long-Term Ecological Research    [Information]


Keywords
ACIDITY
ALKALINITY
CCNHA
CDR
CDR012
CEDAR CREEK
ECOSYSTEMS
LTER
NH4NO3
NITROGEN
NSF
PH
SORG


Originating Center
UMN


Data Center
Cedar Creek Natural History Area, Long-Term Ecological Research Network Office    [Information]
Data Center URL: http://www.lter.umn.edu/
Dataset ID: CDR012

Data Center Personnel
Name: STEVE BAUER
Phone: 612-625-5738
Phone: 763-434-5131
Fax: 612-624-6777
Fax: 763-434-7361
Email: bauer051 at umn.edu
Contact Address:
University of Minnesota
100 Ecology Building
1987 Upper Buford Circle
City: St. Paul
Province or State: MN
Postal Code: 55108
Country: USA


Personnel
GENE R. MAJOR
Role: DIF AUTHOR
Email: gsfc-gcmduso at mail.nasa.gov


DAVID G. TILMAN
Role: INVESTIGATOR
Role: TECHNICAL CONTACT
Email: dtilman at lternet.edu
Email: tilman at cdr.lter.umn.edu
Contact Address:
University of Minnesota
100 Ecology Bldg, 1987 Upper Buford Circle
Department of Ecology, Evolution and Behavior
City: ST PAUL
Province or State: MN
Postal Code: 55108-6097
Country: USA


Publications/References
Tilman, D.; H. Olff. 1991. "An experimental study of the effects of pH
and nitrogen on grassland vegetation". Acta Oecologica, Vol. 12,
pp. 427-441.

See also: http://www.lter.umn.edu/

Creation and Review Dates
Last DIF Revision Date: 2009-08-28

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