The Coweeta Hydrologic Laboratory (CWT), located in North Carolina, is one of 19 Long-Term Ecological Research (LTER) sites established by the National Science Foundation (NSF). The CWT site consists of Eastern deciduous forest, hardwood forests and white pine plantations. The site is affiliated with the University of Georgia, Virginia Polytechnic Institute and State Univertsity, USDA Forest Service, and the Southeastern Forest Experiment Station. The CWT site has been a USDA, Forest Service research site for over 50 years and is one of the oldest, continuously operated research projects of its type in the world. The major focus of the CWT site is to develop information on the long-term dynamics of forested ecosystems. The objectives include documenting (1) long-term trends in ecosystem responses; (2) responses to anthropogenic influences; (3) long-term changes in input-output nutrient dynamics; and (4) process-level changes during ecological succession.
The following are LTER core data sets from the CWT site:
1) CWT001: Coweeta Climatic Measurements. Daily climatic parameters since 4/1/1935 and summarized as mean monthly temperature, max/min temperature, total precipitation, and mean global radiation. Investigator: Lloyd W. Swift.
2) CWT002: Precipitation Chemistry. Weekly bulk precipitation from the main Coweeta Climatic Station collected from 1972-1989. Variables include pH, NO3-N, NH4-N, PO4, Cl, K, Na, Ca, Mg, SO4, and SiO2. Investigator: Wayne T. Swank.
3) CWT003: Streamflow Chemistry. Weekly streamflow data for watershed collected from 1971 - 1989. Variables include pH, NO3-N, NH4-N, PO4, Cl, K, Na, Ca, Mg, SO4, and SiO2. Investigator: Wayne T. Swank.
4) CWT004: Clearcut Regeneration Study. Consists of species composition and biomass across sites over the first 6 years of regrowth with values for an adjacent uneven-age, mixed hardwood forest. Data were collected 1977-1979 and 1982 to determine diameter/biomass relationships. Invesigators: Lindsay R. Boring and Bruce L. Haines.
5) CWT005: Ecology of Stream Invertebrates in a Forested and a Commercially Clearcut Watershed. Investigators: Martin E. Gurtz and J. Bruce Wallace.
6) CWT006: Litterfall on Watershed 7. Litter fall was sampled in three vegetation zones on Watershed 7. The three zones are core hardwood, oak-hickory, and oak-pine. Litter was sample biweekly since 1974. The watershed was clearcut in 1977 and data spans both clearcut and non-clearcut periods. Investigator: Wayne T. Swank.
7) Tree Species Survey for Watershed 18. The data set documents the harvest of all plants less than one foot tall in 1m^2 plots since 1970. Investigator: Frank P. Day.
Many other non-core datasets are also available.
Access to the LTER Information System and on-line data set catalog is available through the Gopher information server. The Coweeta site data catalog can be found through the LTER gopher server: LTER Site Information Servers/Coweeta Hydrologic Laboratory (CWT)/ . Bibliographic, personnel, dataset, and other LTER-related information can be found on the server. Contact Rudolf Nottrott, LTER Network Office at RNottrott@LTERnet.edu for more information about the gopher server and the LTER network.
Entry_ID: CWT_LTER (MD Identifier: 4581)
Geographic Coverage:
Southwest Extent: 35N,83W Northeast Extent: 35N,83W
Discipline, Subdiscipline:
EARTH SCIENCE > ATMOSPHERE
EARTH SCIENCE > LAND
Location Keyword:
NORTH AMERICA
Parameter Group, Parameter:
ATMOSPHERIC DYNAMICS > ATMOSPHERIC TEMPERATURE
ATMOSPHERIC DYNAMICS > PRECIPITATION
ATMOSPHERIC DYNAMICS > SOLAR RADIATION
BIOLOGICAL ENTITIES > SURFACE VEGETATION
GEOGRAPHY AND LAND COVER > SURFACE VEGETATION
HYDROLOGIC PARAMETERS > CONTAMINATION
General Keywords:
BIOMASS
CANOPY
CLEARCUT
CLIMATE
DEPOSITION
ECOLOGY
ECOSYSTEMS
FOREST
GROUNDWATER CHEMISTRY
IDN_GSFC/UGA
LITTERFALL
LTER
NITRIFICATION
NUTRIENT CYCLING
NUTRIENT DYNAMICS
POLLUTION
POPULATION ECOLOGY
PRECIPITATION CHEMISTRY
PRIMARY PRODUCTIVITY
SOIL CHEMISTRY
STREAMFLOW CHEMISTRY
THROUGHFALL
TREES
UNDERSTORY
VEGETATION
WATER CHEMISTRY
WATERSHED
Science Review Date: 1994-02-15
Revision Date: 1994-02-15
Archive:
UGA>University of Georgia, Institute of Ecology
Data Set ID: CWT001
CWT002
CWT003
CWT004
CWT005
CWT006
CWT007
Contact: CALABRIA, GILDO N.
Electronic Mail: BITNET> gcalabri@uga
INTERNET> gcalabria@LTERnet.edu
INTERNET> gil@sparc.ecology.uga.edu
Phone: 706-542-2968
706-542-5040 (FAX)
706-542-5691
Investigator: MEYER, JUDY L.
Electronic Mail: INTERNET> jmeyer@LTERnet.edu
INTERNET> meyer@zookeeper.zoo.uga.edu
Phone: 706-542-3344 (FAX)
706-542-3363
Investigator: SWANK, WAYNE T.
Electronic Mail: INTERNET> wswank@LTERnet.edu
Phone: 704-369-6768 (FAX)
704-524-2128
Tech Contact: CALABRIA, GILDO N.
Electronic Mail: BITNET> gcalabri@uga
INTERNET> gcalabria@LTERnet.edu
INTERNET> gil@sparc.ecology.uga.edu
Phone: 706-542-2968
706-542-5040 (FAX)
706-542-5691
Entry Author: MAJOR, GENE R.
Electronic Mail: INTERNET> MAJOR@NSSDCA.GSFC.NASA.GOV
NSI/DECNET> NSSDCA::MAJOR
Phone: (301) 441-4199
Information in this entry provided by UGA
Swank, W.T., and D.A. Crossley, Jr. 1988. 'Forest Hydrology and
Ecology at Coweeta'. Ecological Studies, Vol. 66. Springer-Verlag, New
York. 469 pp.
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