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113 results for “Coweeta Hydrologic Laboratory”
Hydrogeology, Geochemistry, and Groundwater Study within the Coweeta Hydrologic Laboratory, 2006-2010
The primary objectives of the study were to: (1) characterize the ground water geochemistry in a pristine, mountain setting underlain by felsic gneiss and evaluate changes over time and space within the local groundwater system; (2) evaluate the hydraulic communication between the shallow regolith and deeper bedrock flow systems and the local flow dynamics between ground and surface water in both recharge and discharge areas; (3) evaluate the regolith-bedrock transition zone and its role as a preferential groundwater flow pathway; (4) characterize aquifer properties in the regolith and bedrock in selected areas; (5) determine the age of groundwater and time of travel from a recharge area to a discharge area; and (6) track water level fluctuations over time, in response to fluctuations in evapotranspiration, rainfall, and seasonal climate.
Weather data from Screwdriver Knob, Coweeta Hydrologic Laboratory
This data set contains measurements of air temperature, relative humidity, wind speed, wind direction, PAR density, and rainfall from a site located on Screwdriver Knob,Coweeta Hyrdologic Laboratory, Otto, NC. Air temperature, relative humidity, wind speed, and PAR density are measured every 60 seconds with average, minimum, maximum, and discrete top of the hour values saved to the output data table hourly. Wind direction is measured every 60 seconds with the average value saved to the output data table every hour. Hourly rainfall is totalized and a continuous 24 hour rainfall value is calculated. Calculations for dew point, heat index, wind chill, and wind vector are calculated hourly and saved to the output data table.
Coweeta Hydrologic Laboratory and Basin Reference GIS data
Coweeta Basin reference GIS data that were either commissioned or produced by the USDA Forest Service Coweeta Hydrologic Laboratory or the Coweeta LTER starting in the late 1980s.
Seed bank densities across an environmental gradient from the Coweeta Hydrologic Laboratory from 1995 to 1998
We determined the distribution of seed bank densities of woody perennial species across 5 permanent vegetation plots. We found that the distribution of seeds in the soil was determined by the spatial location of parent trees at all sites, but that absolute densities varied significantly between plots.
Monthly data from Climate Station 1 (CS01), Coweeta Hydrologic Laboratory, Otto, NC, 1934-2018
This dataset contains base-line climatic information for the main climate station (CS01) at Coweeta Hydrologic Laboratory in Macon County, North Carolina, USA. The station is operated by the Southern Research Station, Forest Service, USDA. CS01 is also a cooperative station with the National Weather Service. Since May 1963 it has been located in a grassy field NW of the junction of Ball Creek and Shope Fork of Coweeta Creek. Previously CS01 was located about 100m SW of its current location. The current elevation is 685.5m (2249ft) at latitude 35-3-37.21N and longitude 83-25-49.02W. During the 1940s, forest re-growth was tolerated up to 150 feet from the station. In August 1949, the larger opening was reestablished. The high elevation precipitation gage is located in a forest opening on Mooney Gap at elevation 1362.6m (4475ft). Additional USDA Forest Service Data for this climate station can be found at this link: http://www.srs.fs.usda.gov/coweeta/tools-and-data/
Fine root dynamics along an elevational gradient in the southern Appalachian mountains in the Coweeta Hydrologic Laboratory from 1993 to 1994
The seasonal dynamics of root mass were measured on five gradient plots by harvesting roots.
Remeasurement of permanent hectare plots at Hocking College 1998 (Coweeta Hydrologic Laboratory) in 1998
Data was collected from six collectors. Statistical means were volume weighted.
Watershed 18 daily stream discharge, Coweeta Hydrologic Laboratory, Otto, NC, 1936-2018
Watershed 18 or Grady Branch is a northwest facing reference catchment encompassing 30.84ac (12.48ha) or .04819 sq. miles. The elevation ranges from 2382ft (726m) at the weir to 3258ft (993m). The average land slope is 52.5%, and the average channel slope is 18.9%. The channel is a total of 924ft (281.6m) long. Additional USDA Forest Service Data can be found at this link: http://www.srs.fs.usda.gov/coweeta/tools-and-data/
Watershed 27 daily stream discharge, Coweeta Hydrologic Laboratory, Otto, NC, 1946-2018
Watershed 27 or Hard Luck Creek is a north-northeast facing reference catchment encompassing 96.5 acres (39ha) or .15080 sq. miles. The elevation ranges from 3380ft (1061m) at the weir to 4770ft (1454m). The average land slope is 54.7%, and the average channel slope is 33.2%. The channel is a total of 3894ft (1187m) long. Additional USDA Forest Service Data can be found at this link: http://www.srs.fs.usda.gov/coweeta/tools-and-data/
Predatory impact of benthic fishes in an Appalachian stream at the Coweeta Hydrologic Laboratory in 1998
Streams are characterized by high degrees of patchiness that could influence the role of predators in these systems. Here we assess the impact of predatory benthic fishes on benthic macroinvertebrate density, biomass, and community structure at the patch scale in a fourth order stream in the southern Appalachians in 1998. We conducted this experiment from July to September 1998 in Ball Creek, a fourth order stream at the USDA Forest Service’s Coweeta Hydrological Laboratory, Otto, North Carolina. We tested the role of predation in two different patch types: patches inhabited by adult mottled sculpin (Cottus bairdi ) and random patches. We placed 30 basket pairs (one open to fish predation, and one from which fish predators were excluded) in the streambed at each patch type. We also tested for potential basket effects by setting up a basket control area.
Stem temperature in watershed 27 ridge climate 77 station plot at the Coweeta Hydrologic Laboratory from 1996 to 1999
Tree stem temperature is currently being collected to determine both diurnal and seasonal variation in tree stem temperatures for all species and sizes present at the Coweeta Watershed 27 Ridge Climate 77 Station Plot. The purpose of the data is to characterize the tree stem temperature regimes as they relate to tree stem respiration. Data will continue to be collected until approximately December 1997. Data will then be subsequently summarized and published.
Acclimation common garden microclimate at the Coweeta Hydrologic Laboratory from 1999 to 2002
These microclimate data are being collected at two common garden locations to quantify the natural ambient temperatures for air and soil. This project will support other physiological projects that have been or will be collected.
Direct and indirect effects of increased bedload on algal and detrital-based stream food webs at the Coweeta Hydrologic Laboratory from 1997 to 1999: Tile/ sediment addition experiment, Summer 1997; Chlorophyll, AFDM, inorganics (days 5-40)
Anthropogenic sedimentation poses a significant threat to stream ecosystems throughout the world. Increases in bedload (sediment transported and deposited on the stream bottom) can be especially detrimental for benthic communities. To examine how increased bedload directly and indirectly affects stream communities, we simultaneously manipulated sediment and top-down effects of macroconsumers (fishes and crayfish) in situ in two factorial experiments, one using tiles and one using leaf packs as sampling substrates. Bedload was increased by adding small amounts of sediment (2.5 x normal levels) to localized areas (0.25 m2) of an otherwise unimpacted stream. This increase in bedload had direct effects on basal resources in both the tile and leaf pack experiments. In the tile experiment algal composition was altered by sediment addition, while in the leaf pack experiment fungal biomass declined with sediment.
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