Wayne Swank

USDA Forest Service Coweeta Hydrologic Lab 3160 Coweeta Lab Road Otto NOrth Carolina 28763 USA

(828) 524-2128 wswank@sparc.ecology.uga.edu wswank@fs.fed http://cwt33.ecology.uga.edu/piprofiles/pro_swank.html To investigate long term forest ecosystem responses to disturbance and stress along an elevational gradient, five plots were established as follows: xeric oak-pine (782 m), cove hardwood (795 m), low elevation mixed oak (865 m), high elevation mixed oak (1001 m), and northern hardwoods (1347 m). Phenomena being studied in these plots include: climatology, nutrient dynamics, decomposition, vegetation productivity and population dynamics, and below-ground processes. As part of study on nutrient dynamics, throughfall was sampled weekly and concentrations and fluxes were examined from each of the five gradient plots. Throughfall is sampled from 6 collectors at each gradient site, totaling 30 samplers. Samplers consist of a V-shaped aluminum trough 2m long by 15cm wide with a spout nipple at one end. The trough is covered with aluminum insect screen to keep out leaf litter and insects and is installed on iron supports at a slight tilt from level to improve sample flow. Tygon tubing 1.59cm inside diameter (5/8 inches) is connected to the spout nipple and extends through the cap of a 20 liter collection jug. Coweeta LTER gradient throughfall thrufall nutirent Must adhere to the Coweeta LTER Data Policy (See http://coweeta.ecology.uga.edu/webdocs/3/static/datapolicies.html). http://cwt33.ecology.uga.edu/summaries/summary1012.html WS18 and WS27 1992-07-01 1997-11-01 Coweeta LTER Information Manager

Institute of Ecology University of Georgia Athens Georgia 30602 USA

(828) 524-2128 Ted Gragson

Institute of Ecology University of Georgia Athens Georgia 30602 USA

tgragson@earthlink.net principalInvestigator James Vose

Institute of Ecology University of Georgia Athens Georgia 30602 USA

jvose@fs.fed.us principalInvestigator Brian Kloeppel

Institute of Ecology University of Georgia Athens Georgia 30602 USA

kloeppel@sparc.ecology.uga.edu principalInvestigator The Coweeta LTER Research Program has evolved since 1980 from a site-based to a site- and region-based project examining the effects of disturbance and environmental gradients on biogeochemical cycling, and the underlying watershed ecosystem processes that regulate and respond to those cycles. The objective for the 2002-2008 research is to advance scientific understanding of the spatial, temporal, and decision-making components of land use and land-use change in the southern Appalachian Mountains over the last 200 years, and forecast patterns into the future 30 years. This will be accomplished by addressing ecological and socioeconomic aspects of land-use change while continuing long-term studies of environmental gradients and natural disturbance regimes. The result will be a more complete understanding of ecological dynamics in the southern Appalachian Mountains that makes possible the development of reasonable forecasts of its future ecological state. | The guiding hypothesis for the proposed research is that the frequency, intensity, and extent of land use represents human decision-making in response to socioeconomic and bio-geophysical conditions with consequences that cascade through ecosystems. The research activities are organized into three initiatives: (1) Characterization of the Socio-Natural Template, (2) Ecosystem Responses to the Socio-Natural Template, and (3) Forecasting Ecosystem Responses to Changes in the Socio-Natural Template. The integrated scientific research will provide both a description as well as an explanation of the underlying causes of land use and the consequences of land-use change for southern Appalachian ecosystems and society. It thus recognizes the complexity of land use as a process and the research needs as defined in the LTER Program and the broader scientific community. National Science Foundation. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. uid=cwt,o=lter,dc=ecoinformatics,dc=org all public read 1012.csv 1012.csv 1 \n \n column , http://cwt33.ecology.uga.edu/data/1012.csv Collector Collector Data collector ID Data collector ID None Missing Value Site Site Site ID Site ID None Missing Value Collector2 Collector2 Data collector ID Data collector ID None Missing Value Year Year Year when data was collected YY None Missing Value Day Day Year when data was collected DD None Missing Value Month Month Year when data was collected MM None Missing Value Depth Depth Deph of water collected in the collector Deph of water collected in the collector None Missing Value Comments Comments Comments on the measurement Comments on the measurement None Missing Value