J.P. Davis

University of Georgia Department of Botany Athens Georgia 30602 USA

(706) 542-1837 davis@dogwood.botany.uga.edu http://coweeta.ecology.uga.edu Bruce Haines

University of Georgia Department of Botany Athens Georgia 30602 USA

(706) 542-1837 haines@dogwood.botany.uga.edu http://cwt33.ecology.uga.edu/piprofiles/pro_haines.html The lengths of fine root segments visible in photographs of roots growing against the windows of minirhizotron boxes were measured. Photographs were taken of 12 rectangular frames (dimensions 1.67 x 1.25) designated for repeated sampling within the window of a minirhizotron boxes. These photographic images were digitally analyzed to determine the length of root segments growing within these frames against the window. Coweeta LTER fine root dynamics fine root production gradient analysis minirhizotron 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/summary1026.html WS18 and WS27 1994-07-01 1995-07-01 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 1026.csv 1026.csv 1 \n \n column , http://cwt33.ecology.uga.edu/data/1026.csv Year Year Year when data was collected YYYY None Missing Value Month Month Month when data was collected MM None Missing Value Day Day Day when data was collected DD None Missing Value Site Site Site ID where data was collected Site ID where data was collected None Missing Value Box Box minirhizotron boxes Id minirhizotron boxes Id None Missing Value Frame Frame Frame ID where lenghts were measured Frame ID where lenghts were measured None Missing Value Root_ID Root_ID Identification tag for each root Identification tag for each root None Missing Value Type Type Code to describe the type of root or measure characteristic 1 not specified by researcher 2 White 3 Brown 4 Missing 5 Unknown 6 Placeholder for dates prior to first observation None Missing Value RL RL Root length dimensionless real None Missing Value