Photo Gallery
Some selected photos from LTAR sites
UCB Pratt
GACP Tifton GA Little River WQ sampling 2
Steers are fit with GPS collars and pedometers, which are used to assess livestock movement and grazing activity
Archbold 2016 meeting – Image 1
Dinku
SP #13 hyperspectral data from native prairie. Collecting data for analysis of forage biomass and quality from Common Experiment native prairie site.
Carbon dynamics, including net ecosystem exchange, litter fall, soil respiration, plant productivity and related water uptake, are monitored along an elevational gradient. This phenocam view is of the lowest elevation, Wyoming big sagebrush, site. Snow is common, but ephemeral during the winter.
Sensor-based variable-rate N fertliziation of corn
UCB: Lysine app in LTAR Lysimeters-0693
Milutin taking gas samples
DJI flight
UCB: Lysine app in LTAR Lysimeters-0678
A cowboy herds cattle on an improved pasture
Research associate Kevin Kahmark and graduate student Di Liang discuss peak integration.
NGPRL micrometeorological station at LTAR field site-winter
PRHP instrumentation
SP canola in common experiment. Water, energy, and GHG fluxes from canola site in Common Experiment “GREEN Farm”
UCB: LTAR Eddy Tower (1 of 1)
Study of grazing behavior in LTAR native prairie pasture Common Experiment site.
Sampling from large frame
UCB: Lysine app in LTAR Lysimeters-0664
NGPRL micrometerorological station at LTAR field site-summer.
El Reno
GACP Tifton GA Eddy FluxStation
KBS LTER researcher Kevin Kahmark works on the automated greenhouse gas sampling system, part of the KBS LTER biofuels experiment; Photo Credit: K.Stepnitz, Michigan State University
Swamp buggy tour at the MAERC site
Collecting consumed forage from canulated steer as part of an intensive campaign of the NIFA-funded Grazing CAP. Collaborators: SP LTAR, ARS Bushland, ARS Woodward, University of Oklahoma, Oklahoma State University, the Noble Research Institute.
Tour group gets an amphibian talk
KBS LTER investigator Kevin Kahmark analyzes greenhouse gas samples in the lab; Photo Credit: K.Stepnitz, Michigan State University
Ian Leslie, USDA-ARS Physical Scientist, taking deep core soil samples at Cook West for baseline soil characterization.
CMRB replicated plots August 2017
GPS collar to monitor grazing patterns of beef cow on native praire pasture. Southern Plains LTAR, USDA ARS, El Reno, Oklahoma. (Photographer: Rick Todd).
CPER Asprirational
JER LTAR common experiment veg sampling
UCB: LTAR Manure injection with hose (1 of 1)
Outreach at the University of Florida
Researcher Kevin Kahmark adjusts fittings on automatic gas sampling chamber.
Ogletree
Bosch 043
The American pronghorn is a common ungulate at the Central Plains Experimental Range (Photo by M. Lindquist)
Reynolds Creek at Tollgate weir defines an area of about a quarter (55 km²) of Reynolds Creek Experimental Watershed almost entirely comprised of the upper elevations that receive the greatest annual precipitation which predominately falls as snow. Elevations range from 1410 m to 2241 m. Vegetation is primarily sagebrush rangelands with small stands of Douglas fir (Pseudotsuga menziesii), aspen (Populus spp.), and Alpine Fir (Abies lasiocarpa) at the higher elevations
Prescribed burning is used a management strategy to increase vegetation structure heterogeneity in the landscape at the Central Plains Experimental Range
Clipping aboveground biomass from a Central Plains Experimental Range long-term research plot
UCB: LTAR Manure injection (2 of 2)
A pasture burn with an Eddy Flux tower in the background
DJI flight
Sensor-based variable-rate N fertilization of wheat
Field Researchers at water level monitoring station
KBS Flux Tower 3. GLBRC/LTER scientist Terenzio Zenone checks the carbon dioxide flux tower on a GLBRC / KBS LTER switchgrass field (Marshall Farm); Photo Credit: B. Zenone, Michigan State University
Large field day crowd learning about the Collaborative Adaptive Rangeland Management experiment (part of the LTAR Common Experiment) at the Central Plains Experimental Range
KBS Flux Tower 1
Harvesting by ASP field weir
WGW Flume One
Two gas frames on either side of corn plants
Milutin measuring soil moisture in corn field
Winter 2016 CFG LTAR Input_Cropped
Gathering input from the NGPRL Customer Focus Group about teatment designs for LTAR Common Experiment
Baseline soil sampling at LTAR field site
UCB: Lysine app in LTAR Lysimeters-0688
Research technician Matt Dornan collecting greenhouse gas samples in the early successional field plots of the KBS LTER/GLBRC Biofuels research program, Photo Credit: K. Stepnitz, Michigan State University KBS LTER
Emptying the rumen vac used for evaluating quantity and quality of forage intake of grazing beef cattle. Southern Plains LTAR, USDA ARS, El Reno, Oklahoma. Partially funded by: USDA-NIFA #2013-69002-23146.
A plant diversity plot at ArchboldUF_RCREC
Small Flume and Box
Sorting through harvested vegetation
Establishing plot corners for the LTAR plot-scale experiment.
Corn at peak biomass at LTAR field site.
ABOUT LTAR
The USDA Agricultural Research Service (ARS) Long-Term Agroecosystem Research network consists of 18 Federal and university agricultural research sites with an average of over 50 years of history. The goal of this research network is to ensure sustained crop and livestock production and ecosystem services from agroecosystems, and to forecast and verify the effects of environmental trends, public policies, and emerging technologies.