This is the old version of the JRN LTER website. Please visit https://lter.jornada.nmsu.edu.
|Data by Research Category|
Dataset: NPP Study: Annual ground-based photographs of 15 NPP sites beginning 1996
Beginning in 1996, annual photos are taken from each of the 4 corners of each of the 15 70-meter x 70-meter NPP sites between August and November depending on other research activity constraints. The plots were established in early months of 1989. From 1996-2002 photos were taken using 35mm color slide film. Beginning in 2003, digital photos were taken in JPG format. Occasionally, supplemental photos may be taken at the same time that provide additional habitat information at the landscape, patch, or plant species level
GPS coordinates for associated research sites, include datum (WGS84 should be used where possible), projection and coordinate systems): 15 NPP sites established in 1989 as part of LTER-II. Located on both USDA-ARS Jornada Experimental Range and NMSU Chihuahuan Desert Rangeland Research Center. Photos were taken from each of the 4 plot corners of 70m x 70 m plot. Coordinates using WGS84 of plot corners of 70m x 70m NPP plot: site corner longitude latitude C-CALI E -106.795640388 32.5124470483 C-CALI N -106.796298775 32.5129058308 C-CALI S -106.796253811 32.5119693683 C-CALI W -106.796938016 32.5124142090 C-GRAV NE -106.780623176 32.4902008203 C-GRAV NW -106.781323770 32.4899901228 C-GRAV SE -106.780379571 32.4896098398 C-GRAV SW -106.781079198 32.4894152274 C-SAND E -106.789417484 32.5153454739 C-SAND N -106.789923313 32.5158121631 C-SAND S -106.789968536 32.5149213058 C-SAND W -106.790480424 32.5153798814 G-BASN NE -106.786522655 32.5302100684 G-BASN NW -106.787279677 32.5305375492 G-BASN SE -106.786903220 32.5295691681 G-BASN SW -106.787668157 32.5299018658 G-IBPE NE -106.844254121 32.5895507485 G-IBPE NW -106.844997143 32.5895669749 G-IBPE SE -106.844265137 32.5889255501 G-IBPE SW -106.845010560 32.5889319365 G-SUMM NE -106.800259900 32.5139157166 G-SUMM NW -106.801033987 32.5142094872 G-SUMM SE -106.800617510 32.5132397266 G-SUMM SW -106.801386377 32.5135345878 M-NORT NE -106.787427632 32.6194440551 M-NORT NW -106.788223273 32.6193345774 M-NORT SE -106.787399513 32.6187655964 M-NORT SW -106.788143436 32.6187072931 M-RABB NE -106.795874060 32.6118950851 M-RABB NW -106.796723999 32.6118325540 M-RABB SE -106.795848222 32.6111644605 M-RABB SW -106.796692664 32.6111258562 M-WELL NE -106.850379177 32.6066254781 M-WELL NW -106.851120209 32.6066180815 M-WELL SE -106.850362521 32.6059900780 M-WELL SW -106.851115178 32.6059781654 P-COLL NE -106.789992586 32.5331165493 P-COLL NW -106.790249282 32.5332266000 P-COLL SE -106.790641476 32.5318260726 P-COLL SW -106.790909905 32.5319420170 P-SMAL NE -106.860631183 32.5406641788 P-SMAL NW -106.861333140 32.5404805827 P-SMAL SE -106.860405405 32.5400642465 P-SMAL SW -106.861104475 32.5398695940 P-TOBO NE -106.770660377 32.6683760042 P-TOBO NW -106.771387060 32.6682390486 P-TOBO SE -106.770495543 32.6677581043 P-TOBO SW -106.771227529 32.6676235606 T-EAST NE -106.740456746 32.5156172333 T-EAST NW -106.741177722 32.5156030118 T-EAST SE -106.740410947 32.5149906871 T-EAST SW -106.741152928 32.5149671150 T-TAYL NE -106.710762623 32.5501775160 T-TAYL NW -106.711493189 32.5502260565 T-TAYL SE -106.710802474 32.5495439365 T-TAYL SW -106.711547163 32.5495989578 T-WEST NE -106.743941591 32.5124927097 T-WEST NW -106.744678302 32.5125080574 T-WEST SE -106.743945035 32.5118641691 T-WEST SW -106.744693853 32.5118660633
35mm slide film format camera from 1996-2007 digital format camera from 2002-ONGOINGMethods:
Beginning in 1996, annual photos are taken of each of the 15 NPP sites between August and November depending on other research activity constraints. The plots were established in early months of 1989.
From 1996-2002 photos were taken using 35mm color slide film, initially Kodachrome 200 and later Ecktachrome Elite 100 when it became difficult to get the Kodachrome film developed because of the special processing required. Photos taken were with a wide angle 35mm lens. Beginning in 2002, digital photos were taken using zoom equivalent of 35mm lens. With the exception of a few years, one photo is taken from each corner of each plot looking diagonally across the plot. In 2007, 2008, and 2010, three photos were taken from each plot corner; 1 photo looking down each of the 2 plot boundary lines and 1 photo looking diagonally across the plot. The photo filename provides complete information about the photo. For those with multiple photos from a plot corner, a "-L" in the filename indicates it is of the Left boundary relative to the photographer facing inward at the plot corner. A "-R" indicates it is of the Right boundary. A "-D" indicates it is taken looking diagonally across the plot toward the opposite corner.
Digital filenames are fully descriptive of the study, plot, direction of photo, and date. Photo filename structure:
Where 1=zone: identifies the dominant vegetation zone (2 grass; 3 shrub): C=creosotebush;
G=black grama grassland; M=mesquite dune; P=playa grassland;T=tarbush
2=site: The last 4 letters are the site designation code:
BASN CALI COLL EAST GRAV IBPE NORT RABB SAND SMAL SUMM TAYL TOBO WELL WEST
3= general direction of view
4= direction of photo relative to plot from photographer's perspective
5-6-7 = month-day-year of phone
8 = time photo was taken (hours:minutes)
Occasionally, supplemental photos may be taken at the same time to provide additional habitat information at the landscape, patch, or plant species level. These filenames follow the same general format as above but in place of photo direction, there is descriptive information, such as a 4-letter species code with a floristic code.