+------------------------------------------------------------------+ | JORNADA LTER | | New Mexico State University | | Data Set Documentation Form | +------------------------------------------------------------------+ All Jornada Desert Site NSF/LTER data sets must be documented on the following form. This applies to any data set intended for permanent archiving. All raw data sets collected under the auspices of the Jornada NSF/LTER Program will be described by the following standardized form. Information that is not available at this time, must be included when available. For these fields, enter . For fields that will not have information, enter . See data manager for any questions regarding this form. -------------------------------------------------------------------- Dataset ID: DSL2002044 Project ID: PRL2002038 1) Data set access (RESTRICTED or UNRESTRICTED): --------------------------------------------- UNRESTRICTED 2) Data set title: --------------- NPP quadrat biomass by species and season 3) Project title: -------------- Spatial and Temporal Patterns of Net Primary Production in Chihuahuan Desert Ecosystems 4) Responsible investigator(s): ---------------------------- Debra Peters (2004 - ongoing) Laura F. Huenneke (1989 - 2003) 5) Date data collection commenced (mm/dd/yyyy): -------------------------------------------- spring 1989 (04/1989) 6) Date data collection terminated (mm/dd/yyyy or ONGOING): -------------------------------------------------------- ONGOING 7) Expected duration of study: --------------------------- 10 years minimum 8) Frequency of measurement: ------------------------- Three times per year, February, May, and October 9) Researchers: (Personnel who will be obtaining data and who would need to be contacted directly if there is a problem in the raw data): ---------------------------------------------------------------- varies; LTER field technicians plus seasonal hires, under supervision of John Anderson 10) Methods of recording (field data sheets, instrumental, etc.): ---------------------------------------------------------------- Data set is produced by SAS program that processes field data sets (NPPQyys.DAT), as described below. 11) Site location (Describe in sufficient detail that the site can be relocated): ---------------------------------------------------------------- Fifteen sites (3 in each of 5 ecosystem types) were selected for monitoring of NPP. Sites, abbreviations, and location summarized here and on LTER site map; directions are from stone pillars / gate marking entrance to Jornada Experimental Range, 6.6 mi north of US Hwy 70, east of Las Cruces, on North Jornada Road: Creosote - Caliche C-CALI From stone pillars, go 4.1 mi north to South Well. Turn left, drive 3.4 mi to College Ranch HQ. Turn left, drive south 1.3 mi (going through gate and crossing LTER transects); turn right (this is 2nd right) and proceed 0.3 mi. Turn left on small track; site is on right (uphill) of road, 70 m from turn. Creosote - Gravel C-GRAV From stone pillars, go 4.1 mi north to South Well. Turn left, drive 3.4 mi to College Ranch HQ. Turn left, drive south 3.4 mi (going through gate and crossing LTER transects, passing Upper Trailer). Site is on left (E) of road. OR - from stone pillars, turn left and proceed 2.6 mi; turn right at gate and go 0.6 mi along power line road, then 0.4 mi along right fork. Site is on right (E) of road. Creosote - Sand C-SAND From stone pillars, go 4.1 mi north to South Well. Turn left, drive 3.4 mi to College Ranch HQ. Turn left, drive south 1.6 mi (going through gate and crossing LTER transects). Site is on left (E) of road. Grassland - Basin G-BASN From stone pillars, go 4.1 mi north to South Well. Turn left, drive about 1 mi; park in pull-off on left adjacent to fence. Enter fence through gate; site is uphill about 50 m. Grassland - IBP G-IBPE From stone pillars, go 4.1 mi north to South Well. Take 2nd left (i.e., AFTER the well) and drive 8 mi (this is SW boundary of Exp. Range). IBP exclosure is on left of road 0.2 mi after it turns north away from boundary. OR - from stone pillars, go 10.2 mi north to JER HQ; past shop area, turn left and go 6.4 mi to West Well. Turn left (S) and go 1.4 mi to exclosure. Grassland - Summerford G-SUMM From stone pillars, go 4.1 mi north to South Well. Turn left, drive 3.4 mi to College Ranch HQ. Turn left, drive south 1. mi (going through gate and crossing LTER transects). Turn right (this is 1st right), drive 0.5 mi to power line road, turn left. Site is 0.3 mi from turn, uphill from power line at base of rocks. Mesquite - North M-NORT From stone pillars, go 10.2 mi north to JER HQ; past shop area, turn left and go 2.4 mi to junction with pipe line road, turn right. Proceed 0.6 mi N. Park; site is located about 400 m to west inside fenced exclosure. Mesquite - Rabbit M-RABB From stone pillars, go 10.2 mi north to JER HQ; past shop area, turn left and go 3.4 mi to Rabbit Rain Gauge parking area. Site is to north (left) of road, about 75 m, inside fenced exclosure. Mesquite - West M-WELL From stone pillars, go 10.2 mi north to JER HQ; past shop area, turn left and go 6.4 mi to West Well. Stay on road straight past well; site is about 150 m west of well, on right of road. OR - from IBP grassland exclosure, drive 1.4 mi north, turn left at West Well, site is about 150 m from well. Playa - College P-COLL From stone pillars, go 4.1 mi north to South Well. Turn left, drive about 2.5 mi to Lower Trailer (on left); park there and continue on foot along road to stiles over fence on right. Concrete block paths lead to playa. NPP grid is in western portion of fenced area of playa, just east of College Ranch HQ and pasture. Playa - Small P-SMAL From stone pillars, go 4.1 mi north to South Well. Turn left, drive about 3.4 mi to College Ranch HQ. Proceed through gate and HQ area; road jogs north and then heads west again. Proceed 3.8 mi from HQ; take small road on left, downslope 0.4 mi (through gate) to playa. Playa - Tobosa Tank P-TOBO From stone pillars, drive 10.2 mi north to JER HQ. Jog to right past shop, continue north 3.1 mi. Site is to right of road in fenced portion of large depression. Tarbush - East T-EAST From stone pillars, drive 2.6 mi north. Site is on right of road (E), in fenced area. Tarbush - Taylor T-TAYL From stone pillars, go 4.1 mi north. Turn right just before South Well. Take jog to left (N) across cattle guard, proceed east 2.3 mi. Site is on right (S) of road about 20 m in fenced area. Tarbush - West T-WEST From stone pillars, go 2.4 mi north. Site is on left (W) of road, in fenced area. Each site is a grid of 49 quadrats, each 1 m x 1 m, located 10 m from one another in a 7 x 7 square (quadrats make up a 60 m x 60 m square with 10 m buffer zones around boundary). Exception is P-COLL, where limited space forced us to use a 3 x 16 arrangement (48 quadrats). 12) Data set description (State the hypothesis and / or objectives which collection of data set addresses): ---------------------------------------------------------------- These data sets contain calculated aboveground biomass values, by species, for each quadrat in each site for a given season. They are constructed (as outlined below) from the field data which are measurements of the physical dimensions (horizontal cover, vertical height) of plants or plant parts in the quadrats. Objective is to monitor patterns (both temporal and spatial) of aboveground biomass across a range of ecosystem types; to allow the estimation of net primary production and its variability in those ecosystems; and to provide a quantitative description of plant community structure over time in those ecosystems. 13) Attributes measured: ------------------------------------------------------------------------- Variable Name example: AIRMAX Name used in data set header. Variable Format example: C = character (C3: Three characters [XXX]) I = integer (I2: Integer with two places [##]) F = floating point (F4.2: Total places with decimal point = 4, with 2 decimal places. [#.##]) Variable Mask example: mm/dd/yyyy Date where mm=month, dd=day, yyyy=year Exception Value Codes format: [code] = [description] example: 'Q' = questionable data Code = code (surrounded by single quotes) Note: Equal signs (=) are used to separate code and description. Note: Enter multiple Exception Value Codes on separate lines. Acceptable Value Type examples: defined list undefined list range defined list of ranges undefined list of ranges complex external list Acceptable Value Codes format: [code] = [description] example: C = Creosotebush Code = code Note: Equal signs (=) are used to separate code and description. Note: Enter multiple Exception Value Codes on separate lines. Note: Equal signs (=) are used to separate values and commas (,) are used to separate multiple value sets. Ranges of acceptable values are separated by a dashes. Lists of acceptable values are separated by commas. Asterick symbols (*) are reserved to indicate external lookup file listing. ------------------------------------------------------------------------- variable name: SEASON attribute description: Filename and season , where NQBIO=NPP quad biomass, yy = year, and s = season (S = spring, F = fall, W = winter) measured units: N/A start column position: 1 variable format: C9 variable mask: N/A exception value codes: N/A acceptable value type: N/A acceptable value codes: N/A variable name: DATE attribute description: Date data were collected, where mm=month, dd=day, and yy=year measured units: N/A start column position: 10 variable format: C6 variable mask: mmddyy exception value codes: N/A acceptable value type: N/A acceptable value codes: N/A variable name: Z attribute description: vegetation zone/ecosystem type measured units: N/A start column position: 17 variable format: C1 variable mask: N/A exception value codes: N/A acceptable value type: defined list acceptable value codes: C = creosote bush G = black grama grassland M = mesquite P = grassy playa T = tarbush variable name: SITE attribute description: Research site codes: CALI, GRAV, SAND (3 C sites) BASN, IBPE, SUMM (3 G sites) NORT, RABB, WELL (3 M sites) COLL, SMAL, TOBO (3 P sites) EAST, TAYL, WEST (3 T sites) measured units: N/A start column position: 19 variable format: C4 variable mask: N/A exception value codes: N/A acceptable value type: defined list acceptable value codes: CALI = Caliche creosote bush site GRAV = Gravel creosote bush site SAND = Sand creosote bush site BASN = Basin grassland site IBPE = IBP grassland site SUMM = Mt. Summerford grassland site NORT = North mesquite site RABB = Rabbit mesquite site WELL = Well mesquite site COLL = College playa site SMAL = Small playa site TOBO = Tobosa tank playa site EAST = East tarbush site TAYL = Taylor tarbush site WEST = West tarbush site variable name: Q attribute description: Quadrat number measured units: N/A start column position: 24 variable format: I2 variable mask: N/A exception value codes: N/A acceptable value type: undefined list acceptable value codes: 1-49 variable name: SPP attribute description: 4 or 5 letter plant species acronym. See Jornada Plant Species List. measured units: N/A start column position: 27 variable format: C5 variable mask: N/A exception value codes: N/A acceptable value type: external list acceptable value codes: see Jornada Plant Species List for acceptable values variable name: FORM attribute description: Plant growth forms as in Jornada Plant Species List. measured units: N/A start column position: 33 variable format: C5 variable mask: N/A exception value codes: N/A acceptable value type: external list acceptable value codes: see Jornada Plant Species List for acceptable values variable name: P attribute description: Photosynthetic carbon pathway (C3,C4,CM) C3 = C3 carbon pathway C4 = C4 carbon pathway CM = CAM carbon pathway measured units: N/A start column position: 39 variable format: C2 variable mask: N/A exception value codes: . = Missing value acceptable value type: external list acceptable value codes: see Jornada Plant Species List for acceptable values variable name: VOLUME attribute description: Volume summed by species (% cover = cm*cm) * height or each plant or part, summed within a quadrat measured units: cm3 start column position: 43 variable format: F12.2 variable mask: N/A exception value codes: N/A acceptable value type: N/A acceptable value codes: N/A variable name: CUM CVR attribute description: Cumulative cover summed by species within a quadrat (sum of percent covers, where 1% cover = 100 cm2 on a 1 m2 quadrat), percent cover = cm*cm measured units: cm2 start column position: 56 variable format: F9.2 variable mask: N/A exception value codes: N/A acceptable value type: N/A acceptable value codes: N/A variable name: BIOMASS attribute description: Aboveground live biomass, dry weight measured units: grams start column position: 66 variable format: F12.3 variable mask: N/A exception value codes: N/A acceptable value type: N/A acceptable value codes: N/A 14) Methodology (Provide sufficient detail such that an unaware reader could repeat the described data collection procedures.) ---------------------------------------------------------------- See documentation for NPP project for description of field sampling methods, site locations, etc. The quadrat data from field sampling (NPPQxxy.dat; see dataset documentation) are used as input to SAS programs (NQBIOxxy SAS) that calculate the volume of each plant part in each quadrat as a rectangular volume (cm3) from the cover and height measurements; sum the volume of all plant parts for a species within a quadrat; use species-specific (and where appropriate site and/or season-specific) regressions to calculate aboveground live biomass for each species in each quadrat; and write a summary data file as output (the NQBIOxxy DAT files) that list the total cover, the total volume, and the calculated biomass of each species in each quadrat for each site. 15) Key literature (Citations that describe sampling procedures, [reference of a published paper, thesis, etc.]): ---------------------------------------------------------------- Methods described and results (1989 - 1994) summarized in: Huenneke, Muldavin, Anderson, & Schlesinger, in review. Spatial and temporal variation in aboveground biomass and net primary production in Chihuahuan desert ecosystems. 16) Keywords (keywords that describe data set; maximum of 10): ---------------------------------------------------------------- vegetation, plant species, canopy cover, biomass, primary productivity 17) Treatment of data: (List any programs used in analysis of the data): [Note: Programs should be appended and stored with this form.] ---------------------------------------------------------------- As explained above, NQBIOxxy SAS used to produce these files. 18) Associated computer accounts: ---------------------------------------------------------------- 19) Files associated with this data set: ------------------------------------------------------------------------- File Type Codes: Type Code Definition ---- ---------- MD Metadata files DS Data files DE Data entry, verification, and analysis files OT Other (Any other related files) File Format Codes: ASCII, BINARY ------Metadata files------------------------------------ file type: MD file name: NPPVEG.PRJ description: Project documentation file format: Text file format type: ASCII file type: MD file name: NPPBIOMA.DSD description: Data set documentation file format: Text file format type: ASCII ------Data files---------------------------------------- file type: DS file name: NQBIO89S.DAT description: Quadrat biomass, spring 1989, by species file format: Text file format type: ASCII file type: DS file name: NQBIO89F.DAT description: Quadrat biomass, fall 1989, by species file format: Text file format type: ASCII file type: DS file name: NQBIO90W.DAT description: Quadrat biomass, winter 1990, by species file format: Text file format type: ASCII file type: DS file name: NQBIO90S.DAT description: Quadrat biomass, spring 1990, by species file format: Text file format type: ASCII file type: DS file name: NQBIO90F.DAT description: Quadrat biomass, fall 1990, by species file format: Text file format type: ASCII file type: DS file name: NQBIO91W.DAT description: Quadrat biomass, winter 1991, by species file format: Text file format type: ASCII file type: DS file name: NQBIO91S.DAT description: Quadrat biomass, spring 1991, by species file format: Text file format type: ASCII file type: DS file name: NQBIO91F.DAT description: Quadrat biomass, fall 1991, by species file format: Text file format type: ASCII file type: DS file name: NQBIO92W.DAT description: Quadrat biomass, winter 1992, by species file format: Text file format type: ASCII file type: DS file name: NQBIO92S.DAT description: Quadrat biomass, spring 1992, by species file format: Text file format type: ASCII file type: DS file name: NQBIO92F.DAT description: Quadrat biomass, fall 1992, by species file format: Text file format type: ASCII file type: DS file name: NQBIO93W.DAT description: Quadrat biomass, winter 1993, by species file format: Text file format type: ASCII file type: DS file name: NQBIO93S.DAT description: Quadrat biomass, spring 1993, by species file format: Text file format type: ASCII file type: DS file name: NQBIO93F.DAT description: Quadrat biomass, fall 1993, by species file format: Text file format type: ASCII file type: DS file name: NQIOB94W.DAT description: Quadrat biomass, winter 1994, by species file format: Text file format type: ASCII file type: DS file name: NQBIO94S.DAT description: Quadrat biomass, spring 1994, by species file format: Text file format type: ASCII file type: DS file name: NQBIO94F.DAT description: Quadrat biomass, fall 1994, by species file format: Text file format type: ASCII file type: DS file name: NQIOB95W.DAT description: Quadrat biomass, winter 1995, by species file format: Text file format type: ASCII file type: DS file name: NQBIO95S.DAT description: Quadrat biomass, spring 1995, by species file format: Text file format type: ASCII file type: DS file name: NQBIO95F.DAT description: Quadrat biomass, fall 1995, by species file format: Text file format type: ASCII file type: DS file name: NQIOB96W.DAT description: Quadrat biomass, winter 1996, by species file format: Text file format type: ASCII file type: DS file name: NQBIO96S.DAT description: Quadrat biomass, spring 1996, by species file format: Text file format type: ASCII file type: DS file name: NQBIO96F.DAT description: Quadrat biomass, fall 1996, by species file format: Text file format type: ASCII file type: DS file name: NQIOB97W.DAT description: Quadrat biomass, winter 1997, by species file format: Text file format type: ASCII file type: DS file name: NQBIO97S.DAT description: Quadrat biomass, spring 1997, by species file format: Text file format type: ASCII file type: DS file name: NQBIO97F.DAT description: Quadrat biomass, fall 1997, by species file format: Text file format type: ASCII file type: DS file name: NQIOB98W.DAT description: Quadrat biomass, winter 1998, by species file format: Text file format type: ASCII file type: DS file name: NQBIO98S.DAT description: Quadrat biomass, spring 1998, by species file format: Text file format type: ASCII file type: DS file name: NQBIO98F.DAT description: Quadrat biomass, fall 1998, by species file format: Text file format type: ASCII ------Data entry, verification, and analysis files------ file type: DE file name: description: SAS programs used to calculate biomass for species based on field measurements and regressions (where yy=year, s=season) file format: Text file format type: ASCII file type: DE file name: NppBiomassCalculations.zip description: NPP Regression coefficients and SAS procedures for calculating NPP biomass file format: Text file format type: ASCII ------Other (Any other related files)------------------- file type: OT file name: NPPQUAD.DSD description: NPP quad data set documentation for field data file format: Text file format type: ASCII file type: OT file name: PLNTALFA.LST description: Jornada plant species list file format: Text file format type: ASCII file type: OT file name: NPPHARV.DSD description: NPP reference harvest data set documentation (from which regressions for biomass were calculated) file format: Text file format type: ASCII 20) Comments (Include any comments here that more fully describe this data set): ---------------------------------------------------------------- 21) Data set documentation history log: ---------------------------------------------------------------- Data set title - NPP quadrat biomass by species and season Data set file name - NPPQDBIO.DSD ---------------------------------------------------------------- mm/dd/yyyy - Date of Comment Int - Initials of person making Comment JPA = John P. Anderson JL = Jim Lenz KR = Ken Ramsey Changes/Updates - List any changes made to document mm/dd/yyyy Int Changes/Updates ---------- --- ----------------------------------------------- 06/23/1997 JPA Form completed by investigator 07/01/1997 JPA Converted data set document file to new format. 01/14/1998 JPA Miscellaneous changes as per L. Huenneke 08/30/1999 JPA Updated 1989-1994 data files and added 1995-1998 as per L. Huenneke 06/13/2002 JL Added Dataset ID and Project ID sections. 07/31/2003 JPA Unrestricted as per Laura Huenneke. 08/30/2004 KR Changed format for Attributes and Associated Files section. Moved Dataset and Project IDs to top of form. Removed Missing/Questionable data section and incorporated into Attributes section. Updated Associated Files section. 05/06/2005 KR Added NPP Regression compressed file to Associated Files section. 01/30/2006 KR Changed FORM attribute Variable Format from C6 to C5. Changed P attribute Variable Format from C3 to C2 and updated permitted value CAM to CM to match data file. Changed VOLUME attribute Variable Format from F6.0 to F12.2 to match data file. Changed CUM CVR attribute Variable Format from F5.1 to F9.2 to match data file. Changed BIOMASS attribute Variable Format from F6.1 to F12.3 to match data file. Added start column position numbers for all attributes. Added to P attribute variable description. 11/19/2007 JPA Updated Responsible Investigator. ------------------------------------------------------------------- END OF DATA SET FILE -------------------------------------------------------------------