census

The late Dr. Clifford S. Crawford established the Sevilleta’s Schoolyard LTER Program which funds an educational outreach program known locally as the Bosque Ecosystem Monitoring Program (BEMP).  The major focus of the program is to monitor key indicators of structural and functional change in the Middle Rio Grande riparian cottonwood forest ('bosque') corridor through central New Mexico, including the Sevilleta National Wildlife Refuge.

Pinon Branch Demography Study at the Sevilleta National Wildlife Refuge, New Mexico (1989-1993)

Abstract: 

This project was designed to investigate the response of plant growth and reproduction to short- and long-term variation in biotic and abiotic environmental variables. Several perennial taxa, including tree (Juniperus monsperma and Pinus edulis), shrub (Larrea tridentata) and bunch grasses (Oryzopsis hymenoides (now Achnaterum hymenoides) and Sporobolus contractus) species, were monitored at 1-3 sites differing in elevation and topography as well as edaphic variables and annual precipitation. The sites represented optimal or marginal/transitional zones for particular species. Demographic measurements were made biannually, after the 'wet' (fall) and 'dry' (spring) seasons. For tree and shrub species, estimates of growth and reproduction were based on branch demography, with ten branch tips from 10-20 individuals per species per site repeatedly measured from 1989-1993.  For J. monsperma, P. edulis and L. tridentata, vegetative growth (i.e., branch growth) as well as reproduction were monitored. Additional measurements included needle length for P. edulis and leaf production, leaf size and branchlet production for L. tridentata. For grasses, basal diameter, leaf length and reproduction were monitored for 100 individuals per species per site.

This project, SEV006, contains only data on pinon branch demography.  Data on other variables and species is contained in SEV024, SEV025, SEV026, SEV027, and SEV028.

Core Areas: 

Data set ID: 

6

Additional Project roles: 

224

Keywords: 

Data sources: 

sev6_pinyondemography_20160303.txt

Methods: 

Tree Selection - Ten numbered pinon trees were randomly selected at each study site; five on the north slope of a canyon and five on the south slope.  Numbers were assigned to trees which were then sampled by random selection.

Branch Selection - Ten branches approximately 1.5 meters above the ground were chosen and assigned numbers (1-10).

Tag Placement - Tags were placed about six centimeters from the tip of a selected branch.

Blength - The length of the branch from the tag wire (or paint mark) to the branch apex.

Fascicles - The length of the most distal cluster of leaves on the branch, the present year's cohort of leaves.

Needle1 - The length, from tip to attachment point, of one needle in a cluster included in a length-with-fascicles measurement.

Needle2 - A measurement of second needle in a cluster.

Male - A measure of the length of a branch containing male cones. If the tagged branch diverged before reaching the apex, producing two or more male cones, the individual lengths were added together as one male cone branch length.

Female - The number of female cones on a measured branch.

Codes - The codes used for species in this study follow Kartesz abbreviation standards (Kartesz, J.T. 1994. A Synonymized Checklist of the Vascular Flora of the United States, Canada, and Greenland. Timber Press, Oregon). Codes consist of four-to-six characters and are alphanumeric .  A comprehensive list of all plant species found on the Sevilleta National Wildlife Refuge and their associated codes can be found on the Sevilleta Information Management System (SIMS) at:

/export/db/local/plant/lib/species_kartesz_codes_.lst.

Maintenance: 

I. Condensed log of activity of plant demography data:
  a. Individual documentations iniatiated 1989; Troy Maddux
  b. File (combined documentations) 31 August 1990; Troy Maddux
  c. Abstract (Written by Diane Marshall and Charles Wisdom) put in documentation 31 August 1990; Troy Maddux
  d. Documentation expanded 2 September 1990; Troy Maddux
  e. Concatenation of individual documentations iniatiated September 1990, completed 17 December 1990; Michelle Murillo
  f. File expanded into rdb file 17 December 1990; Michelle Murillo
  g. Rdb file checked, and errors eliminated 18 December 1990; Michelle Murillo
  h. KEYWORDS added 19 December 1990; James Brunt
  i. Random error checking completed 20 December 1990; Michelle Murillo
  j. File complete and archived 21 December 1990; Michelle Murillo & Greg Shore
 
     Documentation changed to reflect changes in datafile structure; 1 March 91 T. Maddux  

II. Detailed log of alterations/modifications of plant demography data:

This portion of the log contains details of all alterations and modifications applied to this file by Michelle Murillo. The file demography.dat was initiated in September 1990 by concatenating individual files into the demography.dat file. A generic header was devised to apply to all individual files. The header reads as such: date season site species station plant# branch# #1 #2 #3 #4 #5 #6 #7 #8, and the detailed description of the numbers 1-8 are listed in the documentation section of this file. The individual files were then modified to follow this header, which entailed rearranging of columns (generally the season, site, species, station, plant#, and branch#) and the addition of the date column. As the columns numbered 1-8 did not pertain to all individual files, non-applicables (na) were inserted where necessary. Other alterations included:

    1. Juniper 1989: Sepultura Canyon; addition of na's to presence/absence of male or female cones, depending on sex of tree, i.e. if tree was female then na's were inserted in the male column. Goat Draw; same as Sepultura Canyon
    2. juniper 1990: (Sepultura Canyon site has been discontinued) Goat Draw (season 1); orginal file contained x,y and --'s; which were converted to 0 (absence) and 1 (presence) and appropriate na's were inserted, depending on sex of tree Goat Draw (season 2); orginal file contained +'s for presence of cones; which were converted to 1 (presence) and appropriate na's were inserted depending on sex of tree.

        NOTE: In 1989 width of branch was measured, and in 1990 this measurement was no longer taken. (The orginal data sheets for 1989-2 are unavailable at the time of archiving, assumption is that this measurement applies to season 2 also ).  In 1990 the length of branchlet was measured which was not measured in 1989. (See documentation).
        NOTE: In 1989 (both seasons) the variable, number of branchlets, was not included. In 1990 the variable was added, but measurements of this variable was sporadic, occuring only in a few plants.

    3. grasses 1989/1990: All sites: addition of na's to branch#

Error checking was done as follows:

Two files, grasses 1990-season 1, and creosote 1990-season 1, had not been entered at the time of concatenation of individual files, and were therefore entered by Michelle Murillo. These two files were error checked by Michelle Murillo by visual checking of original data sheets with the files on 18 December 1990. On 17 December 1990, the expand program was applied to the demography.dat file and placed into the demography.rdb file. The rdb file was then checked for various errors, and the elimination of these errors were completed on 18 December 1990. On 19-20 December 1990, random error checking was conducted by using 'Tables for Statistical Data-Analysis'. One hundred and fifty entries were checked and approximiately 45 percent of the numbers were from 1989-season 2, and because the data sheets were unavailable, the entries were not error checked. On 23 December 1990, visual checking with the original data sheets was conducted for an overall check.

File initiated June 1991: MLM
season 1 entered: MLM
season 2 entered: KPM
Black Butte, season 2 entered and error checked, 7 Jan 1992: MLM
data entry complete 25 October 1991:  KPM
data error checking completed 8 November 1991:  KPM

Documentation updated (New people and times added) on 29 Jan 1992 and inserted into data file by Troy Maddux.

  1992 log

    * Put the 1992 data in the data base on 22 Oct 1992 Troy Maddux.


THE FOLLOWING IS THE LOG FOR THE SPRING 1992 DEMOGRAPHY DATA


    * File initiated by Troy Maddux 24 Aug 1992
    * Goat Draw PIED information entered by Michael Bradley
    * and sent to Troy Maddux Wed Aug 19 15:31:03 1992 and these
    * data added to this file by T. Maddux on 15 Oct 1992
    * Black butte data added to this file 15 Oct 1992
    * Many SPCO4 plants in plots 2 and 3 of Five Points had no
    * data for the inflorescence # so this was added (it was 0)
    * on 15 Oct 1992 by Troy Maddux
    * Removed extra '0' from rs SPCO4 #531-534 - 16 Oct 1992, T.M.
    * Pulled \doc from 1991 demography data to change for 1992 data 16 Oct 1992; T.M.
    * Who and When data were collected was added 20 Oct 1992; T.M.  

THE FOLLOWING IS THE LOG FOR THE FALL 1992 DEMOGRAPHY DATA
    *File initiated 16 Sep 1992 by Tiffany Cotlar
    *Data file from Tiffany Cotlar and a data file from Robin Abell combined; also blank lines removed from both files; this was done by Troy Maddux on 20 Oct 1992.
    *File initiated 16 Sep 1992 by Robin Abell
    *PIED #'s 9,13,23,15,17,36,41,42 by Robin Abell 16 Sep 1992
    *JUMO #'s 26,23,24,28,49,5,8,17,13,22,36,41,47,4,15,27,32,46,42
    * by Robin Abell 16 Sep 1992
    *LATR2 #'s (Five Points) 2,3,5,26 by Robin Abell 23 Sep 1992
    *SPCO4 #'s (Station B) 61,92,93,94,95,99,101,103,104,105,108,109
    * 109.1,110,110.1,111,112,112.1,122,125,126,127,130,148,149,402
    * by Robin Abell 23 Sep 1992
    *LATR2 #'s (Five Points) 90,92,96 by Robin Abell 24 Sep 1992
    *LATR2#'s (Rio Salado) 1,14,17 by Robin Abell 1 Oct 1992
    *changed typo: juno to JUMO; 20 Oct 1992, T.M.
    *added additional field to grass data to make the field # correct 20 Oct 1992, TM.

File submitted for archival 22 OCT 1992 - Troy Maddux

File initiated by Troy Maddux 22 Apr 1993 combining data entered by Ursula Bonhage, Roger Stupf, Christian Heierli, Marilyn Altenbach, and
Eric Scherff.
----------------------------------------------------------------------
*Data for:    
*        PIED 28, 32, 36
*    entered by Ursula Bonhage 14 Apr 1993.
----------------------------------------------------------------------
*Data for:
*        PIED 4, 5, 8, 9, 13, 15
* entered by M. Altenbach & E. Scherff 14 April 93.
----------------------------------------------------------------------
*Data for:
*        pinyon 17,22,23,24 and
* entered by  M. Altenbach & 16 April 93.
----------------------------------------------------------------------
* Data entered for:
*        PIED 26,27,41,42,46,47,49
* by eric and marilyn on 13 and 14 April 1993
----------------------------------------------------------------------
* Documentation taken from 91-92 archive data set and modified for this data set.  18 Oct 1993, by Troy Maddux.
* Filled in "Who" and "When" sections from the data sheets - Troy Maddux - 16 Nov 1993.
----------------------------------------------------------------------
****************************************
    1993 FALL DATA
****************************************
File for Black Butte orhy data created by Eric Scherff and Cynthia Gregoire on September 21, 1993. Data collected by Marilyn Altenbach and Eric Scherff on September 14, 1993
****************************************
File for Five Points Sporobolus information created by Cynthia Gregoire & Eric Scherff on 21 September 1993. Data collected by Marilyn Altenbach & Eric Scherff on 14 September 1993 and 15 September 1993. File appended by Eric Scherff and Cynthia Gregoire on 22 September 1993. Changed "nd" representing "no data" to "na" to be consistent with other data bases. - Troy Maddux - 8 Nov 1993.
****************************************
File for pinyons created by Eric Scherff on 10 September 1993 File appended by Eric Scherff on 15 September 1993 Data collected by M. Altenbach & E. Scherff on 9 September, 10 September, and 13 September.
****************************************
Different fall plant data put together into single archive file by Troy Maddux on 8 Nov 1993.
****************************************
Spring and Fall data put together in Archive File format 17 Nov 1993. by Troy Maddux - also changed nd's and dashes to na's.            
****************************************
9 Dec 1993 - Demography file contained all species - all but the pinyon information was taken from this file by Troy Maddux.
****************************************
10 Dec 1993 - Documentation section changed to reflect only pinyon and not other measured species (e.g. jumo, latr, orhy, and spco). Troy Maddux
****************************************
10 Feb 1994 - Documentation section compared to Doc. Manual and necessary changes made by Rosemary Vigil; Troy Maddux replaced four occurances of "na" with 0.
****************************************

14 March 1994. Separated the big demography-89-90 file into four parts; grass, pinyon, creosote, and juniper.  Rupal Shah went through and separated the file and edited the documentation.

* 3 Jan 1995 - replaced a couple of enigmatic X's with "na"'s - Troy Maddux.

3/19/98 - Changed species codes to Kartesz. K. Taugher
    - Added a final line to dataset of: "{END OF DATA}". K. Taugher
    - Updated metadata to reflect species code changes. K. Taugher

9/23/09 - Added Kartesz reference. K. Taugher

Additional information: 

1989: First Census - May 8,9,11 of 1989; Second Census - September 5 of 1989.

1990: First Census - This equals season  1 in the header for the data.  The data were collected from 27 Apr 1990 to 17 May 1990. Second Census - This equals season  2 in the header for the data. The data were collected from 5 Sep 1990 - 20 Sep 1990.

1991: First Census - 16 Apr 1991 - 15 May 1991. Second Census - 4 Aug 1991 - 13 Sep 1991.

1992: First Census - The first census was performed on the following dates: 15 Apr, 16 Apr, 22 Apr, 23 Apr, 27 Apr, 28 Apr, 29 Apr, 30 Apr, 1 May, 19 May, 21 May, 27 May, 28 May, 1 Jun, 2 Jun, 12 Jun 1992. Second Census - The second census was performed on 14-17 Sep, 22-24 Sep, 29 Sep, 5-7 Oct 1992.

1993: First Census - Goat Draw pinyon and juniper were measured on: 14 Apr; and 15 Apr 1993. Second Census - Goat Draw pinyon and juniper were measured on: 9 Sep; 10 Sep; and 13 Sep 1993.

The data for the first census (May) were collected by Ann Evans (Asst. Professor/UNM), Troy Maddux (Head Plant Tech/LTER), Sam Loftin (Graduate Student/UNM), Marikay Ramsey (Head Animal Tech/LTER), Joran Viers (Plant Tech/LTER), Michelle Murillo (Plant Tech/LTER), Jennifer Franklin (Plant Tech/LTER), Amy Shortess (Plant Tech/LTER).  The data for the second census (September) were collected by Troy Maddux (Head Plant Tech/LTER), Amy Shortess (Plant Tech/LTER), David Keller (Plant Tech/LTER).

1991: The data for the first census  (May) were collected by Roger Mongold (Plant Technician), Brad Swanson (Plant Technician), Joran Viers (Plant Technician), Kathleen McGee (Plant Technician), Sam Loftin (Graduate Student Technician), and Troy Maddux (Head Plant Technician).  The data for the second census (May) were collected by Jim Stanton (Plant Technician), Susan Prichard (Plant Technician), and Troy Maddux (Head Plant Technician).
 
1992: The data for the first census (Apr-Jun) were collected by Troy Maddux (Head Plant Technician) and the following plant technicians: Marilyn Altenbach, Michael Bradley, Melissa Chavez, Anthony Collier, Julie Knight, Ivan Ortiz, Amanda Persaud, Monica Valdez.  The data for the second census (Aug-Oct) were collected by Troy Maddux (Head Plant Technician), Robin Abell (Plant Technician), and Tiffany Cotlar (Plant Technician).

1993: SPRING CENSUS - Roger Stupf (Volunteer from Switzerland), Ursula Bonhage (Volunteer from Switzerland), Christian Heierli (Volunteer from Switzerland), Marilyn Altenbach (Field Crew Chief), Eric Scherff (Field Tech), Troy Maddux (Vegetation Studies Program Manager). FALL CENSUS - Cynthia Gregoire (Volunteer from Vermont), Marilyn Altenbach (Field Crew Chief), Eric Scherff (Field Tech).

Small Mammal Mark-Recapture Population Dynamics at Core Research Sites at the Sevilleta National Wildlife Refuge, New Mexico (1989 - present)

Abstract: 

This file contains mark/recapture trapping data collected from 1989-2012 on permanently established web trapping arrays at 8 sites on the Sevilleta NWR. At each site 3 trapping webs are sampled for 3 consecutive nights in spring and fall. Not all sites have been trapped for the entire period. Each trapping web consists of 145 rebar stakes numbered from 1-145. There are 148 traps deployed on each web: 12 along each of 12 spokes radiating out from a central point (stake #145) plus 4 traps at the center point. The trapping sites are representative of Chihuahuan Desert Grassland, Chihuahuan Desert Shrubland, Pinyon-Juniper Woodland, Juniper Savanna, Plains-Mesa Sand Scrub and Blue Grama Grassland.

Data set ID: 

8

Core Areas: 

Additional Project roles: 

517
518

Keywords: 

Methods: 

Sampling Design
Permanent capture-mark-release trapping webs were used to estimate density (number of animals per unit area) of each rodent species at each site. The method makes use of concepts from distance sampling, i.e., point counts or line-intercept techniques. The method makes no attempts to model capture-history data, therefore it was not necessary to follow individuals through time (between sessions). Distance sampling methods allow for sighting or detection (capture) probabilities to decrease with increasing distance from the point or line. The modeling of detection probability as a function of distance forms the basis for estimation. Trapping webs were designed to provide a gradient of capture probabilities, decreasing with distance from the web center. Density estimation from the trapping web was based on three assumptions:1. All animals located at the center of the web were caught with probability 1.0; 2. Individuals did not move preferentially toward or away from the web center; 3. Distances from the web center to each trap station were measured accurately. Each web consisted of 12 trap lines radiating around a center station, each line with 12 permanently-marked trap stations. In order to increase the odds of capturing any animals inhabiting the center of a web, the center station had four traps, each pointing in a cardinal direction, and the first four stations of each trap line were spaced only 5 m apart, providing a trap saturation effect. The remaining eight stations in a trap line were spaced at 10 m intervals. The web thus established a series of concentric rings of traps. Traps in the ring nearest the web center are close together, while the distances separating traps that form a particular ring increase with increasing distance of the ring from the web center. The idea is that the web configuration produces a gradient in trap density and, therefore, in the probability of capture. Three randomly distributed trapping webs were constructed at each site. The perimeters of webs were placed at least 100 m apart in order to minimize homerange overlap for individuals captured in the outer portion of neighboring webs.

Measurement Techniques

Each site containing three webs was sampled for three consecutive nights during spring (in mid May or early June) and summer (in mid July or early August for years 1989 to 1993, then mid September to early October for years 1994 through 2000). In that rodent populations were not sampled monthly over the study period, there is no certainly that either spring or summer trapping times actually captured annual population highs or lows. Based on reproductive data in the literature, an assumption was made that sampling times chosen represent periods of the year when rodents have undergone, and would register, significant seasonal change in density. During each trapping session, one Sherman live trap (model XLF15 or SFAL, H. B. Sherman Traps, Tallahassee, FL) was placed, baited with rolled oats, and set at each permanent, numbered station (four in the center) on each web, for a total 444 traps over three webs. Traps were checked at dawn each day, closed during the day, and reset just before dusk. Habitat, trap station number, species, sex, age (adult or juvenile), mass, body measurements (total length, tail length, hind foot length, ear length), and reproductive condition (males: scrotal or non-scrotal; females: lactating, vaginal or pregnant) were recorded for each initial capture of an individual. Each animal was marked on the belly with a permanent ink felt pen in order to distinguish it from other individuals during the same trapping session. The trap station number for an initial capture related to a particular trapping ring on a web and, therefore, to a particular distance from the center of the web. The area sampled by a ring of traps was computed based on circular zones whose limits are defined by points halfway between adjacent traps along trap lines; an additional 25 m radius was added to the outer ring of traps in order to account for homerange size of individuals caught on the outer ring.

Analytical Procedures
Area trapped and number of individuals caught for each ring of traps was the basis for estimating the probability density function of the area sampled. The program DISTANCE produced the estimators used to calculate density. Where sample size for a particular species and web was less than an arbitrarily chosen n=10, the number of individuals captured during that session was simply divided into the area of the web plus the additional 25 m radius (4.9087 ha). This dataset includes only the raw capture data.

Data sources: 

sev008_rodentpopns_20161027

Instrumentation: 

 

Sherman live traps: model XLF15 or SFAL, H. B. Sherman Traps, Tallahassee, FL

Maintenance: 

Trap sets require care and cleaning as well as proper storage. Otherwise, webs are made up of durable rebar and aluminum tags which only need repair if disturbed. Tools used in the field - scales and rulers, pouches, trap bags and ziplock supply must be maintained on hand at SevFS for trapping events.

Additional information: 

Additional Information on the personnel associated with the Data Collection / Data Processing

Sevilleta Field Crew Employee History

Chandra Tucker April 2014-present, Megan McClung, April 2013-present, Stephanie Baker, October 2010-Present, John Mulhouse, August 2009-June 2013, Amaris Swann, August 25, 2008-January 2013, Maya Kapoor, August 9, 2003-January 21, 2005 and April 2010-March 2011, Terri Koontz, February 2000-August 2003 and August 2006-August 2010, Yang Xia, January 31, 2005-April 2009, Karen Wetherill, February 7, 2000-August 2009, Michell Thomey, September 3, 2005-August 2008, Jay McLeod, January 2006-August 2006, Charity Hall, January 31, 2005-January 3, 2006, Tessa Edelen, August 15, 2004-August 15, 2005, Seth Munson, September 9, 2002-June 2004, Caleb Hickman, September 9, 2002-November 15, 2004, Heather Simpson, August 2000-August 2002, Chris Roberts, September 2001-August 2002, Mike Friggens, 1999-September 2001, Shana Penington, February 2000-August 2000.

*In fall 2013, the Grassland Core site was not able to be trapped due to government shutdown. 

Rabbit Population Dynamics in Chihuahuan Desert Grasslands and Shrublands at the Sevilleta National Wildlife Refuge, New Mexico (1992-present)

Abstract: 

This study explores the population dynamics of black-tail jackrabbits (Lepus californicus) and desert cottontail rabbits (Sylvilagus auduboni) in the grasslands and creosote shrublands of McKenzie Flats, Sevilleta National Wildlife Refuge. The study was initiated in January 1992, and continues quarterly each year. Rabbits are sampled via night-time spotlight transect sampling along the roads of McKenzie Flats once during winter, spring, summer, and fall. The route is 21.5 miles long. Measurements of perpendicular distance of each rabbit from the center of the road are used to estimate densities (number of rabbits per square kilometer) via Program DISTANCE. Results from January 1992 to May 2004 indicated that spring was the period of peak density period, with generally steady declines through the rest of the year until the following spring. Evidence of a long-term "cycle" (e.g., the 11-year-cycle reported for rabbits in the Great Basin Desert) does not appear in the Sevilleta rabbit populations.

Core Areas: 

Data set ID: 

23

Additional Project roles: 

280
281
282
283
284

Keywords: 

Purpose: 

The purpose of the study is to assess the dynamics of rabbit populations in the grasslands and creosote shrublands of the Sevilleta NWR. Rabbits are important herbivores in these habitats, and can influence net primary productivity and plant species composition. In turn, these animals also provide high-quality prey for many of the Sevilleta NWR's carnivores and birds of prey. Density data on rabbits can also be used to calculate herbivore pressure on the plant communities.

Data sources: 

sev023_rabbitpopns_20150310.txt

Methods: 

Sampling Design:

The rabbits are sampled along 21.5 miles of roadway that is broken up into four "legs" of varying lengths.

Leg A:Black Butte southward to Five Points (5.7 miles).

Leg B:Five Points eastward to the turnoff before Palo Duro Canyon (4.1 miles).

Leg C: Palo Duro turnoff northward to the old McKenzie Headquarters site (6.1 miles).

Leg D: McKenzie Headquarters site northwestward to Black Butte (5.6 miles).

Sample Unit:

Individual rabbit.

Frequency of Sampling:

Sampled one night per season, four seasons per year.

Technique Citations:

Buckland, S. T., D. R. Anderson, K. P. Burnham, and J. L. Laake.1993. Distance Sampling. Estimating abundance of biological populations. Chapman and Hall, New York.  446 pp.

Measurement Techniques: 

The rabbit surveys are conducted at night using spotlights positioned out each side of a pick-up truck. Surveys began one hour after sunset, when no trace of sunlight or dusk remained. Beginning in 1998, all surveys are conducted on or near the full moon.  

The truck is driven slowly (8-10 miles per hour) along the 21.5 mile circuit. Two (or more) observers stand in the bed and scan the left and right sides (respectively) of the road with spotlights, while the driver keeps watch for rabbits directly in front of the vehicle.  

During 1992, the spotlights were Q-Beam 500,000 candlepower spotting lights, with both flood and spot settings (spot settings were used during the rabbit sampling).  From 1993 through 1996, Q-Beam spotlights with 1,000,000 candlepower were used.  In 1997, new spotlights with 3,000,000 candlepower were used; these lights were set permanently on "flood", but illuminated distances previously reached by the spot settings of the less-powerful spotlights. SInce 2002, 2,000,000,000 candlepower spotlight gave been used.

In addition to the spotlights used by the standing observers in the bed of the pickup truck, two spotlights mounted on the pillar posts of the truck's cab are turned on and set for the roadsides ahead of the truck; these lights, coupled with the high-beam setting of the truck's headlights, illuminate the road in front of the truck for approximately 100 meters. When a rabbit is observed, one person's spotlight illuminates the spot at which the rabbit was first seen.  The second person's spotlight tracks the rabbit so it is not counted twice.  A meter tape is walked out from the center of the truck bed (i.e., the center of the road) perpendicular to the location at which the rabbit was first observed.  That distance is measured and recorded to the nearest meter. If a rabbit is observed in the middle of the road, the distance is recorded as zero.  

Beginning in Jan. 2000, perpendicular distances are measured using a laser range finder, with an accuracy of 1 meter. Accuracy level is checked prior to sampling. Generally, rabbits within 100 meters of the road can be seen relatively clearly with all three types of spotlights.

Other data recorded includes (1) the odometer reading in miles from the beginning of the sample at Black Butte (odometers are reset to zero at the start of the sample), (2) whether the rabbit was on the left or right side of the road, and (3) the species of rabbit.  Incidental data on weather conditions is also noted including presence of clouds and moon, time at which the survey was begun, and times at which each leg was begun and finished. The names of the people on the sampling crew are also recorded. 

Analytical Procedures:  

Perpendicular distance data are entered into Program DISTANCE to estimate the total density of rabbits in the study area. Values are computed as numbers of individuals per square kilometer.

Instrumentation: 

2,000,000,000 candlepower Q-Beam spotlights.

Maintenance: 

File created 23 Nov. 1992 - SM

1-30-95: 1-23-95 data entered by Rosemary Vigil.9-11-97: doc file created by Robert R. Parmenter 9-11-97: 4-25-95 through 8-4-97 data entered by Robert R. Parmenter 9-19-97: archived by Gregg MacKeigan as rabbit_survey_92-97.dbf. 10-29-97: data for 10-27-97 entered and checked by Robert R. Parmenter 2-6-00: data for 1998, 1999, and Jan. 2000 entered and checked by Robert R. Parmenter. 12-25-00: data for April, July, and October 2000 entered and checked by Robert R. Parmenter. 2-6-01: data for February 2001 entered and checked by Robert R. Parmenter. 2-5-02: data for April, July and October 2001, and January 2002, entered and checked by Robert R. Parmenter. 6-26-02: data for April, 2002, entered and checked by Robert R. Parmenter. 7-24-02: data for July, 2002, entered and checked by Robert R. Parmenter. 10-25-02: data for October, 2002, entered and checked by Robert R. Parmenter. 12-30-05: data for 2003 and 2004 entered and checked, and final edits to metadata file made by Robert R. Parmenter. doc

Additional information: 

Dates of collection vary in some years, but sampling is generally conducted in January, April, July, and October.

Biannual Grass Demography Study at the Sevilleta National Wildlife Refuge, New Mexico (1989-1993)

Abstract: 

This project was designed to investigate the response of plant growth and reproduction to short- and long-term variation in biotic and abiotic environmental variables. Several perennial taxa, including tree (Juniperus monsperma and Pinus edulis), shrub (Larrea tridentata) and bunch grasses (Oryzopsis hymenoides (now Achnaterum hymenoides) and Sporobolus contractus) species, were monitored at 1-3 sites differing in elevation and topography as well as edaphic variables and annual precipitation. The sites represented optimal or marginal/transitional zones for particular species. Demographic measurements were made biannually, after the 'wet' (fall) and 'dry' (spring) seasons. For tree and shrub species, estimates of growth and reproduction were based on branch demography, with ten branch tips from 10-20 individuals per species per site repeatedly measured from 1989-1993.  For J. monsperma, P. edulis and L. tridentata, vegetative growth (i.e., branch growth) as well as reproduction were monitored. Additional measurements included needle length for P. edulis and leaf production, leaf size and branchlet production for L. tridentata. For grasses, basal diameter, leaf length and reproduction were monitored for 100 individuals per species per site.

This project, SEV027, contains only data on grass demography.  Data on other variables and species is contained in SEV006, SEV024, SEV025, SEV026, and SEV028.

Core Areas: 

Data set ID: 

27

Additional Project roles: 

67
68
69

Keywords: 

Data sources: 

sev027_grassdemography_20130412.txt

Methods: 

Plant Selection - Three plots were established at each grassland site. Plants to be measured were randomly selected from tagged plants in each of the three plots.

Tag Placement - Tags were tied around a part of the grass clump.

Circumference - This is the circumference around a grass clump at 10 cm. above the ground. A tailor's tape was wrapped around the grass clump and pulled tight to bring the grass stems together in a single bunch. Then the circumference measurement was taken.

Leaf Length1 - This is the length of the first leaf on the plant being measured, including the sheath and the blade. The measurement went from the ground to the tip of one of the longest leaves on the individual. In 1993 leaf lengths were measured to the nearest .5 cm.

Leaf Length2 - This measurement is the same as leaf length1, done on a different leaf on the same plant.  In 1993 leaf lengths were measured to the nearest .5 cm.

Inflorescences - This is the number of green or living inflorescences on the plant being measured. If any portion of the inflorescence was green, it was considered alive. This included young stalks that hadn't yet emerged from the sheath.

Maintenance: 

I. Condensed log of activity of plant demography data:
a. Individual documentations iniatiated  1989; Troy Maddux.
b. File (combined documentations) 31 August 1990; Troy Maddux.
c. Abstract (Written by Diane Marshall and Charles Wisdom) put in documentation 31 August 1990; Troy Maddux.
d. Documentation expanded 2 September 1990; Troy Maddux.
e. Concatenation of individual documentations iniatiated September 1990, completed 17 December 1990; Michelle Murillo.
f. File expanded into rdb file 17 December 1990; Michelle Murillo.
g. Rdb file checked, and errors eliminated 18 December 1990; Michelle Murillo.
h. KEYWORDS added 19 December 1990; James Brunt.
i. Random error checking completed 20 December 1990; Michelle Murillo.
j. File complete and archived 21 December 1990; Michelle Murillo & Greg Shore.

Documentation changed to reflect changes in datafile structure; 1 March 91 T. Maddux

II. Detailed log of  alterations/modifications of plant demography data:

This portion of the log contains details of all alterations and modifications applied to this file by Michelle Murillo. The file demography.data was initiated in September 1990 by concatenating individual files into the demography.dat file. A generic header was devised to apply to all individual files. The header reads as such:

date season site species station plant# branch# #1 #2 #3 #4 #5 #6 #7 #8

and the detailed description of the numbers 1-8 are listed in the documentation section of this file. The individual files were then modified to follow this header, which entailed rearranging of columns (generally the season, site, species, station, plant#, and branch#) and the addition of the date column. As the columns numbered 1-8 did not pertain to all individual files, non-applicables (na) were inserted where necessary. Other alterations included:

1. juniper 1989: Sepultura Canyon; addition of na's to presence/absence of male or female cones, depending on sex of tree, i.e. if tree was female then na's were inserted in the male column. Goat Draw; same as Sepultura Canyon.

2. juniper 1990: (Sepultura Canyon site has been discontinued) Goat Draw (season 1); orginal file contained x,y and --'s; which were converted to 0 (absence) and 1 (presence) and appropriate na's were inserted, depending on sex of tree. Goat Draw (season 2); orginal file contained +'s for presence of cones; which were converted to 1 (presence) and appropriate na's were inserted depending on sex of tree.

NOTE: In 1989 width of branch was measured, and in 1990 this measurement was no longer taken. ( The orginal data sheets for 1989-2 are unavailable at the time of archiving, assumption is that this measurement applies to season 2 also ). In 1990 the length of branchlet was measured which was not measured in 1989. (See documentation).

NOTE: In 1989 (both seasons) the variable, number of branchlets, was not included. In 1990 the variable was added, but measurements of this variable was sporadic, occuring only in a few plants.

3. grasses 1989/1990: All sites: addition of na's to branch#.

Error checking was done as follows: Two files, grasses 1990-season 1, and creosote 1990-season 1, had not been entered at the time of concatenation of individual files, and were therefore entered by Michelle Murillo. These two files were errored checked by Michelle Murillo by visual checking of original data sheets with the files on 18 December 1990. On 17 December 1990, the expand program was applied to the demography.dat file and placed into the demography.rdb file. The rdb file was then checked for various errors, and the elimination of these errors were completed on 18 December 1990. On 19-20 December 1990, random error checking was conducted by using 'Tables for Statistical Data-Analysis'. One hundred and fifty entries were checked and approximiately 45 percent of the numbers were from 1989-season 2, and because the data sheets were unavailable, the entries were not error checked. On 23 December 1990, visual checking with the original data sheets was conducted for an overall check.

File initiated June 1991: MLM season 1 entered: MLM season 2 entered: KPM.
Black Butte, season 2 entered and error checked, 7 Jan 1992: MLM.
data entry complete 25 October 1991: KPM; data error checking completed 8 November 1991: KPM.
Documentation updated (New people and times added) on 29 Jan 1992 and inserted into data file by Troy Maddux.

1992 log

Put the 1992 data in the data base on 22 Oct 1992 -Troy Maddux.


THE FOLLOWING IS THE LOG FOR THE SPRING 1992 DEMOGRAPHY DATA
* File initiated by Troy Maddux 24 Aug 1992.
* Goat Draw pied information entered by Michael Bradley and sent to Troy Maddux Wed Aug 19 15:31:03 1992 and these data added to this file by T. Maddux on 15 Oct 1992.
* Black butte data added to this file 15 Oct 1992.
* Many SPCO4 plants in plots 2 and 3 of Five Points had no data for the inflorescence # so this was added (it was 0) on 15 Oct 1992 by Troy Maddux.
* Removed extra '0' from rs spco #531-534 - 16 Oct 1992, T.M.
* Pulled \doc from 1991 demography data to change for 1992 data 16 Oct 1992; T.M.
* Who and When data were collected was added 20 Oct 1992; T.M.

THE FOLLOWING IS THE LOG FOR THE FALL 1992 DEMOGRAPHY DATA
*File initiated 16 Sep 1992 by Tiffany Cotlar
*Data file from Tiffany Cotlar and a data file from Robin Abell combined; also blank lines removed from both files, this was done by Troy Maddux on 20 Oct 1992.
*File initiated 16 Sep 1992 by Robin Abell
*PIED #'s 9,13,23,15,17,36,41,42 by Robin Abell 16 Sep 1992
*JUMO #'s 26,23,24,28,49,5,8,17,13,22,36,41,47,4,15,27,32,46,42 by Robin Abell 16 Sep 1992
*LATR2 #'s (Five Points) 2,3,5,26 by Robin Abell 23 Sep 1992
*SPCO4 #'s (Station B) 61,92,93,94,95,99,101,103,104,105,108,109,109.1,110,110.1,111,112,112.1,122,125,126,127,130,148,149,402 by Robin Abell 23 Sep 1992
*LATR2 #'s (Five Points) 90,92,96 by Robin Abell 24 Sep 1992
*LATR2#'s (Rio Salado) 1,14,17 by Robin Abell 1 Oct 1992
*changed typo: juno to jumo; 20 Oct 1992, T.M.
*added additional field to grass data to make the field # correct 20 Oct 1992, TM.

File submitted for archival 22 OCT 1992 - Troy Maddux

File initiated by Troy Maddux 22 Apr 1993 combining data entered by Ursula Bonhage, Roger Stupf, Christian Heierli, Marilyn Altenbach, and Eric Scherff.
*data entered for:Black Butte Oryzopsis by Roger Stupf and Christian Heierli, on 21 April 1993.
* data entered for: grass plots A,B,C for five Points (4/20/93) by Eric Scherff on 21 April 93.
* data file for: five points Sporobolus data - five points grass plot "c" initiated by M. Altenbach 22 April 93 , fp LATR2 2, 3, & 5
* Data altered to archive format by Troy Maddux - 16 Nov 1993.
* Documentation taken from 91-92 archive data set and modified for this data set. 18 Oct 1993, by Troy Maddux.
* Filled in "Who" and "When" sections from the data sheets - Troy Maddux - 16 Nov 1993.Data entered for Oryzopsis adult measurements--Rio Salado 23 April & 4 May 1993 maps not edited; From escherff Wed May 5 12:27:02 1993.

File initiated by E. Scherff on 3 May 1993

Data for Sporobolus adult measurements at Rio Salado data entered for 23 April & 4 May 1993 maps not edited

File initiated by E. Scherff on 3 May 1993 From escherff Wed May 5 12:17:39 1993

1993 FALL DATA
File for Black Butte orhy data created by Eric Scherff and Cynthia Gregoire on September 21, 1993. Data collected by Marilyn Altenbach and Eric Scherff on September 14, 1993. File for Five Points Sporobolus information created by Cynthia Gregoire & Eric Scherff on 21 September 1993. Data collected by Marilyn Altenbach & Eric Scherff on 14 September 1993 and 15 September 1993. File appended by Eric Scherff and Cynthia Gregoire on 22 September 1993 Changed "nd" representing "no data" to "na" to be consistent with other data bases. - Troy Maddux - 8 Nov 1993.

File for Rio Salado information created by Cynthia Gregoire & Eric Scherff on 24 September 1993 Data collected by Marilyn Altenbach, Eric Scherff and Cynthia Gregoire on 21 September 1993 and 22 September 1993.

Different fall plant data put together into single archive file by Troy Maddux on 8 Nov 1993.

Spring and Fall data put together in Archive File format 17 Nov 1993. by Troy Maddux - also changed nd's and dashes to na's.

9 Dec 1993 - Demography file contained all species - all but the grass information only was taken from this file by Troy Maddux.

14 March 1994. Separated the big demography-89-90 file into four parts; grass, pinyon, creosote, and juniper. Rupal Shah went through and separated the file and edited the documentation.

* Changed >1 to 1 in the data - Troy Maddux 3 Jan 1995.

11/12/98 - Changed species codes to Kartesz. K. Taugher - Changed species codes in metadata to Kartesz. K. Taugher - Added Kartesz code description and reference to metadata. K. Taugher.
- Added final line of "{END OF DATA}" to dataset. K. Taugher
- Added my name and email address under "WHO COLLECTED THE DATA - Kartesz code conversion Data Manager" should any questions arise. K. Taugher
- Realigned columns to right justification. K. Taugher

Additional information: 

1989 and 1990: The data for the first census (May) were collected by Ann Evans (Asst. Professor/UNM), Troy Maddux (Head Plant Tech/LTER), Sam Loftin (Graduate student/UNM), Marikay Ramsey (Head Animal Tech/LTER), Joran Viers (Plant Tech/LTER), Michelle Murillo (Plant Tech/LTER), Jennifer Franklin (Plant Tech/LTER), Amy Shortess (Plant Tech/LTER). The data for the second census (September) were collected by Troy Maddux (Head Plant Tech/LTER), Amy Shortess (Plant Tech/LTER), David Keller (Plant Tech/LTER).

1991: The data for the first census (May) were collected by Roger Mongold (Plant Technician), Brad Swanson (Plant Technician), Joran Viers (Plant Technician), Kathleen McGee (Plant Technician), Sam Loftin (Graduate Student Technician), and Troy Maddux (Head Plant Technician). The data for the second census (May) were collected by JimStanton (Plant Technician), Susan Prichard (Plant Technician), and Troy Maddux (Head Plant Technician).

1992: The data for the first census (Apr-Jun) were collected by Troy Maddux (Head Plant Technician) and the following plant technicians: Marilyn Altenbach, Michael Bradley, Melissa Chavez, Anthony Collier, Julie Knight, Ivan Ortiz, Amanda Persaud, Monica Valdez. The data for the second census (Aug-Oct) were collected by Troy Maddux (Head Plant Technician), Robin Abell (Plant Technician), and Tiffany Cotlar (Plant Technician).1993: SPRING CENSUS - Roger Stupf (Volunteer from Switzerland), Ursula Bonhage(Volunteer from Switzerland), Christian Heierli (Volunteer from Switzerland), Marilyn Altenbach (Field Crew Chief), Eric Scherff (Field Tech), Troy Maddux (Vegetation Studies Program Manager). FALL CENSUS - Cynthia Gregoire (Volunteer from Vermont), Marilyn Altenbach (Field Crew Chief), Eric Scherff (Field Tech). Kartesz code conversion Data Management - Kimberly Taugher (Head Plant Technician, Sevilleta LTER).

1993: SPRING CENSUS - Roger Stupf (Volunteer from Switzerland), Ursula Bonhage (Volunteer from Switzerland), Christian Heierli (Volunteer from Switzerland), Marilyn Altenbach (Field Crew Chief), Eric Scherff (Field Tech), Troy Maddux (Vegetation Studies Program Manager). FALL CENSUS - Cynthia Gregoire (Volunteer from Vermont), Marilyn Altenbach (Field Crew Chief), Eric Scherff (Field Tech).

Biannual Juniper Branch Demography Study at the Sevilleta National Wildlife Refuge, New Mexico (1989-1993)

Abstract: 

This project was designed to investigate the response of plant growth and reproduction to short- and long-term variation in biotic and abiotic environmental variables. Several perennial taxa, including tree (Juniperus monsperma and Pinus edulis), shrub (Larrea tridentata) and bunch grasses (Oryzopsis hymenoides (now Achnaterum hymenoides) and Sporobolus contractus) species, were monitored at 1-3 sites differing in elevation and topography as well as edaphic variables and annual precipitation. The sites represented optimal or marginal/transitional zones for particular species. Demographic measurements were made biannually, after the 'wet' (fall) and 'dry' (spring) seasons. For tree and shrub species, estimates of growth and reproduction were based on branch demography, with ten branch tips from 10-20 individuals per species per site repeatedly measured from 1989-1993.  For J. monsperma, P. edulis and L. tridentata, vegetative growth (i.e., branch growth) as well as reproduction were monitored. Additional measurements included needle length for P. edulis and leaf production, leaf size and branchlet production for L. tridentata. For grasses, basal diameter, leaf length and reproduction were monitored for 100 individuals per species per site.

This project, SEV028, contains only data on juniper branch demography.  Data on other variables and species is contained in SEV006, SEV024, SEV025, SEV026, and SEV027.

Core Areas: 

Data set ID: 

28

Additional Project roles: 

145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164

Keywords: 

Data sources: 

sev028_juniperdemography_02242011

Methods: 

Collection Sites:

1. Goat Draw - This site is located in a small canyon that drains the Los Pinos to the east and is covered by pinyon/juniper woodland with occasional Quercus turbinella, Yucca spp., and Opuntia spp. occurrences. This site contained two study sites, each with 49 labeled trees.

2. Sepultura Canyon - This site is more correctly Sepultura Flats, a gently sloping area just south of the canyon. Trees were marked in two juniper woodland areas: one close to the rim of Sepultura Canyon and another in the hills on the eastern edge of Sepultura Flats. The area between these sites is blue and black grama grassland.

Plant Selection:

Of the 49 numbered trees at each study site, roughly half are on each side (north and south-facing slopes) of the canyon. Half the trees on each side are junipers and half pinons. Ten numbered pinon individuals were randomly selected at each site; five on the north slope and five on the south slope. Random sample numbers were selected to determine which trees were measured.

Branch Selection:

Branches chosen were about 1.5 meters off the ground and numbered 1-10 around the tree to cover all exposures.

Tag Placement:

Tags were placed about six centimeters from the tip of a branch.  Each branch was marked with paint where the tag was attached so the tag could be loose, allowing vascular movement through the branch.

Measurements:

Branch Length - The length of a tagged branch from the tag or paint mark to the tip of the branch.

Branch Width - The widest (right angle to the length) point on a tagged branch.

Female Number - The number of female cones on a branch.

Male - The presence or absence of a male cone. A "1" in the data set indicates the presence of a male cone, whereas a "0" indicates the absence of male cones on the tagged branch.

Maintenance: 

I. Condensed log of activity of plant demography data: a. Individual documentations iniatiated  1989; Troy Maddux. b. File (combined documentations) 31 August 1990; Troy Maddux. c. Abstract (Written by Diane Marshall and Charles Wisdom) put in documentation 31 August 1990; Troy Maddux. d. Documentation expanded 2 September 1990; Troy Maddux. e. Concatenation of individual documentations iniatiated September 1990, completed 17 December 1990; Michelle Murillo. f. File expanded into rdb file 17 December 1990; Michelle Murillo. g. Rdb file checked, and errors eliminated 18 December 1990; Michelle Murillo. h. KEYWORDS added 19 December 1990; James Brunt.i. Random error checking completed 20 December 1990; Michelle Murillo. j. File complete and archived 21 December 1990; Michelle Murillo & Greg Shore.Documentation changed to reflect changes in datafile structure; 1 March 91 T. Maddux II. Detailed log of  alterations/modifications of plant demography data:This portion of the log contains details of all alterations and modifications applied to this file by Michelle Murillo. The file demography.data was initiated in September 1990 by concatenating individual files into the demography.dat file. A generic header was devised to apply to all individual files. The header reads as such:date season site species station plant# branch# #1 #2 #3 #4 #5 #6 #7 #8and the detailed description of the numbers 1-8 are listed in the documentation section of this file. The individual files were then modified to follow this header, which entailed rearranging of columns (generally the season, site, species, station, plant#, and branch#) and the addition of the date column. As the columns numbered 1-8 did not pertain to all individual files, non-applicables (na) were inserted where necessary. Other alterations included:1. juniper 1989: Sepultura Canyon; addition of na's to presence/absence of male or female cones, depending on sex of tree, i.e. if tree was female then na's were inserted in the male column. Goat Draw; same as Sepultura Canyon.2. juniper 1990: (Sepultura Canyon site has been discontinued) Goat Draw (season 1); orginal file contained x,y and --'s; which were converted to 0 (absence) and 1 (presence) and appropriate na's were inserted, depending on sex of tree. Goat Draw (season 2); orginal file contained +'s for presence of cones; which were converted to 1 (presence) and appropriate na's were inserted depending on sex of tree.NOTE: In 1989 width of branch was measured, and in 1990 this measurement was no longer taken. ( The orginal data sheets for 1989-2 are unavailable at the time of archiving, assumption is that this measurement applies to season 2 also ). In 1990 the length of branchlet was measured which was not measured in 1989. (See documentation).NOTE: In 1989 (both seasons) the variable, number of branchlets, was not included. In 1990 the variable was added, but measurements of this variable was sporadic, occuring only in a few plants.3. grasses 1989/1990: All sites: addition of na's to branch#.Error checking was done as follows: Two files, grasses 1990-season 1, and creosote 1990-season 1, had not been entered at the time of concatenation of individual files, and were therefore entered by Michelle Murillo. These two files were errored checked by Michelle Murillo by visual checking of original data sheets with the files on 18 December 1990. On 17 December 1990, the expand program was applied to the demography.dat file and placed into the demography.rdb file. The rdb file was then checked for various errors, and the elimination of these errors were completed on 18 December 1990. On 19-20 December 1990, random error checking was conducted by using 'Tables for Statistical Data-Analysis'. One hundred and fifty entries were checked and approximiately 45 percent of the numbers were from 1989-season 2, and because the data sheets were unavailable, the entries were not error checked. On 23 December 1990, visual checking with the original data sheets was conducted for an overall check.File initiated June 1991: MLM season 1 entered: MLM season 2 entered: KPM.Black Butte, season 2 entered and error checked, 7 Jan 1992: MLM.data entry complete 25 October 1991: KPM; data error checking completed 8 November 1991: KPM.Documentation updated (New people and times added) on 29 Jan 1992 and inserted into data file by Troy Maddux. 1992 log Put the 1992 data in the data base on 22 Oct 1992 -Troy Maddux.THE FOLLOWING IS THE LOG FOR THE SPRING 1992 DEMOGRAPHY DATA* File initiated by Troy Maddux 24 Aug 1992.* Goat Draw pied information entered by Michael Bradley and sent to Troy Maddux Wed Aug 19 15:31:03 1992 and these data added to this file by T. Maddux on 15 Oct 1992.* Black butte data added to this file 15 Oct 1992.* Many SPCO4 plants in plots 2 and 3 of Five Points had no data for the inflorescence # so this was added (it was 0) on 15 Oct 1992 by Troy Maddux.* Removed extra '0' from rs spco #531-534 - 16 Oct 1992, T.M.* Pulled \doc from 1991 demography data to change for 1992 data 16 Oct 1992; T.M.* Who and When data were collected was added 20 Oct 1992; T.M.THE FOLLOWING IS THE LOG FOR THE FALL 1992 DEMOGRAPHY DATA *File initiated 16 Sep 1992 by Tiffany Cotlar*Data file from Tiffany Cotlar and a data file from Robin Abell combined; also blank lines removed from both files, this was done by Troy Maddux on 20 Oct 1992.*File initiated 16 Sep 1992 by Robin Abell*PIED #'s 9,13,23,15,17,36,41,42 by Robin Abell 16 Sep 1992*JUMO #'s 26,23,24,28,49,5,8,17,13,22,36,41,47,4,15,27,32,46,42 by Robin Abell 16 Sep 1992*LATR2 #'s (Five Points) 2,3,5,26 by Robin Abell 23 Sep 1992*SPCO4 #'s (Station B) 61,92,93,94,95,99,101,103,104,105,108,109,109.1,110,110.1,111,112,112.1,122,125,126,127,130,148,149,402 by Robin Abell 23 Sep 1992*LATR2 #'s (Five Points) 90,92,96 by Robin Abell 24 Sep 1992*LATR2#'s (Rio Salado) 1,14,17 by Robin Abell 1 Oct 1992*changed typo: juno to jumo; 20 Oct 1992, T.M.*added additional field to grass data to make the field # correct 20 Oct 1992, TM.File submitted for archival 22 OCT 1992 - Troy MadduxFile initiated by Troy Maddux 22 Apr 1993 combining data entered by Ursula Bonhage, Roger Stupf, Christian Heierli, Marilyn Altenbach, and Eric Scherff.*data entered for:Black Butte Oryzopsis by Roger Stupf and Christian Heierli, on 21 April 1993.* data entered for: grass plots A,B,C for five Points (4/20/93) by Eric Scherff on 21 April 93.* data file for: five points Sporobolus data - five points grass plot "c" initiated by M. Altenbach 22 April 93 , fp LATR2 2, 3, & 5* Data altered to archive format by Troy Maddux - 16 Nov 1993.* Documentation taken from 91-92 archive data set and modified for this data set. 18 Oct 1993, by Troy Maddux.* Filled in "Who" and "When" sections from the data sheets - Troy Maddux - 16 Nov 1993.Data entered for Oryzopsis adult measurements--Rio Salado 23 April & 4 May 1993 maps not edited; From escherff Wed May 5 12:27:02 1993.File initiated by E. Scherff on 3 May 1993Data for Sporobolus adult measurements at Rio Salado data entered for 23 April & 4 May 1993 maps not editedFile initiated by E. Scherff on 3 May 1993 From escherff Wed May 5 12:17:39 19931993 FALL DATA File for Black Butte orhy data created by Eric Scherff and Cynthia Gregoire on September 21, 1993. Data collected by Marilyn Altenbach and Eric Scherff on September 14, 1993. File for Five Points Sporobolus information created by Cynthia Gregoire & Eric Scherff on 21 September 1993. Data collected by Marilyn Altenbach & Eric Scherff on 14 September 1993 and 15 September 1993. File appended by Eric Scherff and Cynthia Gregoire on 22 September 1993 Changed "nd" representing "no data" to "na" to be consistent with other data bases. - Troy Maddux - 8 Nov 1993.File for Rio Salado information created by Cynthia Gregoire & Eric Scherff on 24 September 1993 Data collected by Marilyn Altenbach, Eric Scherff and Cynthia Gregoire on 21 September 1993 and 22 September 1993.Different fall plant data put together into single archive file by Troy Maddux on 8 Nov 1993.Spring and Fall data put together in Archive File format 17 Nov 1993. by Troy Maddux - also changed nd's and dashes to na's. 9 Dec 1993 - Demography file contained all species - all but the grass information only was taken from this file by Troy Maddux.14 March 1994. Separated the big demography-89-90 file into four parts; grass, pinyon, creosote, and juniper. Rupal Shah went through and separated the file and edited the documentation.* Changed >1 to 1 in the data - Troy Maddux 3 Jan 1995.11/12/98 - Changed species codes to Kartesz. K. Taugher - Changed species codes in metadata to Kartesz. K. Taugher - Added Kartesz code description and reference to metadata. K. Taugher.- Added final line of "{END OF DATA}" to dataset. K. Taugher- Added my name and email address under "WHO COLLECTED THE DATA - Kartesz code conversion Data Manager" should any questions arise. K. Taugher- Realigned columns to right justification. K. Taugher

Additional information: 

1989 and 1990: The data for the first census (May) were collected by Ann Evans (Asst. Professor/UNM), Troy Maddux (Head Plant Tech/LTER), Sam Loftin (Graduate student/UNM), Marikay Ramsey (Head Animal Tech/LTER), Joran Viers (Plant Tech/LTER), Michelle Murillo (Plant Tech/LTER), Jennifer Franklin (Plant Tech/LTER), Amy Shortess (Plant Tech/LTER). The data for the second census (September) were collected by Troy Maddux (Head Plant Tech/LTER), Amy Shortess (Plant Tech/LTER), David Keller (Plant Tech/LTER).

1991: The data for the first census (May) were collected by Roger Mongold (Plant Technician), Brad Swanson (Plant Technician), Joran Viers (Plant Technician), Kathleen McGee (Plant Technician), Sam Loftin (Graduate Student Technician), and Troy Maddux (Head Plant Technician). The data for the second census (May) were collected by JimStanton (Plant Technician), Susan Prichard (Plant Technician), and Troy Maddux (Head Plant Technician).

1992: The data for the first census (Apr-Jun) were collected by Troy Maddux (Head Plant Technician) and the following plant technicians: Marilyn Altenbach, Michael Bradley, Melissa Chavez, Anthony Collier, Julie Knight, Ivan Ortiz, Amanda Persaud, Monica Valdez. The data for the second census (Aug-Oct) were collected by Troy Maddux (Head Plant Technician), Robin Abell (Plant Technician), and Tiffany Cotlar (Plant Technician).1993: SPRING CENSUS - Roger Stupf (Volunteer from Switzerland), Ursula Bonhage(Volunteer from Switzerland), Christian Heierli (Volunteer from Switzerland), Marilyn Altenbach (Field Crew Chief), Eric Scherff (Field Tech), Troy Maddux (Vegetation Studies Program Manager). FALL CENSUS - Cynthia Gregoire (Volunteer from Vermont), Marilyn Altenbach (Field Crew Chief), Eric Scherff (Field Tech). Kartesz code conversion Data Management - Kimberly Taugher (Head Plant Technician, Sevilleta LTER).

1993: SPRING CENSUS - Roger Stupf (Volunteer from Switzerland), Ursula Bonhage (Volunteer from Switzerland), Christian Heierli (Volunteer from Switzerland), Marilyn Altenbach (Field Crew Chief), Eric Scherff (Field Tech), Troy Maddux (Vegetation Studies Program Manager). FALL CENSUS - Cynthia Gregoire (Volunteer from Vermont), Marilyn Altenbach (Field Crew Chief), Eric Scherff (Field Tech).

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