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Pinon-Juniper (Core Site) Quadrat Data for the Net Primary Production Study at the Sevilleta National Wildlife Refuge, New Mexico

General Information
Data Package:
Local Identifier:knb-lter-sev.278.245674
Title:Pinon-Juniper (Core Site) Quadrat Data for the Net Primary Production Study at the Sevilleta National Wildlife Refuge, New Mexico
Alternate Identifier:DOI PLACE HOLDER
Abstract:

This dataset contains pinon-juniper woodland quadrat data and is part of a long-term study at the Sevilleta LTER measuring net primary production (NPP) across four distinct ecosystems: creosote-dominant shrubland (Site C, est. winter 1999), black grama-dominant grassland (Site G, est. winter 1999), blue grama-dominant grassland (Site B, est. winter 2002), and pinon-juniper woodland (Site P, est. winter 2003). Net primary production is a fundamental ecological variable that quantifies rates of carbon consumption and fixation. Estimates of NPP are important in understanding energy flow at a community level as well as spatial and temporal responses to a range of ecological processes. Above-ground net primary production is the change in plant biomass, represented by stems, flowers, fruit and and foliage, over time and incorporates growth as well as loss to death and decomposition. To measure this change the vegetation variables in this dataset, including species composition and the cover and height of individuals, are sampled twice yearly (spring and fall) at permanent 1m x 1m plots within each site. A third sampling at Site C is performed in the winter. The data from these plots is used to build regressions correlating biomass and volume via weights of select harvested species obtained in SEV157, "Net Primary Productivity (NPP) Weight Data." This biomass data is included in SEV182, "Seasonal Biomass and Seasonal and Annual NPP for Core Research Sites."

Publication Date:2024-03-07
For more information:
Visit: DOI PLACE HOLDER

Time Period
Begin:
2003-03-11
End:
2023-10-17

People and Organizations
Contact:Information Manager (University of New Mexico) [  email ]
Creator:Baur, Lauren (University of New Mexico)
Creator:Collins, Scott (University of New Mexico)
Creator:Muldavin, Esteban (University of New Mexico)
Creator:Rudgers, Jennifer A (University of New Mexico)
Creator:Pockman, William T. (University of New Mexico)
Associate:Cafferky, Samantha (University of New Mexico, Data management)
Associate:Cardenas, Pablo (University of New Mexico, Field crew lead)
Associate:McLaughlin, Jade (University of New Mexico, Field crew)
Associate:Johnson, Jessica (University of New Mexico, Field crew)
Associate:Hallmark, Alesia J (University of New Mexico, Graduate student)
Associate:Baker, Stephanie R (University of New Mexico, Former field crew)
Associate:Bacigalupa, Melissa (University of New Mexico, Data Management)

Data Entities
Data Table Name:
sev278_NPP_quad_pinon_juniper_cover_height.csv
Description:
NPP quad core pinon juniper site cover/height data.
Detailed Metadata

Data Entities

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-sev/278/245674/96263b80162e6db8a22c24c4f3074295
Name:sev278_NPP_quad_pinon_juniper_cover_height.csv
Description:NPP quad core pinon juniper site cover/height data.
Number of Records:61375
Number of Columns:15

Table Structure
Object Name:sev278_NPP_quad_pinon_juniper_cover_height.csv
Size:3541582 byte
Authentication:1b957713c9ecd8d5f37f8d1037123286 Calculated By MD5
Text Format:
Number of Header Lines:1
Record Delimiter:\r\n
Orientation:column
Simple Delimited:
Field Delimiter:,
Quote Character:"

Table Column Descriptions
 
Column Name:year  
season  
collection_date  
site  
treatment  
transect  
plot  
quad  
species  
obs  
cover  
height  
count  
field_comments  
qaqc_comments  
Definition:The year in which data was collected.The season in which data was collected.The date data was collected.Site at which data was collected.The treatment applied to a sampled unit.The letter code for the transect for sites that have transect designsThe plot number or letter for sites that have plot designsThe quadrat number which is nested within each site, plot, block, etc. depending on the designThe Kartez code for a plant species as designated by the USDA Plants Database.The sequential number given to a specific vegetative unit within a quadrat.The percent cover of an observation (or vegetative unit) for a given species.Maximum height of plant. For perennial grasses, maximum height for green foliage, for herbs and annuals, maximum height of inflorescence.The number of records within a vegetative unit for a given species.Comment regarding the field observationComment added during QA/QC
Storage Type:date  
string  
date  
string  
string  
string  
string  
string  
string  
string  
float  
float  
float  
string  
string  
Measurement Type:dateTimenominaldateTimenominalnominalnominalnominalnominalnominalnominalratioratiorationominalnominal
Measurement Values Domain:
FormatYYYY
Precision
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
Definitionwinter
Source
Code Definition
Code2
Definitionspring
Source
Code Definition
Code3
Definitionfall
Source
FormatYYYY-MM-DD
Precision
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Codecore_PJ
DefinitionCore pinon juniper site
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
CodeC
Definitioncontrol plot
Source
Definitiontext
Definitiontext
Definitiontext
Definitiontext
Definitiontext
Unitpercent
Typereal
Min0 
Max117 
Unitcentimeter
Typereal
Min0 
Max1300 
Unitnumber
Typewhole
Min0 
Max600 
Definitiontext
Definitiontext
Missing Value Code:
CodeNA
Explmissing
CodeNA
Explmissing
CodeNA
Explmissing
CodeNA
Explmissing
CodeNA
Explmissing
CodeNA
Explmissing
CodeNA
Explmissing
CodeNA
Explmissing
CodeNA
Explmissing
CodeNA
Explmissing
CodeNA
Explmissing
CodeNA
Explmissing
CodeNA
Explmissing
CodeNA
Explmissing
CodeNA
Explmissing
Accuracy Report:                              
Accuracy Assessment:                              
Coverage:                              
Methods:                              

Data Package Usage Rights

This data package is released to the "public domain" under Creative Commons CC0 1.0 "No Rights Reserved" (see: https://creativecommons.org/publicdomain/zero/1.0/). It is considered professional etiquette to provide attribution of the original work if this data package is shared in whole or by individual components. A generic citation is provided for this data package on the website https://portal.edirepository.org (herein "website") in the summary metadata page. Communication (and collaboration) with the creators of this data package is recommended to prevent duplicate research or publication. This data package (and its components) is made available "as is" and with no warranty of accuracy or fitness for use. The creators of this data package and the website shall not be liable for any damages resulting from misinterpretation or misuse of the data package or its components. Periodic updates of this data package may be available from the website. Thank you.

Keywords

By Thesaurus:
(No thesaurus)cover, quadrat
LTER controlled vocabularyannual net primary production, biodiversity, burning, climate, community patterns, community structure, deserts, disturbance, disturbances, droughts, ecology, ecosystem properties, elevation, fertilization, fertilizer, fires, foliage, forbs, grasses, grasslands, herbs, litter, long term, measurements, net primary productivity, nitrogen deposition, nutrients, organisms, permanent plots, plant communities, plant cover, plant ecology, plant growth, plant species composition, plant species, plants, precipitation, primary production, production, productivity, recovery, seasonality, shrubs, simulation, soil moisture, soil warming, species diversity, species richness, stems, succession, successional dynamics, transects, vegetation dynamics, vegetation, wildfires, communities, forests, species
LTER core research areaprimary production

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Methods and protocols used in the collection of this data package
Description:

Locating the Sampling Quadrats: Site P, the pinon-juniper woodland site (Cerro Montosa), is set-up differently than the other core sites. In order to accommodate the different habitat types, groups of transects (i.e., "plots") were set up along north (N) and south (S) facing slopes as well as along vegas (V) and ridges (R). Transects on the first two plots consist of 40 quads each (10 quadrants for each of four habitat types). Plot one is slightly west of plot three and plot two is slightly west of the weather station. Plot three is located on a wide piedmont, which consists of four transects with five quadrats on each. Collecting the Data: Net primary production data is collected twice each year, spring and fall, for all sites. The Five Points Creosote Core Site is also sampled in winter. Spring measurements are taken in April or May when shrubs and spring annuals have reached peak biomass. Fall measurements are taken in either September or October when summer annuals have reached peak biomass but prior to killing frosts. Winter measurements are taken in February before the onset of spring growth.Vegetation data is collected on a palm top computer. A 1-m2 PVC-frame is placed over the fiberglass stakes that mark the diagonal corners of each quadrat. When measuring cover it is important to stay centered over the vegetation in the quadrat to prevent errors caused by angle of view (parallax). Each PVC-frame is divided into 100 squares with nylon string. The dimensions of each square are 10cm x 10cm and represent 1 percent of the total area. The cover (area) and height of each individual live (green) vegetative unit that falls within the one square meter quadrat is measured. A vegetative unit consists of an individual size class (as defined by a unique cover and height) of a particular species within a quadrat. Cover is quantified by counting the number of 10cm x 10cm squares filled by each vegetative unit. Niners and plexidecs are additional tools that help accurately determine the cover a vegetative unit. A niner is a small, hand-held PVC frame that can be used to measure canopies. Like the larger PVC frame it is divided into 10cm x 10cm squares, each square representing 1% of the total cover. However, there are only nine squares within the frame, hence the name “niner.” A plexidec can help determine the cover of vegetative units with covers less than 1%. Plexidecs are clear plastic squares that are held above vegetation. Each plexidec represents a cover of 0.5% and has smaller dimensions etched onto the surface that correspond to 0.01%, 0.05%, 0.1%, and 0.25% cover. It is extremely important that cover and height measurements remain consistent over time to ensure that regressions based on this data remain valid. Field crew members should calibrate with each other to ensure that observer bias does not influence data collection. Cover Measurements: Grasses-To determine the cover of a grass clump, envision a perimeter around the central mass or densest portion of the plant, excluding individual long leaves, wispy ends, or more open upper regions of the plant. Live foliage is frequently mixed with dead foliage in grass clumps and this must be kept in mind during measurement as our goal is to measure only plant biomass for the current season. In general, recently dead foliage is yellow and dead foliage is gray. Within reason, try to include only yellow or green portions of the plant in cover measurement while excluding portions of the plant that are gray. This is particularly important for measurements made in the winter when there is little or no green foliage present. In winter, sometimes measurements will be based mainly on yellow foliage. Stoloniferous stems of grasses that are not rooted should be ignored. If a stem is rooted it should be recorded as a separate observation from the parent plant. Forbs, shrubs and sub-shrubs (non-creosote)-The cover of forbs, shrubs and sub-shrubs is measured as the horizontal area of the plant. If the species is an annual it is acceptable to include the inflorescence in this measurement if it increases cover. If the species is a perennial, do not include the inflorescence as part of the cover measurement. Measure all foliage that was produced during the current season, including any recently dead (yellow) foliage. Avoid measuring gray foliage that died in a previous season. Cacti-For cacti that consist of a series of pads or jointed stems (Opuntia phaecantha, Opuntia imbricata) measure the length and width of each pad to the nearest cm instead of cover and height. Cacti that occur as a dense ball/clump of stems (Opuntia leptocaulis) are measured using the same protocol as shrubs. Pincushion or hedgehog cacti (Escobaria vivipara, Schlerocactus intertextus, Echinocereus fendleri) that occur as single (or clustered) cylindrical stems are measured as a single cover. Yuccas-Make separate observations for the leaves and caudex (thick basal stem). Break the observations into sections of leaves that are approximately the same height and record the cover as the perimeter around this group of leaf blades. The caudex is measured as a single cover. The thick leaves of yuccas make it difficult to make a cover measurement by centering yourself over the caudex of the plant. The cover of the caudex may be estimated by holding a niner next to it or using a tape measure to measure to approximate the area. Height Measurements: Height is recorded as a whole number in centimeters. All heights are vertical heights but they are not necessarily perpendicular to the ground if the ground is sloping. Annual grasses and all forbs-Measure the height from the base of the plant to the top of the inflorescence (if present). Otherwise, measure to the top of the green foliage. Perennial grasses-Measure the height from the base of the plant to the top of the live green foliage. Do not include the inflorescence in the height measurement. The presence of live green foliage may be difficult to see in the winter. Check carefully at the base of the plant for the presence of green foliage. If none is found it may be necessary to pull the leaf sheaths off of several plants outside the quadrat. From this you may be able to make some observations about where green foliage is likely to occur. Perennial shrubs and sub-shrubs (non-creosote)-Measure the height from the base of the green foliage to the top of the green foliage, ignoring all bare stems. Do not measure to the ground unless the foliage reaches the ground. Plants rooted outside but hanging into a quadrat-Do not measure the height from the ground. Measure only the height of the portion of the plant that is within the quadrat. Creosote Measurements: To measure creosote (i.e., Larrea tridenta) break the observations into two categories:1.) Small, individual clusters of foliage on a branch (i.e., branch systems): Measure the horizontal cover of each live (i.e., green) foliage cluster, ignoring small open spaces (keeping in mind the 15% guideline stated above). Then measure the vertical "height" of each cluster from the top of the foliage to a plane created by extending a line horizontally from the bottom of the foliage. Each individual foliage cluster within a bush is considered a separate observation.2.) Stems: Measure the length of each stem from the base to the beginning of live (i.e., green) foliage. Calculate the cumulative total of all stem measurements. This value is entered under "height" with the species as "stem" for each quadrat containing creosote. All other variable receive a default entry of "1" for creosote stem measurements. Do not measure dead stems or areas of dead foliage. If in doubt about whether a stem is alive, scrape the stem with your fingernail and check for the presence of green cambium. Recording the Data: Excel spreadsheets are used for data entry and file names should begin with the overall study (npp), followed by the date (mm.dd.yy) and the initials of the recorder (.abc). Finally, the site abbreviation should be added (i.e., c, g, b, p). The final format for sites B, G, and C should be as follows: npp_core.mm.dd.yy.abc.xls. For site P, the file format should be npp_pinj.mm.dd.yy.abc.xls. File names should be in lowercase.

People and Organizations

Publishers:
Organization:Environmental Data Initiative
Email Address:
info@edirepository.org
Web Address:
https://edirepository.org
Id:https://ror.org/0330j0z60
Creators:
Individual: Lauren Baur
Organization:University of New Mexico
Email Address:
lbaur@unm.edu
Individual: Scott Collins
Organization:University of New Mexico
Email Address:
scollins@unm.edu
Id:https://orcid.org/0000-0002-0193-2892
Individual: Esteban Muldavin
Organization:University of New Mexico
Email Address:
muldavin@unm.edu
Individual: Jennifer A Rudgers
Organization:University of New Mexico
Email Address:
jrudgers@unm.edu
Id:https://orcid.org/0000-0001-7094-4857
Individual: William T. Pockman
Organization:University of New Mexico
Email Address:
pockman@unm.edu
Id:https://orcid.org/0000-0002-3286-0457
Contacts:
Organization:University of New Mexico
Position:Information Manager
Email Address:
sevim@unm.edu
Associated Parties:
Individual: Samantha Cafferky
Organization:University of New Mexico
Email Address:
slc14@unm.edu
Role:Data management
Individual: Pablo Cardenas
Organization:University of New Mexico
Email Address:
pancar81@unm.edu
Role:Field crew lead
Individual: Jade McLaughlin
Organization:University of New Mexico
Email Address:
jmclaugh@unm.edu
Role:Field crew
Individual: Jessica Johnson
Organization:University of New Mexico
Email Address:
jjohnson6@unm.edu
Role:Field crew
Individual: Alesia J Hallmark
Organization:University of New Mexico
Email Address:
alesiahallmark@unm.edu
Id:https://orcid.org/0000-0002-1024-5779
Role:Graduate student
Individual: Stephanie R Baker
Organization:University of New Mexico
Email Address:
srbaker@unm.edu
Role:Former field crew
Individual: Melissa Bacigalupa
Organization:University of New Mexico
Id:https://orcid.org/0009-0005-9596-3778
Role:Data Management

Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to all data in this dataset:

Time Period
Begin:
2003-03-11
End:
2023-10-17
Sampling Site: 
Description:core_pj - The Cerro Montosa pinon-juniper site has been the location of major Sevilleta LTER research since 1989. Meteorological trends, net primary productivity, rodent and ground-dwelling arthropod populations, mycorrhizal responses to fertilizer, pinon-juniper fruit and nut production, and pinon mortality are all being investigated at this site. Previous studies have included analyses of pinon tree rings for regional climate reconstruction. The vegetation is New Mexico pinon-juniper Woodland, dominated by Colorado pinon (Pinus edulis) and one-seed juniper (Juniperus monosperma), and accompanied by gray oak (Quercus grisea). There is a diverse shrub component, including scrub live oak (Q. turbinella), mountain mahogany (Cercocarpus montanus), broom snakeweed (Gutierrezia sarothrae), sacahuista (Nolina microcarpa), red barberry (Mahonia haematocarpa), Apache plume (Fallugia paradoxa), tree cholla (Opuntia imbricata), skunkbush (Rhus trilobata), and banana yucca (Yucca baccata). Grass diversity is also high, and open spaces between trees are dominated by blue grama (Bouteloua gracilis), with hairy and sideoats grama (B. hirsuta and B. curtipendula) and black grama (B. eriopoda) also abundant. Other common grasses include purple threeawn (Aristida purpurea), wolftail (Lycurus phleoides), mountain and ring muhly (Muhlenbergia montanus and M. torreyi), and New Mexican porcupinegrass (Heterostipa neomexicana). Common forbs include small-flowered milkvetch (Astragalus nuttallianus), white sagebrush (Artemesia ludoviciana), Fendler's arabis (Arabis fendleri), Fendler's sandmat (Chamaesyce fendleri), New Mexico thistle (Cirsium neomexicanum), false pennyroyal (Hedeoma oblongifolia), bastard sage (Eriogonum wrightii), pingue rubberweed (Hymenoxys richardsonii), large four o'clock (Mirabilis multiflora), Fendler's penstemon (Penstemon fendleri), and globemallows (Sphaeralcea spp.).
Site Coordinates:
Longitude (degree): -106.535Latitude (degree): 34.368

Project

Parent Project Information:

Title:LTER: Sevilleta (SEV) Site: Climate Variability at Dryland Ecotones
Personnel:
Individual: Jennifer A Rudgers
Organization:University of New Mexico
Email Address:
jrudgers@unm.edu
Id:https://orcid.org/0000-0001-7094-4857
Role:Principal Investigator
Individual: Seth Newsome
Organization:University of New Mexico
Email Address:
newsome@unm.edu
Id:https://orcid.org/0000-0002-4534-1242
Role:Principal Investigator
Additional Award Information:
Funder:U.S. National Science Foundation
Title:1655499
Related Project:
Title:No project title to report
Personnel:
Individual: Marcy E Litvak
Organization:University of New Mexico
Email Address:
mlitvak@unm.edu
Id:https://orcid.org/0000-0002-4255-2263
Role:Principal Investigator
Funding: No funding to report
Related Project:
Title:No project title to report
Personnel:
Individual: Esteban H Muldavin
Organization:University of New Mexico
Email Address:
muldavin@unm.edu
Role:Principal Investigator
Funding: No funding to report
Related Project:
Title:Sevilleta LTER IV: Abiotic Pulses and Constraints: Effects on Dynamics and Stability in an Aridland Ecosystem
Personnel:
Individual: Scott Collins
Organization:University of New Mexico
Email Address:
scollins@unm.edu
Id:https://orcid.org/0000-0002-0193-2892
Role:Principal Investigator
Funding: NSF 0217774
Related Project:
Title:LTERV: Pulse dynamics in an aridland ecosystem
Personnel:
Individual: Scott Collins
Organization:University of New Mexico
Email Address:
scollins@unm.edu
Id:https://orcid.org/0000-0002-0193-2892
Role:Principal Investigator
Funding: NSF 1232294
Related Project:
Title:LTER V: Long Term Pulse Dynamics in an Aridland Ecosystem
Personnel:
Individual: William Pockman
Organization:University of New Mexico
Email Address:
pockman@unm.edu
Id:https://orcid.org/0000-0002-3286-0457
Role:Principal Investigator
Funding: NSF 1440478
Related Project:
Title:LTER: Sevilleta (SEV) Site: Climate Variability at Dryland Ecotones
Personnel:
Individual: Jennifer A Rudgers
Organization:University of New Mexico
Email Address:
jrudgers@unm.edu
Id:https://orcid.org/0000-0001-7094-4857
Role:Principal Investigator
Funding: NSF 1655499
Related Project:
Title:EAGER: Collaborative Research: Sevilleta LTER Environmental Variability at Dryland Ecotones
Personnel:
Individual: Jennifer A Rudgers
Organization:University of New Mexico
Email Address:
jrudgers@unm.edu
Id:https://orcid.org/0000-0001-7094-4857
Role:Principal Investigator
Funding: NSF 1748133

Maintenance

Maintenance:
Description:ongoing
Frequency:

Additional Info

Additional Information:
 

Personnel:

Joshua Cortez April 2021-present, Alfredo Garcia April 2021-present, Saul Kelly Roman September 2020-present, Timothy Ohlert September 2018-present, Melanie Kazenel September 2018-present, Lauren Baur July 2017-present, Cassandra Miller May 2021, Alesia Hallmark August 2020-September 2020, Melissa Bacigalupa May 2018-September 2020, Ayhan Yener September 2020, Jessica Johnson January 2019-September 2020, Samantha Cafferky April 2019-April 2020, Kelly Lizewski September 2019-April 2020, Nicholas Smith May 2019-October 2019, Nick Dolhyj July 2018-March 2019, Jade McLaughlin July 2018-present, Pablo Cardenas May 2017-April 2021, , Emily McCall July 2017-May 2018, Tracy Ridlinghafer July-2017-July 2018, Nathan Gehres 2014-2017, Chandra Tucker April 2014-2017, Megan McClung April 2013-July 2017, Stephanie Baker October 2010-2016, 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.

Other Metadata

Additional Metadata

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        |     |___text '\n      '
        |___text '\n   '

Additional Metadata

additionalMetadata
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        |___element 'metadata'
        |     |___text '\n         '
        |     |___element 'importedFromXML'
        |     |        \___attribute 'dateImported' = '2024-03-04'
        |     |        \___attribute 'filename' = 'knb-lter-sev.278.245673.xml'
        |     |        \___attribute 'taxonomicCoverageExempt' = 'True'
        |     |___text '\n      '
        |___text '\n   '

Additional Metadata

additionalMetadata
        |___text '\n      '
        |___element 'metadata'
        |     |___text '\n         '
        |     |___element 'emlEditor'
        |     |        \___attribute 'app' = 'ezEML'
        |     |        \___attribute 'release' = '2024.02.21'
        |     |___text '\n      '
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