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Total Annual Aboveground Net Primary Productivity across grassland-shrubland ecotones at 3 sites in the Jornada Basin, 2006-ongoing

General Information
Data Package:
Local Identifier:knb-lter-jrn.210262005.2
Title:Total Annual Aboveground Net Primary Productivity across grassland-shrubland ecotones at 3 sites in the Jornada Basin, 2006-ongoing
Alternate Identifier:DOI PLACE HOLDER
Abstract:

The objective of this ongoing study is to investigate how pulses of precipitation translate into pulses of plant aboveground net primary productivity (NPP) across grassland to shrubland ecotones in the northern Chihuahuan Desert. This dataset consists of annual aboveground net primary productivity estimates in three habitat vegetation zones (grassland, ecotone, and shrubland) at three grassland-to-shrubland ecotone sites in the Jornada Basin, Dona Ana County, New Mexico, USA. The annual ANPP estimates are derived from plant cover measurements (see methods). Due to its growth form, Yucca elata (YUEL) has been found to produce large errors in interyear biomass estimates. This data package contains annual ANPP estimates both with and without YUEL, but the authors strongly recommend using the non-YUEL estimates for most purposes. Data collection is ongoing with new observations in spring and fall of each year; data from both annual sampling times are required to estimate annual ANPP.

Publication Date:2022-04-05
Language:English
For more information:
Visit: https://jrn.lternet.edu
Visit: DOI PLACE HOLDER

Time Period
Begin:
2006-05-19
End:
2021-10-29

People and Organizations
Contact:Jornada Basin LTER Information Manager (Jornada Basin LTER) [  email ]
Creator:Bestelmeyer, Brandon T (USDA-ARS Jornada Experimental Range)
Creator:Schooley, Robert (University of Illinois)

Data Entities
Data Table Name:
Total Annual Aboveground Net Primary Productivity by site from Ecotone study
Description:
Add description
Other Name:
A figure of annual ANPP estimates contained in this data set
Description:
Add description
Detailed Metadata

Data Entities

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210262005/2/268d4ff7a51ffe5b9a94f325f6566c2b
Name:Total Annual Aboveground Net Primary Productivity by site from Ecotone study
Description:Add description
Number of Records:144
Number of Columns:5

Table Structure
Object Name:Ecotone_ANPP_by_Site.csv
Size:8237 byte
Authentication:40142edaf3648e047e9e13e2b87bf301 Calculated By MD5
Text Format:
Number of Header Lines:1
Number of Foot Lines:0
Record Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,
Quote Character:"

Table Column Descriptions
 sitezoneyearANPP from all speciesANPP excluding YUEL
Column Name:site  
zone  
year  
ANPP_all_spp  
ANPP_noYUEL  
Definition:site namevegetation zoneyear of measurementmean annual net primary production usual all species observedmean annual net primary production usual all species except YUEL
Storage Type:string  
string  
date  
float  
float  
Measurement Type:nominalnominaldateTimeratioratio
Measurement Values Domain:
Allowed Values and Definitions
Enumerated Domain 
Code Definition
CodeJER Pasture 12A
DefinitionPasture 12 A on the JER
Source
Code Definition
CodeJER Pasture 9
DefinitionPasture 9 on the JER
Source
Code Definition
CodeCDRRC Pasture 3
DefinitionPasture 3 on the CDRRC
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
CodeS
DefinitionShrubland habitat portion of site
Source
Code Definition
CodeG
DefinitionGrassland habitat portion of site
Source
Code Definition
CodeE
DefinitionEcotone habitat portion of site
Source
FormatYYYY
Precision1
UnitgramsPerSquareMeter
Typereal
UnitgramsPerSquareMeter
Typereal
Missing Value Code:      
Code.
ExplMissing value - data not collected or otherwise unavailable
Code.
ExplMissing value - data not collected or otherwise unavailable
Accuracy Report:          
Accuracy Assessment:          
Coverage:          
Methods:          

Non-Categorized Data Resource

Name:A figure of annual ANPP estimates contained in this data set
Entity Type:otherEntity
Description:Add description
Physical Structure Description:
Object Name:Total_ANPP_by_Site.jpg
Size:421209 byte
Authentication:345b6440d7c83da98a63731e369d5f87 Calculated By MD5
Externally Defined Format:
Format Name:JPG
Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210262005/2/6cc5574db7102253c48ea580a2fc654e

Data Package Usage Rights

This information is released under the Creative Commons license - Attribution - CC BY (https://creativecommons.org/licenses/by/4.0/). The consumer of these data ("Data User" herein) is required to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. Thank you.

Keywords

By Thesaurus:
LTER Core Research AreasPopulations, Primary Production
LTER Controlled Vocabulary v1aboveground production, deserts, grasses, net primary production, plant, shrubs, vascular plants, vegetation
noneJornada Basin LTER, core, ecotone, long-term experiment, plant, shrub encroachment, shrub invasion
Jornada Basin LTER dataset keywordsVegetation Dynamics, core
Jornada Basin project namesEcotone, study 262
Jornada Basin place namesCDRRC Pasture 3, Pasture 12A, Pasture 9

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:

General study design

This experiment was conducted at three sites, each with a grassland-to-shrubland ecotone. Two of the sites, JER Pasture 9 and JER Pasture 12A, occur on the USDA Agricultural Research Service Jornada Experimental Range. One site, CDRRC Pasture 3, is located on New Mexico State University's Chihuahuan Desert Rangeland Research Center. Climate is arid to semi-arid, with long-term (90-year) mean annual temperature of 15C and mean annual precipitation of 250 mm, over half of which occurs in summer (July through September).

Sites were chosen to contain 3 distinct habitat types (ecotone positions): grassland, ecotone, and shrubland. Within each habitat type of each site, 32 1 square meter quadrats were established in 2005, yielding 96 quadrats per site and 288 quadrats for the entire study. Within each habitat type the 32 quadrats are arranged in two parallel rows of 16 quadrats each, running perpendicular to the grassland-to-shrubland gradient. Within a row, each quadrat is approximately 20 meters apart. Distance between the two parallel rows is about 55 meters. The rows are parallel to and between rodent trapping lines in data package knb-lter-jrn.210262008.

Quadrats are sampled nondestructively for ocular live cover and height of each species twice per year: once in the spring and once in the fall after the growing season. Two permanent plastic stakes mark the diagonal corners of each quadrat. Measurements are taken within portable square frames placed on the part corners, with an internal area of 1 square meter. The interior of the frame is gridded with twine into one hundred 10 cm x 10 cm sections (each 1% of the quadrat's area) to facilitate plant cover estimates. Plant cover is measured for each species at a minimum of 0.1% and the height to the nearest centimeter.

Annual Aboveground NPP estimation methods

Cover and height are used to estimate the volume of each plant. Plant biomass is then estimated non-destructively using the regressions of plant dimensions (i.e., plant volume) vs. live biomass derived from harvest data previously gathered (Huenneke et al., 2001). For perennial shrubs, sub-shrubs, and the perennial grasses Bouteloua eriopoda, Muhlenbergia porteri, and Pleauraphis mutica, the live spring (pre-growth) biomass is treated as the baseline for that year; thus annual aboveground NPP is estimated as the difference between the fall and the spring standing biomass. Any negative differences are taken as zero. For all other species, the maximum of spring or fall live biomass is taken to be the annual ANPP. Annual ANPP is first assessed by species within each quadrat, then summed over all species to calculate total ANPP for each quadrat, then averaged over the 32 quadrats to produce estimates for each habitat zone within each site. The plant cover and height data used to generate these annual ANPP estimates are available in data package knb-lter-jrn.210262001. Also available are annual ANPP estimates by functional group in data package knb-lter-jrn.210262004.

Due to its growth form, Yucca elata (YUEL) has been found to produce large errors in interyear biomass estimates. This data package contains annual ANPP estimates both with and without YUEL, but the authors strongly recommend using the non-YUEL estimates for most purposes.

References

Huenneke, Laura F., Dennis Clason, and Esteban Muldavin. Spatial heterogeneity in Chihuahuan Desert vegetation: implications for sampling methods in semi-arid ecosystems. Journal of Arid Environments 47, no. 3 (2001): 257-270.

Huenneke, Laura F., John P. Anderson, Marta Remmenga, and William H. Schlesinger. Desertification alters patterns of aboveground net primary production in Chihuahuan ecosystems. Global Change Biology 8, no. 3 (2002): 247-264.

Muldavin, Esteban H., Douglas I. Moore, Scott L. Collins, Karen R. Wetherill, and David C. Lightfoot. Aboveground net primary production dynamics in a northern Chihuahuan Desert ecosystem. Oecologia 155, no. 1 (2008): 123-132.

Peters, Debra PC, Jin Yao, Osvaldo E. Sala, and John P. Anderson. Directional climate change and potential reversal of desertification in arid and semiarid ecosystems. Global Change Biology 18, no. 1 (2012): 151-163.

People and Organizations

Publishers:
Organization:Environmental Data Initiative
Email Address:
info@environmentaldatainitiative.org
Web Address:
https://environmentaldatainitiative.org
Id:https://ror.org/0330j0z60
Creators:
Individual: Brandon T Bestelmeyer
Organization:USDA-ARS Jornada Experimental Range
Address:
P.O. Box 30003; MSC 3JER New Mexico State University,
Las Cruces, NM 88003-8003 U.S.A.
Id:https://orcid.org/0000-0001-5060-9955
Individual: Robert Schooley
Organization:University of Illinois
Email Address:
schooley@illinois.edu
Id:https://orcid.org/0000-0001-5951-2340
Contacts:
Organization:Jornada Basin LTER
Position:Jornada Basin LTER Information Manager
Address:
P.O. Box 30003, MSC 3JER New Mexico State University,
Las Cruces, NM 88003-8003 USA
Phone:
575-646-1739
Email Address:
jornada.data@nmsu.edu
Web Address:
https://lter.jornada.nmsu.edu/information-management/
Metadata Providers:
Organization:Jornada Basin LTER
Address:
P.O. Box 30003; MSC 3JER New Mexico State University,
Las Cruces, NM 88003-8003 USA
Web Address:
https://lter.jornada.nmsu.edu

Temporal, Geographic and Taxonomic Coverage

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

Time Period
Begin:
2006-05-19
End:
2021-10-29
Geographic Region:
Description:Ecotone sites (3): Pastures 9 and 12A of the Jornada Experimental Range and Pasture 3 of the Chihuhuan Desert Rangeland Research Center, Jornada Basin, Dona Ana County, New Mexico, USA. For more detailed geographic locations of the plots please contact the Data Manager.
Bounding Coordinates:
Northern:  32.655760Southern:  32.592700
Western:  -106.889900Eastern:  -106.759500

Project

Parent Project Information:

Title:Jornada Basin LTER
Personnel:
Individual:Dr. Niall Hanan
Address:
P.O. Box 30003, MSC 3JER,
New Mexico State University,
Las Cruces, NM 88003-8003 United States
Phone:
575-646-3335 (voice)
Email Address:
nhanan@nmsu.edu
Role:Principal Investigator
Abstract:

The Jornada Basin Long-Term Ecological Research (LTER) program is part of a national network of long-term ecological research sites funded by the US National Science Foundation (NSF). The Jornada LTER program has been continuously funded since 1982 to develop general principles governing changes between grassland and shrubland ecosystems based on long-term data collected in the Chihuahuan Desert. We translate our findings to dryland ecosystems around the world, and forecast the dynamics of future ecosystem states in response to changing climate and land use.

Funding:

JRN LTER is funded by the National Science Foundation under award DEB 2025166.

Maintenance

Maintenance:
Description:ongoing
Frequency:annually
Other Metadata

Additional Metadata

additionalMetadata
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        |     |___element 'unitList'
        |     |     |___text '\n        '
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        |     |     |     |  \___attribute 'abbreviation' = 'g/m²'
        |     |     |     |  \___attribute 'id' = 'gramsPerSquareMeter'
        |     |     |     |  \___attribute 'multiplierToSI' = '0.001'
        |     |     |     |  \___attribute 'name' = 'gramsPerSquareMeter'
        |     |     |     |  \___attribute 'parentSI' = 'kilogramPerMeterSquared'
        |     |     |     |  \___attribute 'unitType' = 'arealMassDensity'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'grams per square meter'
        |     |     |     |___text '\n        '
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