Data Package Metadata View Summary

Perennial grass tiller counts in plots with experimentally altered precipitation variability at the Jornada Basin LTER site, 2011-2014

General Information

Data Package:

Local Identifier:

knb-lter-jrn.210328005.1

Title:

Perennial grass tiller counts in plots with experimentally altered precipitation variability at the Jornada Basin LTER site, 2011-2014

Alternate Identifier:

DOI PLACE HOLDER

Abstract:

This dataset contains perennial grass tiller and stolon counts collected starting in 2012 for a long-term precipitation variability manipulation experiment at the Jornada Basin LTER site in southern New Mexico, U.S.A. The study was designed to assess the effect of interannual variability in precipitation on average aboveground net primary productivity (ANPP) in Chihuahuan Desert grasslands. The study began in 2009, has five annual precipitation treatments, and contains 50 plots (10 per treatment). This experiment uses precipitation shelters and irrigation treatments to manipulate water inputs to 2.5 x 2.5 meter plots in a desert grassland. There are high, low, and ambient (control) precipitation variability treatments. Ambient plots receive natural precipitation each year, while variability treatments alternate between 20% and 180% (high variability), or 50% and 150% (low variability) of ambient precipitation each year. Perennial grass tiller and stolon counts were made annually in each plot from 2012-2014. This is an ongoing study and the dataset will be updated as needed.

Short Name:

gc_variability_tillers

Publication Date:

2023-03-09

Language:

English

For more information:
Visit:	https://jrn.lternet.edu
Visit:	DOI PLACE HOLDER

Time Period

Begin:

2012

End:

2014

People and Organizations
Contact:	Information Manager (Jornada Basin LTER) [ email ]
Creator:	Gherardi, Laureano (Arizona State University)
Creator:	Sala, Osvaldo E (Arizona State University)
Associate:	Sutter, Bryce (Arizona State University, field data collection)

Data Entities
Data Table Name:	Tiller and stolon count data
Description:	Plot-level counts of perennial grass tillers and stolons

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210328005/1/60e27364e691287b36275b4fdf84fcc3
Name:	Tiller and stolon count data
Description:	Plot-level counts of perennial grass tillers and stolons
Number of Records:	150
Number of Columns:	7

Table Structure

Object Name:

jrn328005_tillers_and_stolons.csv

Size:

4308 byte

Authentication:

1032183f784590b2cc1a35a07abfb7c5 Calculated By MD5

Text Format:

Number of Header Lines:

Number of Foot Lines:

Record Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

Year

Plot ID

Variability treatment

Odd year ppt treatment

Even year ppt treatment

Tiller count

Stolon count

Column Name:

year

plotid

var_trt

odd_year_ppt

even_year_ppt

tillers

stolons

Definition:

year of observation

Plot ID number

Precipitation variability treatment applied to plot

Fraction of ambient annual precipitation applied to plot in odd years

Fraction of ambient annual precipitation applied to plot in even years

Count of grass tillers

Count of grass stolons

Storage Type:

integer

string

integer

Measurement Type:

dateTime

interval

nominal

interval

Measurement Values Domain:

Format	YYYY
Precision	1

Unit	number
Type	integer

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	0.2/1.8
Definition	20% ambient precipitation in odd years, 180% ambient precipitation in even years (achieved with exclosures or supplemental irrigation)
Source

Code Definition

Code	1.8/0.2
Definition	180% ambient precipitation in odd years, 20% ambient precipitation in even years (achieved with exclosures or supplemental irrigation)
Source

Code Definition

Code	0.5/1.5
Definition	50% ambient precipitation in odd years, 150% ambient precipitation in even years (achieved with exclosures or supplemental irrigation)
Source

Code Definition

Code	1.5/0.5
Definition	150% ambient precipitation in odd years, 50% ambient precipitation in even years (achieved with exclosures or supplemental irrigation)
Source

Code Definition

Code	1/1
Definition	ambient precipitation in odd and even years (control)
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	1.8
Definition	180% ambient precipitation (achieved with supplemental irrigation)
Source

Code Definition

Code	0.2
Definition	20% ambient precipitation (achieved with rainout shelter)
Source

Code Definition

Code	0.5
Definition	50% ambient precipitation (achieved with rainout shelter)
Source

Code Definition

Code	1.5
Definition	150% ambient precipitation (achieved with supplemental irrigation)
Source

Code Definition

Code	1
Definition	ambient precipitation (control)
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	1.8
Definition	180% ambient precipitation (achieved with supplemental irrigation)
Source

Code Definition

Code	0.2
Definition	20% ambient precipitation (achieved with rainout shelter)
Source

Code Definition

Code	0.5
Definition	50% ambient precipitation (achieved with rainout shelter)
Source

Code Definition

Code	1.5
Definition	150% ambient precipitation (achieved with supplemental irrigation)
Source

Code Definition

Code	1
Definition	ambient precipitation (control)
Source

Unit	number
Type	integer

Unit	number
Type	integer

Missing Value Code:

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

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 Areas	disturbance, primary production
LTER Controlled Vocabulary v1	aboveground production, climate, climate change, deserts, grasses, precipitation, rain, rainfall, reproduction, shrubs, vegetation, vegetation dynamics, water
none	climate variability, rainfall manipulation, vegetative growth
Jornada Basin project names	LTREB global change, study 328
Jornada Basin place names	Pasture 13

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:

Experimental design

These data are part of the "Ecosystem responses to changes in inter-annual precipitation variability” study conducted in Exclosure 4 of Pasture 13 on the Jornada Experimental Range (JER) in Dona Ana County, southern New Mexico, USA. The study is designed to assess the effect of interannual variability in precipitation on average aboveground net primary productivity (ANPP) in Chihuahuan Desert grasslands. It began in 2009 and has five treatments: 1) ambient precipitation, 2) alternating +50% and -50% precipitation, 3) alternating -50% and +50% precipitation, 4) alternating + 80% and -80% precipitation, and 5) alternating -80% and +80% precipitation. Ambient precipitation plots serve as controls and have no water manipulation. Rainout shelters are used to exclude 50% and 80% precipitation and an irrigation system is used to add 50% and 80% of natural PPT (Gherardi and Sala 2013). The +50% variability, in even years, receives one half of ambient PPT by installing rainout shelters and, in odd years, receives 150% of ambient PPT via experimental watering. The +80% variability treatment alternates years of +80% with years of -80%. For the alternating treatments, annual changeover takes place during the third week of May. At the end of the study period, each treatment will have received the same relative amount, but one treatment received a natural PPT each year while the other treatments experienced sequences of dry and wet years resulting in different interannual variability. We use ten replicates per treatment for a total of 50 plots.

Tiller and stolon counts

Perennial grass tillers and stolons were counted in fall of 2012-2014.

Related data and publications

For further information and results see:

Gherardi, Laureano A., and Osvaldo E. Sala. "Enhanced precipitation variability decreases grass-and increases shrub-productivity." Proceedings of the National Academy of Sciences 112, no. 41 (2015a): 12735-12740.

Gherardi, Laureano A., and Osvaldo E. Sala. "Enhanced interannual precipitation variability increases plant functional diversity that in turn ameliorates negative impact on productivity." Ecology Letters 18, no. 12 (2015b): 1293-1300.

Gherardi, Laureano A., and Osvaldo E. Sala. "Automated rainfall manipulation system: a reliable and inexpensive tool for ecologists." Ecosphere 4, no. 2 (2013): 1-10.

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:	Laureano Gherardi
Organization:	Arizona State University

Individual:	Osvaldo E Sala
Organization:	Arizona State University
Id:	https://orcid.org/0000-0003-0142-9450

Contacts:

Organization:

Jornada Basin LTER

Position:

Information Manager

Phone:

575-322-2430

Email Address:

jornada.data@nmsu.edu

Web Address:

https://lter.jornada.nmsu.edu/information-management/

Associated Parties:

Individual:	Bryce Sutter
Organization:	Arizona State University
Role:	field data collection

Metadata Providers:

Organization:

Jornada Basin LTER

Position:

Jornada Basin LTER program

Address:

P.O. Box 30003; MSC 3JER New Mexico State University,

Las Cruces, NM 88003-8003 USA

Email Address:

jornada.lter@nmsu.edu

Web Address:

https://lter.jornada.nmsu.edu

Id:

https://ror.org/05976ta47

Temporal, Geographic and Taxonomic Coverage

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

Time Period

Begin:

2012

End:

2014

Geographic Region:

Description:

Basin Floor: Study occurred in the basin floor geomorphic zone in the Jornada Basin. More precise geographic coordinates for this study may be requested from the JRN LTER Data Manager (jornada.data@nmsu.edu).

Bounding Coordinates:

Northern:	32.749487	Southern:	32.473173
Western:	-106.872883	Eastern:	-106.692716

Project

Parent Project Information:

Title:

LTREB Global Change experiments at Jornada Basin LTER

Personnel:

Individual:

Dr. Osvaldo Sala

Address:

School of Life Sciences and School of Sustainability,

Arizona State University,

Tempe, AZ 85287 United States

Phone:

480-965-4120 (voice)

Email Address:

osvaldo.sala@asu.edu

Role:

Principal Investigator (LTREB)

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 (LTER)

Abstract:

The Global Change experiments in the Jornada Basin consist of controlled, long-term experiments designed to uncover what causes changes in grasslands with enough confidence to predict their future as they begin to experience conditions never seen before. The project expands on decade-long field experiments in which rainfall amount and variability were manipulated over multi-year timescales. Results from these experiments will yield new understanding that will provide guidance to managers of drylands in the Southwest United States, and around the world. The project is funded by the US National Science Foundation (NSF) Long Term Research in Environmental Biology, or LTREB, program.

The Global Change experiments occur in coordination with the Jornada Basin Long-Term Ecological Research program (JRN LTER). JRN LTER 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 (Current NSF award: DEB-2025166) 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.

Additional Award Information:

Funder:

National Science Foundation

Funder ID:

https://ror.org/05976ta47

Number:

1754106

Title:

LTREB: Long-term ecosystem responses to directional changes in precipitation amount and variability in an arid grassland

URL:

https://www.nsf.gov/awardsearch/showAward?AWD_ID=1754106

Additional Award Information:

Funder:

National Science Foundation

Funder ID:

https://ror.org/05976ta47

Number:

2025166

Title:

LTER: Long –Term Research at the Jornada Basin (LTER VII)

URL:

https://www.nsf.gov/awardsearch/showAward?AWD_ID=2025166

Additional Award Information:

Funder:	National Science Foundation
Number:	DEB 1832194
Title:	Prior award: LTER: Long - Term Research at the Jornada Basin (LTER VII)

Additional Award Information:

Funder:	National Science Foundation
Number:	DEB 1235828
Title:	Prior award: LTER: Long-Term Research at the Jornada Basin (LTER-VI)

Additional Award Information:

Funder:	National Science Foundation
Number:	DEB 0618210
Title:	Prior award: Jornada Basin LTER V: Landscape Linkages in Arid and Semiarid Ecosystems

Maintenance

Maintenance:

Description:	ongoing
Frequency:	asNeeded

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'number'
        |     |     |     |  \___attribute 'name' = 'number'
        |     |     |     |  \___attribute 'unitType' = 'dimensionless'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'a quantity or amount'
        |     |     |     |___text '\n        '
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        |___text '\n  '

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EDI is a collaboration between the University of New Mexico and the University of Wisconsin – Madison, Center for Limnology:

Data Package Metadata View Summary

Perennial grass tiller counts in plots with experimentally altered precipitation variability at the Jornada Basin LTER site, 2011-2014

Data Entities

Data Table

Data Package Usage Rights

Keywords

Methods and Protocols

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

Experimental design

Tiller and stolon counts

Related data and publications

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Parent Project Information:

Maintenance

Additional Metadata

Recently Added

Recently Updated

Data Package Metadata View Summary

Perennial grass tiller counts in plots with experimentally altered precipitation variability at the Jornada Basin LTER site, 2011-2014

+/- Data Entities

Data Table

+/- Data Package Usage Rights

+/- Keywords

+/- Methods and Protocols

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

Experimental design

Tiller and stolon counts

Related data and publications

+/- People and Organizations

+/- Temporal, Geographic and Taxonomic Coverage

+/- Project

Parent Project Information:

+/- Maintenance

+/- Additional Metadata

Data Entities

Data Package Usage Rights

Keywords

Methods and Protocols

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Maintenance

Additional Metadata