Data Package Metadata View Summary

Pre-dawn water potential of leaves from reduced and enhanced precipitation treatments at the Jornada Basin LTER site, 2007-2008

General Information

Data Package:
Local Identifier:	knb-lter-jrn.210409002.76
Title:	Pre-dawn water potential of leaves from reduced and enhanced precipitation treatments at the Jornada Basin LTER site, 2007-2008
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	This data package contains pre-dawn water potential data for leaves collected from mesquite shrubs and black grama grasses at the Jornada Basin LTER site in 2007-2008. The purpose of this study was to quantify ecophysiological performance of shrubs and grasses in the context of precipitation manipulations. One mesquite and one black grama leaf from each plot (n = 20 plots; 5 PPT treatments X 4 replicate plots/treatment) were measured 5 times beginning July 2007 and ending in August 2008. The precipitation treatments consisted of +/-80%, +/-50%, and ambient/control. Leaves were excised from plants and immediately measured for water potential (MPa) with a pressure chamber at least 0.5 h before dawn. The data set is complete.
Publication Date:	2020-09-28

Time Period

Begin:

2007-07-25

End:

2008-09-20

People and Organizations
Contact:	Anderson, John (New Mexico State University)
Contact:	Data Manager(Jornada Basin LTER) [ email ]
Creator:	Sala, Osvaldo (Arizona State University)
Creator:	Throop, Heather (Arizaona State University)
Creator:	Archer, Steve (The University of Arizona)
Creator:	Reichmann, Lara (Univeristy of Texas Austin)

Data Entities
Data Table Name:	Water potential data, 2007-2008
Description:	Pre-dawn water potential of shrub and grass leaves on the Jornada Basin, 2007-2008

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210409002/76/0b48c8e2a4682cf04913df2f46cee4e2
Name:	Water potential data, 2007-2008
Description:	Pre-dawn water potential of shrub and grass leaves on the Jornada Basin, 2007-2008
Number of Records:	240
Number of Columns:	5

Table Structure

Object Name:

JRN_409002_predawn_water_potential.csv

Size:

7033 bytes

Authentication:

fc5114102a09e91de800d3a7d35b5388 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:

Table Column Descriptions

Column Name:

date

plot

spp

ppttrt

waterpot

Definition:

Measurement date

Plot number (established by Sala)

plant species measured (4-letter plant species code)

Precipitation treatment of the plot

Predawn xylem water potential

Storage Type:

date

float

string

float

Measurement Type:

dateTime

ratio

nominal

ratio

Measurement Values Domain:

Format	YYYY-MM-DD
Precision

Unit	dimensionless
Type	natural
Min	201
Max	244

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	PRGL
Definition	Prosopis glandulosa
Source

Code Definition

Code	BOER
Definition	Bouteloua eriopoda
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	-80%
Definition	80% reduced precipitation
Source

Code Definition

Code	-50%
Definition	50% reduced precipitation
Source

Code Definition

Code	0%
Definition	control
Source

Code Definition

Code	50%
Definition	50% increase precipitation
Source

Code Definition

Code	80%
Definition	80% increase precipitation
Source

Unit	megapascal
Type	real
Min	-7.5
Max	-0.1

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) has an ethical obligation 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 Controlled Vocabulary	deserts, grasslands, shrubs, plant physiology, plant species, pressure, plant ecology, plant properties, water balance, transpiration, drought
Jornada Project Names	study 409
JRN Dataset Keywords	Vegetation Dynamics, Land-Atmosphere Interactions
Jornada Place Names	JER
LTER Core Area	Populations
(No thesaurus)	xylem, water potential, predawn

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:

To investigate the plant physiological responses to drought and enhanced precipitation, 20 plots (each 2.5m x 2.5m) were established on the Jornada Basin LTER. Five precipitation treatments (+/-80%, +/-50%, and control/ambient PPT) and 4 replicates plots per treatment were measured to compare differences in pre-dawn water potential of leaves collected from mesquite (Prosopis glandulosa) and black grama (Bouteloua eriopoda). Each plot was centered around a mature mesquite shrub with a mean height of 0.5m, and mean canopy diameter of 1.1 m. Precipitation manipulations used a combination of rain-out shelters and irrigation systems.

One mesquite and one black grama leaf from each plot were measured on 7/25/07, 8/18/07, 7/21/08, 7/25/08, and 8/13/08. Leaves were excised from plants and immediately measured and were completed at least 0.5 h before dawn. Predawn leaf water potential was quantified with pressure chambers (black grama: model 1000, with 100 bar capacity; PMS Instrument Co, Corvallis, OR; mesquite: model 2005, Soil Moisture Equipment Corp, Santa Barbara, CA).

The data set includes the date of collection, plot, plant species, ppt treatment, and leaf water potential (MPa). This study was completed on August 13, 2008.

For more details, see Throop, H.L., Reichmann, L.G., Sala, O.E. and Archer, S.R., 2012. Response of dominant grass and shrub species to water manipulation: an ecophysiological basis for shrub invasion in a Chihuahuan Desert grassland. Oecologia, 169(2), DOI 10.1007/s00442-011-2217-4.

People and Organizations

Publishers:

Organization:

Environmental Data Initiative

Email Address:

info@environmentaldatainitiative.org

Web Address:

https://environmentaldatainitiative.org

Creators:

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

Individual:	Heather Throop
Organization:	Arizaona State University
Id:	https://orcid.org/0000-0002-7963-4342

Individual:	Steve Archer
Organization:	The University of Arizona
Id:	https://orcid.org/0000-0002-5539-4129

Individual:	Lara Reichmann
Organization:	Univeristy of Texas Austin
Id:	https://orcid.org/0000-0002-9737-7300

Contacts:

Individual:	John Anderson
Organization:	New Mexico State University

Individual:

Data Manager

Organization:

Jornada Basin LTER

Email Address:

datamanager.jrn.lter@gmail.com

Temporal, Geographic and Taxonomic Coverage

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

Time Period

Begin:

2007-07-25

End:

2008-09-20

Geographic Region:

Description:

Basin_Floor geomorphic unit. Contact the data manager for more precise coordinates.

Bounding Coordinates:

Northern:	32.7494871	Southern:	32.47317259
Western:	-106.8728831	Eastern:	-106.6927163

Project

Parent Project Information:

Title:

Jornada Basin LTER

Personnel:

Individual:	Debra Peters
Organization:	USDA-ARS Jornada Experimental Range
Role:	Principal Investigator

Funding:

NSF DEB 8612106

Related Project:

Title:

Jornada Basin LTER

Personnel:

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

Funding:

NSF DEB 8612106

Maintenance

Maintenance:

Description:	complete
Frequency:

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'megapascal'
        |     |     |     |  \___attribute 'multiplierToSI' = '1000000'
        |     |     |     |  \___attribute 'name' = 'megapascal'
        |     |     |     |  \___attribute 'parentSI' = 'pascal'
        |     |     |     |  \___attribute 'unitType' = 'pressure'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'megapascal'
        |     |     |     |___text '\n        '
        |     |     |___text '\n      '
        |     |___text '\n    '
        |___text '\n  '

Copyright 2024 Environmental Data Initiative. This material is based upon work supported by the National Science Foundation under grants #2223103 and #2223104. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. Please contact us with questions, comments, or for technical assistance regarding this web site or the Environmental Data Initiative. Please read our privacy policy to know what information we collect about you and to understand your privacy rights.

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Data Package Metadata View Summary

Pre-dawn water potential of leaves from reduced and enhanced precipitation treatments at the Jornada Basin LTER site, 2007-2008

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:

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Parent Project Information:

Maintenance

Additional Metadata

Recently Added

Recently Updated

Data Package Metadata View Summary

Pre-dawn water potential of leaves from reduced and enhanced precipitation treatments at the Jornada Basin LTER site, 2007-2008

+/- 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:

+/- 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