Data Package Metadata View Summary

Pre-dawn Water Potential for leaves from Reduced and Enhanced Precipitation Treatments on the Jornada Basin, 2007-2008

General Information

Data Package:
Local Identifier:	knb-lter-jrn.210409009.74
Title:	Pre-dawn Water Potential for leaves from Reduced and Enhanced Precipitation Treatments on the Jornada Basin, 2007-2008
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	This data package contains soil nitrogen data for soils collected under, or near, mesquite at the Jornada Basin LTER site (LTER-I and II) in 1986. The purpose of this study was to analyze nitrogen concentration in soils associated with mesquite (Prosopis glandulosa). The mesquite soils were sampled at 4 habitats - playa, coppice dune, arroyo, and grassland. An ecosystem dominated by the non-legume, Larrea tridentata, and lacking mesquite was included as a reference. Samples were taken from two depths (0-15cm, 15-30cm) for three beneath canopy positions (stem base, mid-canopy, and edge of canopy) and one non-vegetated interzone position for each shrub. Four shrubs were sampled at each site. The soils were analyzed for Total Kjeldahl Nitrogen (TKN), N03 nitrate, NH4 ammonium. The data set was collected on October 1, 1986 and this study is now complete.
Publication Date:	2020-09-11

Time Period

Begin:

1986-10-01

End:

1986-10-01

People and Organizations
Contact:	Data Manager(Jornada Basin LTER) [ email ]
Creator:	Silva, Solange (New Mexico State University)
Creator:	Whitford, Walt (New Mexico State University)
Creator:	Virginia, Ross (New Mexico State University)
Associate:	McBride, Robin (New Mexico State University, Graduate Student)

Data Entities
Data Table Name:	JRN Pre-dawn water potential, 2007-2008
Description:	Pre-dawn water potential for 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/210409009/74/b74fc701573b002c0c7c5afa4b8ad848
Name:	JRN Pre-dawn water potential, 2007-2008
Description:	Pre-dawn water potential for 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:

c522900dff8c87731d8f6c095171ef98 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:

Date data was collected

Plot number established by Sala<ca>

plant species measured for water potential 4-letter plant species code

Precipitation treatment of the plot

leaf 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, nutrients, soil chemistry, plant ecology, soil properties, soil samples, nitrogen mineralization, soil
Jornada Project Names	study 394, study 409
JRN Dataset Keywords	LTER I, Land-Atmosphere Interactions
Jornada Place Names	JER
LTER Core Area	Inorganic Nutrients

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 study nitrogen concentrations of soils associated with mesquite (Prosopis glandulosa), 5 sites were established at the Jornada Basin in 1986. To compare across ecosystems, mesquite soil was sampled at four sites representing different mesquite habitats - playa, coppice dune, arroyo/wash, and grassland. An ecosystem dominated by the non-legume, Larrea tridentata, and lacking mesquite was also included as a reference.

Soils were sampled on October 1, 1986. The soil samples were augered from two depths (0-15cm, 15-30cm) from four canopy positions, (1) stem base, (2) mid-canopy, (3) outer edge-of-canopy, and (4) interzone-- one canopy distance (radius) away from the edge of the shrub canopy in an unvegetated interzone. Four shrubs were sampled at each habitat. Soil samples were air-dried in a glasshouse and ground to pass a 2-mm sieve. Total N was digested by Kjeldahl digestion block techniques (Bremner and Mulvaney, 1982). Digest NH4-N was analyzed using an automated salicylate procedure (Technicon Industrial Method No. 329-74W/B). Inorganic N (NH4-N and NO3 + NO2-N) was extracted with 2M KCl (Keeney and Nelson, 1982). Ammonium-N in the extracts was analyzed colorimetrically (indophenol blue) in an automated procedure (Technicon Industrial Method No. 154-71) and NO3 + NO2-N was measured by an automated Cd reduction colorimetric procedure (Technicon Industrial Method No. 100-70W/).

The data set includes the date of collection, habitat, replication, position, depth, and distance of sample, Total Kjeldahl Nitrogen (g/kg), NH4 (mg/kg), NO3 (mg/kg), and total inorganic N (mg/kg). This study was completed on October 1, 1986.

People and Organizations

Creators:

Individual:	Solange Silva
Organization:	New Mexico State University

Individual:	Walt Whitford
Organization:	New Mexico State University
Id:	https://orcid.org/0000-0003-1155-6162

Individual:	Ross Virginia
Organization:	New Mexico State University

Contacts:

Individual:

Data Manager

Organization:

Jornada Basin LTER

Email Address:

datamanager.jrn.lter@gmail.com

Associated Parties:

Individual:	Robin McBride
Organization:	New Mexico State University
Role:	Graduate Student

Temporal, Geographic and Taxonomic Coverage

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

Time Period

Begin:

1986-10-01

End:

1986-10-01

Geographic Region:

Description:

Basin_Floor

Bounding Coordinates:

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

Project

Parent Project Information:

Title:

Jornada Basin LTER (I/II)

Personnel:

Individual:	Walt Whitford
Organization:	New Mexico State University
Role:	Principal Investigator

Funding:

NSF DEB 8612106

Related Project:

Title:

Jornada Basin LTER (I/II)

Personnel:

Individual:	Ross Virginia
Role:	Principal Investigator

Funding:

NSF DEB 8612106

Maintenance

Maintenance:

Description:	complete
Frequency:

Additional Info


Additional Information:
	Creosotebush zone plots (C) in Caliche area (CALI) about 40 meters upslope from C-CALI NPP site, and in area of termite studies (TERM) located about 300 meters west of Upper Trailer. Grassland (G) plots at Mt. Summerford (SUMM) upslope of powerline, and about 50 meters east of LTER-I Alternate Control Transect, and about 30 meters west of the southwest corner of the IBP exclosure on the USDA Jornada Experimental Range.

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  '

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Data Package Metadata View Summary

Pre-dawn Water Potential for leaves from Reduced and Enhanced Precipitation Treatments on the Jornada Basin, 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 Info

Additional Metadata

Recently Added

Recently Updated

Data Package Metadata View Summary

Pre-dawn Water Potential for leaves from Reduced and Enhanced Precipitation Treatments on the Jornada Basin, 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 Info

+/- Additional Metadata

Data Entities

Data Package Usage Rights

Keywords

Methods and Protocols

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Maintenance

Additional Info

Additional Metadata