Data Package Metadata View Summary

Fluffgrass rhizosphere nitorgen mineralization potential at the Jornada Basin, 1987

General Information

Data Package:
Local Identifier:	knb-lter-jrn.210385002.47
Title:	Fluffgrass rhizosphere nitorgen mineralization potential at the Jornada Basin, 1987
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	This data package contains data on nitrogen mineralization potential of the rhizosphere of Erioneuron pulchellum at the Jornada Basin CDCC in 1987. The study was conducted on twenty 6 x 6 meter plots. Five plots were randomly assigned to one of 4 treatments: 1. Chlordane amendment (100ml Al per 10,000ml) to exclude microarthropods; 2. Sprinkler irrigation (6mm/week); 3. Sprinkler irrigation (6mm/week) + chlordane (same as first treatment); 4. Control. Three randomly located subsamples were taken from each plot and consisted of the fluff grass plant, a 10 cm in diameter and 15 cm deep soil core centered on each plant. Some samples were incubated for 0, 2, 4, or 8 weeks. This data set contains information on the incubation time, soil nitrate- NO3, soil ammonium- NH4, and soil water content for each subsample. This dataset was collected in May 1987 and is complete. This data package contains fluffgrass (Erioneuron pulchellum) rhizospehere data from 1987. The purpose of this study was to test if changing densities of soil microarthropods and nematodes results in changes in fluffgrass rhizosphere nitrogen mineralization potential. Twenty plots (each 6m x 6m) with 3-meter buffers between were established on the Jornada Basin CDRCC. Four treatments were assigned to 5 plots each 1) Chlordane (to exclude microarthropods), 2) Chlordane and water, 3) Water, and 4) Control. Randomly selected fluff grass plants were collected from each plot, and nitrogen mineralization analysis was performed on rhizosphere soil cores. Net nitrogen mineralization was estimated using batch incubation procedures for 0, 2, 4, and 8 weeks. This data set consists of sampling date, treatment, incubation time, soil nitrate (mg/kg), soil ammonium (mg/kg), and soil water content (SWC). This study is complete.
Publication Date:	2020-04-10

Time Period

Begin:

1987-05-01

End:

1987-05-01

People and Organizations
Contact:	Manager, Data [ email ]
Creator:	Whitford, Walt
Creator:	Solange, Silva
Associate:	Jornada Basin LTER

Data Entities
Data Table Name:	JRN_385002_fluffgrass_nit_mineral_data.csv
Description:	Fluffgrass rhizosphere nitorgen mineralization potential at the Jornada Basin, 1987

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210385002/47/346406e95dc76d888706734eee2b4821
Name:	JRN_385002_fluffgrass_nit_mineral_data.csv
Description:	Fluffgrass rhizosphere nitorgen mineralization potential at the Jornada Basin, 1987
Number of Records:	300
Number of Columns:	8

Table Structure

Object Name:

JRN_385002_fluffgrass_nit_mineral_data.csv

Size:

11839 bytes

Authentication:

93d6f1c219e158488f9e688266b639c8 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:

Table Column Descriptions

Column Name:

DATE

INC_TIME

PLOT

TRT

SUBSAMPLE

NO3

NH4

SWC

Definition:

Date data was collected

Incubation time for nitorgen mineralization analysis (weeks)

Plot ID number [1-20]

Treatment ID

Subsample number [1-3] for nitrogen mineralization analysis

Soil nitrate (mg/kg)

Soil ammonium (mg/kg)

Soil Moisture Content (percent)

Storage Type:

date

string

float

Measurement Type:

dateTime

nominal

ratio

Measurement Values Domain:

Format	YYYY-MM-DD
Precision

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	F
Definition	Field extraction (upon return to lab)
Source

Code Definition

Code	0
Definition	0 weeks
Source

Code Definition

Code	2
Definition	2 weeks
Source

Code Definition

Code	4
Definition	4 weeks
Source

Code Definition

Code	8
Definition	8 weeks
Source

Definition

Plot ID number [1-20]

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	CH
Definition	Chlordane
Source

Code Definition

Code	W
Definition	Water
Source

Code Definition

Code	CHW
Definition	Chlordane and water
Source

Code Definition

Code	C
Definition	Control
Source

Definition

Subsample number [1-3] for nitrogen mineralization analysis

Unit	milligramsPerKilogram
Type	real
Min	0.04
Max	39.96

Unit	milligramsPerKilogram
Type	real
Min	0
Max	15.13

Unit	milligramsPerKilogram
Type	real
Min	0.96
Max	9.43

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:
Jornada Project Names	Study 385
LTER Core Area	Popultations
JRN Dataset Keywords	LTER I, Plant, Nitrogen, and Micronutrients
LTER Controlled Vocabulary	nematodes, invertebrates, desert, grasses, plant communities, plant physiology, plant properties, permanent plots, plant growth, nutrient cycling
Jornada Place Names	CDRRC

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:

Twenty 6 x 6 m plots with a 3-meter buffer zone were established on the Jornada Basin CDRCC in 1986. Five plots each were randomly assigned to one of four treatments: (1) chlordane amendment (100ml Al (Active Ingredients) per 10,000 ml) to exclude microarthropods, (2) water (irrigation 6 mm per week), (3) water (6 mm per week) plus chlordane amendment (100 ml Al per 10,000 ml) and (4) control, no treatment. In May, randomly selected fluffgrass rhizospheres from each plot were selected for nitrogen mineralization analysis.

Net mineralizable N was estimated using batch incubation procedures for 0, 2, 4, and 8-week incubation periods. Soil subsamples (25g) were incubated at 35 C in 50-mL plastic vials covered with 0.0125 mm polyethylene film and seal with rubber bands to reduce moisture loss. Moisture content was adjusted to 10% water content by weight at weekly intervals by injecting deionized water through a small hole in the film with a syringe. Subsamples were removed for inorganic N (NH4-N and NO3 +NO2-N) determination following 2, 4, and 8-week incubation periods. Inorganic N was extracted by placing 10 g of soil into polyethylene bottles containing 100 ml of 2.0 Molar KCL + PMA (to prevent growth by bacteria and fungi). Samples were shaken 30 times, set for 24 hours, and then filtered. NH4 -N was measured by an automated salicylate procedure (Wall and Gehrke, 1975) an NO3 + NO2-N by an automated cadmium reduction procedure (Henriksen and Selmer-Olsen 1970). Net N mineralization was calculated at the net change in N occurring from the beginning to the end of each incubation.

Gravimetric soil moisture was determined for all the samples used for inorganic N and nitrogen mineralization potential. Ten grams of well-mixed soil from each sample were oven-dried for 48 hours at 105 C, and reweighed.

People and Organizations

Creators:

Individual:

Walt Whitford

Individual:

Silva Solange

Contacts:

Individual:

Data Manager

Email Address:

datamanager.jrn.lter@gmail.com

Associated Parties:

Individual:

Jornada Basin LTER

Email Address:

https://jornada.nmsu.edu/lter

Role:

Organization

Temporal, Geographic and Taxonomic Coverage

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

Time Period

Begin:

1987-05-01

End:

1987-05-01

Geographic Region:

Description:

Basin_Floor

Bounding Coordinates:

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

Project

Parent Project Information:

Title:

LTER I

Personnel:

Individual:	Walt Whitford
Role:	Principal Investigator

Funding:

No funding to report

Maintenance

Maintenance:

Description:	complete
Frequency:

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'milligramsPerKilogram'
        |     |     |     |  \___attribute 'multiplierToSI' = '0.000001'
        |     |     |     |  \___attribute 'name' = 'milligramsPerKilogram'
        |     |     |     |  \___attribute 'parentSI' = 'gram'
        |     |     |     |  \___attribute 'unitType' = 'mass'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'milligrams in a kilogram'
        |     |     |     |___text '\n        '
        |     |     |___text '\n      '
        |     |___text '\n    '
        |___text '\n  '

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Data Package Metadata View Summary

Fluffgrass rhizosphere nitorgen mineralization potential at the Jornada Basin, 1987

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

Fluffgrass rhizosphere nitorgen mineralization potential at the Jornada Basin, 1987

+/- 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