Data Package Metadata View Summary

Microarthropod effects on fluffgrass growth and nitrogen mineralization at the Jornda Basin, 1986

General Information

Data Package:
Local Identifier:	knb-lter-jrn.210385007.50
Title:	Microarthropod effects on fluffgrass growth and nitrogen mineralization at the Jornda Basin, 1986
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	This data package contains fluff grass (_Dasyochloa pulchella_) data from 1987. The purpose of this study was to test if changing densities of soil microarthropods and nematodes results in changes in fluff grass nitrogen mineralization and growth. 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. At monthly intervals, randomly selected fluff grass plants were collected from each plot. This data set consists plant diameters (cm), mite soil weight (g), root weight (g), nematode soil weight (g), root total nitrogen (mg/g), and nematode number. This study was complete in November 1987.
Publication Date:	2020-04-17

Time Period

Begin:

1987-01-01

End:

1987-11-01

People and Organizations
Contact:	Anderson, John (New Mexico State University)
Contact:	Manager, Data (Jornada Basin LTER) [ email ]
Creator:	Whitford, Walt (New Mexico State University)
Creator:	Solange, Silva (New Mexico State University)

Data Entities
Data Table Name:	JRN_385007_fluffgrass_dynamics_data.csv
Description:	Microarthropod effects on fluffgrass growth and nitrogen mineralization at the Jornda Basin, 1986

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210385007/50/502415e13e32c1b734107b44c2dcd9d6
Name:	JRN_385007_fluffgrass_dynamics_data.csv
Description:	Microarthropod effects on fluffgrass growth and nitrogen mineralization at the Jornda Basin, 1986
Number of Records:	660
Number of Columns:	14

Table Structure

Object Name:

JRN_385007_fluffgrass_dynamics_data.csv

Size:

36063 bytes

Authentication:

29c1f1dc0e1d577de8fcb43d32ae0280 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:

Table Column Descriptions

Column Name:

DATE

PLOT

TRT

SAMPLE

DIAM1

DIAM2

MITE_SOIL_WT

ROOTWT

NEMATODE_SOIL_WT

ROOT_TOTN1

ROOT_TOTN2

NEMATODE

qflag_ROOT_TOTN1

Definition:

Date data was collected

Plot number

Treatment

Sample number

Plant diameter 1

Plant diameter 2

Plant height

Mites soil weight

Root weight (g/kg)

Nematode soil weight

Root Total Nitrogen from digestion 1 (mg/g)

Root Total Nitrogen from digestion 2 (mg/g)

Number of nematodes

Quality flag for ROOT_TOTN1 field

Storage Type:

date

string

float

string

Measurement Type:

dateTime

nominal

ratio

nominal

Measurement Values Domain:

Format	YYYY-MM-DD
Precision

Definition

Plot number

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	W
Definition	Water
Source

Code Definition

Code	C
Definition	Control
Source

Code Definition

Code	CH
Definition	Chlordane
Source

Code Definition

Code	CHW
Definition	Chlordane and Water
Source

Definition

Sample number

Unit	centimeter
Type	real
Min	5
Max	80

Unit	centimeter
Type	real
Min	1
Max	22

Unit	centimeter
Type	real
Min	4
Max	14

Unit	gram
Type	natural
Min	304
Max	1793

Unit	gramsPerKilogram
Type	real
Min	0
Max	1

Unit	gram
Type	real
Min	4.96
Max	400

Unit	milligramsPerGram
Type	real
Min	4.38
Max	8.49

Unit	milligramsPerGram
Type	real
Min	3.99
Max	526

Unit	number
Type	real
Min	32
Max	1012

Definition

Quality flag for ROOT_TOTN1 field

Missing Value Code:

Code	NA
Expl	Data not collected

Code	NA
Expl	Data not collected

Code	NA
Expl	Data not collected

Code	NA
Expl	Data not collected

Code	NA
Expl	Data not collected

Code	NA
Expl	Data not collected

Code	NA
Expl	Data not collected

Code	NA
Expl	Data not collected

Code	NA
Expl	Data not collected

Code	NA
Expl	Data not collected

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, trophic dynamics, plant properties, plant height, permanent plots, plant growth
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. During each month (January-November) randomly selected fluff grass plants from each plot were clipped at ground level and collected in a paper bag for height and diameter measurements. In addition, rhizosphere core samples (10 cm diameter, 15 cm depth) were taken for each plant collected. These samples were placed in a plastic bag, stored in a cooler, and transported to the lab. The first subsamples of roots were separated from soil using a 2 mm sieved and cleaned by hand, then oven dried at 50 C for 96 hours. Afterwards, the roots were weighed and ground up in a Wiley Mill for total nitrogen analyses. A micro Kjeldhal digestion was used to prepare samples using an aluminum block digestor. Nitrogen analyses were performed on the digest using automated procedures on a Scientific Instruments Continuous Flow Analyzer. The second rhizosphere subsamples were used for microarthropod and nematode extractions. Microarthropods were extracted in a modified Tullgren funnels into water (Santos et al. 1978), then counted and identified to species (Krantz 1978). After microarthropod extraction, the soil was sieved through a 2-mm screen mesh and roots were collected. On subsamples for nematode extraction, roots were carefully separated by hand, then nematodes were extracted by a modified sugar flotation technique (Freckman et al. 1977).

People and Organizations

Creators:

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

Individual:	Silva Solange
Organization:	New Mexico State University

Contacts:

Individual:	John Anderson
Organization:	New Mexico State University
Id:	https://orcid.org/0000-0002-6417-8022

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:

1987-01-01

End:

1987-11-01

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

Maintenance

Maintenance:

Description:	complete
Frequency:

Other Metadata

Additional Metadata

additionalMetadata
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        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'milligramsPerGram'
        |     |     |     |  \___attribute 'multiplierToSI' = '0.001'
        |     |     |     |  \___attribute 'name' = 'milligramsPerGram'
        |     |     |     |  \___attribute 'parentSI' = 'gramsPerGram'
        |     |     |     |  \___attribute 'unitType' = 'massPerMass'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'milligrams in a gram'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'gramsPerKilogram'
        |     |     |     |  \___attribute 'multiplierToSI' = '0.001'
        |     |     |     |  \___attribute 'name' = 'gramsPerKilogram'
        |     |     |     |  \___attribute 'parentSI' = 'gramsPerGram'
        |     |     |     |  \___attribute 'unitType' = 'massPerMass'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'grams in a kilogram'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'number'
        |     |     |     |  \___attribute 'multiplierToSI' = '1'
        |     |     |     |  \___attribute 'name' = 'number'
        |     |     |     |  \___attribute 'parentSI' = 'number'
        |     |     |     |  \___attribute 'unitType' = 'number'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'number of individuals'
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        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'gram'
        |     |     |     |  \___attribute 'multiplierToSI' = '0.001'
        |     |     |     |  \___attribute 'name' = 'gram'
        |     |     |     |  \___attribute 'parentSI' = 'kilogram'
        |     |     |     |  \___attribute 'unitType' = 'mass'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text '0.001 kg'
        |     |     |     |___text '\n        '
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        |___text '\n  '

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Data Package Metadata View Summary

Microarthropod effects on fluffgrass growth and nitrogen mineralization at the Jornda Basin, 1986

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

Microarthropod effects on fluffgrass growth and nitrogen mineralization at the Jornda Basin, 1986

+/- 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