Data Package Metadata View Summary

Microarthropod and nematode effects on soil nitrogen availability in fluffgrass mesocosms at the Jornada Basin LTER site, 1986-1987

General Information

Data Package:
Local Identifier:	knb-lter-jrn.210385001.37
Title:	Microarthropod and nematode effects on soil nitrogen availability in fluffgrass mesocosms at the Jornada Basin LTER site, 1986-1987
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	This data package contains soil nitrogen measurements taken over a 12-week interval in soils treated to exclude microarthropods and nematodes. The purpose of this study was to test if changing densities of soil microarthropods and nematodes results in changes in soil nitrogen availability. In 1986 and 1987, 110 fluff grass ( Dasyochloa pulchella ) plants were collected from the Jornada Basin College Ranch and transplanted into pots, which contained 5 replicates of each treatment. The 4 treatments include 1) control, 2) NEMACUR (to exclude nematodes), 3) chlordane (to exclude mites) and 4) NEMACUR + Chlordane. Each was sampled 5 times during a 12-week interval after the initial treatment. Pots were watered weekly to maintain conditions at field capacity. Samples were taken from the rhizosphere and analyzed for NO3(-)- N, NH4(+)-N, Inorganic-N, microbial-N, % H20, % organic matter, root biomass, and nematode density. This study was completed in 1987.
Publication Date:	2020-04-15

Time Period

Begin:

1986-12-05

End:

1987-04-14

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_385001_fluffgrass_mites_data.csv
Description:	Soil N and other measurements in treated (mite & nematode exclusion) fluffgrass mesocosm soils

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210385001/37/c77f1a389b366a32c08f0843605dee04
Name:	JRN_385001_fluffgrass_mites_data.csv
Description:	Soil N and other measurements in treated (mite & nematode exclusion) fluffgrass mesocosm soils
Number of Records:	110
Number of Columns:	11

Table Structure

Object Name:

JRN_385001_fluffgrass_mites_data.csv

Size:

6215 bytes

Authentication:

a458fdde4d1ca582de98c421c2773d88 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:

Table Column Descriptions

Column Name:

DATE

TRT

SAMPLE

NO3_N

NH4_N

MICRO_N

H2O

ORGMATR

RTWT

NEM

INORG_N

Definition:

Sampling date

Treatment [C, Ne, NeCH, CH]

Sample Number [1-10]

Nitrate-N (mg/kg dry soil)

Ammonium-N (mg/kg dry soil)

Microbial-N (mg/kg dry soil)

Soil Moisture Content (% soil dry weight)

Soil Organic Matter (% soil dry weight)

Root Weight (dry weight in g)

Nematode Density (number/kg dry soil)

Inorganic Nitrogen (mg/kg dry soil)

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	C
Definition	Control
Source

Code Definition

Code	Ne
Definition	Nemacure treatment (excludes nematodes)
Source

Code Definition

Code	NeCH
Definition	Chlordane + Nemacur treatment
Source

Code Definition

Code	CH
Definition	Chlordane treatment (exludes mites)
Source

Definition

Sample Number [1-10]

Unit	milligramsPerKilogram
Type	real
Min	0.06
Max	21.12

Unit	milligramsPerKilogram
Type	real
Min	0.12
Max	17.81

Unit	milligramsPerKilogram
Type	real
Min	0
Max	1.18

Unit	dimensionless
Type	real
Min	2.06
Max	15.81

Unit	dimensionless
Type	real
Min	0.89
Max	2.07

Unit	gram
Type	real
Min	0.1
Max	1.56

Unit	numberPerKilogram
Type	natural
Min	12
Max	4419

Unit	milligramsPerKilogram
Type	real
Min	0.16
Max	29.2

Missing Value Code:

Code	NA
Expl	no data available

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 Core Area	Inorganic Nutrients, Organic Matter
JRN Dataset Keywords	LTER I, Plant, Nitrogen, and Micronutrients, study 385
LTER Controlled Vocabulary	nematodes, mites, invertebrates, herbivory, nitrogen, soil chemistry, soil samples, soil nutrients, organic matter, desert, grasses, roots
Jornada Place Names	CDRRC
(No thesaurus)	mesocosm, chlordane, exclusion

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:

One hundred and ten fluff grass plants were transplanted into pots, divided into 5 replicates of each of 4 treatments: 1) control, 2) NEMACUR (to exclude nematodes), 3) chlordane (to exclude mites) and 4) NEMACUR + Chlordane. Replicates were assigned to one of 5 sampling times (0,2,4,8,12 weeks), and transferred to a green house. Pots were watered weekly (6mm/week) to maintain them at field capacity. For each sampling time, rhizosphere soil was analyzed for NO3(-)- N, NH4(+)-N, Inorganic-N, microbial-N, % H20, % Organic matter, roots biomass, and nematode density.

Microarthropods were extracted in modified Tullgren funnels into water, then counted and identified to species. 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). Remaining soil was sieved through a 2-mm screen mesh.

Inorganic N (NH4 -N and NO3 +NO2 -N) was extracted by placing 10 g sub-sample of each soil sample in polyethylene bottles containing 100 ml of 2.0 Molar KCL + PMA ( to prevent growth by bacteria and fungi) (Keeney and Nelson 1982). Sub-samples were shaken 30 times and filtered after setting overnight NH4 -N was measured in the extracts by an automated salicylate procedure (Wall and Gehrke 1975, Nelson 1983). NO3 + NO2 -N was measured using an automated cadmium reduction procedure (Henriksen and Selmer-Olsen 1970). Automated measurements were made on a Scientific Instruments Continuous Flow Analyzer.

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:

1986-12-05

End:

1987-04-14

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:	Completed
Frequency:

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'numberPerKilogram'
        |     |     |     |  \___attribute 'multiplierToSI' = '1000'
        |     |     |     |  \___attribute 'name' = 'numberPerKilogram'
        |     |     |     |  \___attribute 'parentSI' = 'numberPerGram'
        |     |     |     |  \___attribute 'unitType' = 'massSpecificCount'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'number in a kilogram'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'milligramsPerKilogram'
        |     |     |     |  \___attribute 'multiplierToSI' = '0.000001'
        |     |     |     |  \___attribute 'name' = 'milligramsPerKilogram'
        |     |     |     |  \___attribute 'parentSI' = 'gramsPerGram'
        |     |     |     |  \___attribute 'unitType' = 'massPerMass'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'milligrams in a kilogram'
        |     |     |     |___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

Microarthropod and nematode effects on soil nitrogen availability in fluffgrass mesocosms at the Jornada Basin LTER site, 1986-1987

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

Microarthropod and nematode effects on soil nitrogen availability in fluffgrass mesocosms at the Jornada Basin LTER site, 1986-1987

+/- 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

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Data Package Usage Rights

Keywords

Methods and Protocols

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Maintenance

Additional Metadata