Data Package Metadata View Summary

Microarthropod effects on nitrogen availability in fluffgrass mesocosm, 1987

General Information

Data Package:
Local Identifier:	knb-lter-jrn.210385001.34
Title:	Microarthropod effects on nitrogen availability in fluffgrass mesocosm, 1987
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	This data package contains soil nutrient measurements taken over a 12-week interval. The purpose of this study was to test if changing densities of soil microarthropods and nematodes results in changes in soil nitrogen availability. 110 fluff grass (Erioneuron pulchellum) 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. 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, roots biomass, and nematodes density. This study was completed in 1987.
Publication Date:	2019-11-14

Time Period

Begin:

1986-12-05

End:

1987-04-14

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

Data Entities
Data Table Name:	Fluffgrass nitrogen treatments effects on nematodes and mites mesocosm
Description:	Fluffgrass nitrogen treatments effects on nematodes and mites mesocosm

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210385001/34/cf3f847570cf34215287d68ae766feea
Name:	Fluffgrass nitrogen treatments effects on nematodes and mites mesocosm
Description:	Fluffgrass nitrogen treatments effects on nematodes and mites mesocosm
Number of Records:	110
Number of Columns:	11

Table Structure

Object Name:

JRN_385001_fluffgrass_mites_data.csv

Size:

6828 bytes

Authentication:

5bddbf9a9566b0a2449bf16e878e577c Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

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:

Date data collected

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)

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
Source

Code Definition

Code	NeCH
Definition	Chlordane + Nemacur treatment
Source

Code Definition

Code	CH
Definition	Chlordane treatment to exlude 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	NULL
Expl	no data available

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Package Usage Rights

This data package is released to the "public domain" under Creative Commons CC0 1.0 "No Rights Reserved" (see: https://creativecommons.org/publicdomain/zero/1.0/). It is considered professional etiquette to provide attribution of the original work if this data package is shared in whole or by individual components. A generic citation is provided for this data package on the website https://portal.edirepository.org (herein "website") in the summary metadata page. Communication (and collaboration) with the creators of this data package is recommended to prevent duplicate research or publication. This data package (and its components) is made available "as is" and with no warranty of accuracy or fitness for use. The creators of this data package and the website shall not be liable for any damages resulting from misinterpretation or misuse of the data package or its components. Periodic updates of this data package may be available from the website. Thank you.

Keywords

By Thesaurus:
LTER Core Area	Inorganic Nutrients, Organic Matter
JRN Dataset Keywords	Climate, Soils, and Atmosphere, LTER I, Plant, Nitrogen, and Micronutrients
LTER Controlled Vocabulary	nematodes, invertebrates, nitrogen, soil chemistry, soil samples, soil nutrients, organic matter, desert, grasses, roots
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:

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, with 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 nematodes 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

Individual:

Silva Solange

Contacts:

Individual:

John Anderson

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:

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

Maintenance

Maintenance:

Description:	complete
Frequency:

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'numberperkilogram'
        |     |     |     |  \___attribute 'multiplierToSI' = '1'
        |     |     |     |  \___attribute 'name' = 'numberperkilogram'
        |     |     |     |  \___attribute 'parentSI' = 'kilograms'
        |     |     |     |  \___attribute 'unitType' = 'mass'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'number in a kilogram'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'milligramsPerKilogram'
        |     |     |     |  \___attribute 'multiplierToSI' = '1'
        |     |     |     |  \___attribute 'name' = 'milligramsPerKilogram'
        |     |     |     |  \___attribute 'parentSI' = 'kilograms'
        |     |     |     |  \___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

Microarthropod effects on nitrogen availability in fluffgrass mesocosm, 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

Maintenance

Additional Metadata

Recently Added

Recently Updated

Data Package Metadata View Summary

Microarthropod effects on nitrogen availability in fluffgrass mesocosm, 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

+/- 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