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Effects of Chlordane and Water Amendments on Nitrate in the Rizhosphere of Fluffgrass on the Jornada Basin LTER, 1986-1987

General Information
Data Package:
Local Identifier:knb-lter-jrn.210385005.24
Title:Effects of Chlordane and Water Amendments on Nitrate in the Rizhosphere of Fluffgrass on the Jornada Basin LTER, 1986-1987
Alternate Identifier:DOI PLACE HOLDER
Abstract:

Recent studies suggest that rhizosphere soil microarthropods may have a major role in determining soil nitrogen availability. Desert soil microarthropods are consumers of soil bacteria, fungi, and nematodes, thus they accelerate mineralization processes by causing turnover in immobilized nitrogen. This study was part of a larger investigation in which nematodes, mites, litter, and plant material was also collected. Twenty 6 x 6 m plots were established in areas comprised of fluffgrass (Erioneuron pulchellum) with a 3 m buffer between plots. Five plots were randomly assigned to one of four treatments: (1) chlordane amendment 100ml AI (active ingredients) per 10,000 ml) to exclude microarthropods, (2) sprinkler irrigation (6 mm per week), (3) sprinkler irrigation (6 mm/week) plus chlordate amendment (as above), (4) control (no treatment). For this portion of the study, cation exchange bags were placed in the rhizosphere of a fluffgrass in each plot. Bags were left in the field 3 months, collected, brought to the lab and analyzed for NO3 -N using a cadmium reduction procedure.

For additional data from this larger study, refer to other JRN packages that are part of study 385, including 210385004, 210385002, 210385003, 210385008, 210385006, 210385001. Sampling occurred in 1987. This study is complete.

This dataset is from the following thesis:

Silva, Solange Inacia. 1989. The effects of microarthropods on nitrogen availability within the rhizosphere of Erioneuron pulchellum in a northern Chihuahuan Desert ecosystem. New Mexico State University: Las Cruces, NM.

Publication Date:2019-07-17

Time Period
Begin:
1986-11-15
End:
1987-02-15

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

Data Entities
Data Table Name:
Fluffgrass NO3 Using Anion Exchange 1986-1987
Description:
Fluffgrass NO3 Using Anion Exchange 1986-1987
Detailed Metadata

Data Entities

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210385005/24/8fdc2a2c716c9204f52fb651e6947a2e
Name:Fluffgrass NO3 Using Anion Exchange 1986-1987
Description:Fluffgrass NO3 Using Anion Exchange 1986-1987
Number of Records:320
Number of Columns:5

Table Structure
Object Name:data_JornadaStudy_385_fluff_grass_anion_exchange_resin_nO3.csv
Size:5124 bytes
Authentication:3cb0f794c64d37f2613d077c6e499b27 Calculated By MD5
Text Format:
Number of Header Lines:1
Record Delimiter:\r\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 
Column Name:COLLECTION_DATE  
PLOT  
TRT  
SAMPLE  
NO3  
Definition:1=11/15/1986; 2=02/15/1987Plot Number (1-20)C=Control: W=Water; CHW=Chlordate and water; CH=ChlordaneSample Number (9 or 10)Nitrate in mg/kg dry soil
Storage Type:string  
string  
string  
string  
float  
Measurement Type:nominalnominalnominalnominalratio
Measurement Values Domain:
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
Definition11/15/1986
Source
Code Definition
Code2
Definition2/15/1987
Source
DefinitionPlot Number (1-20)
Allowed Values and Definitions
Enumerated Domain 
Code Definition
CodeW
DefinitionWater
Source
Code Definition
CodeC
DefinitionControl
Source
Code Definition
CodeCHW
DefinitionChlordate and Water
Source
Code Definition
CodeCH
DefinitionChlordane
Source
DefinitionSample Number (9 or 10)
UnitmilligramsPerKilogram
Typereal
Min0 
Max3.63 
Missing Value Code:        
CodeNULL
Expldata missing
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 AreaInorganic Nutrients
JRN Dataset KeywordsPlant, Nitrogen, and Micro-nutrients, non-core
LTER Controlled Vocabularynitrogen, anions, nitrate
mineralizationmineralization
keywordschlordane, fluffgrass

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 were established with a 3 m buffer between plots. Five plots were randomly assigned to one of four treatments: (1) chlordane amendment 100ml AI (active ingredients) per 10,000 ml) to exclude microarthropods, (2) sprinkler irrigation (6 mm per week), (3) sprinkler irrigation (6 mm/week) plus chlordate amendment (as above), (4) control (no treatment). A 50 cm2 area of undyed nylon stocking material was sewn into a bag containing 10 g (wet weight) of Dowex 50 W-X8 cation exchange resin, 20-50 mesh. Cation resins already in the H+ form, were rinsed three successive times with dilute HCl. Bags were rinsed with deionized water and spun dry in an open-basket hand centrifuge before being taken to the field. Two bags of cation exhange resin were placed in each plot (total of 20 plots), directly in the rhizosphere of a plant (12 plants per plot) at approximately 10 cm depth. Bags were replaced every 12 weeks for 9 months. Bags were rinsed thoroughly in deionized water and spun dry upon collection from the field. Cation bags were desorbed in 2.0 M KCl + PMA (to avoid bacterial and fungal growth). Samples were shaken 30 times, let set overnight and filtered. The solution was analyzed for N03 + NO2-N using an automated cadmium reduction procedure (Henriksen and Selmer-Olsen 1970).

People and Organizations

Creators:
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:
1986-11-15
End:
1987-02-15
Geographic Region:
Description:Our study site is located in the northern Chihuahuan Desert, approximately 25 km northeast of Las Cruces, New Mexico, USA (+32.6 N, -106.7 W, elevation 1315 m). Annual precipitation is 24 cm and maximum temperatures average 13 C in January and 36 C in June. Our study site includes the 78,000 ha Jornada Experimental Range operated by the USDA Agricultural Research Service (http://jornada.nmsu.edu/), and the 22,000 ha Chihuahuan Desert Rangeland Research Center (CDRRC, http://chihuahuansc.nmsu.edu/) operated by New Mexico State University (http://www.nmsu.edu/). Please contact our data manager for more detailed location information (datamanager.jrn.lter@gmail.com)
Bounding Coordinates:
Northern:  32.488Southern:  32.669
Western:  -106.865Eastern:  -106.713

Project

Maintenance

Maintenance:
Description:Sampling occurred in 1986 and 1987. This data collection is complete
Frequency:
Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'milligramsPerKilogram'
        |     |     |     |  \___attribute 'multiplierToSI' = '1'
        |     |     |     |  \___attribute 'name' = 'milligramsPerKilogram'
        |     |     |     |  \___attribute 'parentSI' = 'milligramsPerKilogram'
        |     |     |     |  \___attribute 'unitType' = 'mass'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'milligrams in a kilo gram'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'percent'
        |     |     |     |  \___attribute 'multiplierToSI' = '1'
        |     |     |     |  \___attribute 'name' = 'percent'
        |     |     |     |  \___attribute 'parentSI' = 'percent'
        |     |     |     |  \___attribute 'unitType' = 'dimensionless'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'percent'
        |     |     |     |___text '\n        '
        |     |     |___text '\n      '
        |     |___text '\n    '
        |___text '\n  '

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