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Effects of microarthropod exclusion and water amendments on fluffgrass rhizosphere nitrate (NO3) at the Jornada Basin LTER, 1986-1987

General Information
Data Package:
Local Identifier:knb-lter-jrn.210385005.33
Title:Effects of microarthropod exclusion and water amendments on fluffgrass rhizosphere nitrate (NO3) at the Jornada Basin LTER, 1986-1987
Alternate Identifier:DOI PLACE HOLDER
Abstract:

This data package contains data on nitrogen (as nitrate, NO3-) availability, measured with ion exchange resin bags, in fluffgrass (

Dasyochloa pulchella

) rhizosphere soil from 1986-1987. The purpose of this study was to test how watering, and changing densities of soil microarthropods and nematodes, results in changes in fluff grass growth. An ion exchange resin bag technique (Binkley 1984, Lajtha 1988) was used to determine nitrate availability. 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 (to exclude microarthropods), 2) Chlordane and water, 3) Water, and 4) Control. Eight anion exchange bags were placed in the rhizosphere of a fluffgrass plant in each plot. Bags were left in the field 3 months, collected, brought to the lab and analyzed for available nitrate (NO3-) using an automated cadmium reduction procedure. The data table contains bag collection date, treatment, and NO3 (mg/kg) concentration. This study is complete.

Publication Date:2020-04-24

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

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

Data Entities
Data Table Name:
JRN_385005_fluffgrass_rhiz_anionNO3.csv
Description:
Available nitrate N in fluff-grass rhizosphere soil in treated (mite exclusion, watering) plots
Detailed Metadata

Data Entities

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210385005/33/13891886008f83975146f46deb28c928
Name:JRN_385005_fluffgrass_rhiz_anionNO3.csv
Description:Available nitrate N in fluff-grass rhizosphere soil in treated (mite exclusion, watering) plots
Number of Records:320
Number of Columns:5

Table Structure
Object Name:JRN_385005_fluffgrass_rhiz_anionNO3.csv
Size:4764 bytes
Authentication:de7b1c0bb9fa722089f75b49b8ea2fe3 Calculated By MD5
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 
Column Name:DATE  
PLOT  
TRT  
SAMPLE  
NO3  
Definition:Resin bag collection date [1 or 2 for first & second collection - actual dates are unknown, but between 1986-11-15 and 1987-02-15]Plot number [1-20]Treatment [C=control, W=water, CHW=chlordane and water, CH=chlordane]Sample number [1-8]Nitrate (NO3) 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
DefinitionFirst collection, between<ca> 1986-11-15 and 1987-02-15
Source
Code Definition
Code2
DefinitionSecond collection, between<ca> 1986-11-15 and 1987-02-15
Source
DefinitionPlot number [1-20]
Allowed Values and Definitions
Enumerated Domain 
Code Definition
CodeW
DefinitionWater
Source
Code Definition
CodeC
DefinitionControl
Source
Code Definition
CodeCHW
DefinitionChlordane and water
Source
Code Definition
CodeCH
DefinitionChlordane
Source
DefinitionSample number [1-8]
UnitmilligramsPerKilogram
Typereal
Min0 
Max3.63 
Missing Value Code:        
CodeNA
ExplNo data 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 Namesstudy 385
LTER Core AreaInorganic Nutrients
JRN Dataset KeywordsLTER I
LTER Controlled Vocabularymites, invertebrates, desert, grasses, roots, ammonium, cations, herbivory, soil nutrients, soil nitrogen, nutrient cycling, arthropods, soil, rhizosphere
Jornada Place NamesCDRRC
(No thesaurus)chlordane, exclusion, resin, cation exchange

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 at the Chihuahuan Desert Rangeland Research Center (CDRRC)in the Jornada Basin in 1986. Five plots each were randomly assigned to one of four treatments: (1) chlordane amendment (100ml AI (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 AI per 10,000 ml) and (4) control, no treatment.

An ion exchange resin bag technique (Binkley 1984, Lajtha 1988) was used to determine N availability in the rhizosphere of fluffgrass (

Dasyochloa pulchella

). A 50 cm2 area of undyed nylon stocking material was sewn into a bag containing 10 g (wet weight) of either Dowex 1-X8 anion exchange resin or Dowex 50 W- X8 cation exchange resin, both 20-50 mesh. Anion resins were placed in three successive rinses of 0.5 M NaHCCO3, converting resins to the bicarbonate form. Cation resin bags, already in the H+ form, were rinsed three successive times with dilute HC1. All bags were rinsed with deionized water and spun dry in an open-basket hand centrifuge before being taken to the field. Eight bags of anion and two bags of cation exchange resin were placed in each plot (total 20 plots), directly in the rhizosphere of a plant (12 Dasyochloa pulchella 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. Anion and cation bags were desorbed in 2.0 M KC1 + PMA (to avoid bacterial and fungal growth). Samples were shaken 30 times, let set overnight, and filtered. The solution was analyzed for NH4-N using an automated salicylate procedure (Wall and Gehrke, 1975; Nelson 1983) and NO3 + NO2 -N using an automated cadmium reduction procedure (Henriksen and Selmer-Olsen 1970). Standards containing anion or cation exchange resin bags were extracted the same as field exchange resin bags.

People and Organizations

Creators:
Individual: Silva Solange
Organization:New Mexico State University
Individual: Walt Whitford
Organization:New Mexico State University
Id:https://orcid.org/0000-0003-1155-6162
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:
1986-11-15
End:
1987-02-15
Geographic Region:
Description:Basin_Floor
Bounding Coordinates:
Northern:  32.7494871Southern:  32.47317259
Western:  -106.8728831Eastern:  -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:

Additional Info

Additional Information:
 

This study was conducted in the Jornada del Muerto Basin on the NSF Long-Term Ecological Research (LTER) site, located on the New Mexico State University College Ranch 40 km NNE of Las Cruces, Dona Ana County, New Mexico. The site lies on an alluvial piedmont (bajada) sloping from west to the east and north. The non-arroyo areas of the upper bajada where this study was conducted have an essentially monospecific shrub cover of creosotebush and support a veriety of annuals and the small perennial grass Dasyochloa pulchella (fluff grass). Study plots were established in an area that is downslope from the LTER Upper Trailer and immediately downslope from the road running from the NMSU College Ranch headquarters SSE past the LTER Weather Station and exiting the College Ranch at the south boundary on the same powerline road that runs on along the north side of Mt. Summerford in the Dona Ana Mountains.

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' = 'gramsPerGram'
        |     |     |     |  \___attribute 'unitType' = 'massPerMass'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'milligrams per kilogram'
        |     |     |     |___text '\n        '
        |     |     |___text '\n      '
        |     |___text '\n    '
        |___text '\n  '

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