Data Package Metadata View Summary

Soil nutrients sampled in and around ant nests in three harvester ant habitats at the Jornada Basin LTER site, 1987

General Information

Data Package:

Local Identifier:

knb-lter-jrn.210368002.31

Title:

Soil nutrients sampled in and around ant nests in three harvester ant habitats at the Jornada Basin LTER site, 1987

Alternate Identifier:

DOI PLACE HOLDER

Abstract:

This dataset contains soil nutrient content measurements from harvester ant nests and reference soils in three nesting habitats at the Jornada Basin LTER site in 1987. The purpose of this investigation was to answer three general questions: 1. How does the modification of soil properties and the ratios of resources (e.g., water-N) by ants alter species assemblages of winter annual plants at the edge of the ant nests? 2. How does the "spring cleaning", clipping, predation or herbivory by ants affect success of the winter annual plants at the edge of ant nests? 3. Are there significant differences in the floristic assemblage and belowground standing crop (root biomass) between the edge of ant nest and the surrounding unaffected soils? Five ant nests and paired (non-nest) reference locations were sampled in three locations. This dataset contains chemical analyses for the soil samples collected for each of the three sites, including total nitrogen, (ammonium, nitrate), inorganic phosphorus, and exchangeable cations (K+, Na+, Ca2+ and Mg2+). Also included is below ground biomass from five ant nests for each of the three sites. This study was completed in 1987.

Publication Date:

2021-12-14

Language:

English

For more information:
Visit:	https://jrn.lternet.edu
Visit:	DOI PLACE HOLDER

Time Period

Begin:

1987-06-24

End:

1987-06-24

People and Organizations
Contact:	Jornada Basin LTER Information Manager (Jornada Basin LTER) [ email ]
Creator:	Di Marco, Rodolfo (New Mexico State University)
Creator:	Whitford, Walter G (Jornada Basin LTER/New Mexico State University)

Data Entities
Data Table Name:	Ant nest soil nutrient data
Description:	Nutrient and belowground biomass data from soils sampled in or around ant nests in 3 habitats, 1987
Other Name:	JRN DSD file (Dataset Documentation)
Description:	Early format Jornada metadata file for this dataset.

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210368002/31/228cc96d48f2875326c0264c48c3533c
Name:	Ant nest soil nutrient data
Description:	Nutrient and belowground biomass data from soils sampled in or around ant nests in 3 habitats, 1987
Number of Records:	60
Number of Columns:	14

Table Structure

Object Name:

JRN368002_ant_nest_soil_nutrient_data.csv

Size:

3663 byte

Authentication:

b723721e933bdba7c6ea25b47bbb25cb Calculated By MD5

Text Format:

Number of Header Lines:

Number of Foot Lines:

Record Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

Sample

Place

Replicate

Treatment

no3

nh4

biomass

Column Name:

sample

place

rep

trt

no3

nh4

biomass

Definition:

Replicate soil sample analysis number (1,2)

Sampling location - one of three locations

Replicate nest number [1-8 in location 1, replicate 1-5 in location 2, replicate 1-7 in location 3]

Treatment [perimeter or reference sample]

Sodium ion - Na+ (mEq/100g soil)

Potassium ion - K+ (mEq/100g soil)

Calcium ion - Ca2+ (mEq/100g soil)

Magnesium ion - Mg2+ (mEq/100g soil)

Nitrate ion - NO3-N (mg/kg soil)

Ammonium ion - NH4-N (mg/kg soil)

Phosphorus (mg/kg soil)

Potassium in Phosphate (mg/kg soil)

Total Nitrogen (mg/kg soil)

Below ground biomass (g/1000 cm3)

Storage Type:

string

integer

string

float

Measurement Type:

nominal

interval

nominal

ratio

Measurement Values Domain:

Definition

any text

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	loc2
Definition	College Playa fringe
Source

Code Definition

Code	loc1
Definition	burrograss-tobosa swale
Source

Code Definition

Code	loc3
Definition	upper basin slope mixed grassess
Source

Unit	number
Type	integer

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	perimeter
Definition	ant nest perimeter
Source

Code Definition

Code	reference
Definition	reference site
Source

Unit	microequivalentsPer100g
Type	real

Unit	microequivalentsPer100g
Type	real

Unit	microequivalentsPer100g
Type	real

Unit	microequivalentsPer100g
Type	real

Unit	milligramPerKilogram
Type	real

Unit	milligramPerKilogram
Type	real

Unit	milligramPerKilogram
Type	real

Unit	milligramPerKilogram
Type	real

Unit	milligramPerKilogram
Type	real

Unit	gramPerLiter
Type	real

Missing Value Code:

Code	NA
Expl	Missing value - data not collected or otherwise unavailable

Code	NA
Expl	Missing value - data not collected or otherwise unavailable

Code	NA
Expl	Missing value - data not collected or otherwise unavailable

Code	NA
Expl	Missing value - data not collected or otherwise unavailable

Code	NA
Expl	Missing value - data not collected or otherwise unavailable

Code	NA
Expl	Missing value - data not collected or otherwise unavailable

Code	NA
Expl	Missing value - data not collected or otherwise unavailable

Code	NA
Expl	Missing value - data not collected or otherwise unavailable

Code	NA
Expl	Missing value - data not collected or otherwise unavailable

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Non-Categorized Data Resource

Name:

JRN DSD file (Dataset Documentation)

Entity Type:

otherEntity

Description:

Early format Jornada metadata file for this dataset.

Physical Structure Description:

Object Name:

ansnutr.dsd.txt

Size:

19191 byte

Authentication:

b3be2ecf2756ba3290ad6df1be4ee799 Calculated By MD5

Externally Defined Format:

Format Name:

text/plain

Data:

https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210368002/31/392ffff125b26f947b8cfc5727b5b805

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) is required 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 Research Areas	disturbance, inorganic nutrients
LTER Controlled Vocabulary v1	LTER, ants, disturbance, insects, soil nutrients
none	Animal, LTER, annual plants, ant nests, disturbance
Jornada Basin LTER dataset keywords	Animal
Jornada Basin project names	study 368

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:

Methods in brief

During winter 1987, eight harvester ant (Pogonomyrmex rugosus) nests at site 1, five harvester ant nests at site 2 and seven ant nests at site 3 were randomly selected and systematically sampled. At each nest, a 0.16 square meter quadrat frame was randomly placed at the ant nest edge, a second 0.16 square meter quadrat was also placed on the ant nest edge opposite to the first quadrat. Two additional quadrat frames were placed 5 meters distance from the two at the edge of the ant nests. These quadrats represent the soil unmodified by the activity of the ants and served as a reference.

On 24 June 1987, soil samples were collected from five ant nests for each of the three sites for analysis of total nitrogen, (ammonium, nitrite, nitrate), inorganic phosphorus, and exchangeable cations (K+, Na+, Ca2+ and Mg2+). The two quadrats of the ant nest edges were randomly sampled once with a 400-cm3 core (20 cm depth) and the soil samples were mixed together. The same procedures were used for the two quadrats of adjacent reference sites.

All chemical analyses were determined on the < 2-mm soil fraction. Total nitrogen was measured by microKjeldahl digestion (Bremmer and Mulvaney, 1982) and analyzed twice. Ammonium (NH4-N), nitrite (NO3-N), and nitrate (NO3-N) were extracted with 100 ml of 2 N KCl on 10-g soil samples and were measured as described by Keeney and Nelson (1982). Inorganic phosphorus (P) was extracted with 100 ml of 0.5 M NaHCO3 on approximately 10-g soil samples and was measured on an autoanalyzer. Exchangeable cations (K+, Na+, Ca2+ and Mg2+) were extracted with 1 N ammonium acetate (pH 7.0) and were analyzed with an atomic absorption spectrophotometer. On 24 June 1987, below ground biomass was measured at only five ant nests from each of the three sites. A 400 cm3 soil core sample was taken from each quadrat (edges and reference). Roots were cleaned with a 2-mm sieve, oven-dried for 72 hours at 60 C and carefully weighed.

Variables in the dataset include chemical analyses for soil samples collected from five ant nests for each of the three sites for total nitrogen, (ammonium, nitrate), inorganic phosphorus, and exchangeable cations (K+, Na+, Ca2+ and Mg2+). Also included is below ground biomass from five ant nests for each of the three sites.

Additional Files

An additional metadata file - ansnutr.dsd.txt - from the earlier Jornada information management system is included and may contain useful metadata.

People and Organizations

Publishers:

Organization:

Environmental Data Initiative

Email Address:

info@environmentaldatainitiative.org

Web Address:

https://environmentaldatainitiative.org

Id:

https://ror.org/0330j0z60

Creators:

Individual:	Rodolfo Di Marco
Organization:	New Mexico State University

Individual:

Walter G Whitford

Organization:

Jornada Basin LTER/New Mexico State University

Address:

P.O. Box 30003; MSC 3JER New Mexico State University,

Las Cruces, NM 88003-8003 U.S.A.

Contacts:

Organization:

Jornada Basin LTER

Position:

Jornada Basin LTER Information Manager

Address:

P.O. Box 30003, MSC 3JER New Mexico State University,

Las Cruces, NM 88003-8003 USA

Phone:

575-646-1739

Email Address:

jornada.data@nmsu.edu

Web Address:

https://lter.jornada.nmsu.edu/information-management/

Metadata Providers:

Organization:

Jornada Basin LTER

Address:

P.O. Box 30003; MSC 3JER New Mexico State University,

Las Cruces, NM 88003-8003 USA

Web Address:

https://lter.jornada.nmsu.edu

Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to all data in this dataset:

Time Period

Begin:

1987-06-24

End:

1987-06-24

Geographic Region:

Description:

Basin Floor: Study occurred in the basin floor geomorphic zone in the Jornada Basin. More precise geographic coordinates for this study may be requested from the JRN LTER Data Manager (jornada.data@nmsu.edu).

Bounding Coordinates:

Northern:	32.749487	Southern:	32.473173
Western:	-106.872883	Eastern:	-106.692716

Project

Parent Project Information:

Title:

Jornada Basin LTER

Personnel:

Individual:

Dr. Walter Whitford

Address:

P.O. Box 30003, MSC 3JER,

New Mexico State University,

Las Cruces, NM 88003-8003 United States

Phone:

575-646-1739 (voice)

Email Address:

jornada.lter@nmsu.edu

Role:

Principal Investigator

Abstract:

The Jornada Basin Long-Term Ecological Research (LTER) program is part of a national network of long-term ecological research sites funded by the US National Science Foundation (NSF). The Jornada LTER program has been continuously funded since 1982 to develop general principles governing changes between grassland and shrubland ecosystems based on long-term data collected in the Chihuahuan Desert. We translate our findings to dryland ecosystems around the world, and forecast the dynamics of future ecosystem states in response to changing climate and land use.

Funding:

At the time of this study, JRN LTER was funded by the National Science Foundation under award DEB 8114466 (LTER-I).

Maintenance

Maintenance:

Description:	completed
Frequency:	notPlanned

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'abbreviation' = 'g/l'
        |     |     |     |  \___attribute 'id' = 'gramPerLiter'
        |     |     |     |  \___attribute 'multiplierToSI' = '1'
        |     |     |     |  \___attribute 'name' = 'gramPerLiter'
        |     |     |     |  \___attribute 'parentSI' = 'kilogramPerMeterCubed'
        |     |     |     |  \___attribute 'unitType' = 'massDensity'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'grams per liter'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'abbreviation' = 'µE/100g'
        |     |     |     |  \___attribute 'id' = 'microequivalentsPer100g'
        |     |     |     |  \___attribute 'name' = 'microequivalentsPer100g'
        |     |     |     |  \___attribute 'parentSI' = 'molePerMeterCubed'
        |     |     |     |  \___attribute 'unitType' = 'amountOfSubstanceConcentration'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'microequivalents per 100 g solution; concentration of charge (on dissolved ions). conversions must know the name of the ion; a single multiplier to SI is not possible'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'abbreviation' = 'mg/kg'
        |     |     |     |  \___attribute 'id' = 'milligramPerKilogram'
        |     |     |     |  \___attribute 'multiplierToSI' = '0.000001'
        |     |     |     |  \___attribute 'name' = 'milligramPerKilogram'
        |     |     |     |  \___attribute 'parentSI' = 'gramPerGram'
        |     |     |     |  \___attribute 'unitType' = 'massPerMass'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'milligrams per kilogram'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'number'
        |     |     |     |  \___attribute 'name' = 'number'
        |     |     |     |  \___attribute 'unitType' = 'dimensionless'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'a quantity or amount'
        |     |     |     |___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

Soil nutrients sampled in and around ant nests in three harvester ant habitats at the Jornada Basin LTER site, 1987

Data Entities

Data Table

Non-Categorized Data Resource

Data Package Usage Rights

Keywords

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Methods in brief

Additional Files

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Parent Project Information:

Maintenance

Additional Metadata

Recently Added

Recently Updated

Data Package Metadata View Summary

Soil nutrients sampled in and around ant nests in three harvester ant habitats at the Jornada Basin LTER site, 1987

+/- Data Entities

Data Table

Non-Categorized Data Resource

+/- Data Package Usage Rights

+/- Keywords

+/- Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Methods in brief

Additional Files

+/- 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