Data Package Metadata View Summary

Variability in Soil Properties Associated with Harvester Ant Nests on the Jornada Basin, 1987

General Information

Data Package:
Local Identifier:	knb-lter-jrn.210368002.30
Title:	Variability in Soil Properties Associated with Harvester Ant Nests on the Jornada Basin, 1987
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	The effects of harvester ant (Pogonomyrmex rugosus) nests on on soil characteristics were measured at three locations characterized by different soils and dominant vegetation on a desert watershed. Data set contains 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.There were few differences in soils associated with harvester ant nests at locations at the base of the watershed where brief periods of flooding and sediment deposition occur at periodic intervals. At mid-slope locations, there were significant increases in total nitrogen, inorganic phosphorus, of four species of spring annuals at the edges of nest disks when compared with reference sites. At a clay-loam, Scleropogon-Hilaria, grassland site, there were significant reductions in the concentrations of Ca 2+ and Mg 2+, and significant increases in nitrate and total nitrogen. The data demonstrate that the effects of ants on soil properties and vegetation vary with site location and soil type. This sampling is complete. Please refer to the following article for more information: Whitfort, Walter G. and Rudolfo DiMarco. 1995. Variability in soils and vegetation associated with harvester ant nests on a Chihuahuan Desert watershed. Biol Fertil Soils 20: 169-173.
Publication Date:	2019-07-08

Time Period

Begin:

1987-06-24

End:

1987-06-24

People and Organizations
Contact:	Manager, Data [ email ]
Creator:	Di Marco, Rodolfo
Associate:	Jornada Basin LTER

Data Entities
Data Table Name:	Variability in Soil Properties with Harvester Ant Nests
Description:	Variability in Soil Properties with Harvester Ant Nests

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210368002/30/6be673599aa4ece50833d0cf70d598ec
Name:	Variability in Soil Properties with Harvester Ant Nests
Description:	Variability in Soil Properties with Harvester Ant Nests
Number of Records:	60
Number of Columns:	14

Table Structure

Object Name:

JRN_368002_ant_nest_soil_nutrient_data.csv

Size:

3608 bytes

Authentication:

b8e64c79daab9f8e2fd2513019f044bc Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:

Table Column Descriptions

Column Name:

SAMPLE

PLACE

REP

TRT

Sodium

NO3

NH4

BIOMASS

Definition:

Replicate sample analysis number (1 or 2)

number (1,2)

Sample replicate 1-8 when PLACE=1 1-5 when PLACE=2 1-7 when PLACE=3

Treatment

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 - NH4-N (mg/kg soil)

Phosphorus (mg/kg soil)

Potassium in Phosphate - PO4-P (mg/kg soil)

Total nitrogen (mg/kg soil)

Below ground biomass (g/1000cm3)

Storage Type:

string

float

Measurement Type:

nominal

ratio

Measurement Values Domain:

Definition

Replicate sample analysis number (1 or 2)

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	1
Definition	burrograss-tobosa-swale
Source

Code Definition

Code	2
Definition	college playa fringe
Source

Code Definition

Code	3
Definition	upper basin slope mixed grasses
Source

Definition

Sample replicate 1-8 when PLACE=1 1-5 when PLACE=2 1-7 when PLACE=3

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	1
Definition	ant nest perimeter
Source

Code Definition

Code	2
Definition	reference site
Source

Unit	millequivalentper100grams
Type	real
Min	0.01
Max	0.08

Unit	millequivalentper100grams
Type	real
Min	0.68
Max	2.43

Unit	millequivalentper100grams
Type	real
Min	5.12
Max	26.33

Unit	millequivalentper100grams
Type	real
Min	1.34
Max	3.71

Unit	milligramsperkilograms
Type	real
Min	0.35
Max	14.56

Unit	milligramsperkilograms
Type	real
Min	0.22
Max	3.17

Unit	milligramsperkilograms
Type	real
Min	1.74
Max	38.43

Unit	milligramsperkilograms
Type	real
Min	0.18
Max	3.89

Unit	milligramsperkilograms
Type	natural
Min	278
Max	1062

Unit	gramsper1000centimeterscubed
Type	real
Min	0.09
Max	1.88

Missing Value Code:

Code	NULL
Expl	missing value

Code	NULL
Expl	missing value

Code	NULL
Expl	missing value

Code	NULL
Expl	missing value

Code	NULL
Expl	missing value

Code	NULL
Expl	missing value

Code	NULL
Expl	missing value

Code	NULL
Expl	missing value

Code	NULL
Expl	missing value

Code	NULL
Expl	missing value

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	Disturbance, Inorganic Nutrients
JRN Dataset Keywords	Climate, Soils, and Atmosphere, Plant-Animal Interactions, non-core
keywords	climate, annual plants, ants, soil nutrients, completed

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:

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 & 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.

People and Organizations

Creators:

Individual:

Rodolfo Di Marco

Contacts:

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:

1987-06-24

End:

1987-06-24

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:	32.488	Southern:	32.669
Western:	-106.865	Eastern:	-106.713

Project

Maintenance

Maintenance:

Description:	Sampling occurred once in 1987. This sampling is complete
Frequency:

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'millequivalentper100grams'
        |     |     |     |  \___attribute 'multiplierToSI' = '1'
        |     |     |     |  \___attribute 'name' = 'millequivalentper100grams'
        |     |     |     |  \___attribute 'parentSI' = 'equivalent'
        |     |     |     |  \___attribute 'unitType' = 'equivalent'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'milligramsperkilograms'
        |     |     |     |  \___attribute 'multiplierToSI' = '1'
        |     |     |     |  \___attribute 'name' = 'milligramsperkilograms'
        |     |     |     |  \___attribute 'parentSI' = 'milligrams'
        |     |     |     |  \___attribute 'unitType' = 'mass'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'gramsper1000centimeterscubed'
        |     |     |     |  \___attribute 'multiplierToSI' = '1'
        |     |     |     |  \___attribute 'name' = 'gramsper1000centimeterscubed'
        |     |     |     |  \___attribute 'parentSI' = 'grams'
        |     |     |     |  \___attribute 'unitType' = 'mass'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |___text '\n        '
        |     |     |___text '\n      '
        |     |___text '\n    '
        |___text '\n  '

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Data Package Metadata View Summary

Variability in Soil Properties Associated with Harvester Ant Nests on the Jornada Basin, 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

Variability in Soil Properties Associated with Harvester Ant Nests on the Jornada Basin, 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