Data Package Metadata View Summary

Gravimetric soil water content sampled in and around harvester ant nests in three habitats at the Jornada Basin LTER site, 1987

General Information

Data Package:

Local Identifier:

knb-lter-jrn.210368004.38

Title:

Gravimetric soil water content sampled in and around harvester ant nests in three habitats at the Jornada Basin LTER site, 1987

Alternate Identifier:

DOI PLACE HOLDER

Abstract:

This dataset contains gravimetric soil water 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 soils were sampled in three study locations on a monthly schedule from January to May 1987. This dataset contains percent (%) soil water content in these samples determined using the gravimetric method. 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:

1987-01-01

End:

1987-05-31

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 water data
Description:	Gravimetric soil water content (%) 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/210368004/38/9c5e074fb06aadffd98ab33d706e1aa7
Name:	Ant nest soil water data
Description:	Gravimetric soil water content (%) data from soils sampled in or around ant nests in 3 habitats, 1987
Number of Records:	200
Number of Columns:	5

Table Structure

Object Name:

JRN368004_ant_nest_swc_data.csv

Size:

5030 byte

Authentication:

b62bfede2a886d1b058653e86456a3aa 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 date code

Place

Replicate

Treatment

Soil water content

Column Name:

sample_time

place

rep

trt

swc

Definition:

Sample day - julian day in 1987 [1-127]

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]

Gravimetric soil water content (percent by weight)

Storage Type:

integer

string

integer

string

float

Measurement Type:

interval

nominal

interval

nominal

ratio

Measurement Values Domain:

Unit	nominalDay
Type	integer

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	loc1
Definition	burrograss-tobosa swale
Source

Code Definition

Code	loc2
Definition	College Playa fringe
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	percent
Type	real

Missing Value Code:

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:

answc.dsd.txt

Size:

14536 byte

Authentication:

dfe35d8dc33301b69593c2bc7897eb2d Calculated By MD5

Externally Defined Format:

Format Name:

text/plain

Data:

https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210368004/38/392ffff125b26f947b8cfc5727b5b805

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 water content, soils
none	Animal, LTER, ant nests, disturbance, gravimetric method, harvester ants
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.

At approximately monthly dates between January and May 1987, soil samples were collected from five ant nests for each of the three sites. Soil water content from ant nest edge soil and from adjacent reference sites (5 meter apart) was measured gravimetically at monthly intervals during this period. A 35 cubic cm soil core sample was randomly taken at the edge of each ant nest, and another soil core sample of the same volume was taken at the adjacent site (5 m away) for every ant nest to 11 cm depth. Because the surface of ant nests was relatively flat and gravelly, rock particles > 2.0 mm in diameter were removed with a small brush before taking the edge soil samples. The soil core hole was refilled with adjacent soil to avoid creating a disturbance site, and rock or mineral particles were replaced. A subset of these same soil samples was used for soil organic matter content measurements (EDI dataset knb-lter-jrn.210368003).

Data set contains soil water content data measured gravimetrically at monthly intervals from January to May.

Additional Files

An additional metadata file - answc.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:

1987-01-01

End:

1987-05-31

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 'id' = 'nominalDay'
        |     |     |     |  \___attribute 'multiplierToSI' = '86400'
        |     |     |     |  \___attribute 'name' = 'nominalDay'
        |     |     |     |  \___attribute 'parentSI' = 'second'
        |     |     |     |  \___attribute 'unitType' = 'time'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'one day excluding leap seconds, 86400 seconds'
        |     |     |     |___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        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'abbreviation' = '%'
        |     |     |     |  \___attribute 'id' = 'percent'
        |     |     |     |  \___attribute 'multiplierToSI' = '1'
        |     |     |     |  \___attribute 'name' = 'percent'
        |     |     |     |  \___attribute 'parentSI' = 'dimensionless'
        |     |     |     |  \___attribute 'unitType' = 'dimensionless'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'percent, one part per hundred parts. a decimal ratio multipled by 100'
        |     |     |     |___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

Gravimetric soil water content sampled in and around harvester ant nests in three 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

Gravimetric soil water content sampled in and around harvester ant nests in three 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