Data Package Metadata View Summary

Soil carbon, soil nitrogen, and geometry of 30 playas and their catchment areas at the Jornada Basin LTER site in 2012

General Information

Data Package:
Local Identifier:	knb-lter-jrn.210420001.4
Title:	Soil carbon, soil nitrogen, and geometry of 30 playas and their catchment areas at the Jornada Basin LTER site in 2012
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	This data package contains soil carbon and nitrogen data at a range of soil depths from 30 ephemerally-flooded desert wetlands, or playas, in the Jornada Basin of southern New Mexico, USA. We conducted this study to assess how catchment biophysical variables control soil organic carbon and nitrogen in playas and how playas function differently than upland ecosystems. We chose 30 playas from across this Chihuahuan Desert Basin and collected 36 soil samples from four depths and nine locations. Soil cores samples were taken along two perpendicular transect lines to account for a topographic gradient from the edge of the playa to the center of the playa. At each of the nine locations, one sample was collected at four depths (0–10 cm, 10–30 cm, 30–60 cm, 60–100 cm). We measured soil organic carbon and total nitrogen concentrations in these soils using elemental combustion analysis. Using bulk density measurements for each depth range (m), we converted each soil measurement (g/g) to calculate concentrations of organic carbon and nitrogen per unit area (g/m^2) within the depth-ranges sampled. Data on the geometry of the playas and their associated catchments is also provided. This study is complete. For further information, refer to: McKenna, Owen P., and Osvaldo E. Sala. "Biophysical controls over concentration and depth distribution of soil organic carbon and nitrogen in desert playas." Journal of Geophysical Research: Biogeosciences 121, no. 12 (2016): 3019-3029.
Publication Date:	2020-04-23

Time Period

Begin:

2012-06-20

End:

2012-07-18

People and Organizations
Contact:	Manager, Data [ email ]
Creator:	McKenna, Owen (Arizona State University)
Creator:	Sala, Osvaldo (Arizona State University)

Data Entities
Data Table Name:	Soil C and N data from soil samples at 30 playas
Description:	Soil C and N data from soil samples at 30 playas
Data Table Name:	Geometry (area, perimeter) of 30 playas and their catchments
Description:	Geometry (area, perimeter) of 30 playas and their catchments
Data Table Name:	Geographic coordinates of all cores in the 30 playas
Description:	Geographic coordinates of all cores in the 30 playas

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210420001/4/ec1a4931044434ce120bdfbfe59a915f
Name:	Soil C and N data from soil samples at 30 playas
Description:	Soil C and N data from soil samples at 30 playas
Number of Records:	1080
Number of Columns:	7

Table Structure

Object Name:

JRN_420001_playaCN.csv

Size:

73891 bytes

Authentication:

6a272255203a2a329d8b86b1e7fc8e88 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:

Table Column Descriptions

Column Name:

playa_ID

core

depth

sample_date

soil_Total_N

soil_Organic_C

bulk_density

Definition:

Playa number [1-30]

Sample number [core 1-9]

Depth number [1-4, referring to 0-10, 10-30, 30-60, and 60-100cm depths]

Date sampled

Total soil Nitrogen (g/m2)

Total soil Carbon (g/m2)

Soil bulk density (g/m3)

Storage Type:

float

string

date

float

Measurement Type:

ratio

nominal

dateTime

ratio

Measurement Values Domain:

Unit	number
Type	natural
Min	1
Max	30

Unit	number
Type	natural
Min	1
Max	9

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	1
Definition	0-10 cm
Source

Code Definition

Code	2
Definition	10-30 cm
Source

Code Definition

Code	3
Definition	30-60 cm
Source

Code Definition

Code	4
Definition	60-100 cm
Source

Format	YYYY-MM-DD
Precision

Unit	gramsPerSquareMeter
Type	real
Min	4.53
Max	551.51

Unit	gramsPerSquareMeter
Type	real
Min	30.96
Max	5661.56

Unit	gramsPerCubicCentimeter
Type	real
Min	0.88
Max	1.91

Missing Value Code:

Code	NA
Expl	Missing value

Code	NA
Expl	Missing value

Code	NA
Expl	Missing value

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210420001/4/9c8fd48327c8598e97be7fbce6f7d804
Name:	Geometry (area, perimeter) of 30 playas and their catchments
Description:	Geometry (area, perimeter) of 30 playas and their catchments
Number of Records:	30
Number of Columns:	4

Table Structure

Object Name:

JRN_420001_playaGeometry.csv

Size:

639 bytes

Authentication:

4a671eda67e5d99f5ceb8288bcd0b461 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:

Table Column Descriptions

Column Name:

Playa_and_Catchment

Playa_Area_m2

Playa_perimeter_m

Catchment_Area_ha

Definition:

Playa/Catchment ID [1-30]

Area of playa (m2)

Perimeter length of playa (m)

Area of catchment for playa (ha)

Storage Type:

float

Measurement Type:

ratio

Measurement Values Domain:

Unit	number
Type	natural
Min	1
Max	30

Unit	squareMeter
Type	natural
Min	817
Max	693279

Unit	meter
Type	natural
Min	110
Max	3261

Unit	hectare
Type	real
Min	13.7
Max	11658.42

Missing Value Code:

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210420001/4/06595c953e54c3d12ce7eb3ad4bba509
Name:	Geographic coordinates of all cores in the 30 playas
Description:	Geographic coordinates of all cores in the 30 playas
Number of Records:	270
Number of Columns:	4

Table Structure

Object Name:

JRN_420001_coreLocations.csv

Size:

6650 bytes

Authentication:

8015d82d18383eef4af26f89bbdb1925 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:

Table Column Descriptions

Column Name:

playa_ID

core

Latitude

Longitude

Definition:

Playa number [1-30]

Sample number [soil core 1-9]

Latitude of core (decimal degrees)

Longitude of core (decimal degrees)

Storage Type:

float

Measurement Type:

ratio

Measurement Values Domain:

Unit	number
Type	natural
Min	1
Max	30

Unit	number
Type	natural
Min	1
Max	9

Unit	degree
Type	real
Min	32.45
Max	32.71

Unit	degree
Type	real
Min	-106.91
Max	-106.68

Missing Value Code:

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:
LTER Core Area	Inorganic Nutrients, Organic Matter
JRN Dataset Keywords	Hydrology
Jornada Place Names	Playas
LTER Controlled Vocabulary	playa, deserts, lakes, nitrogen, carbon, organic carbon, total organic carbon, soil organic matter, soil nitrogen, total nitrogen, sediments, watersheds, hydrology, basins, soil
(No thesaurus)	dryland, catchments

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:

Playa selection and characterization

We consulted the Jornada Basin landform map and available aerial imagery to choose 30 out of 99 potential playas that encompassed a broad range of sizes, catchment characteristics, and proximities to different geological features. The perimeter of each playa was ground-truthed using a Trimble Geo 7X handheld GPS (Trimble Navigation Limited, Sunnyvale, CA).

Sampling and laboratory analyses

In each study playa, we collected 36 soil samples of 100 g each using a 70 mm diameter one‐piece hand auger (Forestry Suppliers Inc., Jackson, MS). The soil samples were collected from nine locations along two perpendicular transect lines to account for a topographic gradient from the edge of the playa to the center of the playa. At each of the nine locations, one sample was collected at four depths (0–10 cm, 10–30 cm, 30–60 cm, 60–100 cm). Each soil sample was dried at 105°C for 24 h, homogenized, sieved through 2 mm mesh screen, and frozen before analysis.

We measured soil organic carbon and total nitrogen concentrations using elemental combustion analysis. We first ground homogenized soil subsamples using a ball mill. We then prepared 45 mg of ground soil samples in silver tins. We acid fumigated the soils to eradicate inorganic. Lastly, we sealed each fumigated sample and combusted them to estimate organic carbon (g C/g soil) and total nitrogen (g N/g soil) in each soil sample using an ECS 4010 elemental analyzer (Costech Analytical Technologies, Valencia, CA, USA). We also estimated soil bulk density (g/m^3) from three locations at each sample depth for all 30 playas using the core volume sampling method. Using bulk density measurements for each depth range (m), we converted each soil measurement (g/g) to calculate concentrations of organic carbon and nitrogen per unit area (g/m^2).

Full details on methods and associated analyses are available in the publication by McKenna and Sala (2016).

Related data packages

knb-lter-jrn.210420002 - Chloride ion concentration in a subset of these playas used to calculate groundwater recharge rate.

There are also some upland soil datasets in the paper associated with this dataset (below) that are available on request from the JRN data manager (datamanager.jrn.lter@gmail.com).

References

McKenna, Owen P., and Osvaldo E. Sala. "Biophysical controls over concentration and de pth distribution of soil organic carbon and nitrogen in desert playas." Journal of Geophysical Research: Biogeosciences 121, no. 12 (2016): 3019-3029.

People and Organizations

Creators:

Individual:	Owen McKenna
Organization:	Arizona State University
Id:	https://orcid.org/0000-0002-5937-9436

Individual:	Osvaldo Sala
Organization:	Arizona State University
Id:	https://orcid.org/0000-0003-0142-9450

Contacts:

Individual:

Data Manager

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:

2012-06-20

End:

2012-07-18

Geographic Region:

Description:

Playas in this study are distributed across the Jornada Basin, southern New Mexico, USA

Bounding Coordinates:

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

Project

Parent Project Information:

Title:

Jornada Basin LTER

Personnel:

Individual:	Osvaldo Sala
Organization:	Arizona State University
Id:	https://orcid.org/0000-0003-0142-9450
Role:	Principal Investigator

Funding:

NSF: DEB-1235828

Maintenance

Maintenance:

Description:	completed
Frequency:

Other Metadata

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.

EDI is a collaboration between the University of New Mexico and the University of Wisconsin – Madison, Center for Limnology:

Data Package Metadata View Summary

Soil carbon, soil nitrogen, and geometry of 30 playas and their catchment areas at the Jornada Basin LTER site in 2012

Data Entities

Data Table

Data Table

Data Table

Data Package Usage Rights

Keywords

Methods and Protocols

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

Playa selection and characterization

Sampling and laboratory analyses

Related data packages

References

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Parent Project Information:

Maintenance

Recently Added

Recently Updated

Data Package Metadata View Summary

Soil carbon, soil nitrogen, and geometry of 30 playas and their catchment areas at the Jornada Basin LTER site in 2012

+/- Data Entities

Data Table

Data Table

Data Table

+/- Data Package Usage Rights

+/- Keywords

+/- Methods and Protocols

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

Playa selection and characterization

Sampling and laboratory analyses

Related data packages

References

+/- People and Organizations

+/- Temporal, Geographic and Taxonomic Coverage

+/- Project

Parent Project Information:

+/- Maintenance

Data Entities

Data Package Usage Rights

Keywords

Methods and Protocols

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Maintenance