Data Package Metadata View Summary

Biomass of harvested annual and perrenial forbs and grasses along fertilized and unfertilized ecosystem transects at the Jornada Basin LTER site in 1989

General Information

Data Package:

Local Identifier:

knb-lter-jrn.210015001.61

Title:

Biomass of harvested annual and perrenial forbs and grasses along fertilized and unfertilized ecosystem transects at the Jornada Basin LTER site in 1989

Alternate Identifier:

DOI PLACE HOLDER

Abstract:

This data package contains biomass data for annual or perennial grasses and forbs harvested from quadrats along the Jornada Basin LTER (LTER-I) transects in southern New Mexico, USA. These transects are located in a livestock exclosure established in 1982 in the Chihuahuan Desert Rangeland Research Center (CDRRC) and run from the middle of the College Playa up to the foot of Mt. Summerford (2.7 km in length). Prior to the exclosure, the study site was moderately to heavily grazed for the past 100 years. The Treatment transect was treated annually with ammonium nitrate fertilizer (NH4NO3 at 10g N/m2/yr) until 1987. Along each transect, 91 stations, each with a plant intercept line, are spaced at 30 meter intervals. Each plant intercept line is perpendicular to the transect and is 30 meters in length broken into 5-meter segments. The included dataset includes biomass data for grasses and forbs clipped from 1 square meter quadrats directly downslope from some, but not all, of these segments. The harvest measurements occurred in September 1989. Data consists of the date, transect, station number, quad, JRN and USDA Plants species codes, species binomial, habit, form, and biomass. This study is complete.

Publication Date:

2021-12-08

Language:

English

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

Time Period

Begin:

1989-09-15

End:

1989-09-20

People and Organizations
Contact:	Jornada Basin LTER Information Manager (Jornada Basin LTER) [ email ]
Creator:	Whitford, Walter G (Jornada Basin LTER/New Mexico State University)
Associate:	Anderson, John (Jornada Basin LTER/New Mexico State University, associate)

Data Entities
Data Table Name:	LTER Transect harvest biomass, 1989
Description:	Add description
Other Name:	JRN DSD file (Dataset Documentation)
Description:	Early format Jornada dataset documentation metadata file

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210015001/61/3470df96ff18451e992da8a9efeef9a2
Name:	LTER Transect harvest biomass, 1989
Description:	Add description
Number of Records:	687
Number of Columns:	11

Table Structure

Object Name:

JRN015001_biomass_transect_data.csv

Size:

42941 byte

Authentication:

b0f3d271c2aa5448c2097dc1bc4f1e9e 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

Date

Transect treatment

Station

Quadrat

JRN species code

USDA Kartesz code

Binomial name

Habit

Form

Vegetation dry weight

Quality flag

Column Name:

date

transect

station

quad

spp_old

USDA_code

Species_binomial

habit

form

weight_dry

q_flag

Definition:

Date of collection

Transect treatment [T=Treatment/Fertilized; C=control (would be alternate control)]

Station number (1-91)

Quadrat number [1-6]

Species code from the old JRN system (out of date)

Species code from USDA Plants database (plants.usda.gov)

Plant genus and species name

Habit of plant (A, P, B)

Growth form of plant (FERN, FORB, GRASS, S-SHR, ST-SU, LF-SU, SHRUB, or VINE)

Dry weight of vegetation (g)

Quality flag for dry weight (E=estimated value (>0 and < 0.05); G=good value; M=missing value)

Storage Type:

date

string

integer

string

float

string

Measurement Type:

dateTime

nominal

interval

nominal

ratio

nominal

Measurement Values Domain:

Format	YYYY-MM-DD
Precision	1

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	C
Definition	Control - LTER transect
Source

Code Definition

Code	T
Definition	Fert Treatment - LTER transect
Source

Unit	number
Type	integer

Unit	number
Type	integer

Definition

any text

Definition

any text

Definition

Genus and species

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	A
Definition	Annual
Source

Code Definition

Code	B
Definition	Biennial
Source

Code Definition

Code	P
Definition	Perennial
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	FORB
Definition	Forb or broad-leaved herb form
Source

Code Definition

Code	GRASS
Definition	Grass or graminoid form
Source

Code Definition

Code	S-SHR
Definition	Sub-shrub form
Source

Code Definition

Code	VINE
Definition	Vine form
Source

Unit	gram
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	E
Definition	Estimated value (>0 and <0.05)
Source

Code Definition

Code	G
Definition	Good value
Source

Code Definition

Code	M
Definition	Missing value flag
Source

Missing Value Code:

Code	NA
Expl	Not applicable or unknown

Code	NA
Expl	Not applicable or unknown

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 dataset documentation metadata file

Physical Structure Description:

Object Name:

tranbiom.dsd.txt

Size:

15418 byte

Authentication:

d3dd2162a00a2fc142c922d80996b1cf Calculated By MD5

Externally Defined Format:

Format Name:

text/plain

Data:

https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210015001/61/392ffff125b26f947b8cfc5727b5b805

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	Land Use and Land Cover Change, Primary Production
LTER Controlled Vocabulary v1	LTER, aboveground biomass, deserts, fertilization, forbs, grasses, land cover, land use history, long term, plant biomass, plant communities, plant species, plant species composition, playa, species diversity, species list, transects, vegetation dynamics
none	LTER
Jornada Basin LTER dataset keywords	LTER I, completed
Jornada Basin project names	LTER-I Transect, study 015
Jornada Basin place names	CDRRC, LTER-I Transect

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:

History and experimental design

Starting in 1982, a 135 ha portion of a 1500 ha, internally drained, moderately-to-highly grazed watershed was exclosed from grazing by domestic livestock. Within this exclosure, three permanent, parallel transects (2.7 km in length) were established by the Jornada Basin LTER, extending from the middle of the College Playa up into the foot of Mt. Summerford at the Chihuahuan Desert Rangeland Research Center (CDRRC) in the Jornada Basin. The study site has a history of moderate to heavy livestock grazing for 100 years before 1982. The Control transect (C) is located on the west, the Treatment transect (T) is on the east side of the Control transect, and the Alternate Control (X) is to the east of the Treatment transect. The three transects pass through several soil and vegetation zones as they ascend from playa to mountain. Each transect is 30 meters wide with a 45-meter buffer zone between each transect. The Treatment transect was treated annually with NH4NO3 in a concentration equal to 10g N/m2 until 1987. On 17 July 1986 the Control Transect was aerially fertilized by mistake with granular NH4NO3 instead of the Treatment Transect. As a result of this mistake, the Alternate Control Transect was established prior to the fall measurements of 1986 and the Treatment Transect was subsequently fertilized by hand with a team of 12 persons using mechanical spreaders.

To measure the effects of nitrogen fertilizer on plant communities, plant intercept lines were established perpendicular to the permanent, 2.7 km transects. There are 91 station markers arranged at 30 meter intervals along each permanent transect, and each has a plant intercept line that extends 15 meters on either side of the transect. The plant intercept lines are thus perpendicular to the direction of major drainage flow. The ends of each 30m plant intercept line are marked by short rebars sticking up about 6 inches aboveground, and each is divided into six 5 meter long segments.

Quadrat biomass harvest measurements

Biomass of annual and perennial forbs and grasses was obtained from a one meter quad selected at random just downslope from each of the 6 5-meter segments of the 30 meter plant line intercepts located perpendicular to the transect station marker. For these biomass measurements, data was recorded by identifying Station number (station i.d. tag is riveted onto each angle iron station marker) and Segment number corresponding to those of the 30 meter plant line intercept running perpendicular to the main transect and station marker. The 5-meter segments are numbered 1 through 6 beginning at the west end of the line (right end if facing upslope). Biomass quads were located just downslope of the line intercept segments. One 1-meter section of the 5-meter segment was selected randomly for the 1-meter quadrat. Annual and perennial forbs and grasses were selected for biomass removals.

Data consists of the date, transect, station number, quad number, JRN and USDA Plants species codes, species binomial, habit, form, and dry weight of the biomass collected.

Additional files

An additional metadata file - tranbiom.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:

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/

Associated Parties:

Individual:

John Anderson

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.

Email Address:

janderso@jornada.nmsu.edu

Id:

https://orcid.org/0000-0002-6417-8022

Role:

associate

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:

1989-09-15

End:

1989-09-20

Geographic Region:

Description:

Western Bajada: Study occurred in the western bajada 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:	32.542771	Southern:	32.467228
Western:	-106.851460	Eastern:	-106.729443

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'
        |     |     |     |  \___attribute 'id' = 'gram'
        |     |     |     |  \___attribute 'multiplierToSI' = '0.001'
        |     |     |     |  \___attribute 'name' = 'gram'
        |     |     |     |  \___attribute 'parentSI' = 'kilogram'
        |     |     |     |  \___attribute 'unitType' = 'mass'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text '0.001 kg'
        |     |     |     |___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  '

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Data Package Metadata View Summary

Biomass of harvested annual and perrenial forbs and grasses along fertilized and unfertilized ecosystem transects at the Jornada Basin LTER site in 1989

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:

History and experimental design

Quadrat biomass harvest measurements

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

Biomass of harvested annual and perrenial forbs and grasses along fertilized and unfertilized ecosystem transects at the Jornada Basin LTER site in 1989

+/- 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:

History and experimental design

Quadrat biomass harvest measurements

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