Data Package Metadata View Summary

Biomass removal at the initiation of a biodiversity experiment at the Jornada Basin LTER site in 1995

General Information

Data Package:

Local Identifier:

knb-lter-jrn.210121003.3

Title:

Biomass removal at the initiation of a biodiversity experiment at the Jornada Basin LTER site in 1995

Alternate Identifier:

DOI PLACE HOLDER

Abstract:

This dataset contains data on vegetation biomass removed from treatment plots during the establishment of a biodiversity experiment at the Jornada Basin LTER site in southern New Mexico, USA. In fall of 1995, various combinations of plant functional groups or species were experimentally removed from 25 x 25 meter plots with the objective to distinguish the differential effects of plant community biomass, functional groups, and biodiversity within functional groups on ecosystem and plant community function. Eight different treatments were established with selective removal of species or functional groups: control (C, no removals); four functional group removal treatments (PG, perennial grass removed; S, shrubs removed; SSh, subshrubs removed; Succ, succulents removed), and three species richness manipulation treatments. Richness manipulations included a simplified treatment (Simp), where only the single most abundant species of each growth form is preserved and all other species in the growth form are removed, a reduced‐Larrea treatment (rL), where the Larrea is assumed to be the dominant and is removed while minority components remain, and a reduced-Prosopsis treatment (rP), where Prosopis rather than Larrea is removed as the shrub dominant. The amount of plant material removed during the establishment of these treatments was recorded for later use as covariate or measure of disturbance. Removed fresh material was weighed in the field by species, then converted to dry mass using a subset of removed plot vegetation that was oven-dried and weighed in the lab. Variables in this file summarize the dry mass of plants removed by growth form (functional group, i.e. shrub, subshrub, perennial grass, succulent), and by total live dry mass, for each plot in the biodiversity experiment. Also provided are masses of dead material collected from plots (same groups as live material removed for each treatment) and total dry mass, live plus dead. Species-level data are available upon request. This study is complete.

Short Name:

biodiv_biomass_removal

Publication Date:

2023-09-12

Language:

English

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

Time Period

Begin:

1995

End:

1995

People and Organizations
Contact:	Information Manager (Jornada Basin LTER Program) [ email ]
Creator:	Huenneke, Laura F (Northern Arizona University)
Associate:	Anderson, John (New Mexico State University, Jornada Basin LTER, Jornada Research Site Manager, associate researcher)
Associate:	Gurrola, Javier (New Mexico State University, Jornada Basin LTER, field data collection)
Associate:	McGlone, Christopher (New Mexico State University, Jornada Basin LTER, field data collection)
Associate:	Stiteler, K (New Mexico State University, Jornada Basin LTER, field data collection)

Data Entities
Data Table Name:	Biodiversity initial biomass removal data table
Description:	Biomass removal data, including total and sorted dry masses of removed vegetation, for the initiation of the Jornada Biodiversity experiment.
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/210121003/3/3ed2b61e7d7b7d8ca4fbfea7eb8c1ee5
Name:	Biodiversity initial biomass removal data table
Description:	Biomass removal data, including total and sorted dry masses of removed vegetation, for the initiation of the Jornada Biodiversity experiment.
Number of Records:	48
Number of Columns:	11

Table Structure

Object Name:

jrn121003_biodiv_biomass_removal_init.csv

Size:

2263 byte

Authentication:

67836257e64088dac5d7e7f1660aecbd 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

Site

Treatment

Plot

Shrub

SubShrub

PerennialGrass

Succulent

TotalLive

Dead

TotalMass

Column Name:

date

site

treatment

plot

shrub

ssh

pergr

succ

totlive

dead

total

Definition:

Date plant removal was completed (Fall 1995)

Site (all BIOD for Biodiversity site)

Vegetation biodiversity treatment code [C = control, S= shrub removal, PG = perennial grass removal, SSh = subshrub removal, Succ = succulent removal, Simp = simplified, rL = reduced minus Larrea, rP = reduced minus Prosopis]

Plot number

Dry mass of shrubs removed (g)

Dry mass of subshrubs removed (g)

Dry mass of perenial grasses removed (g)

Dry mass of succulents removed (g)

Dry mass of all growth forms combined (g)

Mass of dead wood of removed species taken from plot (g)

Total mass, live dry mass and dead mass combined (g)

Storage Type:

string

integer

Measurement Type:

nominal

interval

ratio

Measurement Values Domain:

Definition

F95 for Fall 1995

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	BIOD
Definition	Biodiversity study site
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	C
Definition	Control - All species of all growth forms remain
Source

Code Definition

Code	PG
Definition	Perennial grass removal - all perennial grasses removed (Muhlenbergia, Dasychloa, Setaria, etc.)
Source

Code Definition

Code	rL
Definition	Reduced minus Larrea - Dominant of each growth form removed, only subordinates remain; Larrea removed as dominant shrub.
Source

Code Definition

Code	rP
Definition	Reduced minus Prosopis - Dominant of each growth form removed, only subordinates remain; Prosopis removed as dominant shrub
Source

Code Definition

Code	S
Definition	Shrub removal - all shrubs removed (Larrea, Prosopis, Ephedra, etc.)
Source

Code Definition

Code	Simp
Definition	Simplified - Only a single species (the dominant) of each growth form remaining, all subordinate species removed; plot contains only LATR, ZIAC, MUPO, and YUBA as woody or grass perennials.
Source

Code Definition

Code	SSh
Definition	Subshrub removal - all subshrubs removed (Zinnia, Xanthocephalum, etc.)
Source

Code Definition

Code	Succ
Definition	Succulent removal - all leaf and stem succulents removed (Yucca, Opuntia, etc.)
Source

Unit	number
Type	integer

Unit	gram
Type	whole

Unit	gram
Type	whole

Unit	gram
Type	whole

Unit	gram
Type	whole

Unit	gram
Type	whole

Unit	gram
Type	whole

Unit	gram
Type	whole

Missing Value Code:

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:

bdremove.dsd.txt

Size:

14953 byte

Authentication:

fbfb69baf3a6d16a574b17ac3d3ba6c6 Calculated By MD5

Externally Defined Format:

Format Name:

text/plain

Data:

https://pasta-s.lternet.edu/package/data/eml/knb-lter-jrn/210121003/3/392ffff125b26f947b8cfc5727b5b805

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	populations
LTER Controlled Vocabulary v1	aboveground biomass, biodiversity, plant biomass, plant communities, plant ecology, plant functional types
none	long-term experiment, vegetation removal
Jornada Basin LTER dataset keywords	LTER III, completed
Jornada Basin project names	Biodiversity, study 121
Jornada Basin place names	Biodiversity, CDRRC, JER

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:

Overview and study location

This biodiversity study was initiated in 1995 and measurements were conducted from 1997-2002 as part of the Jornada Basin LTER program. The objective of this study was to distinguish the differential effects of plant community biomass, plant community functional groups, and biodiversity within functional groups to a number of plant community responses. To make these distinctions, treatments were established by the selective removal of plant species or of all species of a functional group within a plot.

Given the long lifespans and difficulty of establishment of desert perennials, establishment of desired communities from seed or transplant was impractical. Instead, we established our stands of varying plant diversity by making appropriate removals of species or species groups from replicate plots of a diverse Chihuahuan scrub site. Treatments were established in summer/fall 1995. Plants were removed by simple cutting at the soil surface (no soil disturbance or herbicide). For most species, this was effective; recruits of perennial grasses were removed from the appropriate plots twice per year, and regrowing shrubs were clipped back as needed. After 2 years only one perennial grass and two shrubs required substantial effort for plot maintenance.

The experimental area is a 250 m x 250 m area located on the NMSU Chihuahuan Desert Rangeland Research Center, immediately northeast of the intersection of the Summerford powerline road and the road running along the southern boundary of the Jornada Experimental Range and the CDRRC. The area was gridded into 25 m x 25 m plots; because of some existing environmental gradients (the area slopes to the east, and mesquite abundance varies from north to south) 6 blocks were established and treatments were randomly assigned to plots within blocks. Plot boundaries are marked with rebar in the corners and simple steel wire stretched along boundaries; plots are identified by number and treatment on aluminum tags and on plastic rebar caps in the southwest corner.

Treatments and sampling design

There are eight treatments: a control (C, no removals); four functional group removal treatments (PG, perennial grass removed; S, shrubs removed; SSh, subshrubs removed; Succ, succulents removed), and three treatments where richness within a functional group was manipulated. The latter include the simplified treatment (Simp, where only the single most abundant species of each growth form remains, while all other species of those growth forms are removed), the reduced‐Larrea treatment (rL, where the dominant of each growth form is removed, and minority components remain), and a second form of the reduced treatment (rP, where Prosopis rather than Larrea is removed as the shrub dominant). To summarize:

Growth form removals

Shrub Removal (S) = all shrubs removed (Larrea, Prosopis, Ephedra, etc.)

Subshrub Removal (Ss) = all subshrubs removed (Zinnia, Xanthocephalum, etc.)

Perennial Grass Removal (PG) = all perennial grasses removed (Muhlenbergia, Dasychloa, Setaria, etc.)

Succulent Removal (Succ) = all leaf and stem succulents removed (Yucca, Opuntia, etc.)

Modifications of species richness within growth forms

Simplified (Simp) = Only a single species (the dominant) of each growth form remaining, all subordinate species removed; plot contains only LATR, ZIAC, MUPO, and YUBA as woody or grass perennials.

Reduced minus Larrea (rL) = Dominant of each growth form removed, only subordinates remain; Larrea removed as dominant shrub.

Reduced minus Prosopis (rP) = Dominant of each growth form removed, only subordinates remain; Prosopis removed as dominant shrub

Control (C) = All species of all growth forms remain.

Treatments were established in summer/fall 1995 by randomly assigning all 8 treatments to plots within each of 6 blocks in the experimental area (blocking to allow for spatial heterogeneity in environment and vegetation). There are therefore 6 replicates of each of the 8 treatments in 48 total plots. In removal treatments plants were removed by cutting at the soil surface (no soil disturbance or herbicide application). All vegetation removed during treatment application (Fall 1995) was field weighed and recorded, then converted to dry weights for later use as covariate or measure of disturbance.

Plant removal and dry mass estimation

For any species to be removed from a plot, each individual rooted in the plot (or that portion of an individual entering the plot from outside) was cut at ground level, minimizing soil disturbance where possible. Aboveground portions were weighed in the field (fresh weight) with a dairy scale and entered in field data sheets; conversions of data from English units to g were done in the lab. Plant material for each species from the first 10 plots was brought back to the lab for oven drying (45 degrees C) to constant mass. The ratio of dry mass to fresh mass (dry mass/fresh mass) was calculated and used to convert all other fresh weight measurements to dry mass in grams. When a species was encountered in a later plot, for which there had been no collection and calculation of dry/fresh ratio, we applied the ratio from a species of similar growth form and phenology.

Dead biomass of shrubs and subshrubs removed from a plot was collected and weighed (assumed to be dry so no oven-drying). Dead material that was part of a live plant was not separated from the plant and was included in the live mass weight. Dead material was identified as that lying on the ground or a rooted plant that was completely dead. Dry mass of each species was summed for each plot; then species’ masses were summed by growth form for each plot.

This data set consists of the total dry mass (converted from fresh) by functional group removed from each plot, plus the combined mass of dead, live, and live + dead biomass (total) removed from the plots.

Additional Files

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

REFERENCES

Buonopane, Michelle, Laura Foster Huenneke, and Marta Remmenga. "Community response to removals of plant functional groups and species from a Chihuahuan Desert shrubland." Oikos 110.1 (2005): 67-80.

People and Organizations

Publishers:

Organization:

Environmental Data Initiative

Email Address:

info@edirepository.org

Web Address:

https://edirepository.org

Id:

https://ror.org/0330j0z60

Creators:

Individual:	Laura F Huenneke
Organization:	Northern Arizona University
Id:	https://orcid.org/0000-0002-2562-6822

Contacts:

Organization:

Jornada Basin LTER Program

Position:

Information Manager

Address:

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

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

Phone:

575-322-2430

Email Address:

jornada.data@nmsu.edu

Web Address:

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

Associated Parties:

Individual:

John Anderson

Organization:

New Mexico State University, Jornada Basin LTER

Position:

Jornada Research Site Manager

Email Address:

janderso@jornada.nmsu.edu

Id:

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

Role:

associate researcher

Individual:	Javier Gurrola
Organization:	New Mexico State University, Jornada Basin LTER
Role:	field data collection

Individual:	Christopher McGlone
Organization:	New Mexico State University, Jornada Basin LTER
Role:	field data collection

Individual:	K Stiteler
Organization:	New Mexico State University, Jornada Basin LTER
Role:	field data collection

Metadata Providers:

Organization:

Jornada Basin LTER Program

Position:

Jornada Basin LTER program

Address:

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

Las Cruces, NM 88003-8003 USA

Email Address:

jornada.lter@nmsu.edu

Web Address:

https://lter.jornada.nmsu.edu

Id:

https://ror.org/05976ta47

Temporal, Geographic and Taxonomic Coverage

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

Time Period

Begin:

1995

End:

1995

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

Taxonomic Range:

Classification:

Rank Name:

kingdom

Rank Value:

Plantae

Classification:

Rank Name:

phylum

Classification:

Rank Name:

class

Rank Value:

Magnoliopsida

Classification:

Rank Name:

order

Rank Value:

Fabales

Classification:

Rank Name:

family

Rank Value:

Fabaceae

Classification:

Rank Name:

genus

Rank Value:

Prosopis

Classification:

Rank Name:	specificEpithet
Rank Value:	glandulosa

Classification:

Rank Name:

kingdom

Rank Value:

Plantae

Classification:

Rank Name:

phylum

Classification:

Rank Name:

class

Rank Value:

Magnoliopsida

Classification:

Rank Name:

order

Rank Value:

Zygophyllales

Classification:

Rank Name:

family

Rank Value:

Zygophyllaceae

Classification:

Rank Name:

genus

Rank Value:

Larrea

Classification:

Rank Name:	specificEpithet
Rank Value:	tridentata

Classification:

Rank Name:

kingdom

Rank Value:

Plantae

Classification:

Rank Name:

phylum

Classification:

Rank Name:

class

Rank Value:

Magnoliopsida

Classification:

Rank Name:

order

Rank Value:

Poales

Classification:

Rank Name:

family

Rank Value:

Poaceae

Classification:

Rank Name:

genus

Rank Value:

Bouteloua

Classification:

Rank Name:	specificEpithet
Rank Value:	eriopoda

Project

Parent Project Information:

Title:

Jornada Basin LTER

Personnel:

Individual:

Dr. Niall Hanan

Address:

P.O. Box 30003, MSC 3JER,

New Mexico State University,

Las Cruces, NM 88003-8003 United States

Phone:

575-646-3335 (voice)

Email Address:

nhanan@nmsu.edu

Role:

Principal Investigator

Abstract:

Dryland ecosystems occupy nearly half of the Earth's land surface and provide goods and services for more than 1 billion people. The goal of the Jornada Basin Long Term Ecological Research (LTER) program is to understand what factors determine the structure and function of drylands, and to develop general principles governing changes between grassland and shrubland ecosystems. This research is 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:

The Jornada LTER program has been continuously funded by the U.S. National Science Foundation since 1982 (Current NSF award: DEB-2025166)

Additional Award Information:

Funder:

National Science Foundation

Funder ID:

https://ror.org/021nxhr62

Number:

DEB 2025166

Title:

LTER: Long –Term Research at the Jornada Basin (LTER VII)

URL:

https://www.nsf.gov/awardsearch/showAward?AWD_ID=2025166

Additional Award Information:

Funder:	National Science Foundation
Number:	DEB 1832194
Title:	Prior award: LTER: Long - Term Research at the Jornada Basin (LTER VII)
URL:	https://www.nsf.gov/awardsearch/showAward?AWD_ID=1832194

Additional Award Information:

Funder:	National Science Foundation
Number:	DEB 1235828
Title:	Prior award: LTER: Long-Term Research at the Jornada Basin (LTER-VI)
URL:	https://www.nsf.gov/awardsearch/showAward?AWD_ID=1235828

Additional Award Information:

Funder:	National Science Foundation
Number:	DEB 0618210
Title:	Prior award: Jornada Basin LTER V: Landscape Linkages in Arid and Semiarid Ecosystems
URL:	https://www.nsf.gov/awardsearch/showAward?AWD_ID=0618210

Additional Award Information:

Funder:	National Science Foundation
Number:	DEB 0080412
Title:	Prior award: LTER IV: Jornada Basin: Linkages in Semi-arid Landscapes
URL:	https://www.nsf.gov/awardsearch/showAward?AWD_ID=0080412

Additional Award Information:

Funder:	National Science Foundation
Number:	DEB 9411971
Title:	Prior award: LTER: The Chihuahuan Desert (The Jornada LTER III Consortium)
URL:	https://www.nsf.gov/awardsearch/showAward?AWD_ID=9411971

Additional Award Information:

Funder:	National Science Foundation
Number:	DEB 8811160, 9240261
Title:	Prior award: Interactions in Time and Space Variability in a Chihuahuan Desert Ecosystem: Jornada LTER (II)

Additional Award Information:

Funder:	National Science Foundation
Number:	DEB 8114466, 8612106
Title:	Prior award: Interactions of Time and Space Variability in a Chihuahuan Desert Ecosystem in New Mexico (Jornada LTER I)

Maintenance

Maintenance:

Description:	complete
Frequency:	asNeeded

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  '

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

Biomass removal at the initiation of a biodiversity experiment at the Jornada Basin LTER site in 1995

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:

Overview and study location

Treatments and sampling design

Plant removal and dry mass estimation

Additional Files

REFERENCES

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 removal at the initiation of a biodiversity experiment at the Jornada Basin LTER site in 1995

+/- 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:

Overview and study location

Treatments and sampling design

Plant removal and dry mass estimation

Additional Files

REFERENCES

+/- 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