Data Package Metadata View Summary

Warming-El Nino-Nitrogen Deposition Experiment (WENNDEx): Seasonal Biomass and Seasonal and Annual NPP at the Sevilleta National Wildlife Refuge, New Mexico

General Information

Data Package:

Local Identifier:

knb-lter-sev.205.210630

Title:

Warming-El Nino-Nitrogen Deposition Experiment (WENNDEx): Seasonal Biomass and Seasonal and Annual NPP at the Sevilleta National Wildlife Refuge, New Mexico

Alternate Identifier:

DOI PLACE HOLDER

Abstract:

Begun in winter 2006, this long-term study at the Sevilleta LTER examines how heightened winter precipitation, N addition, and warmer nighttime temperatures affect above-ground biomass production (ANPP) in a mixed desert-grassland. Net primary production is a fundamental ecological variable that quantifies rates of carbon consumption and fixation. Estimates of NPP are important in understanding energy flow at a community level as well as spatial and temporal responses to a range of ecological processes. While measures of both below- and above-ground biomass are important in estimating total NPP, this study focuses on above-ground net primary production (ANPP). Above-ground net primary production is the change in plant biomass, including loss to death and decomposition, over a given period of time. Volumetric measurements are made using vegetation data from permanent plots (SEV176, "Warming-El Nino-Nitrogen Deposition Experiment (WENNDEx): Net Primary Production Quadrat Data") and regressions correlating species biomass and volume constructed using seasonal harvest weights from SEV157, "Net Primary Productivity (NPP) Weight Data."

Publication Date:

2024-03-07

For more information:
Visit:	DOI PLACE HOLDER

Time Period

Begin:

2006-05-16

End:

2023-08-30

People and Organizations
Contact:	Information Manager (University of New Mexico) [ email ]
Creator:	Baur, Lauren (University of New Mexico)
Creator:	Collins, Scott (University of New Mexico)
Creator:	Muldavin, Esteban (University of New Mexico)
Creator:	Rudgers, Jennifer A (University of New Mexico)
Creator:	Pockman, William T. (University of New Mexico)
Associate:	McLellan, Jade (University of New Mexico, Research Scientist I, Field Crew, Data Management)
Associate:	Cafferky, Samantha (University of New Mexico, Data management)
Associate:	Cardenas, Pablo (University of New Mexico, former Field crew lead)
Associate:	McLaughlin, Jade (University of New Mexico, former Field crew)
Associate:	Johnson, Jessica (University of New Mexico, former Field crew)
Associate:	Hallmark, Alesia J (University of New Mexico, Graduate student)
Associate:	Baker, Stephanie R (University of New Mexico, Former field crew)

Data Entities
Data Table Name:	sev205_NPP_warming_biomass.csv
Description:	NPP warming biomass data.

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-sev/205/210630/9c0b9de0500d5e0e34906cc8875803dd
Name:	sev205_NPP_warming_biomass.csv
Description:	NPP warming biomass data.
Number of Records:	15991
Number of Columns:	27

Table Structure

Object Name:

sev205_NPP_warming_biomass.csv

Size:

2749771 byte

Authentication:

182b44a0b215a90bcb146847aa9789ef Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

Column Name:

site

year

season

date

web

transect

block

plot

subplot

quad

treatment

kartez

genus

sp.epithet

family

LifeHistory

PhotoPath

FunctionalGroup

cover

volume

biomass.BM

biomass.BIM

SiteCluster

MetStation

season.precip

GDD

SPEI.comp

Definition:

Site at which data was collected.

The year in which data was collected.

The season in which data was collected.

The date data was collected.

The number of the web for sites that have sampling web designs

The letter code for the transect for sites that have transect designs

The block number for sites that have block designs

The plot number or letter for sites that have plot designs

The subplot character for sites that have subplots

The quadrat number which is nested within each site, plot, block, etc. depending on the design

The treatment applied to a sampled unit.

USDA plant code for the plant species

Genus of the plant

Species name of the plant

Family of the plant

Life history of the plant species

Type of photosynthesis performed by the plant species

Functional group of the plant species

Percent of one square meter covered by a given plant species in a given quad, calculated as the sum of the covers of all individuals of that species in that quad

Total volume of a given species in a given quad, calculated as the sum of the volumes of each individual of that species in that quad (cover times height)

Biomass of a given species in a given quad, calculated using the best overall model

Biomass of a given species in a given quad, calculated using the best climate invariant model

Group of sites geographically near each other

Meteorological station closest to a given site cluster

Seasonal precipitation

Growing degree days

Standardized Precipitation-Evapotranspiration Index

Storage Type:

string

date

string

date

string

float

string

float

Measurement Type:

nominal

dateTime

nominal

dateTime

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

text

Format	YYYY
Precision

Definition

text

Format	YYYY-MM-DD
Precision

Definition

text

Definition

text

Definition

text

Definition

text

Definition

text

Definition

text

Definition

text

Definition

text

Definition

text

Definition

text

Definition

text

Definition

text

Definition

text

Definition

text

Unit	percent
Type	real
Min	0
Max	137.5

Unit	cubicMeter
Type	real
Min	0
Max	3984.5

Unit	gram
Type	real
Min	0
Max	832.896

Unit	gram
Type	real
Min	0
Max	832.896

Definition

text

Definition

text

Unit	millimeter
Type	real
Min	2.254
Max	237.515158652416

Unit	nominalDay
Type	real
Min	1231.097
Max	4496.6495

Unit	dimensionless
Type	real
Min	-1.52720524206365
Max	1.44757833527082

Missing Value Code:

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

Code	NA
Expl	missing

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:
(No thesaurus)	cover
LTER controlled vocabulary	annual net primary production, biodiversity, burning, climate, community patterns, community structure, deserts, disturbance, disturbances, droughts, ecology, ecosystem properties, elevation, fertilization, fertilizer, fires, foliage, forbs, grasses, grasslands, herbs, litter, long term, measurements, net primary productivity, nitrogen deposition, nutrients, organisms, permanent plots, plant communities, plant cover, plant ecology, plant growth, plant species composition, plant species, plants, precipitation, primary production, production, productivity, recovery, seasonality, shrubs, simulation, soil moisture, soil warming, species diversity, species richness, stems, succession, successional dynamics, transects, vegetation dynamics, vegetation, wildfires, communities, forests, species
LTER Controlled Vocabulary	biomass
LTER core research area	primary production

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:

Experimental Design: Our experimental design consists of three fully crossed factors (warming, increased winter precipitation, and N addition) in a completely randomized design, for a total of eight treatment combinations, with five replicates of each treatment combination, for a total of 40 plots. Each plot is 3 x 3.5 m. All plots contain B. eriopoda, B. gracilis and G. sarothrae. Our nighttime warming treatment is imposed using lightweight aluminum fabric shelters (mounted on rollers similar to a window shade) that are drawn across the warming plots each night to trap outgoing longwave radiation. The dataloggers controlling shelter movements are programmed to retract the shelters on nights when wind speeds exceed a threshold value (to prevent damage to shelters) and when rain is detected by a rain gauge or snow is detected by a leaf wetness sensor (to prevent an unintended rainout effect).Each winter we impose an El Nino-like rainfall regime (50% increase over long-term average for non-El Nino years) using an irrigation system and RO water. El Nino rains are added in 6 experimental storm events that mimic actual El Nino winter-storm event size and frequency. From January-March, there are 4x5mm applications, 1x10mm application and 1x20mm application. During El Nino years we use ambient rainfall and do not impose experimental rainfall events. For N deposition, we add 2.0 g m-2 y-1 of N in the form of NH4NO3 because NH4 and NO3 contribute approximately equally to N deposition at SNWR (57% NH4 and 43% NO3; Bez et al., 2007). The NH4NO3 is dissolved in 12 liters of deionized water, equivalent to a 1 mm rainfall event, and applied with a backpack sprayer prior to the summer monsoon. Control plots receive the same amount of deionized water. Warming treatment ended Fall 2023.

Derivation of Biomass and NPP: Data from SEV176 and SEV157 are used to calculate seasonal and annual production of each species in each quadrat for a given year. Allometric equations derived from harvested samples of each species for each season are applied to the measured cover, height, and count of each species in each quadrat. This provides seasonal biomass for spring and fall. Seasonal NPP is derived by subtracting the previous season's biomass from the biomass for the current season. For example, spring NPP is calculated by subtracting the winter weight from the spring weight for each species in a given quadrat. Negative differences are considered to be 0. Likewise, fall production is computed by subtracting spring biomass from fall biomass. Annual biomass is taken as the sum of spring and fall NPP.

August 2009 Burn: On August 4, 2009, a lightning-initiated fire began on the Sevilleta National Wildlife Refuge. By August 5, 2009, the fire had reached the Warming site, which was burned extensively though not entirely. Approximately 50% of plots burned on August 5 and those plots which did not burn were burned within three weeks by US Fish and Wildlife. Thus, the condition of all plots at the Warming site was comparable by early September 2009.

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:

Lauren Baur

Organization:

University of New Mexico

Email Address:

lbaur@unm.edu

Individual:

Scott Collins

Organization:

University of New Mexico

Email Address:

scollins@unm.edu

Id:

https://orcid.org/0000-0002-0193-2892

Individual:

Esteban Muldavin

Organization:

University of New Mexico

Email Address:

muldavin@unm.edu

Individual:

Jennifer A Rudgers

Organization:

University of New Mexico

Email Address:

jrudgers@unm.edu

Id:

https://orcid.org/0000-0001-7094-4857

Individual:

William T. Pockman

Organization:

University of New Mexico

Email Address:

pockman@unm.edu

Id:

https://orcid.org/0000-0002-3286-0457

Contacts:

Organization:

University of New Mexico

Position:

Information Manager

Email Address:

sevim@unm.edu

Associated Parties:

Individual:	Jade McLellan
Organization:	University of New Mexico
Position:	Research Scientist I
Id:	https://orcid.org/0000-0003-3801-7361
Role:	Field Crew, Data Management

Individual:

Samantha Cafferky

Organization:

University of New Mexico

Email Address:

slc14@unm.edu

Role:

Data management

Individual:

Pablo Cardenas

Organization:

University of New Mexico

Email Address:

pancar81@unm.edu

Role:

former Field crew lead

Individual:

Jade McLaughlin

Organization:

University of New Mexico

Email Address:

jmclaugh@unm.edu

Role:

former Field crew

Individual:

Jessica Johnson

Organization:

University of New Mexico

Email Address:

jjohnson6@unm.edu

Role:

former Field crew

Individual:

Alesia J Hallmark

Organization:

University of New Mexico

Email Address:

alesiahallmark@unm.edu

Id:

https://orcid.org/0000-0002-1024-5779

Role:

Graduate student

Individual:

Stephanie R Baker

Organization:

University of New Mexico

Email Address:

srbaker@unm.edu

Role:

Former field crew

Temporal, Geographic and Taxonomic Coverage

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

Time Period

Begin:

2006-05-16

End:

2023-08-30

Sampling Site:

Description:

warming - Description: The night time Warming, El Nino, Nitrogen Deposition Experiment (WENNDEx) was established in 2006 in mixed blue grama-black grama grassland immediately north of the Deep Well met station. ii. Experimental treatments. WENNDEx manipulates three global change factors (nighttime warming, increased winter precipitation, and N addition) in a fully crossed, completely randomized design. WENNDEx has five replicates of each treatment combination for a total of 40 3.0 x 3.5 m plots. All replicates contain both blue and black grama. Nighttime warming is imposed on the full plot using lightweight aluminum fabric blankets that are drawn across each warmed plot at night to trap outgoing longwave radiation. Dataloggers controlling shelter movements retract the blankets when wind speeds exceed a threshold (to prevent damage) and when rain or snow occurs. Based on long-term climate records, El Nino rains increase average winter precipitation in our area by 50%; more frequent El Nino events are predicted by climate models. From 2006 through 2019 we supplemented winter precipitation each year using an irrigation system and reverse osmosis (RO) water. Rain was added in six experimental events each winter (January-March) to mimic actual El Nino winter-storm event size distribution (four 5 mm events, one 10 mm event, and one 20 mm event each winter) and amount (50 mm). Starting in 2020, the El Nino treatments will only be applied in El Nino years to make them more extreme than ambient. Using a backpack sprayer we add 2 g N m-2 y-1 as NH4NO3 prior to the monsoon season because NH4-N (57%) and NO3-N (43%) contribute approximately equally to N deposition at SNWR. Control plots receive the same amount of RO water. iii. Core measurements. ANPP and plant species composition are measured allometrically in two 1-m2 quadrats per plot, twice yearly. We measure temperature in all plots at two soil depths (5 and 10 cm) and 20 cm aboveground with Campbell Scientific CS107 temperature probes. Soil moisture is measured in each plot using Campbell Scientific CS-616 probes buried at a 45o angle to obtain an integrated measure of moisture in the top 15 cm. Moisture and temperature probes take a reading every 15 minutes. Soil N availability is measured during the monsoon (July - Sept) using Plant Root Simulator probes (WesternAg Industries; Drohan et al. 2005) placed in either blue or black grama patches in each plot. Measurement of soil respiration using Vaisala probes started in 2011 in a subset of treatments (control, warmed, winter rain, and warmed plus winter rain), using the same methods as in EDGE, but with sensors under the canopy of either blue or black grama. On August 4, 2009, a lightning-initiated fire began on the Sevilleta National Wildlife Refuge. By August 5, 2009, the fire had reached WENNDEx, which was burned extensively though not entirely. Approximately 50% of plots burned on August 5 and those plots which did not burn were burned within three weeks by US Fish and Wildlife Service. The vegetation of this site is mixed blue grama - black grama grassland Other grasses found at the site include dropseeds (Sporobolus spp.) and threeawns (Aristida spp.). Shrubs are uncommon but those that occur include Yucca glauca, Ephedra torreyi, and four-wing saltbush (Atriplex canescens). Herbaceous plants include Plantago purshii, Hymenopappus filifolius, and globe mallows (Sphaeralcea spp.).

Site Coordinates:

Longitude (degree):

-106.688

Latitude (degree):

34.359

Project

Parent Project Information:

Title:

The University of New Mexico for Long-term Ecological Research

Personnel:

Individual:	Scott Collins
Organization:	University of New Mexico
Id:	https://orcid.org/0000-0002-0193-2892
Role:	Principal Investigator

Individual:

Jennifer Rudgers

Organization:

University of New Mexico

Email Address:

jrudgers@unm.edu

Id:

https://orcid.org/0000-0001-7094-4857

Role:

Principal Investigator

Individual:	Seth Newsome
Organization:	University of New Mexico
Id:	https://orcid.org/0000-0002-4534-1242
Role:	Principal Investigator

Additional Award Information:

Funder:	U.S. National Science Foundation
Title:	DEB-1856383 (LTREB)

Related Project:

Title:

No project title to report

Personnel:

Individual:

Marcy E Litvak

Organization:

University of New Mexico

Email Address:

mlitvak@unm.edu

Id:

https://orcid.org/0000-0002-4255-2263

Role:

Principal Investigator

Funding:

No funding to report

Related Project:

Title:

No project title to report

Personnel:

Individual:

Esteban H Muldavin

Organization:

University of New Mexico

Email Address:

muldavin@unm.edu

Role:

Principal Investigator

Funding:

No funding to report

Related Project:

Title:

Sevilleta LTER IV: Abiotic Pulses and Constraints: Effects on Dynamics and Stability in an Aridland Ecosystem

Personnel:

Individual:

Scott Collins

Organization:

University of New Mexico

Email Address:

scollins@unm.edu

Id:

https://orcid.org/0000-0002-0193-2892

Role:

Principal Investigator

Funding:

NSF 0217774

Related Project:

Title:

LTERV: Pulse dynamics in an aridland ecosystem

Personnel:

Individual:

Scott Collins

Organization:

University of New Mexico

Email Address:

scollins@unm.edu

Id:

https://orcid.org/0000-0002-0193-2892

Role:

Principal Investigator

Funding:

NSF 1232294

Related Project:

Title:

LTER V: Long Term Pulse Dynamics in an Aridland Ecosystem

Personnel:

Individual:

William Pockman

Organization:

University of New Mexico

Email Address:

pockman@unm.edu

Id:

https://orcid.org/0000-0002-3286-0457

Role:

Principal Investigator

Funding:

NSF 1440478

Related Project:

Title:

LTER: Sevilleta (SEV) Site: Climate Variability at Dryland Ecotones

Personnel:

Individual:

Jennifer A Rudgers

Organization:

University of New Mexico

Email Address:

jrudgers@unm.edu

Id:

https://orcid.org/0000-0001-7094-4857

Role:

Principal Investigator

Funding:

NSF 1655499

Related Project:

Title:

EAGER: Collaborative Research: Sevilleta LTER Environmental Variability at Dryland Ecotones

Personnel:

Individual:

Jennifer A Rudgers

Organization:

University of New Mexico

Email Address:

jrudgers@unm.edu

Id:

https://orcid.org/0000-0001-7094-4857

Role:

Principal Investigator

Funding:

NSF 1748133

Maintenance

Maintenance:

Description:	ongoing
Frequency:

Additional Info

Additional Information:

Personnel:

Joshua Cortez April 2021-present, Alfredo Garcia April 2021-present, Saul Kelly Roman September 2020-present, Timothy Ohlert September 2018-present, Melanie Kazenel September 2018-present, Lauren Baur July 2017-present, Cassandra Miller May 2021, Alesia Hallmark August 2020-September 2020, Melissa Bacigalupa May 2018-September 2020, Ayhan Yener September 2020, Jessica Johnson January 2019-September 2020, Samantha Cafferky April 2019-April 2020, Kelly Lizewski September 2019-April 2020, Nicholas Smith May 2019-October 2019, Nick Dolhyj July 2018-March 2019, Jade McLaughlin July 2018-present, Pablo Cardenas May 2017-April 2021, , Emily McCall July 2017-May 2018, Tracy Ridlinghafer July-2017-July 2018, Nathan Gehres 2014-2017, Chandra Tucker April 2014-2017, Megan McClung April 2013-July 2017, Stephanie Baker October 2010-2016, John Mulhouse August 2009-June 2013, Amaris Swann August 25, 2008-January 2013, Maya Kapoor August 9, 2003-January 21, 2005 and April 2010-March 2011, Terri Koontz February 2000-August 2003 and August 2006-August 2010, Yang Xia January 31, 2005-April 2009, Karen Wetherill February 7, 2000-August 2009, Michell Thomey September 3, 2005-August 2008, Jay McLeod January 2006-August 2006, Charity Hall January 31, 2005-January 3, 2006, Tessa Edelen August 15, 2004-August 15, 2005, Seth Munson September 9, 2002-June 2004, Caleb Hickman September 9, 2002-November 15, 2004, Heather Simpson August 2000-August 2002, Chris Roberts September 2001-August 2002, Mike Friggens 1999-September 2001, Shana Penington February 2000-August 2000.

Other Metadata

Additional Metadata

additionalMetadata
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        |___element 'metadata'
        |     |___text '\n         '
        |     |___element 'importedFromXML'
        |     |        \___attribute 'dateImported' = '2024-03-04'
        |     |        \___attribute 'filename' = 'knb-lter-sev.205.210629.xml'
        |     |        \___attribute 'taxonomicCoverageExempt' = 'True'
        |     |___text '\n      '
        |___text '\n   '

Additional Metadata

additionalMetadata
        |___text '\n      '
        |___element 'metadata'
        |     |___text '\n         '
        |     |___element 'emlEditor'
        |     |        \___attribute 'app' = 'ezEML'
        |     |        \___attribute 'release' = '2024.02.21'
        |     |___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

Warming-El Nino-Nitrogen Deposition Experiment (WENNDEx): Seasonal Biomass and Seasonal and Annual NPP at the Sevilleta National Wildlife Refuge, New Mexico

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

Parent Project Information:

Maintenance

Additional Info

Additional Metadata

Additional Metadata

Recently Added

Recently Updated

Data Package Metadata View Summary

Warming-El Nino-Nitrogen Deposition Experiment (WENNDEx): Seasonal Biomass and Seasonal and Annual NPP at the Sevilleta National Wildlife Refuge, New Mexico

+/- 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

Parent Project Information:

+/- Maintenance

+/- Additional Info

+/- Additional Metadata

+/- Additional Metadata

Data Entities

Data Package Usage Rights

Keywords

Methods and Protocols

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Maintenance

Additional Info

Additional Metadata

Additional Metadata