Summary Information
Point-Quarter Harvested Plant Weight Measurements to Estimate Shrub ANPP in a Chihuahuan Desert Creosote Shrubland at the Sevilleta National Wildlife Refuge, New Mexico (2007- present)
Creator: Individual: Esteban Muldavin Organization: SEV LTER Physical Address: Delivery Address: New Mexico Natural Heritage Program, Biology Department Castetter Hall 167, University of New Mexico City: Albuquerque Locality: NM Postal Code: 87131 Email: muldavin@sevilleta.unm.edu System ID: 9896
Creator: Individual: Douglas I. Moore Organization: SEV LTER Physical Address: Delivery Address: Sevilleta LTER, 167 Castetter Hall, University of New Mexico City: Albuquerque Locality: NM Postal Code: 87131 Email: dmoore@sevilleta.unm.edu System ID: 9661
Associated Party: Individual: Chandra Tucker Organization: SEV LTER Email: ctucker@sevilleta.unm.edu Role: data manager
Associated Party: Individual: Stephanie Baker Organization: SEV LTER Phone: (505) 277-8119 Email: srbaker@sevilleta.unm.edu Role: field crew
Associated Party: Individual: Megan McClung Organization: SEV LTER Physical Address: Delivery Address: 1 University of New Mexico, 167 Castetter Hall, MSC03 2020 City: Albuquerque Locality: NM Postal Code: 87131 Phone: United States Email: mmcclung@sevilleta.unm.edu Role: field crew
Associated Party: Individual: Chandra Tucker Organization: SEV LTER Email: ctucker@sevilleta.unm.edu Role: field crew
Associated Party: Individual: Stephanie Baker Organization: SEV LTER Phone: (505) 277-8119 Email: srbaker@sevilleta.unm.edu Role: labcrew
Associated Party: Individual: Megan McClung Organization: SEV LTER Physical Address: Delivery Address: 1 University of New Mexico, 167 Castetter Hall, MSC03 2020 City: Albuquerque Locality: NM Postal Code: 87131 Phone: United States Email: mmcclung@sevilleta.unm.edu Role: labcrew
Associated Party: Individual: Chandra Tucker Organization: SEV LTER Email: ctucker@sevilleta.unm.edu Role: labcrew
Publication Date:	2015
Language:	english
Abstract: In an effort to better quantify NPP of Creosotebush in the Five-Points region, it was decided to test the Point-Quarter method against the standard 1-m2 quadrat method that has been in use since 1998. Transects were laid out across the 5 mammal trapping webs as well as across burned and unburned plots of the Mixed Shrub site (MS). Repeat measures of the same bushes are performed seasonally. Whole shrubs of various size classes are collected and sorted and weighed to develop regressions for biomass.
Keywords: Keyword: primary production Keyword Thesaurus: Core Areas
Keywords: Keyword: species Keyword: measurements Keyword: burning Keyword: harvesting Keyword: deserts Keyword: plants Keyword: grasses Keyword: leaves Keyword: shrubs Keyword: stems Keyword Thesaurus: LTER Controlled Vocabulary
Additional Information: Additional Personnel Associated with the Data Collection / Data ProcessingSevilleta Field Crew Employee HistoryChandra Tucker, April 2014-present, Megan McClung, April 2013-present, Stephanie Baker, October 2010-Present, 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.
Intellectual Rights: Data Policies This dataset is released to the public and may be freely downloaded. Please keep the designated Contact person informed of any plans to use the dataset. Consultation or collaboration with the original investigators is strongly encouraged. Publications and data products that make use of the dataset must include proper acknowledgement of the Sevilleta LTER. Datasets must be cited as in the example below. Muldavin, E. 2004. Sevilleta LTER Fertilizer NPP Study Dataset. Albuquerque, NM: Sevilleta Long Term Ecological Research Site Database: SEV155. (Date of download) A copy of any publications using these data must be supplied to the Sevilleta LTER Information Manager.
Distribution: Online: URL: http://sev.lternet.edu/node/1723
Coverage: Geographic Goverage: Geographic Description: Location: Five Points is the area which encompasses the Five Points Black Grama and Five Points Creosote Core study sites and falls along the transition between Chihuahuan Desert Scrub and Desert Grassland habitats. Both sites are subject to intensive research activity, including NPP measurement, phenology observation, pollinator diversity studies, and ground dwelling arthropod and rodent population assessments. There are drought rain-out shelters in both the Black Grama and Creosote sites, as well as the mixed-ecotone, with co-located ET Towers.Vegetation: The Five Points Creosote site is characterized as Chihuahuan Desert Scrub, dominated by a creosotebush overstory with broom snakeweed, purple pricklypear (O. macrocentra) and soapweed yucca as notable shrubs. The site is also characterized by numerous dense grass dominated patches, reflecting proximity to the Five Points Black Grama site and the relatively recent appearance of creosotebush. Dominant grasses are black grama, fluffgrass (Dasyochloa pulchellum), burrograss (Scleropogon brevifolia), bush muhly (M. porteri), and galleta (Pleuraphis jamesii). Notable forb species include field bahia (Bahia absinthifolia), baby aster (Chaetopappa ericoides), plains hiddenflower (Cryptantha crassisepala), Indian rushpea (Hoffmannseggia glauca), Fendlers bladderpod (Lesquerella fendleri), and globemallow (Sphaeralcea spp.). Five Points Black Grama habitat is ecotonal in nature, bordering Chihuahuan Desert Scrub at its southern extent and Plains-Mesa Grassland at its northern, more mesic boundary. There is also a significant presence of shrubs, particularly broom snakeweed (Gutierrezia sarothrae), along with less abundant fourwing saltbush (Atriplex canescens), Mormon tea (Ephedra torreyana), winterfat (Krascheninnikovia lanata), tree cholla (Opuntia imbricata), club cholla (O. clavata), desert pricklypear (O. phaeacantha), soapweed yucca (Yucca glauca), and what are presumed to be encroaching, yet sparsely distributed, creosotebush (Larrea tridentata). Characteristically, the dominant grass is black grama (Bouteloua eriopoda). Spike, sand, and mesa dropseed grasses (Sporobolus contractus, S. cryptandrus, S. flexuosus) and sand muhly (Muhlenbergia arenicola) could be considered co-dominant throughout, along with blue grama (B. gracilis) in a more mesic, shallow swale on the site. Notable forb species include trailing four o’clock (Allionia incarnata), horn loco milkvetch (Astragalus missouriensis), sawtooth spurge (Chamaesyce serrula), plains hiddenflower (Cryptantha crassisepala), blunt tansymustard (Descarania obtusa), wooly plaintain (Plantago patagonica), globemallow (Sphaeralcea wrightii), and mouse ear (Tidestromia lanuginosa)., siteid: 2 Bounding Coordinates: West Bounding Coordinates: -106.717 East Bounding Coordinates: -106.717 North Bounding Coordinates: 34.3381 South Bounding Coordinates: 34.3381 Bounding Altitude: Altitude Minimum: 1615 Altitude Maximum: 1615 Altitude Units: meter Geographic Goverage: Geographic Description: Location: The Five Points area emcompasses both the Five Points Black Grama and Five Points Creosote study sites.  Five Points falls along the transition between the Chihuahuan Desert Scrub and Desert Grassland habitats.  Both core sites are subject to intensive research activities, including NPP measurements, phenology observations, pollinator diversity studies, and ground dwelling arthropod and rodent population assessments.  There are rain-out shelters for drought studies in both the Five Points Black Grama and Five Points Creosote sites.Vegetation: The Five Points Creosote site is characterized as Chihuahuan Desert Scrub, dominated by a creosote overstory, with broom snakeweed, purple pricklypear (Opuntia macrocentra), and soapweed yucca as co-occurring shrubs. The site is also characterized by numerous, dense, grass-dominated patches, reflecting proximity to the Five Points Black Grama Site. Dominant grasses are black grama, fluffgrass (Dasyochloa pulchellum), burrograss (Scleropogon brevifolia), bushmuhly (Muhlenbergia porteri), and galleta (Pleuraphis jamesii). Notable forbs include field bahia (Bahia absinthifolia), baby aster (Chaetopappa ericoides), plains hiddenflower (Cryptantha crassisepala), Indian rushpea (Hoffmannseggia glauca), Fendlers bladderpod (Lesquerella fendleri), and globemallows (Sphaeralcea spp.)., siteid: 3 Bounding Coordinates: West Bounding Coordinates: -106.7358 East Bounding Coordinates: -106.7358 North Bounding Coordinates: 34.3331 South Bounding Coordinates: 34.3331 Bounding Altitude: Altitude Minimum: 1615 Altitude Maximum: 1615 Altitude Units: meter Geographic Goverage: Geographic Description: Location: The mixed shrub (MS) location consists of burned and unburned areas.  Both the mixed shrub burned (MSB) and mixed shrub unburned (MSU) areas are on the north side of the road running southeast from Five Points.Vegetation: This area is dominated by creosotebush (Larrea tridenta) but also maintains a relatively dense understory of black grama in comparison to true shrub land., History: The northwest half of the site was burned in June 2003. The southeast half was used as the control. Plots were established in spring 2004., siteid: 33 Bounding Coordinates: West Bounding Coordinates: -106.696 East Bounding Coordinates: -106.696 North Bounding Coordinates: 34.31426 South Bounding Coordinates: 34.31426 Bounding Altitude: Altitude Minimum: 1640 Altitude Maximum: 1640 Altitude Units: meter Temporal Coverage: Date Range: Begin Date: Calendar Date: 2007-02-21 End Date: Calendar Date: 2015-10-27
Maintenance Information: Description: January 2009: All data sets (Winter, Spring, and Fall) for 2007-2008 were combined, checked for errors, and imported into Navicat. Variables site was added and burned and unburned were used as treatments instead. Any calculated measurements (i.e. volume, twig+leaf weight, etc.) were removed from data set. -Changed missing data on volume and weightt due to plant being dead to -888. -Changed missing data on volume and weight due to human error to -999. -- A. Swann
Contact: Position Title: Information Manager Organization: LTER Network Office Physical Address: Delivery Address: UNM Biology Department, MSC03-2020 Delivery Address: 1 University of New Mexico City: Albuquerque Locality: NM Postal Code: 87131-0001 Phone: USA Phone: 505 277-2535 Phone: 505 277-2541 Email: tech-support@lternet.edu URL: http://www.lternet.edu
Contact: Individual: Information Manager Sevilleta LTER Organization: SEV LTER Physical Address: Delivery Address: 1 University of New Mexico City: Albuquerque Postal Code: 87131 Phone: (505) 277-2109 Phone: (505) 277.5355 Email: data-use@sevilleta.unm.edu
Publication Place:	Sevilleta LTER
Method Step: Description: Shrub Harvesting Creosote shrubs of various size classes are measured . Height of the shrub is measured as well as the diameter of the crown at its widest point and also a diameter perpendicular to this first diameter. The shrubs are then harvested. Sorting and Drying Creosote shrubs are separated into leaves, twigs (small stems that are left after removing all of the green leaves), and stems (the large main stems of creosote. After the samples are sorted they are dried for up to five days. Weights and Measurements The dry weight for all samples leaves, twigs, and stems are recorded. For each stem sample, the length (cm) of each stem is measured and recored as total stem length (the sum of all stems). A small, medium, and large bush from both burned and unburned treatments are randomly selected for future C/N analysis.
Quality Control: Description: Data were scanned by eye to catch mistakes. Data were then filtered in excel to determine if all parameters were met. Data were combined and imported into Navicat using the import wizard.
Data Table: Entity Name: sev202_pqweight_20151116.txt Entity Description: Data for SEV202. Object Name: sev202_pqweight_20151116.txt Data Format: Text Format: Number of Header Lines: 1 Record Delimiter: \r\n Attribute Orientation: column Simple Delimited: Field Delimiter: , Distribution: Online: URL: https://pasta.lternet.edu/package/data/eml/knb-lter-sev/202/312957/457c85beef520b2c95d27f499e770e4a Coverage: Temporal Coverage: Date Range: Begin Date: Calendar Date: 2007-03-14 End Date: Calendar Date: 2015-06-03 Attribute List: Attribute Name: date Attribute Label: date Attribute Definition: The date on which data or a sample was collected. Storage Type: date Measurement Scale: Datetime: Format String: MM/DD/YY Attribute Name: year Attribute Label: year Attribute Definition: The year in which data was collected. Storage Type: date Measurement Scale: Datetime: Format String: YYYY Attribute Name: season Attribute Label: season Attribute Definition: The season in which data was collected. Storage Type: string Measurement Scale: Nominal: Non Numeric Domain: Enumerated Domain: Code Definition: Code: 1 Definition: winter Code Definition: Code: 2 Definition: spring Code Definition: Code: 3 Definition: fall Attribute Name: site Attribute Label: site Attribute Definition: The site at which data was collected. Storage Type: string Measurement Scale: Nominal: Non Numeric Domain: Enumerated Domain: Code Definition: Code: C Definition: Creosote site Code Definition: Code: MS Definition: Mixed shrub site Code Definition: Code: CG Definition: Creosote grid site Attribute Name: treatment Attribute Label: treatment Attribute Definition: The treatment applied to a site. Storage Type: string Measurement Scale: Nominal: Non Numeric Domain: Enumerated Domain: Code Definition: Code: B Definition: burned Code Definition: Code: C Definition: control (unburned) Attribute Name: species Attribute Label: species Attribute Definition: The Kartez code for a plant species as designated by the USDA Plants Database. Storage Type: string Measurement Scale: Nominal: Non Numeric Domain: Text Domain: Definition: The Kartez code for a plant species as designated by the USDA Plants Database. Attribute Name: sample Attribute Label: sample Attribute Definition: The unique number of a sample. Storage Type: string Measurement Scale: Nominal: Non Numeric Domain: Text Domain: Definition: The unique number of a sample. Attribute Name: width_1 Attribute Label: width_1 Attribute Definition: The diameter of a shrub at the widest point. Measurement Scale: Ratio: Unit: Custom Unit: centimeters Precision: 1 Numeric Domain: Number Type: real Attribute Name: width_2 Attribute Label: width_2 Attribute Definition: The diameter of a shrub perpendicular to width_1. Measurement Scale: Ratio: Unit: Custom Unit: centimeters Precision: 1 Numeric Domain: Number Type: real Attribute Name: height Attribute Label: height Attribute Definition: The height from the ground to the tallest point on a shrub. Measurement Scale: Ratio: Unit: Custom Unit: centimeters Precision: 0.5 Numeric Domain: Number Type: real Bounds: Minimum: 1.6 Maximum: 76 Attribute Name: stem_length Attribute Label: stem_length Attribute Definition: The sum of all stem lengths for an individual/sample. Measurement Scale: Ratio: Unit: Custom Unit: centimeters Precision: 1 Numeric Domain: Number Type: real Attribute Name: stem_weight Attribute Label: stem_weight Attribute Definition: The total weight of all stems for an individual/sample. Measurement Scale: Ratio: Unit: Custom Unit: grams Precision: 0.01 Numeric Domain: Number Type: real Attribute Name: leaf_weight Attribute Label: leaf_weight Attribute Definition: The total weight of leaves for an individual/sample. Measurement Scale: Ratio: Unit: Custom Unit: grams Precision: 0.01 Numeric Domain: Number Type: real Attribute Name: twig_weight Attribute Label: twig_weight Attribute Definition: The total weight of all twigs for an individual/sample. Measurement Scale: Ratio: Unit: Custom Unit: grams Precision: 0.01 Numeric Domain: Number Type: real Attribute Name: comments Attribute Label: comments Attribute Definition: A special statement related to an observation. Storage Type: string Measurement Scale: Nominal: Non Numeric Domain: Enumerated Domain: Code Definition: Code: na Definition: not applicable