Summary Information
Small Mammal Exclosure Study (SMES) Vegetation Data from the Chihuahuan Desert Grassland and Shrubland at the Sevilleta National Wildlife Refuge, New Mexico (2006-2009)
Creator:
Individual: David Lightfoot
Organization: SEV LTER
Physical Address:
Delivery Address: Sevilleta LTER, 167 Castetter Hall, University of New Mexico
City: Albuquerque
Locality: NM
Postal Code: 87131
Email: dlightfo@unm.edu
System ID: 9617
Associated Party:
Individual: Amaris Swann
Organization: SEV LTER
Physical Address:
Delivery Address: ,
Postal Code: 0
Phone: (505) 277-8119
Email: amswann@sevilleta.unm.edu
System ID: 15021
Role: data manager
Publication Date: 2011
Language: english
Abstract:
This is data for vegetation canopy cover measured from each of the SMES study plots. Vegetation canopy cover was measured from each of the 36 one-meter2 quadrats twice each year. Animal consumers have important roles in ecosystems, determining plant species composition and structure, regulating rates of plant production and nutrient, and altering soil structure and chemistry. The purpose of this study is to determine whether or not the activities of small mammals regulate plant community structure, plant species diversity, and spatial vegetation patterns in Chihuahuan Desert shrublands and grasslands.
Keywords:
Keyword: populations
Keyword Thesaurus: Core Areas
Keywords:
Keyword: species
Keyword: plant species
Keyword: measurements
Keyword: canopies
Keyword: deserts
Keyword: grasslands
Keyword: mammals
Keyword: small mammals
Keyword: plants
Keyword: vegetation
Keyword Thesaurus: LTER Controlled Vocabulary
Additional Information:
Additional Information on the personnel associated with the Data Collection / Data Processing Sevilleta Field Crew Employee History Megan McClung, April 2013-present, Stephanie Baker, October 2010-Present, John Mulhouse, August 2009-Present, 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/1364
Coverage:
Geographic Goverage:
Geographic Description: Location: The Rio Salado is an ephemeral tributary of the Rio Grande on the west side of the Sevilleta NWR, flowing west by northwest to east by southeast. Rio Salado Grassland and Rio Salado Larrea are two study sites established in 1989. These sites were established as counterparts to sites at Five Points. Between 1989 and 1998, vegetation, litter decomposition, and ground dwelling arthropod and rodent populations were studied at both sites. Core studies at these sites were largely terminated in 1998, although rodent populations are still monitored at the Rio Salado Larrea site because the Small Mammal Exclosure Study's Larrea plots are co-located there. Rio Salado Grassland is the location Met Station 44.The Rio Salado study sites are accessed by taking the San Acacia exit, going west and then taking the frontage road back north to the Sevilleta NWR gate.  After entering the refuge turn left after 0.2 mi and take this road 1.4 mi to a "T" in the road at the power lines.  An earthen berm stops road travel here and the met station is located about 300 m west on the blocked road. Vegetation: The Rio Salado Larrea site is characterized as Chihuahuan Desert Scrub, dominated by creosotebush (Larrea tridentata), with honey mesquite, fourwing saltbush, purple pricklypear (O. macrocentra), and broom snakeweed as co-occurring shrubs. Dominant grasses are black grama (Bouteloua eriopoda), galleta (Pleuraphis jamesii), burrograss (Scleropogon brevifolia), and fluffgrass (Dasyochloa pulchellum). Common forb species include desert holly (Acourtia nana), spectaclepod (Dimorphocarpa spp.), blackfoot daisey (Melampodium leucanthum), twinleaf (Senna bauhinoides), globemallow (Sphaeralcea wrightii), and plains hiddenflower (Cryptantha crassisepala). While individual creosote bushes tend to be larger, overall plant cover is less than at the creosote core site at Five Points, with more exposed embedded stones and gravel on the soil surface, creating a pavement-like appearance.,
Bounding Coordinates:
West Bounding Coordinates: 106.9267
East Bounding Coordinates: 106.9267
North Bounding Coordinates: 34.296
South Bounding Coordinates: 34.296
Bounding Altitude:
Altitude Minimum: 1503
Altitude Maximum: 1503
Altitude Units: meter
Geographic Goverage:
Geographic Description: Location: Five Points Black Grama is on the transition between Chihuahuan Desert Scrub and Desert Grassland habitat. The site is subject to intensive research activity, including assessments of net primary productivity, phenology, and pollinator diversity, amongst other projects.  It is the site of the unburned black grama (GU) component of the Burn NPP study. On August 4, 2009, a lightning-initiated fire began on the Sevilleta National Wildlife Refuge. By August 5, 2009, the fire had reached the Five Points Black Grama site.  Portions of this site were burned, but not the entirety.  See individual projects for further information on the effects of the burn.  Vegetation: The Five Points Black Grama site is ecotonal in nature, bordering Chihuahuan Desert Scrub at its southern extent and Plains-Mesa Grassland at its northern, more mesic boundary. Characteristically, the dominant grass is black grama (Bouteloua eriopoda).,
Bounding Coordinates:
West Bounding Coordinates: -106.736
East Bounding Coordinates: -106.736
North Bounding Coordinates: 34.3331
South Bounding Coordinates: 34.3331
Bounding Altitude:
Altitude Minimum: 1615
Altitude Maximum: 1615
Altitude Units: meter
Temporal Coverage:
Date Range:
Begin Date:
Calendar Date: 1995-05-02
End Date:
Calendar Date: 2008-10-22
Purpose:
The purpose of this study is to determine whether or not the activities of small mammals regulate plant community structure, plant species diversity, and spatial vegetation patterns in Chihuahuan Desert shrublands and grasslands. What role if any do indigenous small mammal consumers have in maintaining desertified landscapes in the Chihuahuan Desert? Additionally, how do the effects of small mammals interact with changing climate to affect vegetation patterns over time? This study will provide long-term experimental tests of the roles of consumers on ecosystem pattern and process across a latitudinal climate gradient. The following questions or hypotheses will be addressed. 1) Do small mammals influence patterns of plant species composition and diversity, vegetation structure, and spatial patterns of vegetation canopy cover and biomass in Chihuahuan Desert shrublands and grasslands? Are small mammals keystone species that determine plant species composition and physiognomy of Chihuahuan Desert communities? Do small mammals have a significant role in maintaining the existence of shrub islands and spatial heterogeneity of creosotebush shrub communities? 2) Do small mammals affect the taxonomic composition and spatial pattern of vegetation similarly or differently in grassland communities as compared to shrub communities? How do patterns compare between grassland and shrubland sites, and how do these relatively small scale patterns relate to overall landscape vegetation patterns? 3) Do small mammals interact with short-term (annual) and long-term (decades) climate change to affect temporal changes in vegetation spatial patterns and species composition? 4) Do small mammals interact with other herbivore and granivore consumers enough to affect the species composition and abundance’s of other consumers such as ants and grasshoppers?
Maintenance Information:
Description:
SMES vegetation quad data from 1995-2008 were compiled and imported into MySQL. Tapes were listened to in order to distinguish between missing data points and quads that had no plants in them. Codes were updated according to the UDSA plants database (http://plants.usda.gov/). Contact data manager for old plant codes.All uknown plants that have since been identified were also updated. Missing data due to human error is represented as -999. Data that is not relevent (ie. height for dea d plants) is represented as -888. If a quad had no plants in it the species code is NONE and the cover and height are 0. For 1995-1998 spring data, all perennial species were removed. If the quad had only perennials in it, the quad was designated as NONE. For dead plant observations, all height observations were recorded -888. 'SEED' is not a Kartez species code, instead it represents unidentifiable seedlings. --Yang Xia January 2009 'SEEDS1 and SEEDS2' are not Kartez species codes, instead they represent unidentifiable seedlings. Changed CHSE to CHSES. Changed EUX4 to EUEX4. Changed CRCR to CRCR3. Changed PLJQ to PLJA. Changed PEBA2 to SPA10. --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:
Experimental Design There are 2 study sites, the Five Points grassland site, and the Rio Salado creosotebush site. Each study site is 1 km by 0.5 km in area. Three rodent trapping webs and four replicate experimental blocks of plots are randomly located at each study site to measure vegetation responses to the exclusion of small mammals. Each block of plots is 96 meters on each side. Each block of plots consists of 4 experimental study plots, each occupying 1/4 of each block. The blocks of study plots are all oriented on a site in a X/Y coordinate system, with the top to the north. Treatments within each block include one unfenced control plot (Treatment: C), one plot fenced with hardware cloth and poultry wire to exclude rodents and rabbits (Treatment: R), and one plot fenced only with poultry wire to exclude rabbits (Treatment: L). The three treatments were randomly assigned to each of the four possible plots in each block independently, and their arrangements differ from block to block. Each of the three plots in a replicate block are separated by 20 meters. Each experimental measurement plot measures 36 meters by 36 meters. A grid of 36 sampling points are positioned at 5.8-meter intervals on a systematically located 6 by 6 point grid within each plot. A permanent one-meter by one-meter vegetation measurement quadrat is located at each of the 36 points. A 3-meter wide buffer area is situated between the grid of 36 points and the perimeter of each plot. Vegetation Quadrat Measurements The foliage canopy area and maximum height of each plant species is measured from each quadrat. All cover values are measured from the vegetation measurement frame, which is 1 meter by 1 meter, and partitioned into a grid of 100, 10 cm by 10 cm squares. Cover is measured by counting the number of 10cm squares that are occupied by the foliage canopy of a particular plant species, or by the soil disturbance, leaf litter etc. Portions down to the 0.1 of a 10cm square are also measured. NOTE: AS OF 2006, ALL PLANT CODES WERE UPDATED TO REFLECT THE USDA PLANTS DATABASE, prior to this plant taxonomic classification followed that of Allred (1996). For dead plant foliage (plant is dead,but still attached to the soil), just cover and not height was recorded.
Quality Control:
Description:
All data were filtered to identify any duplicates or mistakes in the original excel files. A perl script was then used to verify the consistiency of the parameters.
Data Table:
Entity Name: sev097_smesquad_09082011.txt
Entity Description: Data for SEV097.
Object Name: sev097_smesquad_09082011.txt
Data Format:
Text Format:
Number of Header Lines: 1
Record Delimiter: \r\n
Attribute Orientation: column
Simple Delimited:
Field Delimiter: ,
Quote Character: double quote
Distribution:
Online:
URL: https://pasta.lternet.edu/package/data/eml/knb-lter-sev/97/182096/3d3b97661820b784dee1ab7057f70028
Coverage:
Temporal Coverage:
Date Range:
Begin Date:
Calendar Date: 2005-05-13
End Date:
Calendar Date: 2009-04-13
Attribute List:
Attribute Name: userid
Attribute Label: userid
Attribute Definition: Initials of person taking data (see people history).
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Text Domain:
Definition: Initials of person taking data (see people history).
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: Rio Salado creosote site
Code Definition:
Code: G
Definition: Black grama site
Attribute Name: Block
Attribute Label: Block
Attribute Definition: Block in a randomized block design for SMES study
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Text Domain:
Definition: Block in a randomized block design for SMES study
Attribute Name: Treatment
Attribute Label: Treatment
Attribute Definition: Treatment is the control plot or type of exclosure plot that the data were recorded from.
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Enumerated Domain:
Code Definition:
Code: C
Definition: Control
Code Definition:
Code: L
Definition: Lagomorph exclosure
Code Definition:
Code: R
Definition: Rodent and Lagomorph exclosure
Attribute Name: Plot
Attribute Label: Plot
Attribute Definition: Plot within study design
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Text Domain:
Definition: Plot within study design
Attribute Name: Quadrat
Attribute Label: Quad
Attribute Definition: Quadrat that data were recorded from.
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Text Domain:
Definition: Quadrat that data were recorded from.
Attribute Name: Cond
Attribute Label: Cond
Attribute Definition: Condition of plant.
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Enumerated Domain:
Code Definition:
Code: L
Definition: Live
Code Definition:
Code: D
Definition: Dead
Attribute Name: Season
Attribute Label: Season
Attribute Definition: Season and year the data were collected (Spring YYYY or Fall YYYY).
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Text Domain:
Definition: Season and year the data were collected (Spring YYYY or Fall YYYY).
Attribute Name: Species
Attribute Label: Species
Attribute Definition: Kartez code for species being sampled based on the USDA plants database.
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Text Domain:
Definition: Kartez code for species being sampled based on the USDA plants database.
Attribute Name: Height
Attribute Label: Height
Attribute Definition: Maximum foliage canopy height of each species measured on each quadrat. Height not recorded for dead plants.
Measurement Scale:
Ratio:
Unit:
Custom Unit: centimeters
Numeric Domain:
Number Type: real
Attribute Name: Cover
Attribute Label: Cover
Attribute Definition: Total vegetation canopy cover by species measured on each quadrat.
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Text Domain:
Definition: Total vegetation canopy cover by species measured on each quadrat.
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
Attribute Name: tapeid
Attribute Label: tapeid
Attribute Definition: Code to indicate source of raw data.
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Text Domain:
Definition: Code to indicate source of raw data.
Attribute Name: record_date
Attribute Label: record_date
Attribute Definition: Date on which the data was collected.
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Text Domain:
Definition: Date on which the data was collected.