Summary Information
Small Mammal Mark-Recapture Population Dynamics at Core Research Sites at the Sevilleta National Wildlife Refuge, New Mexico (1989 - present)
Creator:
Individual: Seth Newsome
Organization: University of New Mexico
Physical Address:
Delivery Address: Department of Biology, MSC03-2020
City: Albuquerque
Locality: NM
Postal Code: 87131
Phone: US
Email: newsome@unm.edu
Metadata Provider:
Individual: Information Manager Sevilleta LTER
Physical Address:
Delivery Address: 1 University of New Mexico
City: Albuquerque
Postal Code: 87131
Phone: US
Phone: (505) 277-2109
Phone: (505) 277.5355
Email: data-use@sevilleta.unm.edu
Associated Party:
Individual: Stephanie Baker
Physical Address:
Delivery Address: Department of Biology
City: Albuquerque
Locality: NM
Postal Code: 87131
Phone: US
Phone: (505) 277-8119
Email: srbaker@sevilleta.unm.edu
Role: data manager
Associated Party:
Individual: Stephanie Baker
Physical Address:
Delivery Address: Department of Biology
City: Albuquerque
Locality: NM
Postal Code: 87131
Phone: US
Phone: (505) 277-8119
Email: srbaker@sevilleta.unm.edu
Role: field crew
Associated Party:
Individual: Megan McClung
Organization: Sevilleta LTER
Physical Address:
Delivery Address: 1 University of New Mexico, 167 Castetter Hall, MSC03 2020
City: Albuquerque
Locality: NM
Postal Code: 87131
Phone: US
Email: mmcclung@sevilleta.unm.edu
Role: field crew
Associated Party:
Individual: Chandra Tucker
Physical Address:
Phone: US
Email: ctucker@sevilleta.unm.edu
Role: field crew
Publication Date: 2016-03-03
Language: English
Abstract:
This file contains mark/recapture trapping data collected from 1989-2012 on permanently established web trapping arrays at 8 sites on the Sevilleta NWR. At each site 3 trapping webs are sampled for 3 consecutive nights in spring and fall. Not all sites have been trapped for the entire period. Each trapping web consists of 145 rebar stakes numbered from 1-145. There are 148 traps deployed on each web: 12 along each of 12 spokes radiating out from a central point (stake #145) plus 4 traps at the center point. The trapping sites are representative of Chihuahuan Desert Grassland, Chihuahuan Desert Shrubland, Pinyon-Juniper Woodland, Juniper Savanna, Plains-Mesa Sand Scrub and Blue Grama Grassland.
Keywords:
Keyword: populations
Keyword Thesaurus: Core Areas
Keywords:
Keyword: habitats
Keyword: community structure
Keyword: consumers
Keyword: herbivores
Keyword: demography
Keyword: taxonomy
Keyword: community dynamics
Keyword: abundance
Keyword: community composition
Keyword: diversity
Keyword: species composition
Keyword: census
Keyword: life history
Keyword: trapping
Keyword: deserts
Keyword: grasslands
Keyword: small mammals
Keyword Thesaurus: LTER Controlled Vocabulary
Additional Information:
Additional Information on the personnel associated with the Data Collection / Data Processing Sevilleta Field Crew Employee History Chandra 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. *In fall 2013, the Grassland Core site was not able to be trapped due to government shutdown. 
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. A copy of any publications using these data must be supplied to the Sevilleta LTER Information Manager.
Distribution:
Online:
URL: http://sevdeims-d.lternet.edu/data/sev-8
Coverage:
Geographic Goverage:
Geographic Description: 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.
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
Geographic Goverage:
Geographic Description: 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.  
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
Geographic Goverage:
Geographic Description: 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 & 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. 
Bounding Coordinates:
West Bounding Coordinates: -106.927
East Bounding Coordinates: -106.927
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: 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 & 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 as the Small Mammal Exclosure Study's Larrea plots are co-located there. Rio Salado Grassland is the location of 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.  
Bounding Coordinates:
West Bounding Coordinates: -106.927
East Bounding Coordinates: -106.927
North Bounding Coordinates: 34.269
South Bounding Coordinates: 34.269
Bounding Altitude:
Altitude Minimum: 1503
Altitude Maximum: 1503
Altitude Units: meter
Geographic Goverage:
Geographic Description: Ladron Foothills sites include Red Tank and Two-22 in the foothills of the Sierra Ladrones on the West side of the refuge.
Bounding Coordinates:
West Bounding Coordinates: -107.03
East Bounding Coordinates: -107.03
North Bounding Coordinates: 34.418
South Bounding Coordinates: 34.418
Bounding Altitude:
Altitude Minimum: 1766
Altitude Maximum: 1766
Altitude Units: meter
Geographic Goverage:
Geographic Description: The Cerro Montosa Pinyon-Juniper site has been the location of major Sevilleta LTER research since 1989. Meteorological trends, net primary productivity, rodent and ground-dwelling arthropod populations, mycorrhizal responses to fertilizer, pinyon-juniper fruit and nut production, and pinyon mortality are all being investigated at this site. Previous studies have included analyses of pinyon tree rings for regional climate reconstruction.
Bounding Coordinates:
West Bounding Coordinates: -106.535
East Bounding Coordinates: -106.535
North Bounding Coordinates: 34.368
South Bounding Coordinates: 34.368
Bounding Altitude:
Altitude Minimum: 1976
Altitude Maximum: 1976
Altitude Units: meter
Geographic Goverage:
Geographic Description: The Goat Draw Juniper Savanna Core Site was established in 1998 in order to provide data at the lower end of the transition from the Pinon-Juniper Woodland habitat at the Cerro Montoso site to Juniper Savanna.
Bounding Coordinates:
West Bounding Coordinates: -106.523
East Bounding Coordinates: -106.523
North Bounding Coordinates: 34.4146
South Bounding Coordinates: 34.4146
Bounding Altitude:
Altitude Minimum: 1790
Altitude Maximum: 1790
Altitude Units: meter
Geographic Goverage:
Geographic Description: The Blue Grama core site is one of five core SEV LTER study sites. Meteorological trends, rodent abundance, pollinator diversity, phenology, and NPP are all being investigated. Additional studies have examined the Bootleg Canyon fire of 1998 and subsequent effects on the patch dynamics of grasses.
Bounding Coordinates:
West Bounding Coordinates: -106.631
East Bounding Coordinates: -106.631
North Bounding Coordinates: 34.3348
South Bounding Coordinates: 34.3348
Bounding Altitude:
Altitude Minimum: 1670
Altitude Maximum: 1670
Altitude Units: meter
Temporal Coverage:
Date Range:
Begin Date:
Calendar Date: 1989-05-30
End Date:
Calendar Date: 2015-09-17
Maintenance Information:
Description:
Trap sets require care and cleaning as well as proper storage. Otherwise, webs are made up of durable rebar and aluminum tags which only need repair if disturbed. Tools used in the field - scales and rulers, pouches, trap bags and ziplock supply must be maintained on hand at SevFS for trapping events.
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
Physical Address:
Delivery Address: 1 University of New Mexico
City: Albuquerque
Postal Code: 87131
Phone: US
Phone: (505) 277-2109
Phone: (505) 277.5355
Email: data-use@sevilleta.unm.edu
Publisher:
Individual: Information Manager Sevilleta LTER
Physical Address:
Delivery Address: 1 University of New Mexico
City: Albuquerque
Postal Code: 87131
Phone: US
Phone: (505) 277-2109
Phone: (505) 277.5355
Email: data-use@sevilleta.unm.edu
Publication Place: Sevilleta LTER
Method Step:
Description:
Sampling Design Permanent capture-mark-release trapping webs were used to estimate density (number of animals per unit area) of each rodent species at each site. The method makes use of concepts from distance sampling, i.e., point counts or line-intercept techniques. The method makes no attempts to model capture-history data, therefore it was not necessary to follow individuals through time (between sessions). Distance sampling methods allow for sighting or detection (capture) probabilities to decrease with increasing distance from the point or line. The modeling of detection probability as a function of distance forms the basis for estimation. Trapping webs were designed to provide a gradient of capture probabilities, decreasing with distance from the web center. Density estimation from the trapping web was based on three assumptions:1. All animals located at the center of the web were caught with probability 1.0; 2. Individuals did not move preferentially toward or away from the web center; 3. Distances from the web center to each trap station were measured accurately. Each web consisted of 12 trap lines radiating around a center station, each line with 12 permanently-marked trap stations. In order to increase the odds of capturing any animals inhabiting the center of a web, the center station had four traps, each pointing in a cardinal direction, and the first four stations of each trap line were spaced only 5 m apart, providing a trap saturation effect. The remaining eight stations in a trap line were spaced at 10 m intervals. The web thus established a series of concentric rings of traps. Traps in the ring nearest the web center are close together, while the distances separating traps that form a particular ring increase with increasing distance of the ring from the web center. The idea is that the web configuration produces a gradient in trap density and, therefore, in the probability of capture. Three randomly distributed trapping webs were constructed at each site. The perimeters of webs were placed at least 100 m apart in order to minimize homerange overlap for individuals captured in the outer portion of neighboring webs. Measurement Techniques Each site containing three webs was sampled for three consecutive nights during spring (in mid May or early June) and summer (in mid July or early August for years 1989 to 1993, then mid September to early October for years 1994 through 2000). In that rodent populations were not sampled monthly over the study period, there is no certainly that either spring or summer trapping times actually captured annual population highs or lows. Based on reproductive data in the literature, an assumption was made that sampling times chosen represent periods of the year when rodents have undergone, and would register, significant seasonal change in density. During each trapping session, one Sherman live trap (model XLF15 or SFAL, H. B. Sherman Traps, Tallahassee, FL) was placed, baited with rolled oats, and set at each permanent, numbered station (four in the center) on each web, for a total 444 traps over three webs. Traps were checked at dawn each day, closed during the day, and reset just before dusk. Habitat, trap station number, species, sex, age (adult or juvenile), mass, body measurements (total length, tail length, hind foot length, ear length), and reproductive condition (males: scrotal or non-scrotal; females: lactating, vaginal or pregnant) were recorded for each initial capture of an individual. Each animal was marked on the belly with a permanent ink felt pen in order to distinguish it from other individuals during the same trapping session. The trap station number for an initial capture related to a particular trapping ring on a web and, therefore, to a particular distance from the center of the web. The area sampled by a ring of traps was computed based on circular zones whose limits are defined by points halfway between adjacent traps along trap lines; an additional 25 m radius was added to the outer ring of traps in order to account for homerange size of individuals caught on the outer ring. Analytical ProceduresArea trapped and number of individuals caught for each ring of traps was the basis for estimating the probability density function of the area sampled. The program DISTANCE produced the estimators used to calculate density. Where sample size for a particular species and web was less than an arbitrarily chosen n=10, the number of individuals captured during that session was simply divided into the area of the web plus the additional 25 m radius (4.9087 ha). This dataset includes only the raw capture data.
Instrumentation:   Sherman live traps: model XLF15 or SFAL, H. B. Sherman Traps, Tallahassee, FL
Data Table:
Entity Name: sev008_rodentpopns_20151022.txt
Entity Description: Rodent population data.
Object Name: sev008_rodentpopns_20151022.txt
Size: 1299590
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/8/297972/2430123472c58ce9535f33df7312f42e
Coverage:
Temporal Coverage:
Date Range:
Begin Date:
Calendar Date: 1989-04-01
End Date:
Calendar Date: 2015-04-23
Attribute List:
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: location
Attribute Label: location
Attribute Definition: site name at which trapping occurs
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Enumerated Domain:
Code Definition:
Code: two22
Definition: two22
Code Definition:
Code: 5pgrass
Definition: five points grass
Code Definition:
Code: 5plarrea
Definition: five points larrea
Code Definition:
Code: rsgrass
Definition: rio salado grass
Code Definition:
Code: goatdraw
Definition: goat draw
Code Definition:
Code: bluegram
Definition: blue grama
Code Definition:
Code: savanna
Definition: savanna
Attribute Name: season
Attribute Label: season
Attribute Definition: Season in which trapping occurs
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Enumerated Domain:
Code Definition:
Code: 1
Definition: Spring
Code Definition:
Code: 2
Definition: Summer
Code Definition:
Code: 3
Definition: Fall
Attribute Name: night
Attribute Label: night
Attribute Definition: The night that the trapping was done
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Text Domain:
Definition: The night that the trapping was done
Attribute Name: web
Attribute Label: web
Attribute Definition: The number of the web being sampled, which can range from 1-5 depending on site and project.
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Text Domain:
Definition: The number of the web being sampled, which can range from 1-5 depending on site and project.
Attribute Name: trap
Attribute Label: trap
Attribute Definition: The numbered tag on rebar adjacent to the trap
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Text Domain:
Definition: The numbered tag on rebar adjacent to the trap
Attribute Name: recap
Attribute Label: recap
Attribute Definition: An indication if the animal was a recapture or not
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Enumerated Domain:
Code Definition:
Code: y
Definition: a recapture from that week only
Code Definition:
Code: n
Definition: not a recapture
Attribute Name: species
Attribute Label: species
Attribute Definition: Four letter code for small mammal species.
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Enumerated Domain:
Code Definition:
Code: amin
Definition: Ammospermophilus interpres
Code Definition:
Code: amle
Definition: Ammospermophilus leucurus
Code Definition:
Code: eudo
Definition: Eutamias dorsalis
Code Definition:
Code: euqu
Definition: Eutamias quadrivittatus
Code Definition:
Code: spsp
Definition: Spermophilus spilosoma
Code Definition:
Code: spva
Definition: Spermophilus variegatus
Code Definition:
Code: chin
Definition: Chetodipus intermedius
Code Definition:
Code: pgfl
Definition: Perognathus flavescens
Code Definition:
Code: pgfv
Definition: Perognathus flavus
Code Definition:
Code: pgsp
Definition: Perognathus sp.
Code Definition:
Code: dime
Definition: Dipodomys merriami
Code Definition:
Code: dior
Definition: Dipodomys ordii
Code Definition:
Code: disp
Definition: Dipodomys spectabilis
Code Definition:
Code: dipo
Definition: Dipodomys sp.
Code Definition:
Code: neal
Definition: Neotoma albigula
Code Definition:
Code: nemi
Definition: Neotoma micropus
Code Definition:
Code: nesp
Definition: Neotoma sp.
Code Definition:
Code: onar
Definition: Onychomys arenicola
Code Definition:
Code: onle
Definition: Onychomys leucogaster
Code Definition:
Code: onsp
Definition: Onychomys sp.
Code Definition:
Code: pebo
Definition: Peromyscus boylii
Code Definition:
Code: pedi
Definition: Peromyscus difficilis
Code Definition:
Code: peer
Definition: Peromyscus eremicus
Code Definition:
Code: pele
Definition: Peromyscus leucopus
Code Definition:
Code: pema
Definition: Peromyscus maniculatus
Code Definition:
Code: petr
Definition: Peromyscus truei
Code Definition:
Code: pesp
Definition: Peromyscus sp.
Code Definition:
Code: remg
Definition: Reithrodontomys megalotis
Code Definition:
Code: remn
Definition: Reithrodontomys montanus
Code Definition:
Code: resp
Definition: Reithrodontomys sp.
Code Definition:
Code: sihi
Definition: Sigmodon hispidus
Code Definition:
Code: syau
Definition: Sylvilagus auduboni
Code Definition:
Code: na
Definition: unknown genus and species
Attribute Name: sex
Attribute Label: sex
Attribute Definition: Gender of animal (M or F)
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Text Domain:
Definition: Gender of animal (M or F)
Attribute Name: age
Attribute Label: age
Attribute Definition: Estimated from animal's weight.
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Enumerated Domain:
Code Definition:
Code: a
Definition: adult
Code Definition:
Code: j
Definition: juvenile
Missing Value Code:
Code: na
Code Explanation: missing
Attribute Name: reprod
Attribute Label: reprod
Attribute Definition: Reproductive condition of capture
Storage Type: string
Measurement Scale:
Nominal:
Non Numeric Domain:
Enumerated Domain:
Code Definition:
Code: l
Definition: lactating
Code Definition:
Code: v
Definition: vaginal
Code Definition:
Code: p
Definition: pregnant
Code Definition:
Code: st
Definition: scrotal
Code Definition:
Code: na
Definition: none of the former or not taken
Attribute Name: mass
Attribute Label: mass
Attribute Definition: mass of captured rodent in grams
Measurement Scale:
Ratio:
Unit:
Standard Unit: gram
Precision: 0.5
Numeric Domain:
Number Type: real
Missing Value Code:
Code: .
Code Explanation: missing