Cross Bar Cooperative Management Area
Basic information
Sample name: Cross Bar Cooperative Management Area

Reference: W. J. Priesmeyer, R. S. Matlack, and R. T. Kazmaier. 2014. Precipitation and fire impacts on small mammals in shortgrass prairie. Prairie Naturalist 46:11-20 [ER 1651]
Country: United States
State: Texas

Coordinate: 35° 21' N, 101° 51' W
Basis of coordinate: based on nearby landmark
Geography comments: "16 km north of Amarillo" (coordinate extrapolated from Amarillo)
Climate and habitat
Habitat: temperate savanna
Substrate: ground surface
Disturbance: recent fire
MAT: 13.8
MAP: 497.0
Habitat comments: "a 4, 856 ha shortgrass prairie that is situated at the junction of the High Plains and Rolling Plains ecoregions... Currently, this property is ungrazed but had a history of livestock use from 1932 until 1993... We conducted 2-year burns in spring (Mar–Apr) of 2002 and 2003, 2005, 2007, and 2009. We burned four-year treatments in 2003 and 2007"
climate data are for Amarillo and are from Turner et al. (2003, Soil Sci. Soc. Am. J.)
Life forms: rodents
Sampling methods: line transect, baited, Sherman traps
Sample size: 833
Years: 2004 - 2009
Seasons: spring, autumn
Nets or traps: 540
Net or trap nights: 17010
Sampling comments: "We divided the Cross Bar CMA into three treatments (e.g., 2-year fire return, 4-year fire return, and 10-year non-burned control) that were replicated three times for a total of nine experimental plots... In 2004, we began sampling small mammals two times per year within one week of prescribed burning. We con- ducted the growing-season sampling session between March and April and the dormant-season sampling session between September and November. We baited traps with oats and provided polyester bedding for thermal cover. Each sampling session consisted of a 2-week period over which nine transects were sampled. Trapping sessions lasted for three consecutive nights for a total of 1, 620 trap nights per trapping session. Each transect had 15 stations spaced 15 m apart, sampled with two Sherman live traps (7.6 × 8.9 × 30.4 cm; HB Sherman Trap Company, Tallahassee, FL, USA) at each station, for a total of 18 transects and 540 small mammal live traps"
Sample: 1851
Contributor: John Alroy
Enterer: John Alroy
Created: 2015-12-21 18:39:10
Modified: 2015-12-21 18:39:10
Abundance distribution
14 species
1 singleton
total count 833
standardised richness: not computable
Fisher's α: 2.391
geometric series k: 0.6774
Hurlbert's PIE: 0.8647
Shannon's H: 2.1527
Good's u: 0.9988