Rio Negro farm
Basic information
Sample name: Rio Negro farm

Reference: C. S. de Andreazzi, V. Rademaker, R. Gentile, H. M. Herrera, A. M. Jansen, and P. S. D'Andrea. 2011. Population ecology of small rodents and marsupials in a semi-deciduous tropical forest of the southeast Pantanal, Brazil. Zoologia 28(6):762-770 [ER 1665]
Country: Brazil
State: Mato Grosso do Sul

Coordinate: 19° 52' 30" S, 56° 22' 30" W
Basis of coordinate: stated in text as range
Geography comments: "in the southeast of the Nhecolândia region of the Brazilian Pantanal"
coordinate is the midpoint of ranges stated in the text
Climate and habitat
Habitat: tropical/subtropical dry broadleaf forest
Substrate: ground surface
MAT: 22.0
MAP: 975.0
Habitat comments: "a 7700 ha private reserve of native vegetation... Trapping was conducted in the 'Cordilheiras', which are sinuous remains of paleo-levees several kilometers in length about 100 m wide, reaching 1-2 m above the surrounding bodies of water and seasonally inundated plains. These elevations are not subject to flooding and are covered by dense, semi-deciduous forest vegetation... The climate is sub-humid tropical, characterized by dry winters and rainy summers"
climate data are for "the lakes of Pantanal" and are from Furquim et al. (2008, Clays and Clay Minerals): MAP 850 to 1100 mm
Life forms: rodents, other small mammals
Sampling methods: line transect, baited, Sherman traps, Tomahawk traps
Sample size: 615
Years: 2003, 2004
Days: 49
Nets or traps: 440
Net or trap nights: 21560
Sampling comments: "Capture-mark-recapture sessions were undertaken for seven consecutive nights on four plots during 2003 and 2004. In plots 1 and 2, trapping sessions occurred every three months. In plots 3 and 4, traps were placed every three months in 2003 and every six months in 2004. Each plot consisted of four line transects, three inside the forest and one on the forest edge. In each plot, transects were randomly marked, respecting a distance of 200 m apart from each other. The distance between plots was 2 km. Each transect had 10 trapping stations 20 m apart. Two traps were placed at each station next to each other, one Tomahawk® (model 201, 40.6 x 12.7 x 12.7 cm) and one Sherman® (model XLK 7.6 x 9.5 x 30.5 cm). In the forest transects, one additional trap was placed in a tree at each station, a Tomahawk® trap for odd-numbered stations and a Sherman® trap for even-numbered stations. Traps were baited with a mixture of banana, peanut butter, oatmeal and bacon and checked daily every morning."
Sample: 1856
Contributor: John Alroy
Enterer: John Alroy
Created: 2015-12-24 20:05:31
Modified: 2015-12-24 20:05:31
Abundance distribution
6 species
0 singletons
total count 615
extrapolated richness: 6.0
Fisher's α: 0.923
geometric series k: 0.4931
Hurlbert's PIE: 0.6254
Shannon's H: 1.2643
Good's u: 1.0000
Each square represents a species. Square sizes are proportional to counts.