Fazenda Lago Verde
Basic information
Sample name: Fazenda Lago Verde

Reference: R. G. Rocha, E. Ferreira, Y. L. R. Leite, C. Fonseca, and L. P. Costa. 2011. Small mammals in the diet of Barn owls, Tyto alba (Aves: Strigiformes) along the mid-Araguaia River in central Brazil. Zoologia 28(6):709-716 [ER 1551]
Country: Brazil
State: Tocantins

Coordinate: 10° 48' S, 49° 37' W
Basis of coordinate: based on nearby landmark
Geography comments: "in the mid-Araguaia River region of central Brazil" in the "municipality of Lagoa da Confusão" (coordinate based on Lagoa da Confusão)
Climate and habitat
Habitat: tropical/subtropical savanna
Substrate: ground surface
WMT: 26.4
CMT: 25.1
MAP: 1755.0
Habitat comments: "an 8, 000 ha private ranch managed for artificially irrigated crop production (rice, maize, bean and soybean). About 70% of its area consists of pristine Cerrado sensu lato physiognomies, ranging from 'cerradão' (dense savanna woodland), to open scrublands and grasslands" and sampling was "mainly within forested areas along the mid-Araguaia riverbanks"
climate data are for the middle Araguaia River basin and are from Sawakuchi et al. (2013, Open Journal of Forestry)
Life forms: rodents, other small mammals
Sampling methods: line transect, drift fences, pitfall traps, Sherman traps, Tomahawk traps
Sample size: 116
Years: 2007, 2008
Net or trap nights: 4424
Sampling comments: three sampling points, with each consisting of "a transect of sixteen 30 L pitfalls with drift fences; a transect with ten 60 L pitfalls with drift fences (except at FLV, where burying large pitfalls in waterlogged soil was unfeasible); a mixed transect with 22 Sherman traps (45 x 12.5 x 14.5 cm) and ten Tomahawk traps (45 x 21 x 21 cm) placed on the ground; and a mixed transect with four Sherman traps and four Tomahawk traps placed in the understory... Four additional transects with 22 Sherman and ten Tomahawk traps were established near irrigation channels and in the Cerrado sensu strictu matrix at FLV, which were sampled only during one seven-night period"
Sample: 1806
Contributor: John Alroy
Enterer: John Alroy
Created: 2015-11-29 17:23:50
Modified: 2021-07-17 19:23:56
Abundance distribution
12 species
2 singletons
total count 116
extrapolated richness: 15.4
Fisher's α: 3.362
geometric series k: 0.7151
Hurlbert's PIE: 0.8054
Shannon's H: 1.9647
Good's u: 0.9828
Each square represents a species. Square sizes are proportional to counts.