Araguaia National Park (grasslands)
Basic information
Sample name: Araguaia National Park (grasslands)

Reference: A. N. R. Bezerra, A. P. Carmignotto, and F. H. G. Rodrigues. 2009. Small non-volant mammals of an ecotone region between the cerrado hotspot and the Amazonian rainforest, with comments on their taxonomy and distribution. Zoological Studies 48(6):861-874 [ER 956]
Country: Brazil
State: Tocantins

Coordinate: 10° 27' S, 50° 29' W
Basis of coordinate: stated in text
Geography comments: "on the northern portion of Bananal I[sland]... in the Araguaia River"
Habitat: tropical/subtropical savanna
Protection: national/state park
Substrate: ground surface
MAT: 26.0
MAP: 1670.0
Habitat comments: sites are in "grasslands"
"The climate is classified as Köppen’s Aw: Tropical chuvoso... with a moist summer and dry winter... with < 50 mm of monthly precipitation in June-Aug"
MAP 1750 to 2000 mm according to the text; climate data are for the Araguaia National Park and are from Miura et al. (2006, Remote Sensing of Environment)
Life forms: rodents, other small mammals
Sites: 4
Sampling methods: line transect, baited, pitfall traps, Sherman traps
Sample size: 142
Years: 1999
Seasons: wet or monsoon
Net or trap nights: 2315
Sampling comments: Each capture station was composed of 1 live-capture [Sherman] trap... placed in the soil or in the understory. The capture stations were established at 13 m intervals along linear transects that varied in length according to the size of the vegetation patch (with 30-50 capture stations). The bait was a mixture of peanut butter, sardines, banana, and maize flour... We also placed 25 capture stations with pitfall traps in 2 points surveyed: an open dry grassland formation and a semideciduous forest patch... with no drift fences between the buckets"
total of 715 Sherman trap-nights and 1600 pitfall trap-nights
Sample: 1442
Contributor: John Alroy
Enterer: John Alroy
Created: 2015-03-02 10:53:58
Modified: 2015-10-05 20:14:52
Abundance distribution
7 species
2 singletons
total count 142
extrapolated richness: 10.2
Fisher's α: 1.545
geometric series k: 0.4548
Hurlbert's PIE: 0.3484
Shannon's H: 0.7889
Good's u: 0.9859
Each square represents a species. Square sizes are proportional to counts.