Morro do Elefante (pitfall traps)
Basic information
Sample name: Morro do Elefante (pitfall traps)
Reference: D. O. de Lima, B. O. Azambuja, V. L. Camilotti, and N. C. Câceres. 2010. Small mammal community structure and microhabitat use in the austral boundary of the Atlantic Forest, Brazil. Zoologia (Curitiba) 27(1):99-105 [ER 1635]
Geography
Country: Brazil
State: Rio Grande do Sul
Coordinate: 29° 40' S, 53° 43' W
Coordinate basis: stated in text
Geography comments: "on the hillside of the Serra Geral hills, municipality of Santa Maria"
trapping grids were at 260 and 460 m elevation
trapping grids were at 260 and 460 m elevation
Environment
Habitat: tropical/subtropical dry broadleaf forest
Substrate: ground surface
MAT: 19.9
WMT: 25.9
CMT: 14.1
MAP: 1520.0
Habitat comments: "a fragment of Deciduous Forest (about 400 ha) connected to others forest areas and composed by primary and secondary forests... 2 km away from an urban area and... used by the local population for trekking... The local climate is markedly seasonal, Cfa type, humid and subtropical, according to the Köppen classification... the annual rainfall is well dis- tributed throughout the year"
Methods
Life forms: rodents
Sites: 2
Site area: 2.7
Sampling methods: quadrat,baited,pitfall traps
Sample size: 70 individuals
Years: 2005
Days: 28
Nets or traps: 60
Net or trap nights: 1680
Sampling comments: "Two trapping grids (1.35 ha each)... Each grid was sampled four times (March, May, July and October 2005) during seven consecutive nights each month. Inside each grid 30 pitfall traps and 40 wire-mesh live traps were placed... the traps in each grid were arranged on seven transect lines – four transect lines with live traps interspersed by three transect lines with pitfalls. Each transect, with pitfalls or live traps, had 10 traps spaced out 10 m from each other... The distance between the transect lines was 25 m. Traps were alternately baited with bacon or pumpkin with sardine"
total of 3920 trap-nights of which 30/(30 + 40) x 3920 = 1680 pertained to pitfall traps
total of 3920 trap-nights of which 30/(30 + 40) x 3920 = 1680 pertained to pitfall traps
Metadata
Sample number: 1843
Contributor: John Alroy
Enterer: John Alroy
Created: 2015-12-19 11:42:50
Modified: 2015-12-19 00:42:50
Abundance distribution
6 species
2 singletons
total count 70
geometric series index: 10.1
Fisher's α: 1.571
geometric series k: 0.4884
Hurlbert's PIE: 0.6273
Shannon's H: 1.2236
Good's u: 0.9714
Each square represents a species. Square sizes are proportional to counts.
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Register
Akodon montensis | 36 | 35.7 g herbivore-invertivore |
Oligoryzomys nigripes | 21 | 17.7 g herbivore |
Sooretamys angouya | 5 | 124 g |
Thaptomys nigrita | 6 | 21.2 g |
Juliomys sp. | 1 | |
Mus musculus | 1 | 17.6 g |