Instituto Biológico (pitfall traps)
Basic information
Sample name: Instituto Biológico (pitfall traps)

Reference: F. M. Ribeiro, N. Sibinel, G. Ciocheti, and A. E. C. Campos. 2012. Analysis of ant communities comparing two methods for sampling ants in an urban park in the city of São Paulo, Brazil. Sociobiology 59(1):971-984 [ER 2126]
Country: Brazil
State: São Paulo

Coordinate: 23° 35' S, 46° 38' W
Basis of coordinate: based on nearby landmark
Geography comments: "the 3 ha park of Instituto Biológico... in the city of São Paulo, the Vila Mariana neighborhood, 5 km away from downtown" (coordinate based on Vila Mariana)
Climate and habitat
Habitat: tropical/subtropical dry broadleaf forest
Altered habitat: inhabited area
Protection: unprotected
Substrate: ground surface
Habitat comments: no description of the original habitat, which is inferred from the climate of São Paulo
Life forms: ants
Sampling methods: line transect, pitfall traps
Sample size: 704
Years: 2005
Days: 2
Nets or traps: 72
Net or trap nights: 144
Trap spacing: 0.010
Sampling comments: "Data collection was conducted in April, September and October 2005. Two transects were designed to cover the largest area of the park. Along each transect 36 pitfall traps were placed, spaced 10 meters apart (N = 72)... The traps were laid in the soil and collected 48 hours later"
percentage data are given, and clearly imply that the sample size was 704
Sample: 2111
Contributor: John Alroy
Enterer: John Alroy
Created: 2016-06-17 20:51:22
Modified: 2020-01-14 16:31:54
Abundance distribution
28 species
5 singletons
total count 704
extrapolated richness: 36.5
Fisher's α: 5.831
geometric series k: 0.8235
Hurlbert's PIE: 0.8667
Shannon's H: 2.3701
Good's u: 0.9929
Each square represents a species. Square sizes are proportional to counts.