Grassland near Santa Maria
Basic information
Sample name: Grassland near Santa Maria
Reference: G. R. Winck, T. G. dos Santos, and S. Z. Cechin. 2007. Snake assemblage in a disturbed grassland environment in Rio Grande do Sul State, southern Brazil: population fluctuations of Liophis poecilogyrus and Pseudablabes agassizii. Acta Zoologica Fennici 44:321-332 [ER 177]
Geography
Country: Brazil
State: Rio Grande do Sul
Coordinate: 30° 44' S, 54° 45' W
Latlng basis: stated in text
Geography comments: coordinate given in text
Environment
Habitat: temperate savanna
Substrate: ground surface
Disturbance: agriculture, grazing
WMT: 19.2
CMT: 17.9
MAP: 1675.0
Habitat comments: grassland used for cattle breeding plus corn and soybean cultivation
MAP stated in text as "1500 to 1750 mm"; CMT and WMT based on Maragno and Cechin (2009, Iheringia)
MAP stated in text as "1500 to 1750 mm"; CMT and WMT based on Maragno and Cechin (2009, Iheringia)
Methods
Life forms: snakes
Sampling methods: drift fences, pitfall traps
Sample size: 272 individuals
Years: 2001 - 2004
Net or trap nights: 0
Basal area status: not applicable
Sampling comments: pitfall traps with drift fences
Metadata
Sample no: 390
Contributor no: John Alroy
Enterer: John Alroy
Created: 2014-03-14 13:28:07
Modified: 2015-07-07 06:58:08
Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
20 species
5 singletons
total count 272
geometric series index: 31.9
Fisher's α: 4.976
geometric series k: 0.7946
Hurlbert's PIE: 0.8607
Shannon's H: 2.3258
Good's u: 0.9817
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