La Cañada
Basic information
Sample name: La Cañada

Reference: M. Rocha-Ortega and G. Castaño-Meneses. 2015. Effects of urbanization on the diversity of ant assemblages in tropical dry forests, Mexico. Urban Ecosystems 18:1373-1388 [ER 2260]
Country: Mexico
State: Querétaro

Coordinate: 20° 37' N, 100° 28' W
Basis of coordinate: stated in text
Geography comments: in "Santiago de Querétaro, Querétaro"
Climate and habitat
Habitat: tropical/subtropical dry broadleaf forest
Altered habitat: fragment
Substrate: ground surface
Disturbance: invasive animals, invasive plants
Habitat comments: "Secondary forest fragment" of unstated size within a matrix of "Pastures and remnants of tropical dry forest"; perturbation is "High, without protection and with frequent changes of use of land, since the founding of the city"
Life forms: ants
Sampling methods: line transect, baited, pitfall traps, other traps, hand capture
Sample size: 188
Years: 2004, 2005
Sampling comments: "samples were collected two times a month, from December 2004 to December 2005, along a linear transect of 100 m. For each collection we used traps baited with protein (tuna) or carbohydrates (peanut butter) and pitfall traps, in addition to leaf litter samples and manual collections. In total, 24 samples per site were collected in a year... We used 16 baited traps in 4 vertical strata for each site: 4 in soil (2 traps baited with tuna and two baited with peanut butter), 8 in the scrub layer (4 baited with tuna and 4 with peanut butter) and 4 in the canopy layer (2 baited with tuna and two with peanut butter). The baited traps were installed in the morning and left for 24 h. A total of 1 536 baited traps were used in the study (16 traps×4 sites×24 survey samples). The pitfall traps consisted of plastic 250 ml cups filled with antifreeze placed at ground level for 15 days. Four pitfall traps were used for each site, for a total of 384 traps (4 traps×4 sites×24 survey samples). In addition, every 15 days we collected 4 leaf litter samples (1 m2) per site, which were subsequently placed in Berlese funnels (Martin 1977), resulting in a total of 480 litter samples. Finally, we performed manual collections of 20 min durations every 15 days, for a total of 32 h of observation"
Sample: 2336
Contributor: John Alroy
Enterer: John Alroy
Created: 2016-10-26 19:24:14
Modified: 2016-10-26 19:24:14
Abundance distribution
21 species
6 singletons
total count 188
extrapolated richness: 30.2
Fisher's α: 6.057
geometric series k: 0.8316
Hurlbert's PIE: 0.8881
Shannon's H: 2.5033
Good's u: 0.9681
Each square represents a species. Square sizes are proportional to counts.