Vicente Guerrero (PE)
Basic information
Sample name: Vicente Guerrero (PE)

Reference: L. Arellano, J. L. León-Cortés, and G. Halffter. 2008. Response of dung beetle assemblages to landscape structure in remnant natural and modified habitats in southern Mexico. Insect Conservation and Diversity 1:253-262 [ER 350]
Country: Mexico
State: Chiapas

Coordinate: 16° 51' 23" N, 93° 12' 6" W
Basis of coordinate: stated in text
Geography comments: coordinate is the average of ranges given in text
elevation range 767 to 1088 m
Climate and habitat
Habitat: tropical/subtropical dry broadleaf forest
Altered habitat: pasture
Substrate: ground surface
MAP: 1200.0
Habitat comments: "tropical dry forest, fragments of secondary forest and fallow land in various stages of succession" and specifically "pasture adjacent to a cattle stable"
MAP stated in text; CMT and WMT unclear because the nearest climate station (76741, Coatzacoalcos) is at sea level
Life forms: scarab beetles
Sites: 1
Site length: 250.000
Sampling methods: line transect, baited, pitfall traps
Sample size: 200
Years: 2004, 2005
Days: 20
Seasons: wet or monsoon
Nets or traps: 6
Net or trap nights: 120
Sampling comments: one transect with six human excrement-, cow dung-, or squid-baited pitfall traps separated by 25 m (i.e., a total transect length of 125 m) that were sampled on 20 occasions "during two rainy seasons: from May to October 2004, and from May to August 2005"
there is a conflict in the text, with "bait replaced every 48 h" but traps supposedly "visited" for 6 h on each occasion; I assume that 20 visits means 20 sampling days, period
Sample: 1275
Contributor: John Alroy
Enterer: John Alroy
Created: 2015-02-18 12:36:07
Modified: 2020-05-29 20:26:47
Abundance distribution
9 species
0 singletons
total count 200
standardised richness: 9.0
Fisher's α: 1.937
geometric series k: 0.6687
Hurlbert's PIE: 0.8426
Shannon's H: 1.9765
Good's u: 1.0000