El Castillo (border zone)
Basic information
Sample name: El Castillo (border zone)

Reference: J. Herrera-Vásquez, A. Zúñiga Saborío, and C. M. Porras Cruz. 2008. Butterflies diversity in a tropical rainforest gradient of Arenal, Costa Rica. Brenesia 70:61-64 [ER 2264]
Country: Costa Rica
State: Alajuela

Coordinate: 10° 24' 49" N, 84° 45' 30" W
Basis of coordinate: stated in text as range
Geography comments: "in El Castillo, Peñas Blancas, San Ramón, Alajuela"
Climate and habitat
Habitat: tropical/subtropical moist broadleaf forest
Substrate: ground surface
Disturbance: grazing
MAT: 27.0
MAP: 1745.0
Habitat comments: "between the Tropical moist forest and premontane moist forest life zones" and specifically on the border between primary forest and grassland (meaning pasture)
climate data are for Peñas Blancas and are from Moya and Calvo-Alvarado (2012, Annals of Forest Science)
Life forms: butterflies
Sites: 1
Site length: 550.000
Site width: 15.000
Sampling methods: belt transect, butterfly nets
Sample size: 59
Years: 2006, 2007
Sampling comments: "The investigation was conducted... during August 2006 - January 2007... There were selected three consecutive transects of 550 m long and 15 m wide each. The first transect was placed in a primary forest zone, the second one in a border zone (Taking 75 m in and 75 out of the border middle line) and the third one was located in a grassland zone. Two samples were taken one month apart. Butterflies were collected using hand nets... The sampling effort was of eight hours per habitat for a total of 42 hours by sampling month. Specimens were identified using a single code and released in the same capture place, only the rare species (when necessary) were preserved"
Sample: 2357
Contributor: John Alroy
Enterer: John Alroy
Created: 2016-10-29 20:52:57
Modified: 2016-12-13 11:00:10
Abundance distribution
22 species
9 singletons
total count 59
extrapolated richness: 42.9
Fisher's α: 12.720
geometric series k: 0.8921
Hurlbert's PIE: 0.9161
Shannon's H: 2.7825
Good's u: 0.8503
Each square represents a species. Square sizes are proportional to counts.