The 2001 ALAS expeditions were carried out at the 1070m refuge site in Braulio Carrillo National Park.
Preliminary Reports: Formicidae
Habitat: the area of the refuge is montane wet forest on steep, highly dissected terrain, with abundant narrow ridge crests and streams in ravines. The forest is moderately tall and heavily laden with epiphytes. Although no rainfall data are available specifically for this site, similar Atlantic slope sites at this elevation have 6-7m annual rainfall.
Dates and participants: Three members of the ALAS staff (Danilo Brenes, Maylin Paniagua, Ronald Vargas) were present during all expeditions. The fourth ALAS staff member, Nelci Oconitrillo, was based in the ALAS lab in La Selva, where she received and processed samples and maintained communications with the field camp. The following expedition dates list visiting collaborators.
8-21 February: Valerie Behan-Pelletier (Acari), Marc Epstein (Lepidoptera), Lawrence Kirkendall (Coleoptera, Scolytidae/Platypodidae), John Longino (Hymenoptera, Formicidae), Angel Solis (Coleoptera, Scarabaeinae), Carlos Viquez (Araneae, Coleoptera).
9-22 March: Jens Prena (Coleoptera, Curculionidae), Ed Riley (Coleoptera, Chrysomelidae), Jadranka Rota (Lepidoptera), Mike Sharkey (Hymenoptera, Braconidae), Dave Wagner (Lepidoptera), Manuel Zumbado (Diptera).
9-22 April: John Brown and assistants (Lepidoptera), Don Davis and assisitants (Lepidoptera), Angel Solis (Coleoptera, Scarabaeinae).
Weather: It rained almost constantly for the February and April expeditions, and for a week of the March expedition. The March expedition had one week of clear weather.
Location and map:
The map of the site shows the Malaise trap locations (diamonds), the sites of the three Winkler transects (straight lines), and the two fixed sites for the light-traps (red squares). Thick blue lines are streams, thin wavy black line is main transect trail. The axes are in meters. Malaise trap 16 was immediately behind the refuge building. Lambert coordinate data for the Malaise trap locations are under Malaise samples.
The locality label we use for the refuge site and vicinity is:
COSTA RICA: Prov. Heredia:
16km SSE La Virgen, 1050-
1150m, 10¡16'N 84¡05'W