ALAS Pitfall Collections, 2004 Expeditions
Transects of 25 baited pitfall traps were established, with about 5m between traps. Transects were placed along trails near the refuge building. Plastic drinking cups were embedded in the ground, flush with the ground surface, and the bait was perched above the cup. Cups were 7cm wide at the top and 9.5cm deep. Human dung was used as bait. Traps were maintained and harvested daily over a period of 3 days. Samples were pooled across days and pitfall traps to obtain one sample per transect. Samples were stored in whirlpac bags of 95% ethanol. The samples are listed below.
The data fields, in order, are:
Collection code: a unique code for a collection. The "03" indicates that it is from the 300m site, the "TF" indicates it is a pitfall sample, the following two numbers are the transect number.
Collection date: day the first sample was collected from the field, in format day-month-year.
End collection date: date of third day's collection, in format day-month-year.
Collector: person placing transect and harvesting pitfalls.
03/TF/01 17-Feb-2004 19-Feb-2004 D.Brenes
03/TF/02 15-Feb-2004 17-Feb-2004 E. Lopez P
03/TF/03 13-Mar-2004 15-Mar-2004 D.Brenes
03/TF/04 11-Mar-2004 13-Mar-2004 R. Vargas C.
03/TF/05 10-Apr-2004 12-Apr-2004 R. Vargas C.
03/TF/06 8-Apr-2004 10-Apr-2004 E. Lopez P
The six transects were located as follows:
03/TF/01 Transecto colocado de trampra M/19 hacia M/17.
03/TF/02 Transecto colocado del refugio Cantarrana por el sendero hacia Cascante (500 m).
03/TF/03 Transecto de foso colocado entre trampa M/13 y M/11
03/TF/04 Transecto frente refugio hacia el sendero entre M/14 y M/15.
Inicia en bosque primario y finaliza en bosque secundario, pendientes de colinas.
03/TF/05 Transecto entre M/14 y M/16. Bosque primario, cima de colina.
03/TF/06 En la cima de la pendiente a mano derecha de Quebrada toma agua.