Main | Introduction | Location and Methods | Results | References | Acknowledgements

Location:

This study was conducted in the vicinity of Mastatal, a small town located in the San Jose province of Costa Rica. All three rivers were within hiking distance of the town of Mastatal. Rancho Mastatal, a wonderful sustainable living and education center that was used as the base of operations and source of comfort. The three rivers where samples were taken were the Chirez, Quebrada Grande, and the Rio Negro.

Chirez Quebrada Grande

Rio Negro

Methods:

Each site was sampled two times; once in the morning and once in the afternoon. Sites were sample along a 25m transect, disregarding river width, by swimming with snorkeling gear from downstream to upstream. In this way, fish were directly observed. Each sample was taken over a 30 minute period. Once the sampling time was completed, results were recorded immediately by writing fish descriptions of each of the fish types seen.

Main | Introduction | Location and Methods | Results | References | Acknowledgements