Adaptations of an Emergence Trap for Use in Tropical Streams

✍ Scribed by Hendrik Freitag

• Book ID: 102281578
• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 216 KB
• Volume: 89
• Category: Article
• ISSN: 1434-2944
• DOI: 10.1002/iroh.200310709

✦ Synopsis

Abstract

An emergence trap based on the MPI Schlitz model was designed for use in the tropics and it was tested over one year in Palawan, the Philippines. Instructions for construction and use are given here. Only commonly available materials were used, except for the collection assembly made of UV‐light permeable acrylic glass. Heavy and bulky assemblies were avoided to enable easy transportation in the field. A special modification allows a fast and easy replacement of the screen when damaged by flooding, as is often required when traps are used downstream of headwaters. This type of trap also allows sampling of a wide littoral strip. Problems concerning the use of emergence traps in the humid tropics are discussed based on experience at different longitudinal stream sections in Palawan. The results presented here suggest that this trap should be used especially for qualitative or semi‐quantitative approaches. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)