Vangmethodes en verzamelen van echolocatiegeluid van Microchiroptera in tropisch regenwoud

Auteur

Lieshout, S. van

Jaar

2007

Uitgever

Hogeschool InHolland Delft / Adviesbureau E.C.O. Logisch

Prijs

€ 39,50

Samenvatting

Inventorying Microchiroptera (bats) by means of ultrasonic sounds is a commonly accepted method in Europe and America. Microchiroptera use these ultrasonic sounds for hunting and to orient itself in obscurity. By means of a bat detector, the ultrasonic sounds which bats expel become reduced to audible tones for people. By analyzing the consonance, the tempo and the frequency (KHz) one can stipulate which species it concerns and (in some cases) which behavior this individual shows. For most of the Central-African species these variables are not known. The overall objective of the project is making Central-African bats identifiable by their ultrasonic sounds.

This component of the project includes mainly the methods for catching Microchiroptera and collecting the ultrasonic calls. The most used methods to capture bats are mist nets and harp falls. Beside these general methods, alternative manners have been selected; the tunnel trap exists from several net parts which together form a closable space. Eventually, a first step towards non-invasive inventories of Central-African bats is made.