The monitoring systems generate alarms if certain threshold values are exceeded. These thresholds are normally static limits based on technical standards or based on experience during the ...

Bat monitoring Bats are monitored through a variety of methods. In the winter, hibernating bats are counted in their hibernation sites, and in the summer, information on the distribution of bats can ...

Ecologists and conservation researchers have a long history of using sound to study wildlife, from identifying birdsong by ear in the field, to surveying bats with handheld ... known as passive ...