To monitor of a white stork population in Valladolid (Spain) in the vicinity of cellular phone base stations with the objective of detecting possible effects.
60 nests were monitored. Nests were separated in two categories: Nests located within 200 m of one or several antennae and nests located furhter than 300 m.
Modulation type: pulsed
Exposure duration: continuous during all phases of breeding
|Exposure duration||continuous during all phases of breeding|
|electric field strength||2.36 V/m||mean||measured||-||nests within 200 m|
|electric field strength||0.53 V/m||mean||measured||-||nests farther than 300 m|
The total productivity in the nests located within 200 meters of antennae, was 0.86 ± 0.16 and the partial productivity was 1.44 ± 0.16. For those located further than 300 m, the total productivity was practically doubled, with an average of 1.6 ± 0.14. Partial productivity was 1.65 ± 0.13.
Twelve nests (40%) located within 200 m of antennae never had chicks, while only one located further than 300 m had no chicks.