Towards European automatic bioaerosol monitoring: Comparison of 9 automatic pollen observational instruments with classic Hirst-type traps

José M. Maya-Manzano; Fiona Tummon; Reto Abt; Nathan Allan; Landon Bunderson; Bernard Clot; Benoît Crouzy; Gintautas Daunys; Sophie Erb; Mónica Gonzalez-Alonso; Elias Graf; Łukasz Grewling; Jörg Haus; Evgeny Kadantsev; Shigeto Kawashima; Moises Martinez-Bracero; Predrag Matavulj; Sophie Mills; Erny Niederberger; Gian Lieberherr; Richard W. Lucas; David J. O'Connor; Jose Oteros; Julia Palamarchuk; Francis D. Pope; Jesus Rojo; Ingrida Šaulienė; Stefan Schäfer; Carsten B. Schmidt-Weber; Martin Schnitzler; Branko Šikoparija; Carsten A. Skjøth; Mikhail Sofiev; Tom Stemmler; Marina Triviño; Yanick Zeder; Jeroen Buters