The complex structures of trees and branches are difficult to sample with traditional macrofauna nets. Therefore, we developed the macrozoobenthos suction sampler. With its small suction nozzle, even previously hard to reach locations can now be sampled. The Dutch authorities (Rijkswaterstaat) have even recognised the macrozoobenthos suction sampler as the standard sampling method for these situations.
The device works like a vacuum cleaner. Organisms are effectively sucked into the sampler. Combined with diving and snorkeling, we can sample entire underwater structures. We can also search deep sandy bottoms for the rare yellow-legged dragonfly and European river lamprey.