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The number of studies including different benthic organism groups based on the data from bibliometric search (Table 1) for macrophytes and benthos (reviews omitted). Altogether 32 species from 23 papers (21 papers on benthos and two papers on macrophytes). Subsurface-feeders included oligochaetes and amphipods Corophium volutator. “Other surface-feeders” were collector-feeders (insect larvae, crustaceans, snails) and predators (insect larvae, mites).
