Monthly salinity in the period 1989–1992 in the North Sea canal at km 2.5 (municipality of Velsen). At this locality only Mytilopsis leucophaeata cochleata was found.

 
 
  Part of: van der Gaag M, van der Velde G, Leuven RSEW (2024) Matching field-based ranges in brackish water gradients with experimentally derived salinity tolerances of Conrad’s false mussel (Mytilopsis leucophaeata cochleata) and zebra mussel (Dreissena polymorpha). Aquatic Invasions 19(2): 169-190. https://doi.org/10.3391/ai.2024.19.2.124566