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Sampling effort of the water quality network (number of samples per year). |
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| Part of: Vannevel R, Brosens D, De Cooman W, Gabriels W, Lavens F, Mertens J, Vervaeke B (2018) The inland water macro-invertebrate occurrences in Flanders, Belgium. ZooKeys 759: 117-136. https://doi.org/10.3897/zookeys.759.24810 |