Figure 3.

Share of publications on ecotoxicity of Ln based on exposure time: (i) only acute (<14 days) toxicity data, (ii) studies including long-term (≥14 days) experiments, (iii) monitoring studies where data were collected from natural populations, and (iv) reviews. The publications are given separately for different organism groups (see Table 1) from left to right: microorganims, phytoplankton, macrophytes, zooplankton, nekton, and benthos. The number of papers within each category is given inside or left to the respective column.