Phenomena in the environment occur on a wide range of spatial and temporal scales. This puts certain demands on the ways we perform research and model systems. Transverse mixing in rivers and internal loading of lakes with phosphates are examples illustrating certain features. Time lags in both ecosystems and in society in combination tend to postpone the solution of environmental problems. Eutrophication serves as an example.
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Lambertus Lijklema; Dimensions and scales. Water Sci Technol 1 February 1998; 37 (3): 1–7. doi: https://doi.org/10.2166/wst.1998.0162
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