Fig. 2From: An approach for finding causal relations in environmental systems: with an application to understand drivers of a toxic algal bloomMap of the study area for demonstrating the proposed approach with geographic features and monitoring sites mentioned in the text. Inset in the lower left corner of the map shows approximate location of the study area within Europe. Inset in the upper right corner of the map shows a photograph (picture taken by the author) of the Odra riverscape between Eisenhüttenstadt and FrankfurtBack to article page