Spatial distribution of nicotine concentrations in Berlin's surface waters and their potential sources.

Nicotine is a ubiquitous emergent pollutant that primarily enters the environment through inappropriate disposal of cigarette butts. In a 7-week monitoring program, we collected 56 water samples from 14 lakes, 9 ponds, 9 rivers, 8 canals, and 2 canalized brooks in Berlin. Nicotine was detected in all investigated surface waters.

Freshwater systems and ecosystem services: Challenges and chances for cross-fertilization of disciplines.

Freshwater ecosystems are among the most threatened in the world, while providing numerous essential ecosystem services (ES) to humans. Despite their importance, research on freshwater ecosystem services is limited. Here, we examine how freshwater studies could help to advance ES research and vice versa.