1. National Institute of Aquatic Sciences Technical University of Denmark Silkeborg Denmark
2. Institute for Geoscience Aarhus University Aarhus Denmark
3. Department of Earth and Planetary Sciences University of California Davis Davis California USA
4. Department of Biology Aarhus University Aarhus Denmark
5. Fisheries Ecology Division NOAA Fisheries, Southwest Fisheries Science Center Santa Cruz California USA
6. Center for Watershed Sciences University of California Davis Davis California USA
7. Norwegian Institute for Nature Research Trondheim Norway
8. Interdisciplinary Center for Plasma Mass Spectrometry University of California Davis Davis California USA