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Summary: 23. Cheng, X. & Kaplan, L. A. Improved analysis of dissolved carbohydrates in stream water with HPLC-
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Supplementary Information accompanies the paper on www.nature.com/nature.
Acknowledgements We thank T. Georgian for insights regarding experimental design and the
influence of biofilms on particle deposition; S. Roberts, M. Gentile and X. Cheng for technical
assistance; K. Czymmek for CLSM support; and A. I. Packman, R. Sommaruga, G. Singer and
J. Blaine for critically reading the manuscript. This work was supported by grants from the
Austrian FWF (T.J.B.), the US NSF (L.A.K. and J.D.N.) and the Pennswood Fund for
Environmental Research (L.A.K. and J.D.N.).
Competing interests statement The authors declare that they have no competing financial
interests.
Correspondence and requests for materials should be addressed to T.J.B.
(tomba@pflaphy.pph.univie.ac.at).
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Balanced inhibition underlies
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