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Contributions of microbial biofilms to ecosystem processes in stream mesocosms

Author

Listed:
  • Tom J. Battin

    (IECB, University of Vienna)

  • Louis A. Kaplan

    (Stroud Water Research Center)

  • J. Denis Newbold

    (Stroud Water Research Center)

  • Claude M. E. Hansen

    (University of Innsbruck)

Abstract

In many aquatic ecosystems, most microbes live in matrix-enclosed biofilms1,2,3 and contribute substantially to energy flow and nutrient cycling. Little is known, however, about the coupling of structure and dynamics of these biofilms to ecosystem function2. Here we show that microbial biofilms changed the physical and chemical microhabitat and contributed to ecosystem processes in 30-m-long stream mesocosms. Biofilm growth increased hydrodynamic transient storage—streamwater detained in quiescent zones, which is a major physical template for ecological processes in streams4,5—by 300% and the retention of suspended particles by 120%. In addition, by enhancing the relative uptake of organic molecules of lower bioavailability, the interplay of biofilm microarchitecture and mass transfer changed their downstream linkage. As living zones of transient storage, biofilms bring hydrodynamic retention and biochemical processing into close spatial proximity and influence biogeochemical processes and patterns in streams. Thus, biofilms are highly efficient and successful ecological communities that may also contribute to the influence that headwater streams have on rivers, estuaries and even oceans6,7 through longitudinal linkages of local biogeochemical and hydrodynamic processes.

Suggested Citation

  • Tom J. Battin & Louis A. Kaplan & J. Denis Newbold & Claude M. E. Hansen, 2003. "Contributions of microbial biofilms to ecosystem processes in stream mesocosms," Nature, Nature, vol. 426(6965), pages 439-442, November.
  • Handle: RePEc:nat:nature:v:426:y:2003:i:6965:d:10.1038_nature02152
    DOI: 10.1038/nature02152
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    Cited by:

    1. David M Costello & Konrad J Kulacki & Mary E McCarthy & Scott D Tiegs & Bradley J Cardinale, 2018. "Ranking stressor impacts on periphyton structure and function with mesocosm experiments and environmental-change forecasts," PLOS ONE, Public Library of Science, vol. 13(9), pages 1-18, September.
    2. Hannes Peter & Irene Ylla & Cristian Gudasz & Anna M Romaní & Sergi Sabater & Lars J Tranvik, 2011. "Multifunctionality and Diversity in Bacterial Biofilms," PLOS ONE, Public Library of Science, vol. 6(8), pages 1-8, August.
    3. Susheel Bhanu Busi & Massimo Bourquin & Stilianos Fodelianakis & Grégoire Michoud & Tyler J. Kohler & Hannes Peter & Paraskevi Pramateftaki & Michail Styllas & Matteo Tolosano & Vincent Staercke & Mar, 2022. "Genomic and metabolic adaptations of biofilms to ecological windows of opportunity in glacier-fed streams," Nature Communications, Nature, vol. 13(1), pages 1-15, December.
    4. Lingzhan Miao & Song Guo & Zhilin Liu & Songqi Liu & Guoxiang You & Hao Qu & Jun Hou, 2019. "Effects of Nanoplastics on Freshwater Biofilm Microbial Metabolic Functions as Determined by BIOLOG ECO Microplates," IJERPH, MDPI, vol. 16(23), pages 1-12, November.

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