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Predator-induced reduction of freshwater carbon dioxide emissions

Abstract

Predators can influence the exchange of carbon dioxide between ecosystems and the atmosphere by altering ecosystem processes such as decomposition and primary production, according to food web theory1,2. Empirical knowledge of such an effect in freshwater systems is limited, but it has been suggested that predators in odd-numbered food chains suppress freshwater carbon dioxide emissions, and predators in even-numbered food chains enhance emissions2,3. Here, we report experiments in three-tier food chains in experimental ponds, streams and bromeliads in Canada and Costa Rica in the presence or absence of fish (Gasterosteus aculeatus) and invertebrate (Hesperoperla pacifica and Mecistogaster modesta) predators. We monitored carbon dioxide fluxes along with prey and primary producer biomass. We found substantially reduced carbon dioxide emissions in the presence of predators in all systems, despite differences in predator type, hydrology, climatic region, ecological zone and level of in situ primary production. We also observed lower amounts of prey biomass and higher amounts of algal and detrital biomass in the presence of predators. We conclude that predators have the potential to markedly influence carbon dioxide dynamics in freshwater systems.

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Figure 1: Predicted effects (depicted by + or −) of predators on community composition, ecosystem processes and carbon flux to the atmosphere.
Figure 2: Demonstrated effect sizes of predators on prey, primary producers and CO2 dynamics of ponds, streams and bromeliads.
Figure 3: Effects of predator manipulations on mean (±95% confidence intervals) CO2 flux of ponds, streams and bromeliads.
Figure 4: Comparison of trophic cascade strength from the present study with natural ecosystems.

References

  1. Estes, J. A. et al. Trophic downgrading of planet Earth. Science 333, 301–306 (2011).

    Article  Google Scholar 

  2. Schindler, D. E., Carpenter, S. R., Cole, J. J., Kitchell, J. F. & Pace, M. L. Influence of food web structure on carbon exchange between lakes and the atmosphere. Science 277, 248–251 (1997).

    Article  Google Scholar 

  3. Flanagan, K. M., McCauley, E. & Wrona, F. Freshwater food webs control carbon dioxide saturation through sedimentation. Glob. Change Biol. 12, 644–651 (2006).

    Article  Google Scholar 

  4. Burnosky, A. D. et al. Has the Earth’s sixth mass extinction arrived? Nature 471, 51–57 (2011).

    Article  Google Scholar 

  5. Duffy, J. E. Biodiversity loss, trophic skew and ecosystem functioning. Ecol. Lett. 6, 680–687 (2003).

    Article  Google Scholar 

  6. Brooks, J. L. & Dodson, S. I. Predation, body size, and composition of plankton. Science 150, 28–35 (1965).

    Article  Google Scholar 

  7. Ripple, W. J. & Beschta, R. L. Wolf reintroduction, predation risk, and cottonwood recovery in Yellowstone National Park. For. Ecol. Manage. 184, 299–313 (2004).

    Article  Google Scholar 

  8. Allen, A. P. et al. Linking the global carbon cycle to individual metabolism. Funct. Ecol. 19, 202–213 (2005).

    Article  Google Scholar 

  9. Wardle, D. A., Bellingham, D. J., Mulder, C. P. H. & Fukami, T. Promotion of ecosystem carbon sequestration by invasive predators. Biol Lett. 3, 479–482 (2005).

    Article  Google Scholar 

  10. Staddon, P., Lindo, Z., Crittenden, P., Gilbert, F. & Gonzalez, A. Connectivity, non-random extinction and ecosystem function in experimental metacommunities. Ecol. Lett. 13, 543–552 (2010).

    Article  Google Scholar 

  11. Hawlena, D., Strickland, M. S. & Schmitz, Fear of predation slows plant-litter decomposition. Science 336, 1434–1438 (2012).

    Article  Google Scholar 

  12. Shurin, J. B. et al. Across-ecosystem comparison of the strength of trophic cascades. Ecol. Lett. 5, 785–791 (2002).

    Article  Google Scholar 

  13. Cole, J. J. et al. Plumbing the global carbon cycle: Integrating inland waters into the terrestrial carbon budget. Ecosystems 10, 171–184 (2007).

    Article  Google Scholar 

  14. Le Quere, C. et al. Trends in the source and sinks in carbon dioxide. Nature Geosci. 2, 831–836 (2009).

    Article  Google Scholar 

  15. Martinson, G. O. et al. Methane emissions from tank bromeliads in neotropical forests. Nature Geosci. 3, 766–769 (2010).

    Article  Google Scholar 

  16. Butman, D. & Raymond, P. A. Significant efflux of carbon dioxide from streams and rivers in the United States. Nature Geosci. 4, 839–842 (2011).

    Article  Google Scholar 

  17. Abnizova, A., Siemens, J., Langer, M. & Boike, J. Small ponds with impact: The relevance of ponds and lakes in permafrost landscapes. Glob. Biogeochem. Cycles 26, GB2041.

  18. Kratina, P., Greig, H. S., Thompson, P. L., Carvalho-Pereira, T. S. & Shurin, J. B. Warming modifies trophic cascades and eutrophication in experimental freshwater communities. Ecology 93, 1421–1430 (2012).

    Article  Google Scholar 

  19. Borer, E. T. et al. What determines the strength of a trophic cascade? Ecology 86, 528–537 (2005).

    Article  Google Scholar 

  20. Schmitz, O. J. Effects of predator hunting mode on grassland ecosystem function. Science 319, 952–954 (2008).

    Article  Google Scholar 

  21. Vanni, M. J. Nutrient cycling by animals in freshwater ecosystems. Annu. Rev. Ecol. Syst. 33, 341–370 (2002).

    Article  Google Scholar 

  22. Greig, H. S. et al. Warming, eutrophication, and predator loss amplify subsidies between aquatic and terrestrial ecosystems. Glob. Change Biol. 18, 504–514 (2012).

    Article  Google Scholar 

  23. Lecerf, A. & Richardson, J. S. Assessing the functional importance of large-bodied invertebrates in experimental headwater streams. Oikos 120, 950–960 (2011).

    Article  Google Scholar 

  24. Srivastava, D. S. Habitat structure, trophic structure and ecosystem function: Interactive effects in a bromeliad-insect community. Oecologia 149, 493–504 (2006).

    Article  Google Scholar 

  25. Teoduro, C. R., del Giorgio, P. A., Prairie, Y. T. & Camire, M. Patterns in pCO2 in boreal streams and rivers of northern Quebec, Canada. Glob. Biogeochem. Cycles 23, GB2012 (2009).

    Google Scholar 

  26. Cole, J. J. & Caraco, N. F. Atmospheric exchange of carbon dioxide in a low-wind oligotrophic lake measured by the addition of SF6 . Limnol. Oceanogr. 43, 647–656 (1998).

    Article  Google Scholar 

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Acknowledgements

We thank A. Barber, A. J. Klemmer and P. L. Thompson for assistance in constructing and sampling mesocosms. This research was financially supported by Natural Sciences and Engineering Research Council (Canada) grants to D.S.S., J.B.S., J.S.R. and P.K. and a New Zealand Foundation for Research, Science & Technology Fellowship (UBX0901) to H.S.G.

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All authors contributed to the design of the study and to the writing of the manuscript. Data were collected in the field by T.B.A., E.H., H.S.G. and P.K.

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Correspondence to Trisha B. Atwood.

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The authors declare no competing financial interests.

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Atwood, T., Hammill, E., Greig, H. et al. Predator-induced reduction of freshwater carbon dioxide emissions. Nature Geosci 6, 191–194 (2013). https://doi.org/10.1038/ngeo1734

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