Lakes and reservoirs as regulators of carbon cycling and climate

Limnology and Oceanography - Tập 54 Số 6part2 - Trang 2298-2314 - 2009
Lars J. Tranvik1, John A. Downing2, James B. Cotner3, Steven Loiselle4, Robert G. Striegl5, Thomas J. Ballatore6, Peter J. Dillon7, Kerri Finlay8, Kenneth Fortino9, Lesley B. Knoll10, Pirkko Kortelainen11, Tiit Kutser12, Søren E. Larsen13, Isabelle Laurion14, Dina M. Leech15, S. Leigh McCallister16, Diane M. McKnight17, John M. Mélack18, Erin P. Overholt10, Jason A. Porter19, Yves T. Prairie20, William H. Renwick21, Fábio Roland22, Bradford S. Sherman23, David W. Schindler24, Sebastian Sobek25, Alain Tremblay26, Michael J. Vanni10, Antonie M. Verschoor1, Eddie von Wachenfeldt27,28, Gesa A. Weyhenmeyer1
1Department of Ecology and Evolution, Uppsala University, Uppsala, Sweden
2Department of Ecology, Evolution, and Organismal Biology, Iowa State University, Ames, Iowa
3Department of Ecology, Evolution and Behavior, University of Minnesota, St. Paul, Minnesota
4University of Siena, Siena, Italy
5U.S. Geological Survey, Denver, Colorado
6Daiichi University, Fukuoka, Japan
7Department of Chemistry, Trent University, Peterborough, Ontario, Canada
8Department of Biology, University of Regina, Regina, Saskatchewan, Canada
9University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
10Department of Zoology, Miami University, Oxford, Ohio
11Finnish Environment Institute, Helsinki, Finland
12Estonian Marine Institute, Tallinn, Estonia
13University of Oslo, Oslo, Norway
14INRS-ETE, UniversitÉ du QuÉbec, QuÉbec, QuÉbec, Canada
15Institute of Marine Science, University of North Carolina, Morehead City, North Carolina
16Virginia Commonwealth University, Richmond, Virginia
17INSTAAR, University of Colorado, Boulder, Colorado
18University of California at Santa Barbara, Santa Barbara, California
19Department of Biological Sciences, University of the Sciences in Philadelphia, Philadelphia, Pennsylvania
20Département des Sciences Biologiques, Université du Québec à Montréal, Montréal, Québec, Canada
21Geography Department, Miami University, Oxford, Ohio
22University of Juiz de Fora, Juiz de Fora, MG, Brazil
23CSIRO Land and Water, Canberra, Australia
24Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
25Eawag/ETH Zurich, Zurich, Switzerland
26Hydro-Québec, Montréal, Québec, Canada
27Centre for Limnology, Nieuwersluis, The Netherlands
28NIOO–l

Tóm tắt

We explore the role of lakes in carbon cycling and global climate, examine the mechanisms influencing carbon pools and transformations in lakes, and discuss how the metabolism of carbon in the inland waters is likely to change in response to climate. Furthermore, we project changes as global climate change in the abundance and spatial distribution of lakes in the biosphere, and we revise the estimate for the global extent of carbon transformation in inland waters. This synthesis demonstrates that the global annual emissions of carbon dioxide from inland waters to the atmosphere are similar in magnitude to the carbon dioxide uptake by the oceans and that the global burial of organic carbon in inland water sediments exceeds organic carbon sequestration on the ocean floor. The role of inland waters in global carbon cycling and climate forcing may be changed by human activities, including construction of impoundments, which accumulate large amounts of carbon in sediments and emit large amounts of methane to the atmosphere. Methane emissions are also expected from lakes on melting permafrost. The synthesis presented here indicates that (1) inland waters constitute a significant component of the global carbon cycle, (2) their contribution to this cycle has significantly changed as a result of human activities, and (3) they will continue to change in response to future climate change causing decreased as well as increased abundance of lakes as well as increases in the number of aquatic impoundments.

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Limnology and Oceanography

Tập 54 Số 6part2

2298-2314

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