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Cited by 318

The DOI matches its Crossref record; 24 of the 24 references it cites were found in a registry or an index.

Sediment Trapping by Dams Creates Methane Emission Hot Spots

Open access
Maeck, Andreas, DelSontro, Tonya, McGinnis, Daniel F., Fischer, Helmut, Flury, Sabine, Schmidt, Mark, Fietzek, Peer, Lorke, Andreas·2013·Environmental Science & Technology

Abstract

Inland waters transport and transform substantial amounts of carbon and account for ∼18% of global methane emissions. Large reservoirs with higher areal methane release rates than natural waters contribute significantly to freshwater emissions. However, there are millions of small dams worldwide that receive and trap high loads of organic carbon and can therefore potentially emit significant amounts of methane to the atmosphere. We evaluated the effect of damming on methane emissions in a central European impounded river. Direct comparison of riverine and reservoir reaches, where sedimentation in the latter is increased due to trapping by dams, revealed that the reservoir reaches are the major source of methane emissions (∼0.23 mmol CH4 m(-2) d(-1) vs ∼19.7 mmol CH4 m(-2) d(-1), respectively) and that areal emission rates far exceed previous estimates for temperate reservoirs or rivers. We show that sediment accumulation correlates with methane production and subsequent ebullitive release rates and may therefore be an excellent proxy for estimating methane emissions from small reservoirs. Our results suggest that sedimentation-driven methane emissions from dammed river hot spot sites can potentially increase global freshwater emissions by up to 7%.

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Metadata

Authors
Maeck, A., DelSontro, T., McGinnis, D. F., Fischer, H., Flury, S., Schmidt, M., Fietzek, P., & Lorke, A.
Venue
Environmental Science & Technology
Published
2013-08-06
Volume
47
Issue
15
Pages
8130-8137
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
OpenAlex
W2047575934
Cited by
318
References
24
FWCI
11.58
Type
journal article
Language
en
Open access
green

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