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Medientyp:
E-Artikel
Titel:
Aquatic Eddy Covariance: The Method and Its Contributions to Defining Oxygen and Carbon Fluxes in Marine Environments
Beteiligte:
Berg, Peter;
Huettel, Markus;
Glud, Ronnie N.;
Reimers, Clare E.;
Attard, Karl M.
Erschienen:
Annual Reviews, 2022
Erschienen in:
Annual Review of Marine Science, 14 (2022) 1, Seite 431-455
Sprache:
Englisch
DOI:
10.1146/annurev-marine-042121-012329
ISSN:
1941-1405;
1941-0611
Entstehung:
Anmerkungen:
Beschreibung:
Aquatic eddy covariance (AEC) is increasingly being used to study benthic oxygen (O2) flux dynamics, organic carbon cycling, and ecosystem health in marine and freshwater environments. Because it is a noninvasive technique, has a high temporal resolution (∼15 min), and integrates over a large area of the seafloor (typically 10–100 m2), it has provided new insights on the functioning of aquatic ecosystems under naturally varying in situ conditions and has given us more accurate assessments of their metabolism. In this review, we summarize biogeochemical, ecological, and biological insightsgained from AEC studies of marine ecosystems. A general finding for all substrates is that benthic O2 exchange is far more dynamic than earlier recognized, and thus accurate mean values can only be obtained from measurements that integrate over all timescales that affect the local O2 exchange. Finally, we highlight new developments of the technique, including measurements of air–water gas exchange and long-term deployments.