Aquatic Eddy Covariance: The Method and Its Contributions to Defining Oxygen and Carbon Fluxes in Marine Environments

Peter Berg, Markus Huettel, Ronnie N. Glud, Clare E. Reimers, Karl M. Attard

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

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.

Original languageEnglish
JournalAnnual Review of Marine Science
Volume14
Pages (from-to)431-455
ISSN1941-1405
DOIs
Publication statusPublished - Jan 2022

Bibliographical note

Publisher Copyright:
© 2022 by Annual Reviews. All rights reserved.

Keywords

  • air-water exchange
  • Aquatic eddy covariance
  • blue carbon
  • carbon cycling
  • drivers of oxygen flux
  • oxygen dynamics
  • sediment-water exchange

Fingerprint

Dive into the research topics of 'Aquatic Eddy Covariance: The Method and Its Contributions to Defining Oxygen and Carbon Fluxes in Marine Environments'. Together they form a unique fingerprint.

Cite this