In:
Annual Review of Marine Science, Annual Reviews, Vol. 14, No. 1 ( 2022-01-03), p. 431-455
Abstract:
Aquatic eddy covariance (AEC) is increasingly being used to study benthic oxygen (O 2 ) 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 m 2 ), 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 O 2 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 O 2 exchange. Finally, we highlight new developments of the technique, including measurements of air–water gas exchange and long-term deployments.
Type of Medium:
Online Resource
ISSN:
1941-1405
,
1941-0611
DOI:
10.1146/marine.2022.14.issue-1
DOI:
10.1146/annurev-marine-042121-012329
Language:
English
Publisher:
Annual Reviews
Publication Date:
2022
detail.hit.zdb_id:
2458404-6
SSG:
12
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