NDLI: Estuary-specific variation in the air-water gas exchange coefficient for oxygen

Content Provider	Springer Nature Link
Author	Kremer, James N. Reischauer, Alyssa D’Avanzo, Charlene
Copyright Year	2003
Abstract	Oxygen air-water gas exchange was measured using floating chambers in two shallow tidal estuaries of differing bathymetry and local terrain, near Waquoit Bay, Massachusetts (United States). The specific chamber design permitted measurements of gas flux in 15 min, allowing analysis of the relationship with wind speed and tidal stage. Exchange coefficients ranged from 0.5 to 2.5 g O$_{2}$·m$^{−2}$ h$^{−1}$ atm$^{−1}$ (equivalent to piston velocities of 1.5 to 7 cm h$^{−1}$) for wind speeds of 0.3 to 9 m s$^{−1}$ at 10 m elevation. While the relationships for each estuary appear linear (significant linear regressions with wind speed were shown for each estuary, and the slopes were different at the 99.5% confidence level), the range of speeds differed at the two sites and an exponential function of wind speed was consistent with the combined data from both estuaries. A power function of wind speed was not an acceptable model. The exchange coefficients for our estuaries are from 57% to as low as 9% of that predicted by previously published generic equations. Because the atmospheric correction can be significant in shallow, metabolically active coastal waters, we suggest that empirically determined relationships for gas exchange versus wind for a specific estuary are preferable to the predictions of the general equations. While the floating chamber method should be used cautiously, at low winds speeds (below 8 m s$^{−1}$) and in slowly flowing waters, it provides a convenient approach for quantifying these site-specific differences. The differences, especially those between shallow sheltered systems and the open waters best fit by some published relationships, are ecologically important and do not appear yet to be measurable by other methods.
Starting Page	829
Ending Page	836
Page Count	8
File Format	PDF
ISSN	01608347
Journal	Estuaries
Volume Number	26
Issue Number	4
Language	English
Publisher	Springer-Verlag
Publisher Date	2003-01-01
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Environment Ecology Geosciences Freshwater & Marine Ecology Environmental Management Nature Conservation
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Aquatic Science Environmental Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Technical note: Conditions for using the floating chamber method to estimate air-water gas exchange

Water renewal estimates for aquaculture developments in the Richibucto estuary, Canada

Tidal variability in the water quality of an urbanized estuary

Transformation of phosphorus in the Elbe estuary

Variation in surface turbulence and the gas transfer velocity over a tidal cycle in a macro-tidal estuary

Gas exchange in rivers and estuaries: Choosing a gas transfer velocity

Time-dependent stratification in the Gauthami-Godavari estuary

Freshwater inflow and estuarine variability in the Gamtoos Estuary, South Africa

Nitrogen budget for low and high freshwater inflows, Nueces Estuary, Texas

Estuary-specific variation in the air-water gas exchange coefficient for oxygen

Similar Documents

Technical note: Conditions for using the floating chamber method to estimate air-water gas exchange

Water renewal estimates for aquaculture developments in the Richibucto estuary, Canada

Tidal variability in the water quality of an urbanized estuary

Transformation of phosphorus in the Elbe estuary

Variation in surface turbulence and the gas transfer velocity over a tidal cycle in a macro-tidal estuary

Gas exchange in rivers and estuaries: Choosing a gas transfer velocity

Time-dependent stratification in the Gauthami-Godavari estuary

Freshwater inflow and estuarine variability in the Gamtoos Estuary, South Africa

Nitrogen budget for low and high freshwater inflows, Nueces Estuary, Texas

Estuary-specific variation in the air-water gas exchange coefficient for oxygen