NDLI: Mass-transfer-limited nitrate uptake on a coral reef flat, Warraber Island, Torres Strait, Australia

Content Provider	Springer Nature Link
Author	Baird, Mark E. Roughan, Moninya Brander, Robert W. Middleton, Jason H. Nippard, Greg J.
Copyright Year	2004
Abstract	Previous research has identified a relationship between the rate of dissipation of turbulent kinetic energy, ε , and the mass-transfer-limited rate of uptake by a surface, herein called the ε 1/4 law, and suggests this law may be applicable to nutrient uptake on coral reefs. To test this suggestion, nitrate uptake rate and gravitational potential energy loss have been measured for a section of Warraber Island reef flat, Torres Strait, northern Australia. The reef flat section is 3 km long, with a 3 m tidal range, and on the days measured, subject to 6 m s−1 tradewinds. The measured nitrate uptake coefficient, S , on two consecutive days during the rising tide was 1.23±0.28 and 1.42±0.52×10−4 m s−1. The measured loss of gravitational potential energy across the reef flat, ΔGPE , on the same rising tides over a 178 m section was 208±24 and 161±20 kg m−1 s−2. Assuming the ΔGPE is dissipated as turbulent kinetic energy in the water column, and using the ε 1/4 law, the mass-transfer-limited nitrate uptake coefficient, SMTL , on the two days was 1.57±0.03 and 1.45±0.04×10−4 m s−1. Nitrate uptake on Warraber Island reef flat is close to the mass-transfer limit, and is determined by oceanographic nitrate concentrations and energy climate.
Starting Page	386
Ending Page	396
Page Count	11
File Format	PDF
ISSN	07224028
Journal	Coral Reefs
Volume Number	23
Issue Number	3
e-ISSN	14320975
Language	English
Publisher	Springer-Verlag
Publisher Date	2004-07-28
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Coral reefs Friction Nutrient uptake Hydrodynamics Torres Strait Great Barrier Reef
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

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