The Annual Cycle of Nutrients in the Menai Straits
- 1 June 1967
- journal article
- research article
- Published by Cambridge University Press (CUP) in Journal of the Marine Biological Association of the United Kingdom
- Vol. 47 (3), 533-542
- https://doi.org/10.1017/s0025315400035165
Abstract
The annual cycle of silicate, nitrate and phosphorus in the waters of the Menai Straits is described. The concentration of all these nutrients in these waters is apparently markedly affected by occasional incursions of high-salinity low-nutrient water. The concentrations of nitrate-nitrogen tend to show a general increase throughout the winter months as a result of cumulative contributions from land drainage and run off and the absence of appreciable biological utilization. In contrast, an equilibrium concentration of reactive silicate is maintained over this period following the initial autumnal increase in the concentration of this component. The annual cycle of phosphorus in these waters is also anomalous. Relatively high equilibrium concentrations of this nutrient are maintained during the summer months and unexpectedly low concentrations occur in winter. In conjunction with the biological removal of relatively large amounts of nitrate-nitrogen, this causes anomalously high apparent N: P biological utilization ratios. It is difficult to explain the observed variations in the concentration of phosphate in these waters solely in terms of the equilibrium between biological assimilation and regeneration and advective processes.This publication has 13 references indexed in Scilit:
- The Estimation of Phytoplankton PigmentsICES Journal of Marine Science, 1964
- The determination of nitrate in sea waterAnalytica Chimica Acta, 1963
- Abnormal Hydrographical Conditions in the Menai StraitsNature, 1962
- A modified single solution method for the determination of phosphate in natural watersAnalytica Chimica Acta, 1962
- The Absorption of Phosphate by Estuarine Bottom DepositsMarine and Freshwater Research, 1959
- The removal of soluble silica from fresh water entering the seaGeochimica et Cosmochimica Acta, 1958
- Sorption reactions and some ecological implicationsDeep Sea Research (1953), 1954
- Studies in Australian Estuarine Hydrology. I. Introdutory and Comparative FeaturesMarine and Freshwater Research, 1951
- The Exchange of Dissolved Substances between Mud and Water in LakesJournal of Ecology, 1942
- The Exchange of Dissolved Substances Between Mud and Water in LakesJournal of Ecology, 1941