NDLI: Nutrient uptake in a highly turbid estuary (the Humber, United Kingdom) and adjacent coastal waters

Content Provider	SpringerLink
Author	Shaw, Peter J. Purdie, Duncan A. Frietas, Pedro S. Rees, Andrew P. Joint, Ian
Copyright Year	1998
Abstract	Surveys were conducted in April and June 1995 to quantify the uptake of dissolved nutrients in a highly turbid estuary (the Humber, United Kingdom) and to determine the factors controlling nutrient uptake rates. A combination of isotope labelling methods were used in conjunction with on-deck incubation techniques to estimate the uptake of dissolved nutrients (PO$_{4}$ $^{3−}$, NH$_{4}$ $^{+}$, NO$_{3}$ $^{−}$, and urea) in surface samples collected from coastal waters. Similarly, isotope labelling and laboratory incubgation techniques were employed to estimate dissolved nitrogen uptake (NH$_{4}$ $^{+}$, NO$_{3}$ $^{−}$, and urea) in surface samples collected from the estuary mouth. Nutrient uptake rates were at the low end of ranges for coastal and estuarine environments reported in the literature. Concentrations of chlorophyll and the availability of photosynthetically active radiation were identified as potentially important factors controlling the uptake rates of nutrients. Uptake rates of dissolved nitrogen in the Humber mouth appeared to be related to the location of smapling sites. Depletion rates of dissolved nutrients in situ were estimated on the basis of integrated water column nutrient uptake rates and indicated assimilation of up to 16% of nutrients in the entire water column. Estimated depletion rates did not indicate preferential loss of any of the nutrient species investigated.
Starting Page	507
Ending Page	517
Page Count	11
File Format	PDF
ISSN	01608347
Journal	Estuaries
Volume Number	21
Issue Number	4
Language	English
Publisher	Springer-Verlag
Publisher Date	1998-01-01
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

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