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Primary production in a turbid estuary Joint, I.R.; Pomroy, A.J. (1981). Primary production in a turbid estuary. Est., Coast. and Shelf Sci. 13(3): 303-316. https://dx.doi.org/10.1016/S0302-3524(81)80028-X In: Estuarine, Coastal and Shelf Science. Academic Press: London; New York. ISSN 0272-7714; e-ISSN 1096-0015, meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 354455 [ aanvragen ]

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Trefwoorden

ANE, British Isles, Bristol Channel Aquatic communities > Plankton > Phytoplankton Excretion Primary production Properties > Physical properties > Turbidity Water bodies > Coastal waters > Coastal landforms > Coastal inlets > Estuaries Bristol Channel [Marine Regions]; English Coast [Marine Regions] Marien/Kust; Brak water

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Auteurs		Top
Joint, I.R. Pomroy, A.J.

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Abstract

The primary production in the Bristol Channel, U.K., was studied from 1973 to 1977: in this estuary, the euphotic zone extends from less than 0.5 m to greater than 10m and there is a large riverine input of inorganic nutrients. The standing stock of phytoplankton chlorophyll a was measured in 1973 and 1974 and was similar throughout the Bristol Channel but the rate of primary production was much greater where the water was less turbid. The estimated primary production was 6.8g C m2 for the most turbid region and 164.9g C m2 for the Outer Bristol Channel. A larger proportion of the annual primary production occurred in the spring in the Outer Channel than in the most turbid regions. Phaeocystis developed into blooms in some, but not all, years and exhibited a different light saturation curve to other phytoplankton populations. Serial incubations of short duration gave higher fixation rates than day-long incubations and it is argued that photoinhibition is probably insignificant in a mixed water column. Excretion rates of dissolved organic carbon by phytoplankton were always low.

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