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Enteromorpha and the cycling of nitrogen in a small estuary
Owens, N.J.P.; Stewart, W.D.P. (1983). Enteromorpha and the cycling of nitrogen in a small estuary. Est., Coast. and Shelf Sci. 17: 287-296
In: Estuarine, Coastal and Shelf Science. Academic Press: London; New York. ISSN 0272-7714, more
Peer reviewed article  

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Keywords
    Estuaries; Nitrogen cycle; Nitrogen fixation; Primary production; Enteromorpha Link, 1820 [WoRMS]; Marine; Brackish water

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  • Owens, N.J.P., more
  • Stewart, W.D.P.

Abstract
    The nitrogen relations of Enteromorpha spp. growing on intertidal mud flats have been examined over a twelve-month period. Nitrogen assimilation rates using 15N have been used to calculate the production of the alga and were between 0 multiplied by 046 and 0 multiplied by 217 mg NH4+-N (g dry wt alga)-1 h-1. A considerable quantity of the alga was buried beneath the sediment over the growth season and was calculated to be equivalent to an input of up to 9 multiplied by 52 g N m-2)per month and 32 g N m-2 over one complete growth season. Based on carbon, this latter value represented an input of approximately 320 g C m-2 annually. Low rates of nitrogenase activity (acetylene reduction) were found to be associated with the Enteromorpha.

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