Variations in the natural abundance of 15N in estuarine suspended particulate matter: A specific indicator of biological processing |
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| Authors: | NJP Owens |
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| Institution: | Natural Environment Research Council, Institute for Marine Environmental Research, Prospect Place, The Hoe, Plymouth PL1 3DH, U.K. |
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| Abstract: | In this study, the 14N:15N ratio of suspended particulate material collected from the Tamar river estuary, south-west England, is described. Three populations of particles, distinguishable by their 15N content, were observed. This investigation has shown that populations of estuarine particles are generated by biological transformations in situ and that the 15N content of estuarine particles does not merely reflect hydrodynamic mixing of the freshwater and seawater source particulate material. |
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| Keywords: | suspended matter isotopic composition nitrogen estuaries |
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