期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 496, 期 -, 页码 563-575出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2014.07.057
关键词
Phosphorus; Oxygen isotopes; Eutrophication; Freshwater; Nutrient sources; Metabolism
资金
- Natural Environment Research Council [NE/K501001/1]
- British Geological Survey
- NERC [NE/I015361/1, bgs05007] Funding Source: UKRI
- Natural Environment Research Council [NE/I015361/1, ceh010010, 1231234, bgs05007] Funding Source: researchfish
The oxygen isotope ratio of dissolved inorganic phosphate (delta O-18(p)) represents a novel and potentially powerful stable isotope tracer for biogeochemical research. Analysis of delta O-18(p) may offer new insights into the relative importance of different sources of phosphorus within natural ecosystems. Due to the isotope fractionations that occur alongside the metabolism of phosphorus, delta O-18(p), could also be used to better understand the intracellular and extracellular reaction mechanisms that control phosphorus cycling. In this review focussed on aquatic ecosystems, we examine the theoretical basis to using stable oxygen isotopes within phosphorus research. We consider the methodological challenges involved in accurately determining delta O-18(p), given aquatic matrices in which potential sources of contaminant oxygen are ubiquitous. Finally, we synthesise the existing global data regarding delta O-18(p) in aquatic ecosystems, concluding by identifying four key areas for future development of delta O-18(p) research. Through this synthesis, we seek to stimulate broader interest in the use of delta O-18(p) to address the significant research and management challenges that continue to surround the stewardship of phosphorus. (C) 2014 The Authors. Published by Elsevier B.V.
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