Articles | Volume 15, issue 23
Research article
04 Dec 2018
Research article |  | 04 Dec 2018

Negligible isotopic fractionation of nitrogen within temperate Zostera spp. meadows

Douglas G. Russell, Wei Wen Wong, and Perran L. M. Cook

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Cited articles

Altabet, M. A. and Francois, R.: Sedimentary nitrogen isotopic ratio as a recorder for surface ocean nitrate utilization, Global Biogeochem. Cy., 8, 103–116,, 1994. 
APHA: Standard methods for the examination of water and wastewater, American Public Health Association, American Water Works Association, and Water Environment Federation, Washington, DC, 2005. 
Barrón, C., Middelburg, J. J., and Duarte, C. M.: Phytoplankton trapped within seagrass (Posidonia oceanica) sediments are a nitrogen source: An in situ isotope labeling experiment, Limnol. Oceanogr., 51, 1648–1653,, 2006. 
Brodersen, K. E., Nielsen, D. A., Ralph, P. J., and Kühl, M.: Oxic microshield and local pH enhancement protects Zostera muelleri from sediment derived hydrogen sulphide, New Phytol., 205, 1264–1276,, 2015. 
Brooks, P. D., Stark, J. M., McInteer, B. B., and Preston, T.: Diffusion Method To Prepare Soil Extracts For Automated Nitrogen-15 Analysis, Soil Sci. Soc. Am. J., 53, 1707–1711,, 1989. 
Short summary
Nitrogen is an important nutrient in marine environments and is continually converted from one form to another. One way these processes can be investigated is by looking at the ratio of the 15N and 14N stable isotopes of different nitrogen-containing compounds. To date few studies have compared these ratios in seagrass beds, their associated sediments and the porewater NH4+ pool. The strong relationship between these nitrogen pools suggests that nitrogen is tightly recycled within seagrass beds.
Final-revised paper