Articles | Volume 15, issue 13
Biogeosciences, 15, 3953–3965, 2018
https://doi.org/10.5194/bg-15-3953-2018
Biogeosciences, 15, 3953–3965, 2018
https://doi.org/10.5194/bg-15-3953-2018

Research article 02 Jul 2018

Research article | 02 Jul 2018

Stable isotopes of nitrate reveal different nitrogen processing mechanisms in streams across a land use gradient during wet and dry periods

Wei Wen Wong et al.

Related authors

Negligible isotopic fractionation of nitrogen within temperate Zostera spp. meadows
Douglas G. Russell, Wei Wen Wong, and Perran L. M. Cook
Biogeosciences, 15, 7225–7234, https://doi.org/10.5194/bg-15-7225-2018,https://doi.org/10.5194/bg-15-7225-2018, 2018
Short summary
The importance of nitrogen fixation to a temperate, intertidal embayment determined using a stable isotope mass balance approach
Douglas G. Russell, Adam J. Kessler, Wei Wen Wong, and Perran L. M. Cook
Biogeosciences Discuss., https://doi.org/10.5194/bg-2017-418,https://doi.org/10.5194/bg-2017-418, 2017
Preprint withdrawn
Short summary

Related subject area

Biogeochemistry: Rivers & Streams
Increased carbon capture by a silicate-treated forested watershed affected by acid deposition
Lyla L. Taylor, Charles T. Driscoll, Peter M. Groffman, Greg H. Rau, Joel D. Blum, and David J. Beerling
Biogeosciences, 18, 169–188, https://doi.org/10.5194/bg-18-169-2021,https://doi.org/10.5194/bg-18-169-2021, 2021
Short summary
Thermokarst amplifies fluvial inorganic carbon cycling and export across watershed scales on the Peel Plateau, Canada
Scott Zolkos, Suzanne E. Tank, Robert G. Striegl, Steven V. Kokelj, Justin Kokoszka, Cristian Estop-Aragonés, and David Olefeldt
Biogeosciences, 17, 5163–5182, https://doi.org/10.5194/bg-17-5163-2020,https://doi.org/10.5194/bg-17-5163-2020, 2020
Short summary
Soil organic carbon decomposition rates in river systems: effect of experimental conditions
Man Zhao, Liesbet Jacobs, Steven Bouillon, and Gerard Govers
Biogeosciences Discuss., https://doi.org/10.5194/bg-2020-267,https://doi.org/10.5194/bg-2020-267, 2020
Revised manuscript accepted for BG
Short summary
Temporary and net sinks of atmospheric CO2 due to chemical weathering in subtropical catchment with mixing carbonate and silicate lithology
Yingjie Cao, Yingxue Xuan, Changyuan Tang, Shuai Guan, and Yisheng Peng
Biogeosciences, 17, 3875–3890, https://doi.org/10.5194/bg-17-3875-2020,https://doi.org/10.5194/bg-17-3875-2020, 2020
Short summary
From canals to the coast: dissolved organic matter and trace metal composition in rivers draining degraded tropical peatlands in Indonesia
Laure Gandois, Alison M. Hoyt, Stéphane Mounier, Gaël Le Roux, Charles F. Harvey, Adrien Claustres, Mohammed Nuriman, and Gusti Anshari
Biogeosciences, 17, 1897–1909, https://doi.org/10.5194/bg-17-1897-2020,https://doi.org/10.5194/bg-17-1897-2020, 2020
Short summary

Cited articles

Barnes, R. T. and Raymond, P. A.: Land-use controls on sources and processing of nitrate in small watersheds: insights from dual isotopic analysis, Ecol. Appl., 20, 1961–1978, https://doi.org/10.1890/08-1328.1, 2010. 
Bateman, A. S. and Kelly S. D.: Fertilizer nitrogen isotope signatures, Isot. Environ. Healt. S., 43, 237–247, https://doi.org/10.1080/10256010701550732, 2007. 
Battaglin, W. A., Kendall, C., Chang, C. C. Y., Silva, S. R., and Campbell, D. H.: Chemical and isotopic evidence of nitrogen transformation in the Mississippi River, 1997–1998, Hydrol. Process., 15, 1285–1300, https://doi.org/10.1002/hyp.214, 2001. 
Billy, C., Billen, G., Sebilo, M., Birgand, F., and Tournebize, J.: Nitrogen isotopic composition of leached nitrate and soil organic matter as an indicator of denitrification in a sloping drained agricultural plot and adjacent uncultivated riparian buffer strips, Soil Biol. Biochem., 42, 108–117, https://doi.org/10.1016/j.soilbio.2009.09.026, 2010. 
Buchwald, C. and Casciotti, K. L.: Oxygen isotopic fractionation and exchange during bacterial nitrite oxidation, Limnol. Oceanogr., 55, 1064–1074, https://doi.org/10.4319/lo.2010.55.3.1064, 2010. 
Download
Short summary
Over-enrichment of nitrate can pose substantial risk to the quality of freshwater ecosystems. Hence, understanding the dynamics of nitrate is the key to better management of waterways. This study evaluates the relationship between the effects of land use and rainfall on the major sources and processing of nitrate within and between five streams in five catchments spanning an agricultural land use gradient. We found that rainfall exerted significant control over the fate of nitrate.
Altmetrics
Final-revised paper
Preprint