Articles | Volume 15, issue 10
Biogeosciences, 15, 3121–3131, 2018
Biogeosciences, 15, 3121–3131, 2018
Research article
24 May 2018
Research article | 24 May 2018

N and P as ultimate and proximate limiting nutrients in the northern Gulf of Mexico: implications for hypoxia reduction strategies

Katja Fennel and Arnaud Laurent

Related authors

Role of phosphorus in the seasonal deoxygenation of the East China Sea shelf
Arnaud Laurent, Haiyan Zhang, and Katja Fennel
Biogeosciences Discuss.,,, 2022
Preprint under review for BG
Short summary
A modelling study of temporal and spatial pCO2 variability on the biologically active and temperature-dominated Scotian Shelf
Krysten Rutherford, Katja Fennel, Dariia Atamanchuk, Douglas Wallace, and Helmuth Thomas
Biogeosciences, 18, 6271–6286,,, 2021
Short summary
Can assimilation of satellite observations improve subsurface biological properties in a numerical model? A case study for the Gulf of Mexico
Bin Wang, Katja Fennel, and Liuqian Yu
Ocean Sci., 17, 1141–1156,,, 2021
Short summary
Ideas and perspectives: Biogeochemistry – some key foci for the future
Thomas S. Bianchi, Madhur Anand, Chris T. Bauch, Donald E. Canfield, Luc De Meester, Katja Fennel, Peter M. Groffman, Michael L. Pace, Mak Saito, and Myrna J. Simpson
Biogeosciences, 18, 3005–3013,,, 2021
Short summary
An observation-based evaluation and ranking of historical Earth system model simulations in the northwest North Atlantic Ocean
Arnaud Laurent, Katja Fennel, and Angela Kuhn
Biogeosciences, 18, 1803–1822,,, 2021
Short summary

Related subject area

Biogeochemistry: Coastal Ocean
Observed and projected global warming pressure on coastal hypoxia
Michael M. Whitney
Biogeosciences, 19, 4479–4497,,, 2022
Short summary
Benthic alkalinity fluxes from coastal sediments of the Baltic and North seas: comparing approaches and identifying knowledge gaps
Bryce Van Dam, Nele Lehmann, Mary A. Zeller, Andreas Neumann, Daniel Pröfrock, Marko Lipka, Helmuth Thomas, and Michael Ernst Böttcher
Biogeosciences, 19, 3775–3789,,, 2022
Short summary
Investigating the effect of nickel concentration on phytoplankton growth to assess potential side-effects of ocean alkalinity enhancement
Jiaying Abby Guo, Robert Strzepek, Anusuya Willis, Aaron Ferderer, and Lennart Thomas Bach
Biogeosciences, 19, 3683–3697,,, 2022
Short summary
Unprecedented summer hypoxia in southern Cape Cod Bay: an ecological response to regional climate change?
Malcolm E. Scully, W. Rockwell Geyer, David Borkman, Tracy L. Pugh, Amy Costa, and Owen C. Nichols
Biogeosciences, 19, 3523–3536,,, 2022
Short summary
Interannual variabilities, long-term trends, and regulating factors of low-oxygen conditions in the coastal waters off Hong Kong
Zheng Chen, Bin Wang, Chuang Xu, Zhongren Zhang, Shiyu Li, and Jiatang Hu
Biogeosciences, 19, 3469–3490,,, 2022
Short summary

Cited articles

Aulenbach, B. T., Buxton, H. T., Battaglin, W. A., and Coupe, R. H.: Streamflow and nutrient fluxes of the Mississippi-Atchafalaya River Basin and subbasins for the period of record through 2005, Tech. rep., 2007.
Bianchi, T. S., DiMarco, S., Cowan, J., Hetland, R., Chapman, P., Day, J., and Allison, M.: The science of hypoxia in the Northern Gulf of Mexico: a review, Sci. Total Environ., 408, 1471–1484, 2010.
Brezonik, P. L., Bierman Jr., V. J., Alexander, R., Anderson, J., Barko, J., Dortch, M., Hatch, L., Hitchcock, G. L., Keeney, D., Mulla, D., Smith, V., Walker, C., Whitledge, T., and Wiseman Jr., W. J.: Effects of reducing nutrient loads to surface waters within the Mississippi River Basin and the Gulf of Mexico: Topic 4, Report for the Integrated Assessment on Hypoxia in the Gulf of Mexico, Tech. rep., NOAA/National Centers for Coastal Ocean Sci., Silver Spring MD, 1999.
Conley, D. J.: Biogeochemical nutrient cycles and nutrient management strategies, Hydrobiologia, 410, 87–96, 1999.
Short summary
Increasing human-derived nutrient inputs to coastal oceans lead to spreading dead zones around the world. Here a biogeochemical model for the northern Gulf of Mexico, where nutrients from the Mississippi River create the largest dead zone in North American coastal waters, is used for the first time to show the effects of single and dual nutrient reductions of nitrogen (N) and phosphorus (P). Significant reductions in N or N&P load would be required to significantly reduce hypoxia in this system.
Final-revised paper