Abstract
Projections for the next 50 years predict a widespread distribution of hypoxic zones in the open and coastal ocean due to environmental and global changes. The Tidal Garonne River (SW France) has already experienced few episodic hypoxic events. However, predicted future climate and demographic changes suggest that summer hypoxia could become more severe and even permanent near the city of Bordeaux in the next few decades. A 3D model, which couples hydrodynamic, sediment transport, and biogeochemical processes, is applied to assess the impact of factors submitted to global and regional climate changes on oxygenation in the turbidity maximum zone (TMZ) of the Tidal Garonne River during low-discharge periods. The model simulates an intensification of summer hypoxia with an increase in temperature, a decrease in river flow or an increase in the local population, but not with sea level rise, which has a negligible impact on dissolved oxygen. Different scenarios were tested by combining these different factors according to the regional projections for 2050 and 2100. All the simulations showed a trend toward a spatial and temporal extension of summer hypoxia that needs to be considered by local water authorities to impose management strategies to protect the ecosystem.
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Abbreviations
- DO:
-
dissolved oxygen
- DOC:
-
dissolved organic carbon
- OM:
-
organic matter
- POC:
-
particulate organic carbon
- SSC:
-
suspended sediment concentration
- SO:
-
sewage overflow
- TGR:
-
Tidal Garonne River
- TMZ:
-
turbidity maximum zone
- WS:
-
watershed
- WW:
-
wastewater
- WWTP:
-
wastewater treatment plant
References
Abril G, Etcheber H, Le Hir P et al (1999) Oxic/anoxic oscillations and organic carbon mineralization in an estuarine maximum turbidity zone (the Gironde, France). Limnol Oceanogr 44:1304–1315
Allen GP (1972) Étude des processus sédimentaires dans l’estuaire de la Gironde. Université de Bordeaux, Bordeaux
Allen GP, Salomon J, Bassoullet P (1980) Effects of tides on mixing and suspended sediment transport in macrotidal estuaries. Sediment Geol 26:69–90
Ambrose RB, Wool TA, Martin JL (1993) The water quality analysis simulation program, WASP5 part A: model documentation. Development Protection Agency, United States Environmental Protection Agency, Athens
Boé J, Habets F (2014) Multi-decadal river flow variations in France. 691–708. https://doi.org/10.5194/hess-18-691-2014
Brenon I, Hir P Le (1999) Modelling the turbidity maximum in the seine estuary ( France ): identification of formation. 525–544.
Cocco V, Joos F, Steinacher M, Frölicher TL, Bopp L, Dunne J, Gehlen M, Heinze C, Orr J, Oschlies A, Schneider B, Segschneider J, Tjiputra J (2013) Oxygen and indicators of stress for marine life in multi-model global warming projections. Biogeosciences 10:1849–1868. https://doi.org/10.5194/bg-10-1849-2013
Conley DJ, Carstensen J, Vaquer-Sunyer R, Duarte CM (2009) Ecosystem thresholds with hypoxia. Hydrobiologia 629:21–29. https://doi.org/10.1007/s10750-009-9764-2
Cotovicz LC, Knoppers BA, Brandini N et al (2017) Aragonite saturation state in a tropical coastal embayment dominated by phytoplankton blooms (Guanabara Bay-Brazil). Mar Pollut Bull 129:0–1. https://doi.org/10.1016/j.marpolbul.2017.10.064
Cox TJS, Maris T, Soetaert K, Conley DJ, van Damme S, Meire P, Middelburg JJ, Vos M, Struyf E (2009) A macro-tidal freshwater ecosystem recovering from hypereutrophication: the Schelde case study. Biogeosciences 6:2935–2948. https://doi.org/10.5194/bg-6-2935-2009
Cugier P, Le Hir P (2002) Development of a 3D hydrodynamic model for coastal ecosystem modelling. Application to the plume of the Seine River (France). Estuar Coast Shelf Sci 55:673–695. https://doi.org/10.1006/ecss.2001.0875
de Jonge VN, Elliott M, Orive E (2002) Causes , historical development , effects and future challenges of a common environmental problem : eutrophication. In: 1–19
Diaz RJ, Rosenberg R (2008) Spreading dead zones and consequences for marine ecosystems. Science (80- ) 321:926–929. https://doi.org/10.1126/science.1156401
Dronkers J (1986) Tidal asymmetry and estuarine morphology. Netherlands J Sea Res 20:117–131. https://doi.org/10.1016/0077-7579(86)90036-0
Droop MR (1968) Vitamin B12 and marine ecology. IV. The kinetics of uptake, growth and inhibition in Monochrysis lutheri. J Mar Biol Assoc 48:689–733
Eppley RW (1972) Temperature and phytoplankton growth in the sea. Fish Bull 70:1063–1085
Etcheber H, Taillez A, Abril G, Garnier J, Servais P, Moatar F, Commarieu MV (2007) Particulate organic carbon in the estuarine turbidity maxima of the Gironde, Loire and Seine estuaries: origin and lability. Hydrobiologia 588:245–259. https://doi.org/10.1007/s10750-007-0667-9
Etcheber H, Schmidt S, Sottolichio A, Maneux E, Chabaux G, Escalier JM, Wennekes H, Derriennic H, Schmeltz M, Quéméner L, Repecaud M, Woerther P, Castaing P (2011) Monitoring water quality in estuarine environments: lessons from the MAGEST monitoring program in the Gironde fluvial-estuarine system. Hydrol Earth Syst Sci 15:831–840. https://doi.org/10.5194/hess-15-831-2011
Etcheber H, Coupry B, Coynel A et al (2013) Disponibility of surficial continental waters. In: Le Treut H (ed) Impact of climate change in the Aquitaine region. Scientific report., resses Uni. Pessac, p 365
Friedrichs CT, Aubrey DG (1988) Non-linear tidal distortion in shallow well-mixed estuaries: a synthesis. Estuar Coast Shelf Sci 27:521–545. https://doi.org/10.1016/0272-7714(88)90082-0
Gilbert D, Rabalais NN, Díaz RJ, Zhang J (2010) Evidence for greater oxygen decline rates in the coastal ocean than in the open ocean. Biogeosciences 7:2283–2296. https://doi.org/10.5194/bg-7-2283-2010
Goosen NK, Kromkamp J, Peene J, van Rijswijk P, van Breugel P (1999) Bacterial and phytoplankton production in the maximum turbidity zone of three European estuaries: the Elbe, Westerschelde and Gironde. J Mar Syst 22:151–171
Hagy JD, Boynton WR, Keefe CW, Wood KV (2004) Hypoxia in Chesapeake Bay, 1950–2001: long-term change in relation to nutrient loading and river flow. Estuaries 27:634–658. https://doi.org/10.1007/BF02907650
Howarth RW, Swaney DP, Butler TJ, Marino R (2000) Rapid communication: climatic control on eutrophication of the Hudson river estuary. Ecosystems 3:210–215. https://doi.org/10.1007/s100210000020
Howarth R, Chan F, Conley DJ, Garnier J, Doney SC, Marino R, Billen G (2011) Coupled biogeochemical cycles: eutrophication and hypoxia in temperate estuaries and coastal marine ecosystems. Front Ecol Environ 9:18–26. https://doi.org/10.1890/100008
IPCC (2013) Climate change 2013: the physical science basis. In: Stocker TF, Qin D, Plattner G-K, Tignor M, Allen SK, Boschung J, Nauels A, Xia Y, Bex V, Midgley PM (eds) Contribution of working group I to the fifth assessment report of the intergovernmental panel on climate change. Cambridge University Press, Cambridge and New York, pp 1535
Jalón-Rojas I, Schmidt S, Sottolichio A (2015) Turbidity in the fluvial Gironde estuary (Southwest France) based on 10-year continuous monitoring: sensitivity to hydrological conditions. Hydrol Earth Syst Sci 19:2805–2819. https://doi.org/10.5194/hess-19-2805-2015
Jalón-Rojas I, Sottolichio A, Hanquiez V, Fort A, Schmidt S (2018) To what extent multidecadal changes in morphology and fluvial discharge impact tide in a convergent (turbid) tidal river. J Geophys Res Oceans 123:3241–3258. https://doi.org/10.1002/2017JC013466
Justić D, Bierman VJ Jr, Scavia D, Hetland RD (2007) Forecasting gulf’s hypoxia : the next 50 years ? Estuar Coasts 30:791–801
Kemp WM, Testa JM, Conley DJ, Gilbert D, Hagy JD (2009) Coastal hypoxia responses to remediation. Biogeosci Discuss 6:6889–6948. https://doi.org/10.5194/bgd-6-6889-2009
Lajaunie-Salla K, Wild-Allen K, Sottolichio A, Thouvenin B, Litrico X, Abril G (2017) Impact of urban effluents on summer hypoxia in the highly turbid Gironde estuary , applying a 3D model coupling hydrodynamics, sediment transport and biogeochemical processes. J Mar Syst 174:89–105. https://doi.org/10.1016/j.jmarsys.2017.05.009
Lanoux A, Etcheber H, Schmidt S, Sottolichio A, Chabaud G, Richard M, Abril G (2013) Factors contributing to hypoxia in a highly turbid, macrotidal estuary (the Gironde, France). Environ Sci Process Impacts 15:585–595. https://doi.org/10.1039/c2em30874f
Lanoux A, Lepage M, DeWatteville J, Jatteau P, Schmidt S, Sottolichio A (2014) Effects of hypoxia on the fish and crustacean fauna in the Gironde Estuary. In: The 46th International Liege Colloquium, Liege, Belgium. https://doi.org/10.13140/2.1.1172.4165
Le Treut H (2013) Impact of climate change in the Aquitaine region. Scientific Report., Presses Un. Pessac
Lehmann A, Hinrichsen HH, Getzlaff K, Myrberg K (2014) Quantifying the heterogeneity of hypoxic and anoxic areas in the Baltic Sea by a simplified coupled hydrodynamic-oxygen consumption model approach. J Mar Syst 134:20–28. https://doi.org/10.1016/j.jmarsys.2014.02.012
Lemaire E, Abril G, De Wit R, Etcheber H (2002) Effet de la turbidité sur la dégradation des pigments phytoplanctoniques dans l’estuaire de la Gironde. Geoscience 334:251–258
Li D, Zhang J, Huang D et al (2002) Oxygen depletion off the Changjiang (Yangtze River) estuary. Sci China Ser D 45:1137. https://doi.org/10.1360/02yd9110
Meire L, Soetaert KER, Meysman FJR (2013) Impact of global change on coastal oxygen dynamics and risk of hypoxia. 2633–2653. https://doi.org/10.5194/bg-10-2633-2013
Naqvi SWA, Bange HW, Farías L, Monteiro PMS, Scranton MI, Zhang J (2010) Marine hypoxia/anoxia as a source of CH4 and N2O. Biogeosciences 7:2159–2190. https://doi.org/10.5194/bg-7-2159-2010
Peña M, Katsev S, Oguz T, Gilbert D (2010) Modeling dissolved oxygen dynamics and coastal hypoxia: a review. Biogeosciences 6:9195–9256. https://doi.org/10.5194/bgd-6-9195-2009
Rabalais NN, Levin LA, Turner RE et al (2010) Dynamics and distribution of natural and human-caused coastal hypoxia. Biogeosciences 7:585–619. https://doi.org/10.5194/bgd-6-9359-2009
Robins PE, Skov MW, Lewis MJ, Giménez L, Davies AG, Malham SK, Neill SP, McDonald JE, Whitton TA, Jackson SE, Jago CF (2016) Impact of climate change on UK estuaries: a review of past trends and potential projections. Estuar Coast Shelf Sci 169:119–135. https://doi.org/10.1016/j.ecss.2015.12.016
Schmidt S, Etcheber H, Sottolichio A, Castaing P (2016) Le réseau MAGEST: bilan de 10 ans de suivi haute-fréquence de la qualité des eaux de l’estuaire de la Gironde. In: Schmitt FG, Lefevre A (eds) Mesures haute résolution dans l’environnement marin côtier. Presses du CNRS
Schmidt S, Bernard C, Escalier J-M, Etcheber H, Lamouroux M (2017) Assessing and managing the risks of hypoxia in transitional waters: a case study in the tidal Garonne River (south-West France). Environ Sci Pollut Res 24:3251–3259. https://doi.org/10.1007/s11356-016-7654-5
Seneviratne SI, Donat MG, Mueller B, Alexander LV (2014) No pause in the increase of hot temperature extremes. Nat Clim Chang 4:161–163. https://doi.org/10.1038/nclimate2145
Skerratt J, Wild-Allen K, Rizwi F, Whitehead J, Coughanowr C (2013) Use of a high resolution 3D fully coupled hydrodynamic, sediment and biogeochemical model to understand estuarine nutrient dynamics under various water quality scenarios. Ocean Coast Manag 83:52–66. https://doi.org/10.1016/j.ocecoaman.2013.05.005
Soetaert K, Middelburg JJ, Heip C, Meire P, van Damme S, Maris T (2006) Long-term change in dissolved inorganic nutrients in the heterotrophic Scheldt estuary (Belgium, the Netherlands). Limnol Oceanogr 51:409–423
Sottolichio A, Le Hir P, Castaing P (2000) Modeling mechanisms for the stability of the turbidity maximum in the Gironde estuary, France. Proc Mar Sci 3:373–386
Talke SA, Swart HE, de Jonge VN (2009) An idealized model and systematic process study of oxygen depletion in highly turbid estuaries. Estuar Coasts 32:602–620. https://doi.org/10.1007/s12237-009-9171-y
Testa JM, Li Y, Lee YJ, Li M, Brady DC, di Toro DM, Kemp WM, Fitzpatrick JJ (2014) Quantifying the effects of nutrient loading on dissolved O2 cycling and hypoxia in Chesapeake Bay using a coupled hydrodynamic–biogeochemical model. J Mar Syst 139:139–158. https://doi.org/10.1016/j.jmarsys.2014.05.018
Thouvenin B, Le Hir P, Romana LA (1994) Dissolved oxygen model in the Loire Estuary. In: Dyer KR, Orth RJ (eds) Changes in fluxes in estuaries: implications from science to management. Olsen & Olsen, Fredensburg, pp 169–178
Tinsley D (1998) The Thames estuary: a history of the impact of humans on the environment and a description of the current approach to environmental management. In: Attrill M (ed) A rehabilitated estuarine ecosystem SE - 2. Springer US, New York, pp 5–26
Uncles RJ, Elliott RDC, Weston SA (1985) Observed fluxes of water, salt and suspended sediment in a partly mixed estuary. Estuar Coast Shelf Sci 20:147–167. https://doi.org/10.1016/0272-7714(85)90035-6
Van Maanen B, Sottolichio A (2018) Hydro- and sediment dynamics in the Gironde estuary (France): sensitivity to seasonal variations in river inflow and sea level rise. Cont Shelf Res 165:37–50. https://doi.org/10.1016/j.csr.2018.06.001
Vanderborght J-P, Folmer IM, Aguilera DR, Uhrenholdt T, Regnier P (2007) Reactive-transport modelling of C, N, and O2 in a river–estuarine–coastal zone system: application to the Scheldt estuary. Mar Chem 106:92–110. https://doi.org/10.1016/j.marchem.2006.06.006
Vaquer-Sunyer R, Duarte CM (2008) Thresholds of hypoxia for marine biodiversity. Proc Natl Acad Sci U S A 105:15452–15457. https://doi.org/10.1073/pnas.0803833105
Veyssy E (1998) Transferts de matière organiques das bassins versants aux estuaires de la Gironde et de l’Adour (Sud-Ouest de la France). Université de Bordeaux, Bordeaux
Wild-Allen K, Herzfeld M, Thompson P a, Thompson PA, Rosebrock U, Parslow J, Volkman JK (2009) Applied coastal biogeochemical modelling to quantify the environmental impact of fish farm nutrients and inform managers. J Mar Syst 81:134–147. https://doi.org/10.1016/j.jmarsys.2009.12.013
Willmott CJ (1982) Some comments on the evaluation of model performance. Bull Am Meteorol Soc 63:1309–1313
Winterwerp JC, Wang ZB, van Braeckel A, et al (2013) Man-induced regime shifts in small estuaries---II: a comparison of rivers. Ocean Dyn 63:1293–1306. https://doi.org/10.1007/s10236-013-0663-8
Zhao W, Zhu X, Sun X, Shu Y, Li Y (2015) Water quality changes in response to urban expansion: spatially varying relations and determinants. Environ Sci Pollut Res 22:16997–17011. https://doi.org/10.1007/s11356-015-4795-x
Acknowledgments
The authors are grateful to the MAGEST network for the availability of data and to the SGAC and Bordeaux Metropole for providing urban effluent data and fruitful discussions.
Funding
This study was funded by the Aquitaine Region (DIAGIR project) and LyRE (SUEZ research center) who co-sponsored a PhD grant to K. Lajaunie-Salla. This work was also supported by the Cluster of Excellence COTE at the Université de Bordeaux (ANR-10-LABX-45). This work was supported by the Avakas cluster resources of the Mésocentre de Calcul Intensif Aquitain (MCIA) of the University of Bordeaux.
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Lajaunie-Salla, K., Sottolichio, A., Schmidt, S. et al. Future intensification of summer hypoxia in the tidal Garonne River (SW France) simulated by a coupled hydro sedimentary-biogeochemical model. Environ Sci Pollut Res 25, 31957–31970 (2018). https://doi.org/10.1007/s11356-018-3035-6
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DOI: https://doi.org/10.1007/s11356-018-3035-6