Florentina Moatar


Structure : UFR de Sciences et Techniques
> Département Géosciences environnement
> Laboratoire GéoHydrosystèmes COntinentaux
Courriel : florentina.moatar_at_univ-tours.fr
Localisation : Convention d'accueil avec l IRSTEA à Lyon
Téléphone : +(33) 02 47 36 73 16
Fax :

+(33) 02 47 36 70 90

For the last 20 years, Florentina Moatar is working on hydrology and water quality of river systems and more specifically on the Loire River Basin. She is interested on the mechanistic modeling of water temperature and its evolution under climate change. She is also working on water quality modeling using physically based models and statistical approaches. Using statistical methods, she analyzes the spatial and temporal (trend and seasonality) variability and uncertainty of stream nutrient fluxes and develops software tools for designing appropriate water sampling strategies. Citations 1050; h-index 18


Spatialisation des régimes thermiques des cours d’eau dans un contexte de changement climatique à l’échelle des bassins versants. Trois objectifs principaux : 1) comprendre les différents facteurs de contrôle (morphologie, climat, végétation..) à une échelle régionale, 2) étudier les processus qui gouvernent le régime thermique des rivières (échanges nappes-rivières, bilan énergétique, végétation…) à l'échelle de la station , 3) Simuler les évolutions thermiques des cours d’eau au XXIème siècle en fonction de projections climatiques et hydrologiques pour un ensemble de bassins à fonctionnement hydrologique contrasté (Seine, Loire, Somme).
Evolution long-terme des métriques (concentrations et flux) de qualité des cours d’eau (azote, phosphore, matières en suspension, ions majeurs) à l’échelle de la France. Il s’agit 1) de proposer des méthodes de détermination des métriques et de leurs incertitudes à partir des suivis discrets  2) d’exploiter cette méthodologie pour analyser le lien entre l’évolution temporelle des impacts observés et celle des pressions à l’échelle de la France pour l’azote, le phosphore, les MES ainsi que certains ions majeurs indicateurs de pollution industrielle.
Impacts croisés du changement climatique et des activités humaines sur l’hydrologie et la qualité des cours d’eau du bassin de la Loire. Deux analyses sont menées conjointement de façon spatiale et de manière couplée (hydrologie et qualité physico-chimique) : d’une part sur le temps présent, d’autre part par analyse des impacts des scénarios climatiques, de façon continue jusqu’à l’horizon 2100.



Pinay, G., Gascuel, C., Menesguen, A., Souchon, Y., Le Moal, M., Levain, A., F. Moatar, A. Pannard & Souchu, P. (2017). L’eutrophisation: manifestations, causes, conséquences et prédictibilité. Synthèse de l’Expertise scientifique collective CNRS-Ifremer-INRA-Irstea. http://www.cnrs.fr/inee/communication/breves/docs/Eutrophisation_synthese.pdf


Minaudo, C., Dupas, R., Gascuel‐Odoux, C., Fovet, O., Mellander, P. E., Jordan, P., ... & Moatar, F. (2017). Nonlinear empirical modeling to estimate phosphorus exports using continuous records of turbidity and discharge. Water Resources Research, 53(9), 7590-7606.


Moatar, F., Abbott, B. W., Minaudo, C., Curie, F., & Pinay, G. (2017). Elemental properties, hydrology, and biology interact to shape concentration‐discharge curves for carbon, nutrients, sediment, and major ions. Water Resources Research, 53(2), 1270-1287.


Poisvert, C., Curie, F., & Moatar, F. (2017). Annual agricultural N surplus in France over a 70-year period. Nutrient Cycling in Agroecosystems, 107(1), 63-78.


Baratelli F, N. Flipo, F. Moatar, 2016. Estimation of stream-aquifer exchanges at regional scale using a distributed model: sensitivity to in-stream water level fluctuations, riverbed elevation and roughness. Journal of Hydrology, http://dx.doi.org/10.1016/j.jhydrol.2016.09.041


de Lavenne A, Skoien J.O., Cudennec C., Curie F. and F. Moatar. 2016. Transferring measured discharge time series: Large-scale comparison of Top-kriging to geomorphology-based inverse modeling. Water Rersour. Res. 52, doi: 10.1002/2016WR018716


Beaufort A, Curie F, Moatar F, Ducharne A, Melin E, D. Thiery (2016). T-NET, a dynamic model for simulating daily stream temperature at the regional scale based on a network topology. Hydrological Processes, Vol. 30, Issue 13, pages 2196–2210, doi 10.1002/hyp.10787;


Minaudo C, F Moatar, A Coynel, H Etcheber, N Gassama, F Curie (2016). Using recent high-frequency surveys to reconstitute 35 years of organic carbon variations in a eutrophic lowland river. Environmental monitoring and assessment. Vol 188 : 1-17


E Lalot, F Curie, V Wawrzyniak, F Baratelli, S Schomburgk, N Flipo, H Piegay, F Moatar (2015). Quantification of the contribution of the Beauce groundwater aquifer to the discharge of the Loire River using thermal infrared satellite imaging. Hydrology and Earth System Sciences. Volume 19, Issue 11, Pages 4479-4492


C Minaudo, M Meybeck, F Moatar, N Gassama, F Curie (2015). Eutrophication mitigation in rivers: 30 years of trends in spatial and seasonal patterns of biogeochemistry of the Loire River (1980–2012). Biogeosciences, Volume 12, Issue 8, Pages 2549-2563


A Beaufort, F Moatar, F Curie, Agnès Ducharne, V Bustillo, Dominique Thiéry (2015) River temperature modelling by Strahler order at the regional scale in the Loire River basin, France River Research and Applications, DOI: 10.1002/rra.2888


Dupas, R., Delmas, M., Dorioz, J.M., Garnier, J., Moatar, F., Gascuel-Odoux. C, (2015). Assessing the impact of agricultural pressures on N and P loads andeutrophication risk. Ecological Indicators 48 : 396–407


Latapie A, Camenen B., Rodrigues S., Paquier A., Bouchard J.P., Moatar F. (2014). Assessing channel response of a long river influenced by human disturbance. Catena n° 124 : 1 – 12.


Bustillo V, Moatar F, Ducharne A, Thiéry D, Poirel. A. (2014). A multimodel comparison for assessing water temperatures under changing climate conditions via the equilibrium temperature concept: case study of the Middle Loire River, France. Hydrological processes. Vol 28, issue 3, 1507-1524 Doi: 10.1002/hyp.9683.


Beaufort, A., V. Bustillo, C. Curie, F. Moatar, A. Ducharne and D. Thiery. (2013). Water temperature sensitivity under climatic change: comparison between mountain and lowland rivers in the Loire basin. In B. Arheimer (ed.): Understanding Freshwater Quality Problems in a Changing World, p321-328, IAHS Publication 361, Wallingford, UK.


Minaudo, C., F. Moatar, M. Meybeck, Curie F., Gassama N, Leitao M. (2013). Loire River eutrophication mitigation (1981–2011) measured by seasonal nutrients and algal pigments. In B. Arheimer (ed.): Understanding Freshwater Quality Problems in a Changing World, p167-174, IAHS Publication 361, Wallingford, UK.


Raymond, Sébastien, Alain Mailhot, Guillaume Talbot, Patrick Gagnon, Alain N. Rousseau, and Florentina Moatar, (2013). Load Estimation Method Using Distributions with Covariates: A Comparison with Commonly Used Estimation Methods. Journal of the American Water Resources Association (JAWRA) 1-14. DOI: 10.1111/jawr.12147


Raymond, S., Moatar, F., Meybeck, M., and Bustillo, V., (2013). Choosing methods for estimating dissolved and particulate riverine fluxes from monthly sampling. Hydrological Sciences Journal, 58 (6), 1–14.


Dupas R, Curie F, Gascuel-Odoux C, Moatar F, Delmas M, Parnaudeau V, Durand P (2013). Assessing N emissions in surface water at the national level : Comparison of contry-wide vs. regionaliszed models. Science of the Total Environment 443: 152-162.


Néméry J, Mano V, Coynel A, Etcheber H, Moatar F, Meybeck M, Belleudy Ph, Poirel A. (2013). Carbon and suspended sediment transport in an impounded alpine river (Isère, France). Hydrological processes. Vol. 27 : 2498-2508. DOI: 10.1002/hyp.9387


Moatar F, Meybeck M, Raymond S, Birgand F, Curie F. 2013. River flux uncertainties predicted by hydrological variability and riverine material behavior. Hydrological processes. 27, 3535-3546, DOI: 10.1002/hyp.9464


S. Rodrigues, F. Moatar and N. Claude (2012). Sediment transport in Encyclopedia of Environmetrics Second Edition, A.-H. El-Shaarawi and W. Piegorsch (eds). John Wiley & Sons Ltd, Chichester, UK, pp. 2398-2413. DOI 10.1002/9780470057339.vas010.pub2.


Meybeck M, Moatar F. 2012. Daily variability of river concentrations and fluxes: indicators based on the segmentation of the rating curve. Hydrological Processes 26: 1188-1207


Birgand F, Faucheux C, Gruau G, Moatar F, Meybeck M. 2011. Uncertainties in assessing annual nitrate loads and concentration indicators : Part 2. Deriving sampling frequency charts in Brittany, France. Transaction of American Society of Agricultural and Biological Engineers, vol 54(1): 93-104.

Birgand F, Faucheux C., Gruau G., B. Augeard, Moatar F, Bordenave P. 2010. Uncertainties in assessing annual nitrate loads and concentration indicators: Part 1: Impact of sampling frequency and load estimation algorithm. Transaction of American Society of Agricultural and Biological Engineers, vol 53(2): 437-446.


Tramblay Y, Saint-Hilaire A, Taha B.M.J.O, Moatar F, Hecht B 2010. Estimation of local extreme suspended sediment concentrations in California Rivers. Science of The Total Environment, vol 408, 19: 4221-4229.

Moatar F, A. Ducharne, D. Thiery, V. Bustillo, E. Sauquet, J-Ph Vidal. 2010. La Loire à l’épreuve du changement climatique. Géosciences n°12, numero special La Loire, agent géologique : 78-87

Grosbois C, Breheret J-G, Moatar F, Négrel Ph. 2010. La Loire, usine à carbonates. Géosciences n°12, numero special La Loire, agent géologique :54-60

Latapie A, Camenen B, Paquier A, Rodrigues S, Moatar F., Bouchard J.P. 2010. Morphological evolution of the Middle Loire River (France). Definition of geomorphic homogeneous river reaches. River, Coastal and Estuarine Morphodynamics, RCEM 2009 - Vionnet et. Al (eds). Taylor and Francis Group London, pp: 43-48.

F. Moatar, F. Birgand, M. Meybeck, S. Raymond 2009. Stratégies d’échantillonnage et incertitudes sur l’évaluation des flux de nutriments (dissous et totaux) et des indicateurs de concentration à partir des suivis discrets tels qu’employés dans le cadre du RNB, La Houille Blanche n°3 : 68-76

Moatar F, Meybeck M, Poirel A, 2009. Variabilité journalière de la qualité des rivières et son incidence sur la surveillance à long terme : exemple de la Loire Moyenne. Daily variability and its implication on long term river water quality surveys : the middle Loire example. La Houille Blanche n°4 : 91-100

Birgand F, Faucheux C, Gruau G, Augeard B, Moatar F, Meybeck M, Bouedo A, Bordenave P 2009. Une approche quantitative du rôle de la fréquence d’échantillonnage sur les incertitudes associées aux calculs des flux et des concentrations moyennes en nitrate en Bretagne. Ingénierie Eau Territoires Agriculture, vol 59-60, 23-37

Moatar F, Meybeck M, Raymond S, Coynel A, Ludwig W., Mano V, Nemery J, Poirel A, Etcheber H, Crouzet Ph 2008. Evaluation des flux de MES à partir des suivis discrets: méthodes de calcul et incertitude. La Houille Blanche n°4 : Transports solides et gestion des sédiments en milieux naturels et urbains, pp : 64- 71.

Boisneau C., Moatar F., Bodin M., Boisneau Ph. 2008. Effect of global warming on migration pattern and interannual variability in the recruitment of young of the year of Allis shad in the Loire River. Hydrobiologia 588 :245-259.

Etcheber H., Taillez A., Abril G., Garnier J., Servais P., Moatar F., Commarieu M-V. 2007 - Particulate organic carbon in the Estuarine Turbidity Maxima of the Gironde, Loire and Seine Estuaries : origin and lability. Hydrobiologia 588:245-259

Moatar F., Meybeck M. 2007. Riverine fluxes of pollutants: towards predictions of uncertainties by flux duration descriptor. C.R. Geoscience, Hydrology-Hydrogeology. 339: 367-382

Moatar F., J. Gailhard 2006. Water temperature behaviour in the River Loire since 1976 and 1881. C.R. Geosciences (Hydrology-Hydrogeology). 338: 319-328.

Moatar F., Person G., Meybeck M., Coynel A., Etcheber H. et Crouzet Ph 2006. The influence of contrasting suspended particulate matter transport regimes on the bias and precision of flux estimates. Science of the Total Environment 370: 515-531.

Rodrigues, S., Bréhéret, J.G., Macaire, J.J., Moatar, F., Nistoran, D., Jugé, P. 2006- Flow and sediment dynamics in the vegetated secondary channels of an anabranching river: the Loire River (France). Sedimentary Geology, 186(1-2), 89-109.

Mano V, Moatar F, Coynel A, Etcheber H., Ludwig W, Meybeck M, Nemery J., Poirel A, Blanc G, Schafer J. 2006. Space and time variability of suspended particulate matter (SPM) transport in 32 French rivers (100 to 100 000 km²; daily to yearly). In “Sediment dynamics and hydromorphology of fluvial systems”, ICCE IAHS International Symposium, 3-7 July 2006, Dundee, Scotland, (Poster Report Booklet), pp 29-37.

Rodrigues S., Bréhéret J.-G., Moatar F., Macaire J.-J. 2005 - Impact des crues sur les bilans sédimentaires de chenaux secondaires de la Loire moyenne (France). C. R. Géosciences, 337, 487-495.

Moatar F. 2005 pH modelling by ANN in the eutrophic Middle Loire river. Chapter 8, In S. Lingireddy and G.M. Brion Ed. “Artificial Neural Networks in Water Supply Engineering”, American Society of Civil Engineers (ASCE) Pub., 97-106.

Moatar F. and Meybeck M. 2005 - Compared performances of different algorithms for estimating annual nutrient loads discharged by the eutrophic river Loire. Hydrological Processes, 19, 429-444.

Moatar F., Miquel J., Poirel A. 2001. A quality control method for physical and chemical monitoring data. Application to dissolved oxygen levels in the river Loire (France). Journal of Hydrology. Vol. 252 (1-4), 25-36.

Moatar F., Fessant F., Poirel A. 1999. pH modelling by neural networks. Application of control and validation data series in the Middle Loire river. Ecological Modelling 120, pp: 141-156.

Moatar F., Poirel A, Obled Ch. 1999. Analyse de séries temporelles de mesures de l’oxygène dissous et du pH sur la Loire au niveau du site nucléaire de Dampierre (Loiret) : 1. Compréhension des variations temporelles des teneurs en oxygène dissous et du pH en relation avec des données hydrométéorologiques. Hydroécologie Appliquée, Tome ½, vol. 11, pp 127-151

Drogue G., Moatar F, Najjar G 1998. Critique et modélisation de séries chronologiques de température de l’air et de rayonnement global en l’absence de station de référence. Publications de l’Association Internationale de Climatologie, vol. 11, pg. 241-249

Université de Tours Faculté de sciences et techniques