The Observatory on LAkes (OLA) database: Sixty years of environmental data accessible to the public

The Observatory on LAkes (OLA) database

  • Frédéric Rimet | UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Orlane Anneville UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Denis Barbet UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Cécile Chardon UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Laura Crépin UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Isabelle Domaizon UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Jean-Marcel Dorioz UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Laurent Espinat UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Victor Frossard UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Jean Guillard UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Chloé Goulon UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Valérie Hamelet UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Jean-Christophe Hustache UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Stéphan Jacquet UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Leslie Lainé UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Bernard Montuelle UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Pascal Perney UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Philippe Quetin UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Serena Rasconi UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Antoine Schellenberger US 1106 Infosol, INRA, Orléans, France.
  • Viet Tran-Khac UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.
  • Ghislaine Monet UMR CARRTEL, INRA, Université de Savoie Mont-Blanc, Thonon-les-Bains, France.


Lakes are essential ecosystems that provide a large number of ecosystem services whose quality is strongly impacted by human pressures. Optimal uses of lakes require adapted management practices which in turn rely on physico-chemical and biological monitoring. Long-term ecological monitoring provides large sets of environmental data. When such data are available, they have to be associated to metadata and to be stored properly to be accessible and useable by the scientific community. We present a data informatics system accessible to anyone who requests it. Maintained online since 2014 (, it is originated from the Observatory on LAkes (OLA). It contains long-term data from 4 peri-alpine lakes (Lakes Aiguebelette, Annecy, Bourget, Geneva/Léman) and 24 high-altitude lakes of the northern French Alps. We describe the generated long-term data series, the data type, the methodologies and quality control procedures, and the information system where data are made accessible. Data use is allowed under the condition of providing reference to the original source. We show here how such a platform clearly enhances data sharing and scientific collaboration. Various studies referring to these data are regularly published in peer-reviewed journals; providing in fine a better understanding of lakes’ ecosystems functioning under local and global pressures.



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Original Articles
Edited By
Aldo Marchetto, CNR-IRSA, Verbania, Italy
Supporting Agencies
physico-chemical parameters, phytoplankton, zooplankton, eutrophication, transparency, climate change
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How to Cite
Rimet F, Anneville O, Barbet D, Chardon C, Crépin L, Domaizon I, Dorioz J-M, Espinat L, Frossard V, Guillard J, Goulon C, Hamelet V, Hustache J-C, Jacquet S, Lainé L, Montuelle B, Perney P, Quetin P, Rasconi S, Schellenberger A, Tran-Khac V, Monet G. The Observatory on LAkes (OLA) database: Sixty years of environmental data accessible to the public: The Observatory on LAkes (OLA) database. J Limnol [Internet]. 2020Feb.27 [cited 2021May19];79(2). Available from: