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French situation concerning the Mediterranean GIG / Round 2 Exercise Phytobenthos in Rivers

Abstract : The present meeting, set up at the request of the coordinator of the 2nd "Phytobenthos Rivers " Iintercalibration Round of MED-GIG (S. Almeida, PT) has been organized by the CARMA Research Team of Cemagref de Bordeaux from 07 to 09-01 -2009. Being the 1st meeting organized within the framework of this new collective exercise, important points of the agenda were that each member country wishing to participate in the exercise : 1) made a summary presentation of its national evaluation system; 2) made the state of the national data available for the exercise ; and 3) if necessary, it addresses certain particularities or specificities encountered in its country, that may require a collective methodological discussion. In this context, Cemagref's presentation first touched on certain aspects of the construction of the French diatom evaluation system, in particular the biotypological approach which made it possible to identify the structuring of 5 natural communities of diatoms. This biotypological identification could then be delimited on the map and brought back into coherence with adequate groupings of HERs previously determined by another Cemagef team, on the basis of different categories of only abiotic descriptors. At this occasion, the ECOSTAT typology proposed for carrying out the intercalibration exercise, unsatisfactory in the French context, was also discussed. A quantitative point about the French data available by type of rivers during the 1st GIG exercise, then for the realization of this 2nd Round, was then presented, as well as the precise geographical location of the French sites participating to this 2nd exercise (all located in the south-eastern part of France. Finally, a last slide presented the methodology and principles followed by France for the construction of its regionalized EQRs.
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https://hal.inrae.fr/hal-02610332
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Submitted on : Saturday, May 16, 2020 - 7:39:00 PM
Last modification on : Thursday, June 3, 2021 - 5:34:03 PM

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  • HAL Id : hal-02610332, version 1
  • IRSTEA : PUB00064458

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François Delmas, Juliette Tison-Rosebery, Y.S. Park, J.G. Wasson, Michel Coste. French situation concerning the Mediterranean GIG / Round 2 Exercise Phytobenthos in Rivers. Mediterranean GIG / Round 2 Meeting of Bordeaux, Jan 2009, Cestas, France. pp.14. ⟨hal-02610332⟩

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