Etude des impacts engendrés par le jumelage de l'autoroute A4 et de la LGV-Est sur la biodiversité

Abstract : This study, implemented in the framework of ITTECOP project, is the result of a follow-up of three taxa (flora, reptile and lepidoptera) in order to better understand the impacts of twinning railway (LGV-Est) and highway (A4) on biodiversity. The surveys were conducted in three kinds of configurations: outside the railway, inside small isolates between the two infrastructures and inside wider isolates. Through this study, several results have been highlighted. Concerning the flora, plant communities differ in their Grime's strategy depending on their proximity to the highway. There are more species of CR type further away from the highway (ISOL and LGV stations). This work also shows that lepidopteras do not seem affected by the transport infrastructures. Concerning reptiles, this study did not draw conclusions about the impact of the twinning on the populations of reptiles due to the small number of observations. Nevertheless, we can affirm that isolates offer potential habitat for reptiles. Finally, this study did not determine whether the populations in isolates come from migrations or were present before the match. A long-term monitoring would be useful, particularly in terms of population genetics in the isolates to determine whether there is a risk of inbreeding. The impacts of the twinning in this study are limited and the matching seems to be a good compromise between mobility and biodiversity.
Document type :
Master thesis
File URL :
http://docnum.univ-lorraine.fr/prive/BUS_M_2013_UYTTENHOVEN_CHARLES.pdf
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https://hal.univ-lorraine.fr/hal-01778772
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Submitted on : Thursday, April 26, 2018 - 8:57:48 AM
Last modification on : Friday, April 27, 2018 - 1:13:56 AM

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Charles Uyttenhoven. Etude des impacts engendrés par le jumelage de l'autoroute A4 et de la LGV-Est sur la biodiversité. Sciences de l'environnement. 2013. ⟨hal-01778772⟩

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