Skip to Main content Skip to Navigation
Journal articles

Benthic diatom communities in high altitude lakes: a large scale study in the French Alps

Abstract : Altitude lakes are weakly impacted by human activities. This makes them choice ecosystems to understand how biological communities are impacted by natural factors. This question was addressed to littoral benthic diatoms, a largely used ecological indicator. We wanted to know if benthic diatoms in lakes are more impacted by local varying factors (altitude, lake depth...) or regional varying factors (geology). The study area takes place in the Northern French Alps. Littoral benthic diatoms of 63 natural lakes situated between 1350 and 2700 m · a.s.l. were sampled. Two categories of communities were observed: one of deep and lower altitude lakes and one of higher altitude and shallower lakes. In each category, communities were characterized and were corresponding to particular lake types: lakes dominated by a particular geology, lakes with a water level fluctuation, turbid lakes,... Communities did not show a spatial structure. We observed that local factors were more important than regional factors. Indeed, the study area displayed a mixed geology even at a local level. On another hand, altitude a local varying factor determines freezing period a determining item of high-altitude lake functioning.
Complete list of metadata

Cited literature [97 references]  Display  Hide  Download

https://hal.inrae.fr/hal-02619291
Contributor : Migration Prodinra <>
Submitted on : Monday, May 25, 2020 - 4:37:51 PM
Last modification on : Friday, July 2, 2021 - 2:08:12 PM

File

Feret_2017_Ann Limnol_1.pdf
Publisher files allowed on an open archive

Licence


Copyright

Identifiers

Collections

Citation

Léa Féret, Agnes Bouchez, Frédéric Rimet. Benthic diatom communities in high altitude lakes: a large scale study in the French Alps. Annales de Limnologie - International Journal of Limnology, EDP sciences, 2017, 53, pp.411-423. ⟨10.1051/limn/2017025⟩. ⟨hal-02619291⟩

Share

Metrics

Record views

65

Files downloads

136