Time series dataset of mussels (Dreissena sp.) veligers densities in Lake Geneva from 2006 to 2019.

Lainé, Leslie; Anneville, O.; Rasconi, Serena; Dennis, S.; Haltiner, Linda; Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques  ; Université Savoie Mont Blanc -Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement -Observatoire des Sciences de l'Univers de Grenoble

Time series dataset of mussels (Dreissena sp.) veligers densities in Lake Geneva from 2006 to 2019.

2022

Lainé, Leslie | Anneville, O. | Rasconi, Serena | Dennis, S. | Haltiner, Linda | Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL) ; Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Observatoire des Sciences de l'Univers de Grenoble (Fédération OSUG)

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English. Data description: Data were extracted from the OLA observatory (© SOERE OLA-IS, INRA of Thonon-les-Bains, SILA, [1974-2016], developed by the Eco-Informatique ORE system of the INRA) in April 2020. Data consists in Dreissena sp. veligers density (individual/m2) estimated in the pelagic area of Lake Geneva from 2006 to 2019. These data have been used in the paper by Haltiner et al. 2022. Data acquisition: Samples were collected at a pelagic station, SHL2, in Lake Geneva (France-Switzerland) according to the protocols described in Rimet et al. https://doi.org/10.4081/jlimnol.2020.1944 . Dreissena veligers were collected using a 200µm plankton net during a vertical tow from 50m to the surface. The samples were preserved in a 5% buffered formaldehyde solution. Data processing: Data were processed according to the protocols described in Rimet et al. https://doi.org/10.4081/jlimnol.2020.1944. Veligers were identified and individuals were enumerated in sub-samples that contains at least 0.1ml zooplankton. Veligers abundances were given as the number of individuals per square meter and were their densities were calculated by using the formula: Veliger abundance = N_SubSample×V_Sample/V_SubSample ×H_filtred/V_filtred Where N_SubSampleis the number of veligers in the sub-sample, V_(Sample )is the volume of the sample, V_SubSample is the volume of the sub-sample, H_filtredis the height of the sampled water column (50m) and V_filtred is the volume of water filtered by the net (4.81m3).

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