Effects of in situ CO2 enrichment on epibiont settlement on artificial substrata within a Posidonia oceanica meadow ...

• Main Authors: Cox, T Erin, Díaz-Castañeda, Victoria, Martin, Sophie, Alliouane, Samir, Mahacek, Paul, Le Fur, Arnaud, Gattuso, Jean-Pierre, Gazeau, Frédéric
• Format: Dataset
• Language: English
• Published: PANGAEA 2017
• Subjects: Benthos; Coast and continental shelf; Entire community; Field experiment; Growth/Morphology; Mediterranean Sea; Mesocosm or benthocosm; Reproduction; FOS Medical biotechnology; Soft-bottom community; Temperate; Type; Treatment; Identification; Family; Phylum; Individuals; Individuals, standard deviation; Taxon/taxa; Duration; Coverage; Coverage, standard deviation; Proportion; Alkalinity, total; pH; pH, standard deviation; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; Calcite saturation state; Calcite saturation state, standard deviation; Aragonite saturation state; Aragonite saturation state, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Temperature, water; Temperature, water, standard deviation; Salinity; Salinity, standard deviation; Oxygen; Oxygen, standard deviation; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Experiment; Potentiometric titration; Spectrophotometric; Calculated using seacarb; Calculated using seacarb after Nisumaa et al. 2010; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.903033; https://doi.pangaea.de/10.1594/PANGAEA.903033

Alterations to colonization or early post-settlement stages may cause the reorganization of communities under future ocean acidification conditions. Yet, this hypothesis has been little tested by in situ pH manipulation. A Free Ocean Carbon Dioxide Enrichment (FOCE) system was used to lower pH by a 0.3 unit offset within a partially enclosed portion (1.7 m**3) of a Posidonia oceanica seagrass meadow (11 m depth) between 21 June and 3 November 2014. Epibiont colonization and early post settlement stages were assessed within the FOCE setup, as part of the larger community-level study, to better understand the outcome for a multispecies assemblage and the ecological processes that result in reported community shifts under altered carbonate chemistry. Two types of artificial collectors (tiles and scourers) were placed within three treatments: a pH-manipulated enclosure, an un-manipulated control enclosure, and an open plot in the ambient meadow. Tiles and scourers were collected after one to four months. ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2015) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation is 2016-07-01. ...