Lack of evidence for elevated CO2-induced bottom-up effects on marine copepods: a dinoflagellate-calanoid prey-predator pair ...

• Main Authors: Isari, Stamatina, Zervoudaki, Soultana, Peters, J, Papantoniou, Georgia, Pelejero, Carles, Saiz, Enric
• Format: Dataset
• Language: English
• Published: PANGAEA 2016
• Subjects: Acartia grani; Animalia; Arthropoda; Behaviour; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria <20 L; Chromista; Growth/Morphology; Heterocapsa sp.; Laboratory experiment; Laboratory strains; Myzozoa; Not applicable; Pelagos; Phytoplankton; Reproduction; FOS Medical biotechnology; Single species; Zooplankton; Figure; Table; Species; Treatment; Time in days; Cell density; Cells equivalent spherical diameter; Clearance rate; Clearance rate, standard deviation; Ingestion rate per individual; Ingestion rate, standard deviation; Egg production rate per female; Egg production rate, standard deviation; Carbon ingestion rate per individual; Carbon ingestion rate, standard deviation; Nitrogen ingestion rate per individual; Nitrogen ingestion rate, standard deviation; Phosphorus ingestion rate per individual; Phosphorus ingestion rate, standard deviation; Gross growth efficiency; Gross growth efficiency, standard deviation; Cell biovolume; Cell biovolume, standard deviation; Carbon per cell; Carbon per cell, standard deviation; Nitrogen per cell; Nitrogen per cell, standard deviation; Phosphorus per cell; Phosphorus per cell, standard deviation; Carbon/Nitrogen ratio; Carbon/Nitrogen ratio, standard deviation; Ocean acidification; Copepods
• Online Access: https://dx.doi.org/10.1594/pangaea.848379; https://doi.pangaea.de/10.1594/PANGAEA.848379

Rising levels of atmospheric CO2 are responsible for a change in the carbonate chemistry of seawater with associated pH drops (acidification) projected to reach 0.4 units from 1950 to 2100. We investigated possible indirect effects of seawater acidification on the feeding, fecundity, and hatching success of the calanoid copepod Acartia grani, mediated by potential CO2-induced changes in the nutritional characteristics of their prey. We used as prey the autotrophic dinoflagellate Heterocapsa sp., cultured at three distinct pH levels (control: 8.17, medium: 7.96, and low: 7.75) by bubbling pure CO2 via a computer automated system. Acartia grani adults collected from a laboratory culture were acclimatized for 3 d at food suspensions of Heterocapsa from each pH treatment (ca. 500 cells/ml; 300 mg C/l). Feeding and egg production rates of the preconditioned females did not differ significantly among the three Heterocapsa diets. Egg hatching success, monitored once per day for the 72 h, did not reveal significant ... : 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 2015-07-16. ...