Ocean acidification affects growth but not nutritional quality of the seaweed Fucus vesiculosus (Phaeophyceae, Fucales) ...

• Main Authors: Gutow, Lars, Rahman, Mohammed Mofizur, Bartl, Kevin, Saborowski, Reinhard, Bartsch, Inka, Wiencke, Christian
• Format: Dataset
• Language: English
• Published: PANGAEA 2014
• Subjects: Animalia; Arthropoda; Behaviour; Benthic animals; Benthos; Bottles or small containers/Aquaria <20 L; Chromista; Coast and continental shelf; Fucus vesiculosus; Growth/Morphology; Idotea balthica; Idotea emarginata; Laboratory experiment; North Atlantic; Ochrophyta; Pelagos; Phytoplankton; Respiration; Salinity; Species interaction; Temperate; Temperature; Species; Experiment; Figure; Temperature, water; Treatment; Replicate; Incubation duration; Mass; Carbon/Nitrogen ratio; Carbon/Phosphorus ratio; Nitrogen/Phosphorus ratio; Food consumption; Respiration rate, oxygen; pH; pH, standard deviation; Salinity, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; Carbon dioxide; Carbon dioxide, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Bicarbonate ion; Bicarbonate ion, standard deviation; Carbonate system computation flag; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.835334; https://doi.pangaea.de/10.1594/PANGAEA.835334

Understanding the ecological implications of global climate change requires investigations of not only the direct effects of environmental change on species performance but also indirect effects that arise from altered species interactions. We performed CO2 perturbation experiments to investigate the effects of ocean acidification on the trophic interaction between the brown seaweed Fucus vesiculosus and the herbivorous isopod Idotea baltica. We predicted faster growth of F. vesiculosus at elevated CO2-concentrations and higher carbon content of the algal tissue. We expected that I. baltica has different consumption rates on algae that have been grown at different CO2 levels and that the isopods remove surplus carbon metabolically by enhanced respiration. Surprisingly, growth of F. vesiculosus as well as the C:N-ratio of the algal tissue were reduced at high CO2-levels. The changes in the elemental composition had no effect on the consumption rates and the respiration of the herbivores. An additional ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne et al, 2014) 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 2014-08-28. ...