Vehmaa, Anu; Almén, Anna-Karin; Brutemark, Andreas; Paul, Allanah; Riebesell, Ulf; Furuhagen, Sara; Engström-Öst, Jonna (2016): KOSMOS Finland 2012 mesocosm study: Acartia sp. egg production rate, adult female size, adult female antioxidant capacity, and egg-hatching succes and nauplii development index of the egg transplant experiment. PANGAEA, https://doi.org/10.1594/PANGAEA.867662, Supplement to: Vehmaa, A et al. (2016): Ocean acidification challenges copepod phenotypic plasticity. Biogeosciences, 13(22), 6171-6182, https://doi.org/10.5194/bg-13-6171-2016
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Ocean acidification is challenging phenotypic plasticity of individuals and populations. Calanoid copepods (zooplankton) are shown to be fairly plastic against altered pH conditions, and laboratory studies indicate that transgenerational effects are one mechanism behind this plasticity. We studied phenotypic plasticity of the copepod Acartia sp. in the course of a pelagic, large-volume mesocosm study that was conducted to investigate ecosystem and biogeochemical responses to ocean acidification. We measured copepod egg production rate, egg-hatching success, adult female size and adult female antioxidant capacity (ORAC) as a function of acidification (fCO2 ~ 365-1231 µatm) and as a function of quantity and quality of their diet. We used an egg transplant experiment to reveal whether transgenerational effects can alleviate the possible negative effects of ocean acidification on offspring development. We found significant negative effects of ocean acidification on adult female size. In addition, we found signs of a possible threshold at high fCO2, above which adaptive maternal effects cannot alleviate the negative effects of acidification on egg-hatching and nauplii development. We did not find support for the hypothesis that insufficient food quantity (total particulate carbon < 55 µm) or quality (C : N) weakens the transgenerational effects. However, females with high-ORAC-produced eggs with high hatching success. Overall, these results indicate that Acartia sp. could be affected by projected near-future CO2 levels.
Paul, Allanah; Schulz, Kai Georg; Achterberg, Eric Pieter; Hellemann, Dana; Nausch, Monika; Boxhammer, Tim; Bach, Lennart Thomas; Trense, Yves (2016): KOSMOS Finland 2012 mesocosm study: carbonate chemistry, particulate and dissolved matter pools, and phytoplankton community composition using marker pigments (CHEMTAX). PANGAEA, https://doi.org/10.1594/PANGAEA.863032
Latitude: 59.858330 * Longitude: 23.258330
Date/Time Start: 2012-06-12T00:00:00 * Date/Time End: 2012-06-12T00:00:00
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- Vehmaa, A; Almén, A-K; Brutemark, A et al. (2016): KOSMOS Finland 2012 mesocosm study: Acartia sp. adult female antioxidant capacity (ORAC). https://doi.org/10.1594/PANGAEA.867751
- Vehmaa, A; Almén, A-K; Brutemark, A et al. (2016): KOSMOS Finland 2012 mesocosm study: Acartia sp. egg production rate and adult female size. https://doi.org/10.1594/PANGAEA.867660
- Vehmaa, A; Almén, A-K; Brutemark, A et al. (2016): KOSMOS Finland 2012 mesocosm study: Acartia sp. egg-hatching success (EH) and nauplii development index (DI) of the egg transplant experiment. https://doi.org/10.1594/PANGAEA.867661