Coral and mollusc resistance to ocean acidification adversely affected by warming

Rodolfo‐Metalpa, Riccardo; Houlbrèque, Fanny; Tambutté, Éric; Boisson, Florence; Baggini, Cecilia; Patti, Francesco Paolo; Jeffree, Ross A.; Fine, Maoz; Foggo, Andrew; Gattuso, Jean‐Pierre; Hall-Spencer, Jason M.

doi:10.1038/nclimate1200

Cited by 409 publications

(387 citation statements)

References 28 publications

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“…Nevertheless, the lowest weight value, recorded at the highest temperature and pCO 2 , suggests synergetic effects of both parameters as previously demonstrated in corals and molluscs (e.g. Rodolfo-Metalpa et al 2011) and that combined ocean acidification and warming may reduce the efficiency of yolk utilization through an energy budget modulation (Pörtner 2008). Therefore, on one side, under elevated seawater pCO 2 , combined hypoxia and hypercapnia in the PVF would slow down the developmental rate, explaining the delay in hatching time observed by Hu et al (2011a), and on the other side, extreme seawater and PVF pCO 2 would lead to an increased allocation of energy to acid-base and other cellular homeostatic processes (including ion movements associated with ACC formation for example) at the expense of animal growth.…”

Section: Discussionmentioning

confidence: 54%

Ocean acidification and temperature rise: effects on calcification during early development of the cuttlefish Sepia officinalis

et al. 2012

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Abstract:This study investigated the effects of seawater pH (i.e. 8.10, 7.85 and 7.60) and temperature (16 and 19°C) on (i) the abiotic conditions in the fluid surrounding the embryo (viz. the perivitelline fluid),(ii) growth, development and (iii) cuttlebone calcification of embryonic and juvenile stages of the cephalopod Sepia officinalis. Egg swelling increased in response to acidification or warming, leading to an increase in egg surface while the interactive effects suggested a limited plasticity of the swelling modulation. Embryos experienced elevated pCO 2 conditions in the perivitelline fluid (> 3-fold higher pCO 2 than that of ambient seawater), rendering the medium under-saturated even under ambient conditions. The growth of both embryos and juveniles was unaffected by pH, whereas 45 Ca incorporation in cuttlebone increased significantly with decreasing pH at both temperatures. This phenomenon of hypercalcification is limited to only a number of animals but does not guarantee functional performance and calls for better mechanistic understanding of calcification processes.

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Section: Discussionmentioning

confidence: 54%

Ocean acidification and temperature rise: effects on calcification during early development of the cuttlefish Sepia officinalis

et al. 2012

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“…While it was beyond the scope of our study to identify the mechanistic basis of the resistance of these two corals to OA, there are three hypotheses with potential to explain this pattern. First, the tissue of corals could function as a protective barrier isolating the site of calcification from the external seawater [23,43], thereby protecting it from decreasing pH attributed to OA [19,20]. Of the two corals studied, massive Porites is well known for an unusually thick tissue layer that permeates deeply into the skeleton [49].…”

Section: Discussionmentioning

confidence: 99%

Pacific-wide contrast highlights resistance of reef calcifiers to ocean acidification

et al. 2014

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Ocean acidification (OA) and its associated decline in calcium carbonate saturation states is one of the major threats that tropical coral reefs face this century. Previous studies of the effect of OA on coral reef calcifiers have described a wide variety of outcomes for studies using comparable partial pressure of CO 2 (pCO 2 ) ranges, suggesting that key questions remain unresolved. One unresolved hypothesis posits that heterogeneity in the response of reef calcifiers to high pCO 2 is a result of regional-scale variation in the responses to OA. To test this hypothesis, we incubated two coral taxa (Pocillopora damicornis and massive Porites) and two calcified algae (Porolithon onkodes and Halimeda macroloba) under 400, 700 and 1000 matm pCO 2 levels in experiments in Moorea (French Polynesia), Hawaii (USA) and Okinawa (Japan), where environmental conditions differ. Both corals and H. macroloba were insensitive to OA at all three locations, while the effects of OA on P. onkodes were locationspecific. In Moorea and Hawaii, calcification of P. onkodes was depressed by high pCO 2 , but for specimens in Okinawa, there was no effect of OA. Using a study of large geographical scale, we show that resistance to OA of some reef species is a constitutive character expressed across the Pacific.

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“…In the case of shells, calcification is also affected by parameters other than seawater carbonate saturation state-notably temperature [8,9], wave exposure (e.g. [10]), food availability [11] and predation pressure [12,13], some of which can interact, either counteracting the effects of changing seawater saturation state [11] or exacerbating them [3].…”

Section: Introductionmentioning

confidence: 99%

Historical baselines and the future of shell calcification for a foundation species in a changing ocean

et al. 2016

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Seawater pH and the availability of carbonate ions are decreasing due to anthropogenic carbon dioxide emissions, posing challenges for calcifying marine species. Marine mussels are of particular concern given their role as foundation species worldwide. Here, we document shell growth and calcification patterns in Mytilus californianus, the California mussel, over millennial and decadal scales. By comparing shell thickness across the largest modern shells, the largest mussels collected in the 1960s-1970s and shells from two Native American midden sites ( 1000-2420 years BP), we found that modern shells are thinner overall, thinner per age category and thinner per unit length. Thus, the largest individuals of this species are calcifying less now than in the past. Comparisons of shell thickness in smaller individuals over the past 10-40 years, however, do not show significant shell thinning. Given our sampling strategy, these results are unlikely to simply reflect within-site variability or preservation effects. Review of environmental and biotic drivers known to affect shell calcification suggests declining ocean pH as a likely explanation for the observed shell thinning. Further future decreases in shell thickness could have significant negative impacts on M. californianus survival and, in turn, negatively impact the species-rich complex that occupies mussel beds.

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Coral and mollusc resistance to ocean acidification adversely affected by warming

Cited by 409 publications

References 28 publications

Ocean acidification and temperature rise: effects on calcification during early development of the cuttlefish Sepia officinalis

Ocean acidification and temperature rise: effects on calcification during early development of the cuttlefish Sepia officinalis

Pacific-wide contrast highlights resistance of reef calcifiers to ocean acidification

Historical baselines and the future of shell calcification for a foundation species in a changing ocean

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