Impact of aragonite saturation state changes on migratory pteropods

Comeau, Steeve; Gattuso, Jean‐Pierre; Nisumaa, Anne-Marin; Orr, James C.

doi:10.1098/rspb.2011.0910

Cited by 61 publications

(50 citation statements)

References 47 publications

(64 reference statements)

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“…In order to simulate the future of pteropod populations, Comeau et al (2011) used models that combine empirical data on the relationship between gross calcification and aragonite saturation state, projections of aragonite saturation state and data on pteropods' diurnal migrations. Calcification of both temperate and polar pteropods is expected to significantly decline in the future.…”

Section: Pteropodsmentioning

confidence: 99%

Impacts of ocean acidification on marine shelled molluscs

et al. 2013

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Over the next century, elevated quantities of atmospheric CO 2 are expected to penetrate into the oceans, causing a reduction in pH (-0.3/-0.4 pH unit in the surface ocean) and in the concentration of carbonate ions (so-called ocean acidification). Of growing concern are the impacts that this will have on marine and estuarine organisms and ecosystems. Marine shelled molluscs, which colonized a large latitudinal gradient and can be found from intertidal to deep-sea habitats, are economically and ecologically important species providing essential ecosystem services including habitat structure for benthic organisms, water purification and a food source for other organisms. The effects of ocean acidification on the growth and shell production by juvenile and adult shelled molluscs are variable among species and even within the same species, precluding the drawing of a general picture. This is, however, not the case for pteropods, with all species tested so far, being negatively impacted by ocean acidification. The blood of shelled molluscs may exhibit lower pH with consequences for several physiological processes (e.g. respiration, excretion, etc.) and, in some cases, increased mortality in the long term. While fertilization may remain unaffected by elevated pCO 2 , embryonic and larval development will be highly sensitive with important reductions in size and decreased survival of larvae, increases in the number of abnormal larvae and an increase in the developmental time. There are big gaps in the current understanding of the biological consequences of an Communicated by S. Dupont.Frédéric Gazeau and Laura M. Parker have contributed equally to this work.Electronic supplementary material The online version of this article

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Section: Pteropodsmentioning

confidence: 99%

Impacts of ocean acidification on marine shelled molluscs

et al. 2013

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“…Gazeau et al 2010Gazeau et al , 2011Waldbusser et al 2010;, pteropods (e.g. Comeau et al 2011) or echinoderms (reviewed by Dupont et al 2010). Some studies however reported unchanged or increased calcification rates under high seawater pCO 2 in echinoderms (Wood et al 2008;Gooding et al 2009;Ries et al 2009), decapod crustaceans (Ries et al 2009), juvenile cephalopods (Gutowska et al 2010a,b), and teleost fish (otholiths: Checkley et al 2009;Munday et al 2011).…”

Section: Introductionmentioning

confidence: 99%

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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“…Limacina taxa in particular exhibit the escape behaviour of downward swimming that makes them more susceptible than other pelagic zooplankton to being caught by sediment traps . Typical distances travelled are taxon-specific, but for Southern Ocean pteropods are of the order of 50-200 m (Hunt et al 2008;Comeau et al 2012), and Hunt et al (2008) report L. helicina antarctica caught by nets as deep as 500 m. We acknowledge that our sediment traps may contain occasional 'super-swimmers', but we also acknowledge that some individuals may be digested or dissolved before they reach the sediment traps. Accordingly, our reported fluxes may represent an overestimate or underestimate of aragonite flux in the PFZ of the Southern Ocean.…”

Section: Trap Deployments and Sample Retrievalmentioning

confidence: 99%

Diverse trends in shell weight of three Southern Ocean pteropod taxa collected with Polar Frontal Zone sediment traps from 1997 to 2007

et al. 2014

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The impact of ocean acidification on key ocean calcifiers is predicted to be imminent, particularly in highlatitude ecosystems. Long-term field observations are essential to ground truth predictions of change in regional ecosystems. Here, we report on aragonitic pteropods collected to sediment traps at 800 m depth at 54°S, 140°E in the Polar Frontal Zone (PFZ) of the Southern Ocean from 1997 to 2007. Statistically significant trends were not identified in either mass or number flux from 1997 to 2007; however, differences emerged in decadal trends seen in shell weight for each of the three common taxa collected: Limacina helicina antarctica forma antarctica shells became significantly lighter (P \ 0.05), L. retroversa australis shells became significantly heavier (P \ 0.05) and L. helicina antarctica forma rangi shells did not change significantly. These results suggest that factors other than ocean acidification affect pteropod population variations on decadal timescales, with the potential to either amplify or counter the impact of decreasing aragonite saturation state, at least in the short term. Comparison to sea surface temperature and chlorophyll biomass did not identify these as significant drivers of the observed changes, and attribution across these multiple variables requires better understanding of pteropod physiology and ecology. Our PFZ pelagic pteropod observations provide a reference for evaluation of southern polar pteropod responses to changing ocean conditions in coming decades. Importantly, these data also raise the issue of taxonomic care when monitoring the region for impacts of ocean acidification on calcifiers.

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Impact of aragonite saturation state changes on migratory pteropods

Cited by 61 publications

References 47 publications

Impacts of ocean acidification on marine shelled molluscs

Impacts of ocean acidification on marine shelled molluscs

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

Diverse trends in shell weight of three Southern Ocean pteropod taxa collected with Polar Frontal Zone sediment traps from 1997 to 2007

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