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New peer-reviewed papers

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Aug 27, 2014 8:41 AM
Limpets counteract ocean acidification induced shell corrosion by thickening of aragonitic shell layers
Specimens of the patellogastropod limpet Patella caerulea were collected within (pHlow-shells) and outside (pHn-shells) a CO2 vent site at Ischia, Italy. Four pHlow-shells and four pHn-shells were sectioned transversally and scanned for polymorph distribution by means of confocal Raman microscopy. The pHlow-shells displayed a twofold increase in aragonite area fraction and size normalised aragonite area. […]

Aug 27, 2014 5:48 AM
Interactive effects of ocean acidification and warming on subtidal mussels and sea stars from Atlantic Canada
Anthropogenic CO2 is decreasing oceanic pH and contributing to seawater warming. We tested the effects of low pH and high temperature at levels predicted for 2100 on an ecologically important predator–prey system (sea stars, Asterias rubens, and mussels, Mytilus edulis) from the NW Atlantic coast. Mussels are dominant competitors for space and important ecosystem engineers, […]

Aug 27, 2014 4:12 AM
Metabolic suppression during protracted exposure to hypoxia in the jumbo squid, Dosidicus gigas, living in an oxygen minimum zone
The jumbo squid, Dosidicus gigas, can survive extended forays into the oxygen minimum zone (OMZ) of the Eastern Pacific Ocean. Previous studies have demonstrated reduced oxygen consumption and a limited anaerobic contribution to ATP production, suggesting the capacity for substantial metabolic suppression during hypoxic exposure. Here, we provide a more complete description of energy metabolism […]

Aug 26, 2014 8:43 AM
Living in warmer more acidic oceans retards physiological recovery from tidal emersion in the velvet swimming crab Necora puber (L.)
The distribution patterns of many species in the intertidal zone are partly determined by their ability to survive and recover from tidal emersion. During emersion most crustaceans experience gill-collapse impairing gas-exchange. Such collapse generates a state of hypoxemia and a hypercapnia-induced respiratory acidosis, leading to hyperlactaemia and metabolic acidosis. However, how such physiological responses to […]

Aug 26, 2014 8:36 AM
Characterization of the Antarctic sea urchin (Sterechinus neumayeri) transcriptome and mitogenome: a molecular resource for phylogenetics, ecophysiology and global change biology
This is the first de novo transcriptome and complete mitochondrial genome of an Antarctic sea urchin species sequenced to date. Sterechinus neumayeri is an Antarctic sea urchin and a model species for ecology, development, physiology, and global change biology. To identify transcripts important to ocean acidification and thermal stress, this transcriptome was created pooling thirteen […]

Aug 26, 2014 8:27 AM
Health and population-dependent effects of ocean acidification on the marine isopod Idotea balthica
Three populations of the grazing isopod Idotea balthica were exposed to high CO2 treatment for a period of 20 days to investigate the effect of ocean acidification (OA) on animal health and immunocompetence. The results of the populations from more saline habitats were comparable and showed a 60–80 % decrease in immune response as a […]

Aug 25, 2014 5:45 AM
Diverse coral communities in mangrove habitats suggest a novel refuge from climate change
Risk analyses indicate that more than 90% of the world’s reefs will be threatened by climate change and local anthropogenic impacts by the year 2030 under “business-as-usual” climate scenarios. Increasing temperatures and solar radiation cause coral bleaching that has resulted in extensive coral mortality. Increasing carbon dioxide reduces seawater pH, slows coral growth, and may […]

Aug 25, 2014 5:37 AM
Interactive comment on “Comparison of seven packages that compute ocean carbonate chemistry” by J. C. Orr et al.
Response to Referee, Richard Zeebe The comments from Drs. Zeebe and Wolf-Gladrow are repeated below in gray (here marked with “…”); our response follows in black. We thank them for the effort that they put into providing this comment. “Errors and typos in numerical routines that lead to differences in CO2 system calculations should of […]

Aug 25, 2014 5:05 AM
Organic matter production response to CO2 increase in open subarctic plankton communities: Comparison of six microcosm experiments under iron-limited and -enriched bloom conditions
Increase in seawater pCO2 and the corresponding decrease in pH caused by the increasing atmospheric CO2 concentration (i.e., ocean acidification) may affect organic matter production by phytoplankton communities. Organic matter production forms the basis of marine food webs and plays a crucial role in oceanic CO2 uptake through the biological carbon pump, and hence will […]

Aug 22, 2014 4:30 AM
Autonomous in situ measurements of seawater alkalinity
Total alkalinity (AT) is an important parameter for describing the marine inorganic carbon system and understanding the effects of atmospheric CO2 on the oceans. Measurements of AT are limited, however, because of the laborious process of collecting and analyzing samples. In this work we evaluate the performance of an autonomous instrument for high temporal resolution […]