scholarly journals Aragonite saturation state dynamics in a coastal upwelling zone

2013 ◽  
Vol 40 (11) ◽  
pp. 2720-2725 ◽  
Author(s):  
Katherine E. Harris ◽  
Michael D. DeGrandpre ◽  
Burke Hales
Keyword(s):  
Coastal Upwelling ◽  
Saturation State ◽  
Aragonite Saturation

Effect of aragonite saturation state on settlement and post-settlement growth of Porites astreoides larvae

Coral Reefs ◽  
2008 ◽  
Vol 27 (3) ◽  
pp. 485-490 ◽  
Author(s):  
R. Albright ◽  
B. Mason ◽  
C. Langdon
Keyword(s):  
Saturation State ◽  
Aragonite Saturation ◽  
Porites Astreoides ◽  
Settlement Growth

scholarly journals Modeled Effect of Coastal Biogeochemical Processes, Climate Variability, and Ocean Acidification on Aragonite Saturation State in the Bering Sea

2019 ◽  
Vol 5 ◽  
Author(s):  
Darren J. Pilcher ◽  
Danielle M. Naiman ◽  
Jessica N. Cross ◽  
Albert J. Hermann ◽  
Samantha A. Siedlecki ◽  
...  
Keyword(s):  
Climate Variability ◽  
Ocean Acidification ◽  
Bering Sea ◽  
Biogeochemical Processes ◽  
Saturation State ◽  
Aragonite Saturation ◽  
The Bering Sea

Short Note: Natural seasonal variability of aragonite saturation state within two Antarctic coastal ocean sites

2011 ◽  
Vol 23 (4) ◽  
pp. 411-412 ◽  
Author(s):  
Ben I. McNeil ◽  
Colm Sweeney ◽  
John A.E. Gibson
Keyword(s):  
Seasonal Variability ◽  
Short Note ◽  
Coastal Ocean ◽  
Saturation State ◽  
Aragonite Saturation

scholarly journals Mineralogy of Deep-Sea Coral Aragonites as a Function of Aragonite Saturation State

2018 ◽  
Vol 5 ◽  
Author(s):  
Gabriela A. Farfan ◽  
Erik E. Cordes ◽  
Rhian G. Waller ◽  
Thomas M. DeCarlo ◽  
Colleen M. Hansel
Keyword(s):  
Deep Sea ◽  
Saturation State ◽  
Aragonite Saturation

scholarly journals Seasonal variability of aragonite saturation state in the Western Pacific

2014 ◽  
Vol 161 ◽  
pp. 1-13 ◽  
Author(s):  
Mareva Kuchinke ◽  
Bronte Tilbrook ◽  
Andrew Lenton
Keyword(s):  
Seasonal Variability ◽  
Western Pacific ◽  
Saturation State ◽  
Aragonite Saturation ◽  
The Western Pacific

scholarly journals Impact of aragonite saturation state changes on migratory pteropods

2011 ◽  
Vol 279 (1729) ◽  
pp. 732-738 ◽  
Author(s):  
Steeve Comeau ◽  
Jean-Pierre Gattuso ◽  
Anne-Marin Nisumaa ◽  
James Orr
Keyword(s):  
Critical Role ◽  
The Arctic ◽  
Depth Range ◽  
High Latitudes ◽  
Empirical Relationships ◽  
Saturation State ◽  
Aragonite Saturation ◽  
Ecological Changes ◽  
State Changes ◽  
Ipcc Sres

Thecosome pteropods play a key role in the food web of various marine ecosystems and they calcify, secreting the unstable CaCO 3 mineral aragonite to form their shell material. Here, we have estimated the effect of ocean acidification on pteropod calcification by exploiting empirical relationships between their gross calcification rates (CaCO 3 precipitation) and aragonite saturation state Ω a , combined with model projections of future Ω a . These were corrected for modern model-data bias and taken over the depth range where pteropods are observed to migrate vertically. Results indicate large reductions in gross calcification at temperate and high latitudes. Over much of the Arctic, the pteropod Limacina helicina will become unable to precipitate CaCO 3 by the end of the century under the IPCC SRES A2 scenario. These results emphasize concerns over the future of shelled pteropods, particularly L. helicina in high latitudes. Shell-less L. helicina are not known to have ever existed nor would we expect them to survive. Declines of pteropod populations could drive dramatic ecological changes in the various pelagic ecosystems in which they play a critical role.

Aragonite saturation state in a monsoonal upwelling system off Java, Indonesia

2016 ◽  
Vol 153 ◽  
pp. 10-17 ◽  
Author(s):  
Liang Xue ◽  
Huiwu Wang ◽  
Li-Qing Jiang ◽  
Wei-Jun Cai ◽  
Qinsheng Wei ◽  
...  
Keyword(s):  
Saturation State ◽  
Aragonite Saturation ◽  
Upwelling System

scholarly journals Effect of CaCO3 (aragonite) saturation state of seawater on calcification of Porites coral

2004 ◽  
Vol 38 (6) ◽  
pp. 613-621 ◽  
Author(s):  
Shigeru Ohde ◽  
Mirza M. Mozaffar Hossain
Keyword(s):  
Saturation State ◽  
Aragonite Saturation ◽  
Porites Coral

scholarly journals A regional hindcast model simulating ecosystem dynamics, inorganic carbon chemistry, and ocean acidification in the Gulf of Alaska

2020 ◽  
Vol 17 (14) ◽  
pp. 3837-3857
Author(s):  
Claudine Hauri ◽  
Cristina Schultz ◽  
Katherine Hedstrom ◽  
Seth Danielson ◽  
Brita Irving ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Seasonal Cycle ◽  
Bottom Water ◽  
Inorganic Carbon ◽  
Dissolved Inorganic Carbon ◽  
Gulf Of Alaska ◽  
Saturation State ◽  
Aragonite Saturation ◽  
Carbon Chemistry ◽  
Seward Line

Abstract. The coastal ecosystem of the Gulf of Alaska (GOA) is especially vulnerable to the effects of ocean acidification and climate change. Detection of these long-term trends requires a good understanding of the system’s natural state. The GOA is a highly dynamic system that exhibits large inorganic carbon variability on subseasonal to interannual timescales. This variability is poorly understood due to the lack of observations in this expansive and remote region. We developed a new model setup for the GOA that couples the three-dimensional Regional Oceanic Model System (ROMS) and the Carbon, Ocean Biogeochemistry and Lower Trophic (COBALT) ecosystem model. To improve our conceptual understanding of the system, we conducted a hindcast simulation from 1980 to 2013. The model was explicitly forced with temporally and spatially varying coastal freshwater discharges from a high-resolution terrestrial hydrological model, thereby affecting salinity, alkalinity, dissolved inorganic carbon, and nutrient concentrations. This represents a substantial improvement over previous GOA modeling attempts. Here, we evaluate the model on seasonal to interannual timescales using the best available inorganic carbon observations. The model was particularly successful in reproducing observed aragonite oversaturation and undersaturation of near-bottom water in May and September, respectively. The largest deficiency in the model is its inability to adequately simulate springtime surface inorganic carbon chemistry, as it overestimates surface dissolved inorganic carbon, which translates into an underestimation of the surface aragonite saturation state at this time. We also use the model to describe the seasonal cycle and drivers of inorganic carbon parameters along the Seward Line transect in under-sampled months. Model output suggests that the majority of the near-bottom water along the Seward Line is seasonally undersaturated with respect to aragonite between June and January, as a result of upwelling and remineralization. Such an extensive period of reoccurring aragonite undersaturation may be harmful to ocean acidification-sensitive organisms. Furthermore, the influence of freshwater not only decreases the aragonite saturation state in coastal surface waters in summer and fall, but it simultaneously decreases the surface partial pressure of carbon dioxide (pCO2), thereby decoupling the aragonite saturation state from pCO2. The full seasonal cycle and geographic extent of the GOA region is under-sampled, and our model results give new and important insights for months of the year and areas that lack in situ inorganic carbon observations.

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