Seawater strontium and Sr/Ca variability in the Atlantic and Pacific oceans

Villiers, Stephanie de

doi:10.1016/s0012-821x(99)00174-0

Cited by 245 publications

(179 citation statements)

References 28 publications

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“…We used Sr, Mg, Ca and Ba to characterize seawater types because the concentrations of these elements are modified by mixing or biological processes that occur in coastal upwelling systems (Lea et al 1989, Coffey et al 1997, de Villiers 1999, Hunter & Boyd 1999. Sr, Mg, and Ca are considered quasiconservative elements with oceanic inventories that are large relative to riverine input; however, involvement in biological and (for Ca and Mg) hydrothermal processes results in slight differences in their vertical and spatial distributions, which may result in chemical signatures of surface and intermediate waters.…”

Section: Introductionmentioning

confidence: 99%

Evaluating chemical signatures in a coastal upwelling region to reconstruct water mass associations of settlement-stage rockfishes

Wheeler¹,

Russell²,

Fehrenbacher³

et al. 2016

Mar. Ecol. Prog. Ser.

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Characterizing the behavior of larvae prior to settlement is integral to understanding population dynamics because coastal oceanography may facilitate or limit settlement. Otolith microchemistry can be used to determine patterns of fish movement, although there is a limited understanding of how this tool can be applied in coastal marine systems. Our goal in this study was to evaluate the application of otolith microchemistry to characterize water mass associations of settlement-stage marine fish in a coastal upwelling region using a 3-step approach. First, we characterized seawater chemistry of coastal water mass types across multiple years, finding differences in the chemical signatures of strong upwelling, weak upwelling, and relaxation events. Second, we experimentally determined the effect of temperature on the partitioning of trace elements in otoliths for 2 rockfishes (Sebastes spp.) to find that the effect of temperature on otolith partition coefficients was element-and species-specific. Finally, we compared coeval changes in seawater and otolith chemistry of settlement-stage rockfishes that were exposed to naturally variable conditions over an upwelling-relaxation cycle. We subsequently evaluate whether laser ablation inductively coupled plasma mass spectrometry effectively measures otolith chemistry over ecologically relevant time scales. We discovered that elemental concentrations in otoliths respond rapidly to changes in seawater chemistry and reflect equivalent proportional changes. This study provides evidence that elemental signatures are valuable tools for reconstructing larval histories of marine fish in coastal upwelling regions.

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Section: Introductionmentioning

confidence: 99%

Evaluating chemical signatures in a coastal upwelling region to reconstruct water mass associations of settlement-stage rockfishes

Wheeler¹,

Russell²,

Fehrenbacher³

et al. 2016

Mar. Ecol. Prog. Ser.

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“…In general, co-precipitation of Sr to Ca in aragonite decreases with temperature increases due to a declining distribution coefficient, which has been both measured and derived theoretically (Dietzel et al, 2004). The negative correlation between skeletal Sr/Ca ratios observed in some massive corals with ambient seawater temperature has been widely established and applied to reconstruct paleo-seawater temperature (Beck et al, 1992;Corrège, 2006;de Villiers, 1999;McCulloch et al, 1994McCulloch et al, , 1996Shen et al, 1996;Weber, 1973;Yan et al, 2013;Yu et al, 2005). However, these relationships may be biased by the influence from symbionts causing an apparent vital effect Cohen et al, 2002Cohen et al, , 2006Stevenson et al, 2014) or by ontogenetic age, grow rates, metabolic activity related to temperature and/or salinity (Purton et al, 1999).…”

Section: Stable Sr Isotope Incorporation Into a Islandica And Sr Comentioning

confidence: 99%

“…It has been argued that bivalves have the ability to regulate their inner shell fluid chemistry, more specifically the extrapallial fluid (EPF), to achieve a carbonate saturation state in order to facilitate biomineralization (Crenshaw, 1980). Stemmer (2013) observed pH gradients between the inner shell surface and the outer mantle epithelium (OME) of A. islandica via an in situ pH microscopy method.…”

Section: Controls On δ 11 B In a Islandica And An Evaluation Of Thementioning

confidence: 99%

Environmental controls on the boron and strontium isotopic composition of aragonite shell material of cultured <i>Arctica islandica</i>

2015

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Abstract. Ocean acidification, the decrease in ocean pH associated with increasing atmospheric CO 2 , is likely to impact marine organisms, particularly those that produce carbonate skeletons or shells. Therefore, it is important to investigate how environmental factors (seawater pH, temperature and salinity) influence the chemical compositions in biogenic carbonates. In this study we report the first highresolution strontium ( 87 Sr / 86 Sr and δ 88 / 86 Sr) and boron (δ 11 B) isotopic values in the aragonite shell of cultured Arctica islandica (A. islandica). The 87 Sr / 86 Sr ratios from both tank water and shell samples show ratios nearly identical to the open ocean, which suggests that the shell material reflects ambient ocean chemistry without terrestrial influence. The 84 Sr-87 Sr double-spike-resolved shell δ 88 / 86 Sr and Sr concentration data show no resolvable change throughout the culture period and reflect no theoretical kinetic mass fractionation throughout the experiment despite a temperature change of more than 15 • C. The δ 11 B records from the experiment show at least a 5 ‰ increase through the 29-week culture season (January 2010-August 2010), with low values from the beginning to week 19 and higher values thereafter. The larger range in δ 11 B in this experiment compared to predictions based on other carbonate organisms (2-3 ‰) suggests that a species-specific fractionation factor may be required. A significant correlation between the pH (pH shell − pH sw ) and seawater pH (pH sw ) was observed (R 2 = 0.35), where the pH shell is the calcification pH of the shell calculated from boron isotopic composition. This negative correlation suggests that A. islandica partly regulates the pH of the extrapallial fluid. However, this proposed mechanism only explains approximately 35 % of the variance in the δ 11 B data. Instead, a rapid rise in δ 11 B of the shell material after week 19, during the summer, suggests that the boron uptake changes when a thermal threshold of > 13 • C is reached.

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“…Recent studies of water chemistry in coral reefs reveal more complex and unexpected changes at local sites of coral growth (SST, Winter et al, 1991;d 18 O in seawater, JuilletLeclerc and Schmidt, 2001; Sr/Ca ratio in seawater, de Villiers, 1999;Stoll and Schrag, 1998).…”

Section: Coral Culture Experimentsmentioning

confidence: 99%

Variation of geochemical signals in coral skeletons: Environmental changes or biological processes?

Watanabe

Reynaud

Cuif

et al. 2006

Paleontological Research

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Abstract. Corals are widely distributed throughout a long stretch of geological time and can provide highresolution histories of climatic variabilities in the tropics, which play a key role in understanding the Earth's climate system. Geochemical approaches to corals have been widely used for reconstructing palaeoclimates because the geochemistry of the skeleton is believed to vary as a function of several environmental conditions. However, large variations that cannot be ascribed to a single environmental factor have been observed among and/or within calibrations of coral-based proxies. Two main unsolved factors could lead to these large discrepancies: unexpected environmental changes in reefs and unknown biological processes occurring at coral biomineralization sites. In this review, we show the recent progress in dealing with this question by application of coral culture technique and micro analytical methods to skeletal geochemistry in corals and discuss on how the degree of geochemical variation could be affected by environmental changes and how by biological processes during the skeleton's calcification. The next challenge will be to perform high-resolution analysis on cultured corals growing under controlled and/or constant environmental conditions. Such efforts hold the promise of yielding important new insights into the various biomineralization processes that may affect the chemical and isotopic composition of the skeletons, with the goal of understanding how environmental changes express themselves in geochemical variability.

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Seawater strontium and Sr/Ca variability in the Atlantic and Pacific oceans

Cited by 245 publications

References 28 publications

Evaluating chemical signatures in a coastal upwelling region to reconstruct water mass associations of settlement-stage rockfishes

Evaluating chemical signatures in a coastal upwelling region to reconstruct water mass associations of settlement-stage rockfishes

Environmental controls on the boron and strontium isotopic composition of aragonite shell material of cultured <i>Arctica islandica</i>

Variation of geochemical signals in coral skeletons: Environmental changes or biological processes?

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Seawater strontium and Sr/Ca variability in the Atlantic and Pacific oceans

Cited by 245 publications

References 28 publications

Evaluating chemical signatures in a coastal upwelling region to reconstruct water mass associations of settlement-stage rockfishes

Evaluating chemical signatures in a coastal upwelling region to reconstruct water mass associations of settlement-stage rockfishes

Environmental controls on the boron and strontium isotopic composition of aragonite shell material of cultured &lt;i&gt;Arctica islandica&lt;/i&gt;

Variation of geochemical signals in coral skeletons: Environmental changes or biological processes?

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Environmental controls on the boron and strontium isotopic composition of aragonite shell material of cultured <i>Arctica islandica</i>