Growth-rate influences on coral climate proxies tested by a multiple colony culture experiment

Precise determination of Sr/Ca by laser ablation ICP-MS compared to ICP-AES and application to multi-century temperate corals

“…However, although δ 18 O in coral skeleton depends on both SST and seawater δ 18 O composition, Sr/Ca is a proxy for SST alone (Beck et al, 1992). Recent culturing study has confirmed that coral Sr/Ca is a reliable SST proxy due to its insensitivity to variations in skeletal growth rate (Hayashi et al, 2013). Inductively-coupled plasma atomic emission spectrometry (ICP-AES) has become the most common method for Sr/Ca analysis (Schrag, 1999), partly because measurements can be done on splits of milled coral pow-term accuracy of Sr/Ca ratios for multi-century records.…”

Skeletal isotopic responses of the Scleractinian coral Isopora palifera to experimentally controlled water temperatures

“…The kinetic isotope effect has been reported previously in slowgrowing coral colonies (linear extension rate < 5 mm y -1 ) (McConnaughey, 1989;Gagan et al, 2012). In contrast, Hayashi et al (2013) reported that in a out-door tank experiment with Porites, linear extension rate (2-15 mm yr -1 ) had little influence on δ 18 O variation, and suggested that light conditions have been proposed to suppress the kinetic isotope effect in coral skeletons. We found that the growth rate of each nubbin grown at 21.1-29.5°C showed poor correlation with δ 13 C c and δ 18 O c (Figs.…”

“…3A). We used our temperature data and the yearly average value of δ 13 C of dissolved inorganic carbon (DIC) in seawater (δ 13 C DIC ) reported by Hayashi et al (2013) (+1.0‰ ± 0.2‰ V-PDB, mean ± SD, n = 30) to calculated δ 13 C eq . Then, we subtracted the δ 18 O eq and δ 13 C eq values of inorganic aragonite from the δ 18 O c and δ 13 C c values of I. palifera to remove the thermal factor from the coral carbonate δ 18 O c and δ 13 C c results (Figs.…”

“…The precision of δ 18 O c and δ 13 C c was better than 0.1‰ (1 SD). We calculated δ 18 O of the seawater (δ 18 O w ) from the measured salinity data by using the equation of Hayashi et al (2013):…”

Local origins of interdecadal Pacific variability in the tropical and North Pacific Ocean: evidence from a comparative study of coral oxygen isotope records

“…O and Sr/Ca ratios-can be used as paleoclimate archives (Hayashi et al 2013). Such climate proxies can then serve to reconstruct the activity of IPV over several centuries (e.g., Linsley et al 2000;Evans et al 2001;Sun et al 2004;Asami et al 2005;Holland et al 2007;Felis et al 2010;Deng et al 2013), and thereby offer an alternative data source from which the instrumental record can be extended to facilitate investigations of past IPV activity.…”