The -temperature relationship in coralline aragonite: Influence of variability in and skeletal growth parameters

Villiers, Stephanie de; Shen, Guanjun; Nelson, Bruce K.

doi:10.1016/0016-7037(94)90457-x

Cited by 312 publications

(265 citation statements)

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“…3), their absolute values, and the amplitude of their variability, show differences that may be controlled by physiological factors such as growth rate. Many high-resolution studies have demonstrated that growth rate has a significant effect on elemental and isotopic ratios in the same colony, and even in the same corallite, for almost all kinds of scleractinian corals (e.g., Weber 1973;McConnaughey 1989;de Villiers et al 1994de Villiers et al , 1995Watanabe et al 2002;Mitsuguchi et al 2003;Goodkin et al 2005). Furthermore, the growth rate of Porites sp.…”

Section: Possible Impacts On the Offset Of Intercoral Geochemical Recmentioning

confidence: 99%

Evaluation of annual resolution coral geochemical records as climate proxies in the Great Barrier Reef of Australia

et al. 2014

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Sampling of annually banded massive coral skeletons at annual (or higher) resolutions is increasingly being used to obtain replicate long-term time series of changing seawater conditions. However, few of these studies have compared and calibrated the lower annual resolution records based on coral geochemical tracers with the corresponding instrumental climate records, although some studies have inferred the climatic significance of annual coral series derived from averages of monthly or sub-annual records. Here, we present annual resolution analysis of coral records of elemental and stable isotopic composition that are approximately 70 years long. These records were preserved in two coexisting colonies of Porites sp. from Arlington Reef, on the Great Barrier Reef in Australia, and are used to evaluate the climatic significance of annually resolved coral geochemical proxies. The geochemical records of coral sample ''10AR2,'' with its faster and relatively constant annual growth rate, appear to have been independent of skeletal growth rate and other vital effects. The annual resolution of Sr/Ca and Dd 18 O time series was shown to be a good proxy for annual sea surface temperature (SST; r = -0.67, n = 73, p \ 0.0000001) and rainfall records (r = -0.34, n = 67, p \ 0.01). However, a slower growing coral sample, ''10AR1'' showed significantly lower correlations (r = -0.20, n = 71, p = 0.05 for Sr/Ca and SST; r = -0.19, n = 67, p = 0.06 for Dd 18 O and rainfall), indicating its greater susceptibility to biological/metabolic effects. Our results suggest that while annually resolved coral records are potentially a valuable tool for determining, in particular, long timescale climate variability such as Pacific Decadal Oscillation, Interdecadal Pacific Oscillation, and other climatic factors, the selection of the coral sample is important, and replication is essential.

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Section: Possible Impacts On the Offset Of Intercoral Geochemical Recmentioning

confidence: 99%

Evaluation of annual resolution coral geochemical records as climate proxies in the Great Barrier Reef of Australia

et al. 2014

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“…However, this distribution coefficient has uncertainties as discussed in section 3.2., and using lower (higher) distribution coefficient would increase (decrease) the Pb concentrations. In surface growing corals, it was found that Dp of trace elements can be variable in a single coral due to kinetic artifacts (Cohen et al, 2001;Devilliers et al, 1994;1995). Moreover, fine-scale fluctuations have been found within a skeletal structure both in surface and deep sea corals (Cohen and McConnaughey, 2003;Gagnon et al, 2007;Robinson et al, 2006;Sinclair, 2005).…”

Section: Discrepancies Between Model Estimate and Observationmentioning

confidence: 99%

Evolution of anthropogenic Pb and Pb isotopes in the deep North Atlantic Ocean and the Indian Ocean

Lee¹

2013

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, in partial fulfillment of the Requirement for the degree of Doctor of PhilosophyPb and Pb isotopes in the ocean have varied on decadal to centennial time scales due to anthropogenic Pb inputs. Thus, tracing the temporal variation of Pb and Pb isotopes in the ocean provides information on the major sources of Pb and the transport of Pb from sources to the ocean surface and into the ocean interior. In this thesis study, first, a method was developed for the analysis of dissolved Pb and other trace elements in seawater using single batch nitrilotriacetate resin extraction and isotope dilution ICP-MS, which was applied in analyzing seawater Pb concentrations in the rest of the study. A -550 year history of the Pb and Pb isotopes in the deep North Atlantic Ocean is reconstructed using a deep-sea coral, showing the infiltration of anthropogenic Pb to deep sea. Comparing the results to the surface North Atlantic Ocean Pb record using a Transit Time Distribution model, the mean transit time of Pb is estimated to be -64 years. This is longer than the transit time estimate assuming simple advection from a source, showing the importance of advective-diffusive mixing in the transport of Pb to the ocean interior. The later part of the thesis investigates Pb in the Indian Ocean, where no useful Pb data have been previously reported. First, using annually-banded surface growing corals, I reconstruct variations of Pb and isotopes in the surface waters of the central and eastern Indian Oceans during the past half-century. Results of the study show the increase of Pb concentrations from the mid-1970s, and major sources of the Pb are discussed, including leaded gasoline and coal burning, based on their emission histories and Pb isotope signatures. Second, Pb concentration and isotope profiles are presented from the northern and western Indian Oceans. AcknowledgementI would like to thank all the people who made this work possible. First, I owe a big thank to my advisor Ed Boyle. He taught me a lot about trace metal techniques, guided me to find right and important scientific questions whenever I was lost, and supported all my work. Not only that, he was also supportive of me having a family, very understanding and patient, which I cannot be grateful enough.I'd like to thank my committee: Bill Jenkins, Carl Lamborg, Phoebe Lam, and Konrad Hughen. Interests they showed during committee meetings were so inspiring and encouraging. I usually had this magical experience that my work, which looked so boring beforehand, turns into the most interesting one in the world after the committee meeting.I also would like to thank Jess Adkins and Selene Eltgroth, who provided the deep-sea coral and the radiocarbon data used in Chapter 3, and shared their expertise in deep-sea coral analysis with me. My work in Chapter 4 and 5 could not be completed without these people who helped me to collect corals and seawater samples from the Indian Ocean: Miriam Pfeiffer, Aron Meltzner, Kerry Sieh, Bambang Suwargadi, Danny Natawidjaja, Toshitaka Gamo, Hajim...

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“…This means that with a 1-meter coral sample we can reconstruct environmental data until a hundred years ago [11]. One well-known geochemical proxy that records SST is the ratio of strontium to calcium (Sr/Ca) [7,14]. Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Reconstruction of Sea Surface Temperature Data based on the Sr/Ca of Porites Coral in Ambon Bay

2016

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Abstract. Sea Surface Temperature (SST) data can be used to understand oceanography dynamics in Ambon Bay. However, a lack of continual and long time series in-situ SST data limited this study. To overcome this problem, the Sr/Ca composition in Porites coral taken from Outer Ambon Bay was used to reconstruct SST. The coral sample was sub-sampled monthly and analyzed using ICP-OES. Subsequently, the anchor point method was used to develop the chronology of the coral Sr/Ca based on ERSST v3b data. The regression equation results were Sr/Ca = -0.059 x SST + 10.32 (r = -0.699, n = 95, p < 0.05). The reconstructed SST based on these results was verified by in-situ data from May to November 2008. The difference was found to be 1.2-2.5 °C (σ = 0.05%). This results lead us to conclude that coral Sr/Ca reflects SST variation in Ambon Bay well. Based on the reconstructed SST, we found that the SST in Ambon Bay experiences an extreme seasonal variation, which is highly correlated to air temperature, wind speed, and length of sun radiation. Ambon Bay also experiences SST anomalies in some periods, which are dominantly affected by local atmospheric conditions rather than ENSO phenomena.

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The -temperature relationship in coralline aragonite: Influence of variability in and skeletal growth parameters

Cited by 312 publications

References 33 publications

Evaluation of annual resolution coral geochemical records as climate proxies in the Great Barrier Reef of Australia

Evaluation of annual resolution coral geochemical records as climate proxies in the Great Barrier Reef of Australia

Evolution of anthropogenic Pb and Pb isotopes in the deep North Atlantic Ocean and the Indian Ocean

Reconstruction of Sea Surface Temperature Data based on the Sr/Ca of Porites Coral in Ambon Bay

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