Algae
; Climatology
; Inductively coupled plasma mass spectrometry
; Laser ablation
; Magnesium
; Seawater
; Submarine geophysics
; Ablation
; Algae
; Alizarin
; Atmospheric temperature
; Climatology
; Inductively coupled plasma mass spectrometry
; Laser ablation
; Lithium
; Magnesium
; Mass spectrometers
; Mass spectrometry
; Seawater
; Strontium
; Submarine geophysics
; Surface properties
; Surface reconstruction
; Surface waters
; Trace elements
; Alizarin Red
; CCA
; ENSO
; Rhodoliths
; Sporolithon durum
; Oceanography
; Oceanography
; ablation
; coralline alga
; El Nino-Southern Oscillation
; inductively coupled plasma method
; reconstruction
; red alga
; rhodolith
; sea surface temperature
; spatiotemporal analysis
; trace element
; annual variation
; climate variation
; seasonal variation
; seawater
; New Caledonia [Melanesia]
; New Caledonia [New Caledonia (DPN)]
; Noumea
; algae
; Rhodophyta
; Sporolithon durum
英文摘要:
We used laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) to obtain high-resolution variations of the Mg/Ca, Sr/Ca and Li/Ca composition of free-living forms (i.e. rhodoliths) of the coralline red algal species Sporolithon durum in order to test their potential to archive seawater temperature information. A monitoring experiment was conducted based on alizarin red S (ARS) staining of rhodoliths specimens collected in various locations across a ~1km2 rhodolith bed in the vicinity of Nouméa, New Caledonia, where in situ temperature (IST) variations were recorded for 22 months between November 2009 and August 2011. A >45-year comparison of Mg and trace elements with sea-surface temperature (SST) was established from the analysis of 5 different branches belonging to three of the largest (7.4-8.5cm in diameter) rhodolith specimens observed at the site. Consistent mean Mg/Ca, Sr/Ca and Li/Ca concentrations and seasonal patterns are found for the rhodoliths' last living years (2009-2011) across 43 branches and for the full 1963-2008 period across the 5 branches. Average elemental concentrations (Mg/Ca: 0.31±0.04mol/mol; Sr/Ca: 3.5±0.4mmol/mol and Li/Ca: 0.08±0.02mmol/mol) fall within range of those found in the literature. Individual element variations show good reproducibility between records and Mg/Ca, Sr/Ca and Li/Ca co-vary systematically. Combined records of Mg/Ca, Sr/Ca and Li/Ca are highly correlated with the IST monthly pattern for the 2009-2011 period (0.82
Research School of Earth Sciences, The Australian National University, Canberra 0200, Australia; Institut de Recherche pour le Développement, UR227, Nouméa, New Caledonia
Recommended Citation:
Darrenougue N.,De Deckker P.,Eggins S.,et al. Sea-surface temperature reconstruction from trace elements variations of tropical coralline red algae[J]. Quaternary Science Reviews,2014-01-01,93