caa a22 4500 44581943X CHVBK 20180317145239.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s00338-011-0757-z doi (NATIONALLICENCE)springer-10.1007/s00338-011-0757-z Fine-scale phosphorus distribution in coral skeletons: combining X-ray mapping by electronprobe microanalysis and LA-ICP-MS [Elektronische Daten] [J. Mallela, J. Hermann, R. Rapp, S. Eggins] Increased terrestrial phosphorus runoff is a major environmental problem that has been linked to deteriorating reef health. Unfortunately, long-term records of phosphorus are limited. Whilst phosphorus captured in coral skeletons could provide us with an archive of phosphorus variability, the mode of incorporation is poorly understood. In order to document phosphorus levels, we used laser ablation inductively coupled plasma mass spectrometry, followed by X-ray mapping of phosphorus in the skeleton at micron scale (~3-5 microns) using Electronprobe microanalysis. We recorded high phosphorus (≤8,700ppm) in the living tissue zone associated with phosphorus-rich residues lining the internal pore network surfaces. The skeleton in the tissue zone had low, uniform levels of phosphorus, similar to older sections of the core (<50ppm). Below the organic tissue layer, P was incorporated homogenously in the skeleton for extended periods (e.g., 5mm growth bands). However, sections of the core (~1cm down-core) displayed fine-scale elevated phosphorus concentrations associated with the presence of phosphorus-rich, often elongate (10-100μm long), heterogeneities within the skeleton, the origin of these phosphorus-rich heterogeneities and their mode of incorporation requires further attention. In conclusion, these results support the continued development of this promising potential nutrient proxy. Springer-Verlag, 2011 Coral archive nationallicence Electronprobe microanalysis (EMPA) nationallicence Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) nationallicence Coral nationallicence Nutrients nationallicence Phosphate nationallicence Mallela J. Research School of Earth Sciences, Australian National University, Mills Road, 0200, Canberra, ACT, Australia aut Hermann J. Research School of Earth Sciences, Australian National University, Mills Road, 0200, Canberra, ACT, Australia aut Rapp R. Research School of Earth Sciences, Australian National University, Mills Road, 0200, Canberra, ACT, Australia aut Eggins S. Research School of Earth Sciences, Australian National University, Mills Road, 0200, Canberra, ACT, Australia aut Coral Reefs Springer-Verlag 30/3(2011-09-01), 813-818 0722-4028 30:3<813 2011 30 338 https://doi.org/10.1007/s00338-011-0757-z text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00338-011-0757-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mallela J. Research School of Earth Sciences, Australian National University, Mills Road, 0200, Canberra, ACT, Australia aut NATIONALLICENCE 700 1- Hermann J. Research School of Earth Sciences, Australian National University, Mills Road, 0200, Canberra, ACT, Australia aut NATIONALLICENCE 700 1- Rapp R. Research School of Earth Sciences, Australian National University, Mills Road, 0200, Canberra, ACT, Australia aut NATIONALLICENCE 700 1- Eggins S. Research School of Earth Sciences, Australian National University, Mills Road, 0200, Canberra, ACT, Australia aut NATIONALLICENCE 773 0- Coral Reefs Springer-Verlag 30/3(2011-09-01), 813-818 0722-4028 30:3<813 2011 30 338 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer