Size-dependent response of foraminiferal calcification to seawater carbonate chemistry
| Autor: | Madison Shankle, Thomas B Chalk, Janet E. Burke, Pincelli M. Hull, Gavin L. Foster, David Evans, Joseph A. Stewart, Claudia H. S. Alt, Michael J. Henehan, Eleni Anagnostou, Joseph Durrant |
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| Přispěvatelé: | University of St Andrews. Earth and Environmental Sciences |
| Rok vydání: | 2016 |
| Předmět: |
010504 meteorology & atmospheric sciences
Environmental change QH301 Biology lcsh:Life 010502 geochemistry & geophysics 01 natural sciences Carbon cycle Foraminifera QH301 chemistry.chemical_compound lcsh:QH540-549.5 medicine QD SDG 14 - Life Below Water 14. Life underwater Ecology Evolution Behavior and Systematics Globigerinoides 0105 earth and related environmental sciences Earth-Surface Processes GC Calcite GE biology Ecology lcsh:QE1-996.5 DAS Plankton QD Chemistry biology.organism_classification medicine.disease lcsh:Geology lcsh:QH501-531 Oceanography chemistry 13. Climate action Carbonate GC Oceanography lcsh:Ecology GE Environmental Sciences Calcification |
| Zdroj: | Biogeosciences Biogeosciences, Vol 14, Pp 3287-3308 (2017) Biogeosciences (BG), 14 (13). pp. 3287-3308. Henehan, M J, Evans, D, Shankle, M, Burke, J E, Foster, G L, Anagnostou, E, Chalk, T B, Stewart, J A, Alt, C H S, Durrant, J & Hull, P M 2017, ' Size-dependent response of foraminiferal calcification to seawater carbonate chemistry ', Biogeosciences, vol. 14, no. 13, pp. 3287-3308 . https://doi.org/10.5194/bg-14-3287-2017 |
| ISSN: | 1726-4189 |
| DOI: | 10.5194/bg-2016-459 |
| Popis: | Michael J. Henehan acknowledges financial support from the Yale Peabody Museum. The response of the marine carbon cycle to changes in atmospheric CO2 concentrations will be determined, in part, by the relative response of calcifying and non-calcifying organisms to global change. Planktonic foraminifera are responsible for a quarter or more of global carbonate production, therefore understanding the sensitivity of calcification in these organisms to environmental change is critical. Despite this, there remains little consensus as to whether, or to what extent, chemical and physical factors affect foraminiferal calcification. To address this, we directly test the effect of multiple controls on calcification in culture experiments and core-top measurements of Globigerinoides ruber. We find that two factors, body size and the carbonate system, strongly influence calcification intensity in life, but that exposure to corrosive bottom waters can overprint this signal post mortem. Using a simple model for the addition of calcite through ontogeny, we show that variable body size between and within datasets could complicate studies that examine environmental controls on foraminiferal shell weight. In addition, we suggest that size could ultimately play a role in determining whether calcification will increase or decrease with acidification. Our models highlight that knowledge of the specific morphological and physiological mechanisms driving ontogenetic change in calcification in different species will be critical in predicting the of foraminiferal calcification to future change in atmospheric pCO2. Publisher PDF |
| Databáze: | OpenAIRE |
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