Articles | Volume 12, issue 11
https://doi.org/10.5194/bg-12-3489-2015
https://doi.org/10.5194/bg-12-3489-2015
Technical note
 | 
05 Jun 2015
Technical note |  | 05 Jun 2015

Technical Note: Silica stable isotopes and silicification in a carnivorous sponge Asbestopluma sp.

K. R. Hendry, G. E. A. Swann, M. J. Leng, H. J. Sloane, C. Goodwin, J. Berman, and M. Maldonado

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Cited articles

Aguilar, R., Correa, M. L., Calcinai, B., Pastor, X., and De la Torriente, A.: First records of Asbestopluma hypogea Vacelet and Boury-Esnault, 1996 (Porifera, Demospongiae Cladorhizidae) on seamounts and in bathyal settings of the Mediterranean Sea, Zootaxa, 2925, 33–40, 2011.
Bakran-Petricioli, T., Vacelet, J., Zibrowius, H., Petricioli, D., and Chevaldonné, P.: New data on the distribution of the "deep-sea" sponges Asbestopluma hypogea and Oopsacas minuta in the Mediterranean Sea, Mar. Ecol., 28, 10–23, 2007.
Cardinal, D., Alleman, L. Y., de Jong, J., Ziegler, K., and Andre, L.: Isotopic composition of silicon measured by multicollector plasma source mass spectrometry in dry plasma mode, J. Anal. Atom. Spectrom., 18, 213–218, 2003.
Chevaldonné, P., Pérez, T., Crouzet, J. M., Bay-Nouailhat, W., Bay-Nouailhat, A., Fourt, M., Almòn, B., Pérez, J., Aguilar, R., and Vacelet, J.: Unexpected records of "deep-sea" carnivorous sponges Asbestopluma hypogea in the shallow NE Atlantic shed light on new conservation issues, Mar. Ecol., https://doi.org/10.1111/maec.12155, 2014.
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Short summary
The stable isotope composition of benthic sponge silica skeletons (spicules) has been shown to be a source of useful palaeoceanographic information about past deep seawater chemistry. Here, we investigate the biological vital effects on silica stable isotope composition in a Southern Ocean carnivorous sponge, Asbestopluma sp. We find significant variations in isotopic composition within the specimen – in both silicon and oxygen isotopes – that appear to be related to unusual spicule growth.
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