Sea urchin response to rising pCO2 shows ocean acidification may fundamentally alter the chemistry of marine skeletons

 
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2014 (EN)
Sea urchin response to rising pCO2 shows ocean acidification may fundamentally alter the chemistry of marine skeletons (EN)

PANCUCCI-PAPADOPOULOU, M.A.
BRAY, L.
HALL-SPENCER, J. M.

Hellenic Centre for Marine Research, Institute of Oceanography (EN)
Plymouth University, Electron Microscopy Centre (EN)
Cecilia Baggini, Plymouth University (EN)

Ocean acidification caused by an increase in pCO2 is expected to drastically affect marine ecosystem composition, yet there is much uncertainty about the mechanisms through which ecosystems may be affected. Here we studied sea urchins that are common and important grazers in the Mediterranean (Paracentrotus lividus and Arbacia lixula). Our study included a natural CO2 seep plus reference sites in the Aegean Sea off Greece. The distribution of A. lixula was unaffected by the low pH environment, whereas densities of P. lividus were much reduced. There was skeletal degradation in both species living in acidified waters compared to reference sites and remarkable increases in skeletal manganese levels (P. lividus had a 541% increase, A. lixula a 243% increase), presumably due to changes in mineral crystalline structure. Levels of strontium and zinc were also altered. It is not yet known whether such dramatic changes in skeletal chemistry will affect coastal systems but our study reveals a mechanism that may alter inter-species interactions. (EN)

info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion

Skeletal element composition (EN)
Paracentrotus lividus (EN)
Arbacia lixula (EN)
Ocean acidification (EN)
Crystalline structure (EN)

Ελληνικό Κέντρο Θαλασσίων Ερευνών (ΕΛΚΕΘΕ) (EL)
Hellenic Centre for Marine Research (HCMR) (EN)

Mediterranean Marine Science

2014-04-25


Hellenic Centre for Marine Research (EN)

Mediterranean Sea (EN)

1791-6763
1108-393X
Mediterranean Marine Science; Vol 15, No 3 (2014); 510-519 (EL)
Mediterranean Marine Science; Vol 15, No 3 (2014); 510-519 (EN)



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