10.5061/DRYAD.28816
Prazeres, Martina de Freitas
Australian Research Council
Uthicke, Sven
Australian Institute of Marine Science
Pandolfi, John M.
University of Queensland
Prazeres, M.
University of Queensland
Data from: Ocean acidification induces biochemical and morphological
changes in the calcification process of large benthic foraminifera
Dryad
dataset
2015
2015-01-20T16:33:52Z
2015-01-20T16:33:52Z
en
https://doi.org/10.1098/rspb.2014.2782
322124 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Large benthic foraminifera are significant contributors to sediment
formation on coral reefs, yet they are vulnerable to ocean acidification.
Here, we assessed the biochemical and morphological impacts of
acidification on the calcification of Amphistegina lessonii and
Marginopora vertebralis exposed to different pH conditions. We measured
growth rates (surface area and buoyant weight) and Ca-ATPase and Mg-ATPase
activities and calculated shell density using micro-computer tomography
images. In A. lessonii, we detected a significant decrease in buoyant
weight, a reduction in the density of inner skeletal chambers, and an
increase of Ca-ATPase and Mg-ATPase activities at pH 7.6 when compared
with ambient conditions of pH 8.1. By contrast, M. vertebralis showed an
inhibition in Mg-ATPase activity under lowered pH, with growth rate and
skeletal density remaining constant. While M. vertebralis is considered to
be more sensitive than A. lessonii owing to its high-Mg-calcite skeleton,
it appears to be less affected by changes in pH, based on the parameters
assessed in this study. We suggest difference in biochemical pathways of
calcification as the main factor influencing response to changes in pH
levels, and that A. lessonii and M. vertebralis have the ability to
regulate biochemical functions to cope with short-term increases in
acidity.
pH and DIC input parameterspH and DIC data used to calculate carbonate
system parameters used in the experimentInput and output
parameters.xlsxElectronic supporting materialSupporting statistical
analysisPrazeres et al_Supporting material.docx