FN Archimer Export Format
PT J
TI Comparison of Mediterranean Pteropod Shell Biometrics and Ultrastructure from Historical (1910 and 1921) and Present Day (2012) Samples Provides Baseline for Monitoring Effects of Global Change
BT 
AF HOWES, Ella L.
   EAGLE, Robert A.
   GATTUSO, Jean-Pierre
   BIJMA, Jelle
AS 1:1,2;2:3,4;3:1,5;4:2;
FF 1:;2:;3:;4:;
C1 UPMC Univ Paris 06, Sorbonne Univ, CNRS INSU, Lab Oceanog Villefranche, 181 Chemin Lazaret, Villefranche Sur Mer, France.
   Alfred Wegener Inst, Helmholtz Zentrum Polar & Meeresforsch, Bremerhaven, Germany.
   Univ Brest, UMR CNRS UBO IRD Ifremer 6539, Lab Sci Environm Marin, IUEM, Rue Dumont DUrville Plouzane, Brest, France.
   Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Inst Environm & Sustainabil, Los Angeles, CA 90095 USA.
   Sci Po, Inst Sustainable Dev & Int Relat, 27 Rue St Guillaume, Paris, France.
C2 UNIV PARIS 06, FRANCE
   INST A WEGENER, GERMANY
   UBO, FRANCE
   UNIV CALIF LOS ANGELES, USA
   SCI PO, FRANCE
UM LEMAR
IN DOAJ
IF 2.766
TC 20
UR https://archimer.ifremer.fr/doc/00377/48792/69884.pdf
   https://archimer.ifremer.fr/doc/00377/48792/69886.pdf
   https://archimer.ifremer.fr/doc/00377/48792/69887.pdf
   https://archimer.ifremer.fr/doc/00377/48792/69888.pdf
   https://archimer.ifremer.fr/doc/00377/48792/69889.pdf
   https://archimer.ifremer.fr/doc/00377/48792/69890.pdf
   https://archimer.ifremer.fr/doc/00377/48792/69891.pdf
   https://archimer.ifremer.fr/doc/00377/48792/69892.pdf
   https://archimer.ifremer.fr/doc/00377/48792/69893.pdf
LA English
DT Article
AB Anthropogenic carbon perturbation has caused decreases in seawater pH and increases in global temperatures since the start of the 20th century. The subsequent lowering of the saturation state of CaCO3 may make the secretion of skeletons more problematic for marine calcifiers. As organisms that precipitate thin aragonite shells, thecosome pteropods have been identified as being particularly vulnerable to climate change effects. Coupled with their global distribution, this makes them ideal for use as sentinel organisms. Recent studies have highlighted shell dissolution as a potential indicator of ocean acidification; however, this metric is not applicable for monitoring pH changes in supersaturated basins. In this study, the novel approach of high resolution computed tomography (CT) scanning was used to produce quantitative 3-dimensional renderings pteropod shells to assess the potential of using this method to monitor small changes in shell biometrics that may be driven by climate change drivers. An ontogenetic analysis of the shells of Cavolinia inflexa and Styliola subula collected from the Mediterranean was used to identify suitable monitoring metrics. Modern samples were then compared to historical samples of the same species, collected during the Mediterranean leg of the Thor (1910) and Dana (1921) cruises to assess whether any empirical differences could be detected. Shell densities were calculated and scanning electron microscopy was used to compare the aragonite crystal morphology. pH for the collection years was hind-cast using temperature and salinity time series with atmospheric CO2 concentrations from ice core data. Historical samples of S. subula were thicker than S. subula shells of the same size from 2012 and C. inflexa shells collected in 1910 were significantly denser than those from 2012. These results provide a baseline for future work to develop monitoring techniques for climate change in the oceans using the novel approach of high-resolution CT scanning. 
PY 2017
PD JAN
SO Plos One
SN 1932-6203
PU Public Library Science
VL 12
IS 1
UT 000396176100152
DI 10.1371/journal.pone.0167891
ID 48792
ER

EF