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A quantitative assessment of the mechanical strength of the polar pteropod Limacina helicina antarctica shell
journal contribution
posted on 2023-05-17, 19:11 authored by Teniswood, CMH, Roberts, D, Howard, WR, Bradby, JEThis work directly measures the mechanical properties of pteropod shells collected from the Southern Ocean on the 2007 midsummer Subantarctic Zone Sensitivity to Environmental Change (SAZ-Sense) voyage. Shells from the common Southern Ocean pteropod Limacina helicina antarctica were subjected to mechanical analyses in combination with detailed morphological studies. Average hardness and modulus of 2.30 ± 0.07 GPa and 45.27 ± 0.91 GPa, respectively were calculated from several hundred nanoindentation measurements taken from multiple positions across twelve shells of the same species collected under identical conditions. Quantitative data such as these are critical to establish a reference point for future comparative studies and to both understand and evaluate the implications of further ocean acidification on the structural integrity of these common polar calcifiers, particularly in light of their role in the Southern Ocean carbon cycle and food web.
History
Publication title
ICES Journal of Marine ScienceVolume
70Issue
7Pagination
1499-1505ISSN
1054-3139Department/School
Institute for Marine and Antarctic StudiesPublisher
Oxford University PressPlace of publication
United KingdomRights statement
Copyright 2013 International Council for the Exploration of the Sea.Repository Status
- Restricted