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. 2021 Mar 24;8(3):201788. doi: 10.1098/rsos.201788

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© 2021 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 4. — Matrilineal demographic history of 22 Gray's beaked whales based on mitochondrial genomes and environmental context. (a) Bayesian skyline plot showing median female effective population size and 95% confidence intervals through time; (b) export production as described by marine barite (Ba/Fe) as a qualitative proxy across time [55] and (c) Mg/Ca in Noctiluca pachyderma as a quantitative estimate of past sea surface temperature (SST) [56]. Current SST in the Southern Ocean sampling locations is −2.5°C.