How can we use oxygen isotopes from ostracods to reconstruct abrupt climate changes from the Holocene?

This blog article is a contribution to the PAGES Early-Career Network (ECN). The Holocene has experienced several abrupt climate changes. In our latest post, Joanna Tindall explains how we can use oxygen isotopes from ostracods (seed shrimps) to study these past climate events and why the information they provide helps us understand the present and future.