Southern Ocean pteropods at risk from ocean warming and acidification

Gardner, Jessie, Manno, Clara, Bakker, Dorothee C. E., Peck, Victoria L. and Tarling, Geraint A. (2018) Southern Ocean pteropods at risk from ocean warming and acidification. Marine Biology, 165 (1). ISSN 0025-3162

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Abstract

Early life stages of marine calcifiers are particularly vulnerable to climate change. In the Southern Ocean aragonite undersaturation events and areas of rapid warming already occur and are predicted to increase in extent. Here, we present the first study to successfully hatch the polar pteropod Limacina helicina antarctica and observe the potential impact of exposure to increased temperature and aragonite undersaturation resulting from ocean acidification (OA) on the early life stage survival and shell morphology. High larval mortality (up to 39%) was observed in individuals exposed to perturbed conditions. Warming and OA induced extensive shell malformation and dissolution, respectively, increasing shell fragility. Furthermore, shell growth decreased, with variation between treatments and exposure time. Our results demonstrate that short-term exposure through passing through hotspots of OA and warming poses a serious threat to pteropod recruitment and long-term population viability.

Item Type: Article
Faculty \ School: Faculty of Science
Faculty of Science > School of Environmental Sciences
Faculty of Science > School of Biological Sciences
Related URLs:
Depositing User: Pure Connector
Date Deposited: 14 Nov 2017 06:04
Last Modified: 13 Oct 2019 00:29
URI: https://ueaeprints.uea.ac.uk/id/eprint/65429
DOI: 10.1007/s00227-017-3261-3

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