Vertical distribution and diurnal migration of atlantid heteropods

Wall-Palmer, Deborah and Metcalfe, Brett and Leng, Melanie J. and Sloane, Hilary J. and Ganssen, Gerald and Vinayachandran, P.N. and Smart, Christopher W. (2018) Vertical distribution and diurnal migration of atlantid heteropods. Marine Ecology Progress Series, 587 . pp. 1-15. ISSN 1616-1599

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Abstract

Understanding the vertical distribution and migratory behaviour of shelled holoplanktonic gastropods is essential in determining the environmental conditions to which they are exposed. This is increasingly important in understanding the effects of ocean acidification and climate change. Here we investigated the vertical distribution of atlantid heteropods by collating data from publications and collections and using the oxygen isotope (δ18O) composition of single aragonitic shells. Data from publications and collections show 2 patterns of migration behaviour: small species that reside in shallow water at all times, and larger species that make diurnal migrations from the surface at night to deep waters during the daytime. The δ18O data show that all species analysed (n = 16) calcify their shells close to the deep chlorophyll maximum. This was within the upper 110 m of the ocean for 15 species, and down to 146 m for a single species. These findings confirm that many atlantid species are exposed to large environmental variations over a diurnal cycle and may already be well adapted to face ocean changes. However, all species analysed rely on aragonite supersaturated waters in the upper <150 m of the ocean to produce their shells, a region that is projected to undergo the earliest and greatest changes in response to increased anthropogenic CO2.

Item Type: Article
Keywords: Atlantidae; Gastropod; Vertical distribution; Diurnal migration; Oxygen isotopes; Calcification; Ocean acidification
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Biosciences
Related URLs:
URLURL Type
http://www.int-res.com/abstracts/meps/v587/UNSPECIFIED
Depositing User: Eprints, Support
Date Deposited: 26 Jan 2018 10:28
Last Modified: 28 Jan 2018 05:04
URI: http://eprints.nottingham.ac.uk/id/eprint/49353

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