Brachiopods as archives of intrannual, annual, and interannual environmental variations

Crippa, G. ORCID: https://orcid.org/0000-0002-5543-8128; Jurikova, H.; Leng, M.J. ORCID: https://orcid.org/0000-0003-1115-5166; Zanchi, M.; Harper, E.M.; Rae, J.W.B.; Savickaite, K.; Viaretti, M. ORCID: https://orcid.org/0000-0003-1539-8157; Angiolini, L.. 2025 Brachiopods as archives of intrannual, annual, and interannual environmental variations. Limnology and Oceanography Letters. 10.1002/lol2.70004

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Official URL: https://doi.org/10.1002/lol2.70004

Abstract/Summary

Brachiopods have been employed for environmental and climatic reconstructions in the near and geological past. Traditionally, one datapoint is obtained per shell, providing time‐averaged bulk signals. However, brachiopods also have the potential to provide time‐resolved information on (sub)annual timescales, but this has been understudied due to difficulties in accounting for brachiopod shell growth. We investigated the distribution of δ 18 O, δ 13 C and Element/Ca along growth profiles of three Recent terebratulides from temperate and polar latitudes. We employed a novel approach using the Brody–Bertalanffy equation to transform shell distances into ages, permitting the study of periodicity in the measured signatures. We show that, superimposed on ontogenetic trends, faster‐growing temperate species record annual and intrannual changes at collection sites, whereas slower‐growing Antarctic species are also controlled by endogenous cycles. δ 18 O profiles reflect annual and intrannual variations in midlatitudes and interannual variations at high latitudes. δ 13 C and Element/Ca are additionally influenced by vital effects.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1002/lol2.70004
ISSN:	2378-2242
Date made live:	20 May 2025 13:34 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/539467

Item Type:

Publication - Article

Digital Object Identifier (DOI):

10.1002/lol2.70004

ISSN:

2378-2242

Date made live:

20 May 2025 13:34 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/539467