{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,9]],"date-time":"2026-04-09T02:42:18Z","timestamp":1775702538279,"version":"3.50.1"},"reference-count":55,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2025,11,24]],"date-time":"2025-11-24T00:00:00Z","timestamp":1763942400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004769","name":"Universit\u00e0 degli Studi di Pavia","doi-asserted-by":"publisher","award":["FAR 2021\u2010 2023"],"award-info":[{"award-number":["FAR 2021\u2010 2023"]}],"id":[{"id":"10.13039\/501100004769","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Phycology"],"published-print":{"date-parts":[[2025,12]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    The coccolithophore\n                    <jats:italic>Helicosphaera carteri<\/jats:italic>\n                    is an understudied, yet ecologically and biogeochemically important, marine calcifier. Hence, its response to ocean acidification has implications for ecosystem function and the marine carbon cycle. Here we employed dilute batch cultures featuring a coupled C\u2010system manipulation (295, 444, and 600 \u03bcatm CO\n                    <jats:sub>2<\/jats:sub>\n                    ) to analyze the response of\n                    <jats:italic>H. carteri<\/jats:italic>\n                    in terms of growth rate and particulate carbon production, two key eco\u2010physiological and biogeochemical parameters. We highlight that both growth rate and organic carbon production are CO\n                    <jats:sub>2<\/jats:sub>\n                    limited at 295 \u00b5atm but are not proton inhibited at 600 \u00b5atm of CO\n                    <jats:sub>2<\/jats:sub>\n                    . This finding, combined with the maintenance of a stable inorganic production rate, places\n                    <jats:italic>H. carteri<\/jats:italic>\n                    among the coccolithophores less sensitive to seawater acidification. In addition, we tested a widely applied assumption underpinning the determination of carbon production, namely the constancy of particulate carbon quotas over the course of a dilute batch culture. We determined that the assumption holds true, an important validation of a method used in many publications.\n                  <\/jats:p>","DOI":"10.1111\/jpy.70103","type":"journal-article","created":{"date-parts":[[2025,11,24]],"date-time":"2025-11-24T14:48:21Z","timestamp":1763995701000},"page":"1576-1590","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["<i>Helicosphaera carteri<\/i>\n                    (Prymnesiophyceae) under high carbon dioxide: An experimental study"],"prefix":"10.1111","volume":"61","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2318-0521","authenticated-orcid":false,"given":"Stefania","family":"Bianco","sequence":"first","affiliation":[{"name":"Department of Earth and Environmental Sciences University of Pavia  Pavia Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0884-2686","authenticated-orcid":false,"given":"Manuela","family":"Bordiga","sequence":"additional","affiliation":[{"name":"National Institute of Oceanography and Applied Geophysics \u2013 OGS  Trieste Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7211-4889","authenticated-orcid":false,"given":"Gerald","family":"Langer","sequence":"additional","affiliation":[{"name":"National Institute of Oceanography and Applied Geophysics \u2013 OGS  Trieste Italy"},{"name":"Institute of Environmental Science and Technology (ICTA), Universitat Aut\u00f2noma de Barcelona (UAB)  Bellaterra Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5576-0301","authenticated-orcid":false,"given":"Patrizia","family":"Ziveri","sequence":"additional","affiliation":[{"name":"Institute of Environmental Science and Technology (ICTA), Universitat Aut\u00f2noma de Barcelona (UAB)  Bellaterra Spain"},{"name":"Catalan Institution for Research and Advanced Studies (ICREA)  Barcelona Spain"},{"name":"Department of Animal Biology Plant Biology and Ecology (BABVE) Universitat Aut\u00f2noma de Barcelona  Bellaterra Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9191-9957","authenticated-orcid":false,"given":"Federica","family":"Cerino","sequence":"additional","affiliation":[{"name":"National Institute of Oceanography and Applied Geophysics \u2013 OGS  Trieste Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0213-2782","authenticated-orcid":false,"given":"Federica","family":"Relitti","sequence":"additional","affiliation":[{"name":"National Institute of Oceanography and Applied Geophysics \u2013 OGS  Trieste Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3148-8347","authenticated-orcid":false,"given":"Vincenzo Alessandro","family":"Laudicella","sequence":"additional","affiliation":[{"name":"National Institute of Oceanography and Applied Geophysics \u2013 OGS  Trieste Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0893-759X","authenticated-orcid":false,"given":"Andrea","family":"Di Giulio","sequence":"additional","affiliation":[{"name":"Department of Earth and Environmental Sciences University of Pavia  Pavia Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1728-7226","authenticated-orcid":false,"given":"Claudia","family":"Lupi","sequence":"additional","affiliation":[{"name":"Department of Earth and Environmental Sciences University of Pavia  Pavia Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2025,11,24]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/nph.12225"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.pocean.2015.04.012"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.4319\/lo.2011.56.6.2040"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.5194\/bg\u201022\u20101821\u20102025"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/lno.12738"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11356\u2010015\u20104999\u20100"},{"key":"e_1_2_11_8_1","doi-asserted-by":"crossref","unstructured":"Dickson A. 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