Cold-water coral energy reserves and calcification in contrasting fjord environments.

Autor: Beck KK; Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany. kristina.beck@ed.ac.uk.; University of Bremen, Bremen, Germany. kristina.beck@ed.ac.uk.; University of Edinburgh, Edinburgh, UK. kristina.beck@ed.ac.uk., Schmidt-Grieb GM; Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany., Kayser AS; Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany.; Carl von Ossietzky University of Oldenburg, Oldenburg, Germany., Wendels J; Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany.; Heinrich Heine University Düsseldorf, Düsseldorf, Germany., Kler Lago A; Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany.; University of Bremen, Bremen, Germany., Meyer S; Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany., Laudien J; Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany., Häussermann V; Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile.; Fundación San Ignacio del Huinay, Puerto Montt, Chile., Richter C; Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany.; University of Bremen, Bremen, Germany., Wall M; Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany.; GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Mar 07; Vol. 14 (1), pp. 5649. Date of Electronic Publication: 2024 Mar 07.
DOI: 10.1038/s41598-024-56280-2
Abstrakt: The relationship between energy reserves of cold-water corals (CWCs) and their physiological performance remains largely unknown. In addition, it is poorly understood how the energy allocation to different metabolic processes might change with projected decreasing food supply to the deep sea in the future. This study explores the temporal and spatial variations of total energy reserves (proteins, carbohydrates and lipids) of the CWC Desmophyllum dianthus and their correlation with its calcification rate. We took advantage of distinct horizontal and vertical physico-chemical gradients in Comau Fjord (Chile) and examined the changes in energy reserves over one year in an in situ reciprocal transplantation experiment (20 m vs. 300 m and fjord head vs. mouth). Total energy reserves correlated positively with calcification rates. The fast-growing deep corals had higher and less variable energy reserves, while the slower-growing shallow corals showed pronounced seasonal changes in energy reserves. Novel deep corals (transplanted from shallow) were able to quickly increase both their calcification rates and energy reserves to similar levels as native deep corals. Our study shows the importance of energy reserves in sustaining CWC growth in spite of aragonite undersaturated conditions (deep corals) in the present, and potentially also future ocean.
(© 2024. The Author(s).)
Databáze: MEDLINE
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