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Modelling red coral (Corallium rubrum) growth in response to temperature and nutrition

Author

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  • Galli, Giovanni
  • Bramanti, Lorenzo
  • Priori, Cristina
  • Rossi, Sergio
  • Santangelo, Giovanni
  • Tsounis, Georgios
  • Solidoro, Cosimo

Abstract

Octocorals are marine modular organisms with high ecological and economic importance. Mediterranean Red Coral (Corallium rubrum), is endemic to the Mediterranean sea and neighboring Atlantic rocky shores and has been exploited for jewelry since ancient times. Despite the lack of photosynthetic symbionts (Symbiodinium spp.), red coral growth and survival do depend on sea water temperature, as well as on trophic conditions and other physico-chemical parameters. We developed and applied a mechanistic numerical model to describe the growth of a C. rubrum colony (polyps number, polyp and gametes biomass, skeletal inorganic and organic matter) as a function of food availability and seawater temperature. The model follows a bioenergetic approach and is calibrated vs available experimental observations. Model results highlight that larger colonies are more sensitive to high temperature and actual limits of the ecological niche also depend on food availability, hydrodynamic condition and coral morphology. Bioenergetic considerations also support the conclusion that, though a modular organism, red coral exhibits constrained growth, because of the competition for available food between polyps from the same colony.

Suggested Citation

  • Galli, Giovanni & Bramanti, Lorenzo & Priori, Cristina & Rossi, Sergio & Santangelo, Giovanni & Tsounis, Georgios & Solidoro, Cosimo, 2016. "Modelling red coral (Corallium rubrum) growth in response to temperature and nutrition," Ecological Modelling, Elsevier, vol. 337(C), pages 137-148.
    • Handle: RePEc:eee:ecomod:v:337:y:2016:i:c:p:137-148
    DOI: 10.1016/j.ecolmodel.2016.06.010
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    References listed on IDEAS

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    1. Bramanti, Lorenzo & Iannelli, Mimmo & Santangelo, Giovanni, 2009. "Mathematical modelling for conservation and management of gorgonians corals: youngs and olds, could they coexist?," Ecological Modelling, Elsevier, vol. 220(21), pages 2851-2856.
    2. Malcolm McCulloch & Jim Falter & Julie Trotter & Paolo Montagna, 2012. "Coral resilience to ocean acidification and global warming through pH up-regulation," Nature Climate Change, Nature, vol. 2(8), pages 623-627, August.
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    Cited by:

    1. Miguel Mallo & Patrizia Ziveri & Victoria Reyes-García & Sergio Rossi, 2019. "Historical record of Corallium rubrum and its changing carbon sequestration capacity: A meta-analysis from the North Western Mediterranean," PLOS ONE, Public Library of Science, vol. 14(12), pages 1-20, December.
    2. Cafarelli, Barbara & Calculli, Crescenza & Cocchi, Daniela & Pignotti, Elettra, 2017. "Hierarchical non-linear mixed-effects models for estimating growth parameters of western Mediterranean solitary coral populations," Ecological Modelling, Elsevier, vol. 346(C), pages 1-9.
    3. Lavaud, Romain & Ullman, David S. & Venolia, Celeste & Thornber, Carol & Green-Gavrielidis, Lindsay & Humphries, Austin, 2023. "Production potential of seaweed and shellfish integrated aquaculture in Narragansett Bay (Rhode Island, U.S.) using an ecosystem model," Ecological Modelling, Elsevier, vol. 481(C).

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