PROJECTS / CORHOLOA

Summary Show more ↓

Predicted changes in seawater chemistry resulting from climate change will affect all marine life, including the microbial dynamics and biogeochemical cycling in the ocean. In deep-sea ecosystems, cold-water corals (CWC) are bioengineer species considered vulnerable to such threats. Due to their heterotrophic feeding, broadly limited in nitrogen and carbon supply, these organisms rely on their microbial consortium to ensure their nutrition and health.

Project reference

EXPL/CTA-AMB/1294/2021


Funding agency

Fundação para a Ciência e a Tecnologia


Time period

01/01/2022 to 31/12/2023



Involved team members
Teresa Cerqueira
Principal Investigator
Marina Carreiro-Silva
Principal Investigator
Gal·la Edery
Research Assistant
António Godinho
Research Assistant


Collaborators
Maria Inês Silva Inês Martins Anaïs Sire de Vilar Beatriz Arzeni

Group's role

We lead the CORHOLOA project, all packages.


Main Results Show more ↓
CWCs were sampled in situ, after aquaria acclimatization, under experimental conditions simulating an ocean acidification scenario predicted for 2100 (IPCC8.5; pCO2=1,000 atm), and toxic sediment plumes expected from mining of seafloor massive sulphide deposits from an inactive hydrothermal vent field in the Azores. Our first analyses showed that different coral taxa host distinct bacterial communities, and that the coral microbiomes undergo compositional changes after the transition to the aquaria and under OA conditions. Alpha diversity indexes presented a higher microbial diversity after the transition to the aquaria, which become generally higher with the time of captivity and after induced stresses (ocean acidification and deep-sea mining).


CORHOLOA Gallery

Departamento de Oceanografia e Pescas

Rua Prof. Doutor Frederico Machado, 4

9901-862 Horta, Portugal

Azores Deep-sea Research

azoresdeepsea@gmail.com

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