Biology and Ecophysiology of Mediterranean Cold–Water Corals

Reynaud, Stéphanie; Ferrier‐Pagés, Christine

doi:10.1007/978-3-319-91608-8_35

Cited by 10 publications

(13 citation statements)

References 175 publications

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“…70% of known CWCs reefs will be exposed to waters corrosive to aragonite before the end of 21st century (Tittensor et al, 2010) up to evoking negative to counteractive scenarios for their eventual survival (Maier et al, 2011;McCulloch et al, 2012;Gammon et al, 2018). However, some studies reveal that net calcification rates, as well as dissolution rates of exposed skeleton and respiration rates of different deep-sea coral species, do not significantly change when exposed to high seawater pCO 2 , with D. cornigera showing no physiological alterations (Movilla et al, 2014;Rodolfo-Metalpa et al, 2015;Reynaud and Ferrier-Pagès, 2019).…”

Section: Discussionmentioning

confidence: 99%

“…In several studies investigating the biological response of different deep-sea corals (mainly M. oculata, D. pertusum, and D. cornigera) to the increasing sea water temperature, D. pertusum showed decreased fitness performances at 15 • C (Brooke et al, 2013) while M. oculata appeared more tolerant (Orejas et al, 2011). The same thermal treatments applied on specimens of D. cornigera revealed an higher ability to capture preys (zooplankton) and an increase in the growth and respiration rates at temperature regimes up to over 16 • C (Gori et al, 2014;Reynaud and Ferrier-Pagès, 2019). However, information about the spatial distribution of D. cornigera and its temperature preferences from in situ observations are still poor and fragmented, lessening our capability to make predictions regarding the fate of this species in relation with global changes.…”

Section: Introductionmentioning

confidence: 93%

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The Yellow Coral Dendrophyllia cornigera in a Warming Ocean

et al. 2019

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Ocean warming is expected to impinge detrimentally on marine ecosystems worldwide up to impose extreme environmental conditions capable to potentially jeopardize the good ecological status of scleractinian coral reefs at shallow and bathyal depths. The integration of literature records with newly acquired remotely operated vehicle (ROV) data provides an overview of the geographic distribution of the temperate coral Dendrophyllia cornigera spanning the eastern Atlantic Ocean to the whole Mediterranean Sea. In addition, we extracted temperature values at each occurrence site to define the natural range of this coral, known to maintain its physiological processes at 16 • C. Our results document a living temperature range between ∼7 • C and 17 • C, suggesting that the natural thermal tolerance of this eurybathic coral may represent an advantage for its survival in a progressively warming ocean.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 93%

The Yellow Coral Dendrophyllia cornigera in a Warming Ocean

et al. 2019

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“…Respiration rate reflects the metabolic activity to support basic functions of CWC, which is influenced by both feeding and temperature [ 42 , 43 ]. Under high feeding regime, respiration increases as a response to the higher metabolic rate to process food, while a decrease in respiration is observed subsequent to sub-optimal feeding or starvation conditions [ 32 , 34 , 44 ].…”

Section: Resultsmentioning

confidence: 99%

“…It seems respiration is very resilient to change from particle exposure in the laboratory. It has been suggested that this might be due to optimal coral feeding in laboratory experiments, masking the real effect of stressors on the respiration rates [ 42 ]. To our knowledge, no study has looked at the effect on respiration rate to drilling or sediment particles on starved CWC.…”

Section: Resultsmentioning

confidence: 99%

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Identification of tolerance levels on the cold-water coral Desmophyllum pertusum (Lophelia pertusa) from realistic exposure conditions to suspended bentonite, barite and drill cutting particles

et al. 2022

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Cold-water coral (CWC) reefs are numerous and widespread along the Norwegian continental shelf where oil and gas industry operate. Uncertainties exist regarding their impacts from operational discharges to drilling. Effect thresholds obtained from near-realistic exposure of suspended particle concentrations for use in coral risk modeling are particularly needed. Here, nubbins of Desmophyllum pertusum (Lophelia pertusa) were exposed shortly (5 days, 4h repeated pulses) to suspended particles (bentonite BE; barite BA, and drill cuttings DC) in the range of ~ 4 to ~ 60 mg.l-1 (actual concentration). Physiological responses (respiration rate, growth rate, mucus-related particulate organic carbon OC and particulate organic nitrogen ON) and polyp mortality were then measured 2 and 6 weeks post-exposure to assess long-term effects. Respiration and growth rates were not significantly different in any of the treatments tested compared to control. OC production was not affected in any treatment, but a significant increase of OC:ON in mucus produced by BE-exposed (23 and 48 mg.l-1) corals was revealed 2 weeks after exposure. Polyp mortality increased significantly at the two highest DC doses (19 and 49 mg.l-1) 2 and 6 weeks post-exposure but no significant difference was observed in any of the other treatments compared to the control. These findings are adding new knowledge on coral resilience to short realistic exposure of suspended drill particles and indicate overall a risk for long-term effects at a threshold of ~20 mg.l-1.

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