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- dd87ac68-c7b8-4641-a610-5587978d6ff5 description "Global warming and ocean acidification are predicted to impinge on deep sea ecosystems with deleterious consequences on their biodiversity and ecosystem services. More specifically, human-induced global climate changes may pose a major threat to cold water corals which are known to engineer some of the most complex, diverse and charismatic habitats at bathyal depths. Furthermore, these corals may suffer in the future from an unprecedented destruction of their habitat from additional pressures (e.g. bottom fishing, deep-sea mining), which may further modify their structure and function. However, the adaptive potential of cold water corals in response to increasing warming remains largely undocumented. In the Mediterranean Sea, the analysis of radiometrically-dated fossil specimens shows a general decline in the abundance of cold water corals that were exposed to temperatures higher than 14°C in the past. Considering that modern intermediate and deep Mediterranean waters are close or above 14°C, this suggests that most of the Mediterranean cold water coral species thrive today very close to their physiological threshold, , with deleterious consequences on deep-sea ecosystems and biodiversity. This multidisciplinary case study will target those Mediterranean cold water coral habitats that develop under thermal conditions very close to 14°C. Maps of the current cold water coral distribution in the Mediterranean Sea will be correlated to chemical and physical parameters (e.g. temperature, salinity, nutrients, dissolved oxygen concentration) from field data and modelling. The fossil records will be also analysed through U/Th dating and isotopic geochemistry, and the abundance of fossil corals will be correlated to proxy-based environmental reconstructions. Future scenarios will be provided based on regional models (e.g. Med-CORDEX) and will focus on the increase of temperature and consequent cold water coral habitat loss. The role of other parameters such as nutrient concentration and decreasing pH will be also investigated. This case study involves experts in paleoclimatology, paleoecology, physical and chemical oceanography, biology, ecology and modelling. Key hypothesis to be tested: the seawater temperature is the main environmental factor controlling the past, present and future distribution of cold water corals in the Mediterranean Sea." assertion.
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- dd87ac68-c7b8-4641-a610-5587978d6ff5 dateCreated "2023-06-22 09:36:47.998446+00:00" assertion.
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- dd87ac68-c7b8-4641-a610-5587978d6ff5 cite-as "Castellan, Giorgio. "Spatial and temporal distribution of Cold Water Corals (CWC) in the Mediterranean Sea." ROHub. Jun 22 ,2023. https://w3id.org/ro-id/dd87ac68-c7b8-4641-a610-5587978d6ff5." assertion.
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- dd87ac68-c7b8-4641-a610-5587978d6ff5 name "Spatial and temporal distribution of Cold Water Corals (CWC) in the Mediterranean Sea" assertion.
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- dd87ac68-c7b8-4641-a610-5587978d6ff5 creator 0000-0001-6084-1504 assertion.
- dd87ac68-c7b8-4641-a610-5587978d6ff5 dateModified "2025-03-05 01:19:13.300682+00:00" assertion.
- dd87ac68-c7b8-4641-a610-5587978d6ff5 datePublished "2023-06-22 09:36:47.998446+00:00" assertion.
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- dd87ac68-c7b8-4641-a610-5587978d6ff5 license no-permission assertion.
- dd87ac68-c7b8-4641-a610-5587978d6ff5 keywords "climate change" assertion.
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- dd87ac68-c7b8-4641-a610-5587978d6ff5 keywords "cold-water corals" assertion.
- dd87ac68-c7b8-4641-a610-5587978d6ff5 keywords "habitat" assertion.
- dd87ac68-c7b8-4641-a610-5587978d6ff5 keywords "mediterranean sea" assertion.
- dd87ac68-c7b8-4641-a610-5587978d6ff5 keywords "sea temperature" assertion.
- dd87ac68-c7b8-4641-a610-5587978d6ff5 author 0000-0001-6084-1504 assertion.