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Abstract
Explosive volcanic submarine activity is expected to affect seagrass communities due to sudden and dramatic changes in the physical and chemical features of sea water and sediments, with possibly large ecosystem effects. However, seagrass response to the harsh environmental conditions that arise due to explosive volcanism is as yet unexplored as it is not easy to predict when and where an eruption will occur. Here, we investigate the uptake of hydrothermal carbon within the seagrass Posidonia oceanica by the analysis of Δ13C and growth rates in tissue laid down before and after an exceptional and massive hydrothermal gas release in the Aeolian Islands (Italy, Mediterranean Sea). Hydrothermal submarine activity was recorded by P. oceanica, which showed a large and persistent 13C-depletion in both scales and rhizomes in the site close to the eruption. Both increased CO2 availability and reduced carbon demand, as a consequence of stressful environmental conditions (e.g. ....

Mediterranean Sea , Oceans General , United Kingdom , British Ecological Society , Aeolian Islands , Aquatic Plant Ecology , Co2 Emissions , Carbon Stable Isotopes , Hydrothermal Fluids , Ocean Acidification , மத்திய தரைக்கடல் கடல் , பெருங்கடல்கள் ஜநரல் , ஒன்றுபட்டது கிஂக்டம் , பிரிட்டிஷ் சுற்றுச்சூழல் சமூகம் , காற்றுக்குரிய தீவுகள் , நீர்வாழ் ஆலை சூழலியல் , கோ2 உமிழ்வு , கார்பன் நிலையான ஐசோடோப்புகள் , வெப்ப நிலை ,