Climate change impacts on the biota and on vulnerable habitats of the deep Mediterranean Sea
Deep sea is the largest and likely the most biologically diverse ecosystem of the world, but it is also the most unknown. The Mediterranean Sea (< 1% of the ocean surface and contains only the 0.3% of its volume) is a hot spot of marine biodiversity containing ca 7.5% of the world marine biodiver...
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ftzenodo:oai:zenodo.org:1462711 2024-09-15T18:28:25+00:00 Climate change impacts on the biota and on vulnerable habitats of the deep Mediterranean Sea Roberto Danovaro 2018-06-21 https://doi.org/10.1007/s12210-018-0725-4 unknown Zenodo https://zenodo.org/communities/merces_project https://zenodo.org/communities/eu https://doi.org/10.1007/s12210-018-0725-4 oai:zenodo.org:1462711 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Global change Deep Mediterranean Sea Deep-sea biology Ecosystem vulnerability info:eu-repo/semantics/article 2018 ftzenodo https://doi.org/10.1007/s12210-018-0725-4 2024-07-26T14:53:13Z Deep sea is the largest and likely the most biologically diverse ecosystem of the world, but it is also the most unknown. The Mediterranean Sea (< 1% of the ocean surface and contains only the 0.3% of its volume) is a hot spot of marine biodiversity containing ca 7.5% of the world marine biodiversity, associated with a multitude of habitats spreading from the coast to its dark portion (e.g., coral banks, seamounts, canyons, and hydrothermal vents). Its deep-sea ecosystems are increasingly subjected to direct anthropogenic impacts (including overfishing, chemical pollution, dumping, litter, and plastics), which are often over-imposed to the increasing effects of global change. Here, are illustrated the expected impacts of shifts in the main variables such as temperature, food supply, pH, and oxygen on the deep Mediterranean Sea ecosystems. One of the most consequences is related to shifts in the quality and quantity of the inputs of organic matter to the deep seafloor. The deep Mediterranean Sea is far more oligotrophic than other oceans at equal depths, and although deep-sea biota reacts to food shortage by increasing their efficiency in its use, a decrease in food availability can have dramatic effects on its food webs. The deep Mediterranean Sea is showing a clear rise of deep-water temperatures. In the last decades, deep-water warming is accelerating at unprecedented rates, causing a significant shift in biodiversity even for variations in the order of 0.1°C. Higher temperatures increase deep-sea metabolism, thus exacerbating the effects of food limitation. Moreover, ocean acidification reduces the calcification capacity of corals and alters their metabolism. Although it can be expected that increasing temperatures might increase the potential spread of oxygen minimum zone, so far, only hypoxic events were reported in Mediterranean Sea. The analysis of potential ecosystem vulnerability indicates that the ecosystems that are most sensitive to global change are deep-water coral systems and deep-sea plains. ... Article in Journal/Newspaper Ocean acidification Zenodo Rendiconti Lincei. Scienze Fisiche e Naturali 29 3 525 541 |
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Global change Deep Mediterranean Sea Deep-sea biology Ecosystem vulnerability |
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Global change Deep Mediterranean Sea Deep-sea biology Ecosystem vulnerability Roberto Danovaro Climate change impacts on the biota and on vulnerable habitats of the deep Mediterranean Sea |
topic_facet |
Global change Deep Mediterranean Sea Deep-sea biology Ecosystem vulnerability |
description |
Deep sea is the largest and likely the most biologically diverse ecosystem of the world, but it is also the most unknown. The Mediterranean Sea (< 1% of the ocean surface and contains only the 0.3% of its volume) is a hot spot of marine biodiversity containing ca 7.5% of the world marine biodiversity, associated with a multitude of habitats spreading from the coast to its dark portion (e.g., coral banks, seamounts, canyons, and hydrothermal vents). Its deep-sea ecosystems are increasingly subjected to direct anthropogenic impacts (including overfishing, chemical pollution, dumping, litter, and plastics), which are often over-imposed to the increasing effects of global change. Here, are illustrated the expected impacts of shifts in the main variables such as temperature, food supply, pH, and oxygen on the deep Mediterranean Sea ecosystems. One of the most consequences is related to shifts in the quality and quantity of the inputs of organic matter to the deep seafloor. The deep Mediterranean Sea is far more oligotrophic than other oceans at equal depths, and although deep-sea biota reacts to food shortage by increasing their efficiency in its use, a decrease in food availability can have dramatic effects on its food webs. The deep Mediterranean Sea is showing a clear rise of deep-water temperatures. In the last decades, deep-water warming is accelerating at unprecedented rates, causing a significant shift in biodiversity even for variations in the order of 0.1°C. Higher temperatures increase deep-sea metabolism, thus exacerbating the effects of food limitation. Moreover, ocean acidification reduces the calcification capacity of corals and alters their metabolism. Although it can be expected that increasing temperatures might increase the potential spread of oxygen minimum zone, so far, only hypoxic events were reported in Mediterranean Sea. The analysis of potential ecosystem vulnerability indicates that the ecosystems that are most sensitive to global change are deep-water coral systems and deep-sea plains. ... |
format |
Article in Journal/Newspaper |
author |
Roberto Danovaro |
author_facet |
Roberto Danovaro |
author_sort |
Roberto Danovaro |
title |
Climate change impacts on the biota and on vulnerable habitats of the deep Mediterranean Sea |
title_short |
Climate change impacts on the biota and on vulnerable habitats of the deep Mediterranean Sea |
title_full |
Climate change impacts on the biota and on vulnerable habitats of the deep Mediterranean Sea |
title_fullStr |
Climate change impacts on the biota and on vulnerable habitats of the deep Mediterranean Sea |
title_full_unstemmed |
Climate change impacts on the biota and on vulnerable habitats of the deep Mediterranean Sea |
title_sort |
climate change impacts on the biota and on vulnerable habitats of the deep mediterranean sea |
publisher |
Zenodo |
publishDate |
2018 |
url |
https://doi.org/10.1007/s12210-018-0725-4 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://zenodo.org/communities/merces_project https://zenodo.org/communities/eu https://doi.org/10.1007/s12210-018-0725-4 oai:zenodo.org:1462711 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.1007/s12210-018-0725-4 |
container_title |
Rendiconti Lincei. Scienze Fisiche e Naturali |
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29 |
container_issue |
3 |
container_start_page |
525 |
op_container_end_page |
541 |
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