Viral decay and production in sediments of the Mediterranean Sea
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2011
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| _version_ | 1867170460773384192 |
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| author | Corinaldesi, Cinzia Dell'Anno, Antonio Magagnini, Mirko Danovaro, Roberto |
| author_facet | Corinaldesi, Cinzia Dell'Anno, Antonio Magagnini, Mirko Danovaro, Roberto |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Here, for the first time, we have carried out synoptic measurements of viral production and decay rates in continental-shelf and deep-sea sediments of the Mediterranean Sea to explore the viral balance. The net viral production and decay rates were significantly correlated, and were also related to prokaryotic heterotrophic production. The addition of enzymes increased the decay rates in the surface sediments, but not in the subsurface sediments. Both the viral production and the decay rates decreased significantly in the deeper sediment layers, while the virus-to-prokaryote abundance ratio increased, suggesting a high preservation of viruses in the subsurface sediments. Viral decay did not balance viral production at any of the sites investigated, accounting on average for c. 32% of the gross viral production in the marine sediments. We estimate that the carbon (C) released by viral decay contributed 6-23% to the total C released by the viral shunt. Because only ca. 2% of the viruses produced can infect other prokaryotes, the majority is not subjected to direct lysis and potentially remains as a food source for benthic consumers. The results reported here suggest that viral decay can play an important role in biogeochemical cycles and benthic trophodynamics. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_769824 |
| institution | PANGAEA |
| language | en |
| publishDate | 2011 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Viral decay and production in sediments of the Mediterranean Sea Corinaldesi, Cinzia Dell'Anno, Antonio Magagnini, Mirko Danovaro, Roberto E; Gulf of Lions; HERM1_CLD1000-2; HERM1_SOS1000-2; HERM1_SOS450-2; hermes; HERMES; hermione; HERMIONE; Hotspot Ecosystem Research and Mans Impact On European Seas; Hotspot Ecosystem Research on the Margins of European Seas; M; MUC; MultiCorer; N; Universitatis; Universitatis_Herm1 Here, for the first time, we have carried out synoptic measurements of viral production and decay rates in continental-shelf and deep-sea sediments of the Mediterranean Sea to explore the viral balance. The net viral production and decay rates were significantly correlated, and were also related to prokaryotic heterotrophic production. The addition of enzymes increased the decay rates in the surface sediments, but not in the subsurface sediments. Both the viral production and the decay rates decreased significantly in the deeper sediment layers, while the virus-to-prokaryote abundance ratio increased, suggesting a high preservation of viruses in the subsurface sediments. Viral decay did not balance viral production at any of the sites investigated, accounting on average for c. 32% of the gross viral production in the marine sediments. We estimate that the carbon (C) released by viral decay contributed 6-23% to the total C released by the viral shunt. Because only ca. 2% of the viruses produced can infect other prokaryotes, the majority is not subjected to direct lysis and potentially remains as a food source for benthic consumers. The results reported here suggest that viral decay can play an important role in biogeochemical cycles and benthic trophodynamics. |
| title | Viral decay and production in sediments of the Mediterranean Sea |
| topic | E; Gulf of Lions; HERM1_CLD1000-2; HERM1_SOS1000-2; HERM1_SOS450-2; hermes; HERMES; hermione; HERMIONE; Hotspot Ecosystem Research and Mans Impact On European Seas; Hotspot Ecosystem Research on the Margins of European Seas; M; MUC; MultiCorer; N; Universitatis; Universitatis_Herm1 |
| url | https://doi.org/10.1594/PANGAEA.769824 |