| Abstract | The moon jellyfish Aurelia coerulea (Scyphozoa) is one of the most common and largest
jellyfish inhabiting coastal lagoons, confined bays, and marinas of temperate and subtropical coastal
waters. The annual population dynamics of A. coerulea along with some bacterial parameters (bacterial
size and biomass, total coliforms, faecal coliforms, intestinal enterococci, culturable Vibrio spp., and
culturable bacteria at 37 oC), sea surface temperature (SST), salinity, and an array of nutrients
(ammonia, nitrites, nitrates, phosphates, silicates, total nitrogen, and total phosphorus) were assessed
in the Varano lagoon (Adriatic Sea) that is subject to anthropogenic pollution. Statistical analyses
revealed that jellyfish outbreaks and their consequent biomass deposition significantly correlated
to seawater temperature, total nitrogen, phosphates, and ammonia concentrations while negative
correlations appeared with nitrite and nitrate concentrations. In addition, bacterial biomass and
Vibrio abundance correlated with each other and temperature, jellyfish density, and total nitrogen.
These findings suggest that environmental changes could trigger the occurrence of jellyfish bursts in
the lagoon which, in turn, may act as one of the central drivers of processes regulating some bacterial
components. The positive relationship between jellyfish flush-and-crash dynamics and SST suggests
that ongoing global warming will seemingly increase jellyfish outbreaks. |
| Text | 474951 2022 microbial community coastal system jellyfish bloom How Much Recurrent Outbreaks of the Moon Jellyfish May Impact the Dynamics of Bacterial Assemblages in Coastal Lagoons Loredana Stabili, Lucia Rizzo, Rosa Caprioli, Giorgio Alabiso, Stefano Piraino Department of Biological and Environmental Sciences and Technologies, University of Salento, Via Prov.le Lecce Monteroni, 73100 Lecce, Italy Institute of Water Research of the National Research Council, S.S. di Taranto, Via Roma 3, 74122 Taranto, Italy National Biodiversity Future Center NBFC , 90133 Palermo, Italy Institute of Sciences of Food Production, National Research Council CNR ISPA , Via Prov.le Lecce Monteroni, 73100 Lecce, Italy CoNISMa, Piazzale Flaminio 9, 00196 Roma, Italy The moon jellyfish Aurelia coerulea Scyphozoa is one of the most common and largest jellyfish inhabiting coastal lagoons, confined bays, and marinas of temperate and subtropical coastal waters. The annual population dynamics of A. coerulea along with some bacterial parameters bacterial size and biomass, total coliforms, faecal coliforms, intestinal enterococci, culturable Vibrio spp., and culturable bacteria at 37 oC , sea surface temperature SST , salinity, and an array of nutrients ammonia, nitrites, nitrates, phosphates, silicates, total nitrogen, and total phosphorus were assessed in the Varano lagoon Adriatic Sea that is subject to anthropogenic pollution. Statistical analyses revealed that jellyfish outbreaks and their consequent biomass deposition significantly correlated to seawater temperature, total nitrogen, phosphates, and ammonia concentrations while negative correlations appeared with nitrite and nitrate concentrations. In addition, bacterial biomass and Vibrio abundance correlated with each other and temperature, jellyfish density, and total nitrogen. These findings suggest that environmental changes could trigger the occurrence of jellyfish bursts in the lagoon which, in turn, may act as one of the central drivers of processes regulating some bacterial components. The positive relationship between jellyfish flush and crash dynamics and SST suggests that ongoing global warming will seemingly increase jellyfish outbreaks. 14 Published version Articolo in rivista Molecular Diversity Preservation International 2073 4441 Water Basel Water Basel Water Basel Water. Basel loredana.stabili STABILI LOREDANA lucia.rizzo RIZZO LUCIA |
