Planktonic metabolism in a Mediterranean reservoir during a ear-surface cyanobacterial bloom

• DOI: 10.23818/limn.35.10
• Publication Date: 2022-01-05T10:47:50Z
• Authors: Moreno-Ostos, En...; Palomino-Torres,...; Escot, C.; Blanco, J. M.
• Keywords: Bloom

Planktonic metabolism in a Mediterranean reservoir during near-surface cyanobacterial bloomSummer blooms of large, filamentous, nitrogen-fixing and potentially toxic cyanobacteria are characteristic many productive, warm monomictic reservoirs the region, where they constitute stable assemblages.The accumulation positively buoyant at surface layers water column favours -among others -the interception light, inorganic carbon nitrogen fluxes from atmosphere, giving these prokaryotes competitive advantage over other phytoplankton groups.Cyanobacterial can cause deleterious effects to quality ecosystem services.Although structure plankton community is well-known limnological issue, few studies have been undertaken on its functional characteristics.In this study, we used high-resolution autonomous monitoring system investigate short-term changes gross primary production (GPP), net (NEP) respiration (R) waters dense summer bloom.Our results demonstrate that bloom, showed well-balanced planktonic metabolism, with mean GPP:R ratio not significantly different than 1 therefore close positive correlations between GPP R. Additionally, found correlation daily integrated incident light NEP:GPP ratio, while mixed-layer depth were negatively correlated, suggesting central role for physical processes control persistence bloom.The implications bloom stability relevance management noted.