Bloom-forming cyanobacteria and dinoflagellates in five Argentinian reservoirs:Multi-year sampling  

作　　者：Florencia Soledad Alvarez Dalinger Borja Claudia Nidia Veronica Laura Lozano Liliana Beatriz Morana María Monica Salusso 

机构地区：[1]Facultad de Ciencias Naturales,Universidad Nacional de Salta,Avenida Bolivia 5150,Salta,4400,Argentina [2]Consejo Nacional de Investigaciones Científicas y T'ecnicas(CONICET),Godoy Cruz 2290,Ciudad Autonoma de Buenos Aires,Argentina

出　　处：《Water Biology and Security》2024年第1期28-36,共9页水生生物与安全（英文）

摘　　要：Harmful algal blooms are important threats to reservoir condition.Over a 15-year period,we sampled five Argentinian reservoirs to identify the responsible species for harmful algal blooms and determine the water quality factors driving their occurrence.These reservoirs exhibit diverse morphological and hydrological characteristics and are distributed across varying climatic zones.Cyanobacterial blooms included an array of species,including toxin producers such as Raphidiopsis raciborskii,Aphanizomenon gracile,and Microcystis aeruginosa.In contrast,dinoflagellate blooms were predominantly characterized by Ceratium.The cyanobacterial blooms primarily occurred in the shallower reservoirs located in warmer regions,whereas dinoflagellate blooms occurred where temperatures were lower.The most intense blooms occurred during the summer,and although cyanobacterial and chlorophyte blooms co-occurred,they never coexisted with dinoflagellate blooms.We identified cyanotoxins in the reservoirs over the past three years,a phenomenon previously unreported in the region.Given that these reservoirs are drinking water sources for human populations,ongoing and systematic monitoring is needed to protect public health.Controlling the proliferation of algae and cyanobacteria in reservoirs requires resource management at the watershed level,and in the case of the Itiyuro and El Limon,requires binational management with Bolivia.

关 键 词：HABS FRESHWATER South America TOXINS 

分 类 号：Q948.8[生物学—植物学]