科研之友
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摘要
the floristic inventory of thalassiosirales from guaraguaˋu river was based on planktonic and periphytic samples collected at six sampling stations throughout the river, considering a salinity gradient. a total of 28 species were identified with 19 included in thalassiosiraceae family. among the diatoms recorded, 85,7% were marine/estuarine and 14,3% were continental species. cyclotella atomus hustedt, c. choctawhatcheeana prasad, thalassiocyclus lucens (hustedt) hakansson %26 mahood, thalassiosira minima gaarder, t. prochkinae makarova, t. pseudonana hasle %26 heimdal, t. tealata takano, t. tenera proschkina-lavrenko and thalassiosira sp. were the nine new records for the state of the paran芍. identification keys, taxonomic descriptions, measurements, mo and mev illustrations complement the study.
