thalassiosirales (diatomeae) do rio guaraguaçu, bacia litorânea, pr, brasil thalassiosirales (diatomeae) of the guaraguaçu river, littoral basin, paraná state, brazil
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ID: 198559
2008
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Abstract
Realizou-se o inventário florístico das diatomáceas pertencentes à ordem Thalassiosirales do rio Guaraguaçu. Amostras planctônicas e perifíticas foram coletadas em seis estações ao longo do leito do rio, considerando um gradiente de salinidade sob influência da maré, rio adentro. A análise qualitativa do material permitiu a identificação de 28 espécies, sendo 19 pertencentes à família Thalassiosiraceae. Do total de táxons determinados registraram-se 85,7% marinhas/estuarinas e 14,3% dulcícolas. Cyclotella atomus Hustedt, C. choctawhatcheeana Prasad, Thalassiocyclus lucens (Hustedt) Hakansson & Mahood, Thalassiosira minima Gaarder, T. prochkinae Makarova, T. pseudonana Hasle & Heimdal, T. tealata Takano, T. tenera Proschkina-Lavrenko e Thalassiosira sp. foram os nove novos registros para o Estado do Paraná. Chaves de identificação, descrições, medidas, ilustrações em microscopia óptica e eletrônica de varredura complementam o estudo.
The floristic inventory of Thalassiosirales from Guaraguaçu 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 & Mahood, Thalassiosira minima Gaarder, T. prochkinae Makarova, T. pseudonana Hasle & Heimdal, T. tealata Takano, T. tenera Proschkina-Lavrenko and Thalassiosira sp. were the nine new records for the State of the Paraná. Identification keys, taxonomic descriptions, measurements, MO and MEV illustrations complement the study.
The floristic inventory of Thalassiosirales from Guaraguaçu 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 & Mahood, Thalassiosira minima Gaarder, T. prochkinae Makarova, T. pseudonana Hasle & Heimdal, T. tealata Takano, T. tenera Proschkina-Lavrenko and Thalassiosira sp. were the nine new records for the State of the Paraná. Identification keys, taxonomic descriptions, measurements, MO and MEV illustrations complement the study.
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| Authors | ;Priscila Izabel Tremarin;Thelma Alvim Veiga Ludwig;Hermes Moreira Filho |
| Journal | monatshefte für chemie chemical monthly |
| Year | 2008 |
| DOI |
10.1590/S0102-33062008000400021
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