Study of testacean assemblages (Protozoa: Rhizopoda) in touristic waterfall regions of Chapada dos Guimar es National Park, Mato Grosso State, Brazil = Estudo das assembl谷ias de Test芍ceas (Protozoa 每 Rhizopoda) em regi es encachoeiradas tur赤sticas do Parque Nacional Chapada dos Guimar es, Estado do Mato Grosso, Brasil

作者：Marcia Teixeira de Oliveira; Edna Lopes Hardoim

来源：Acta Scientiarum - Biological Sciences, 2010.

• Testacean
• protozoa
• rhizopoda
• waterfall regions
• Testacea
• regi es encachoeiradas

An evaluation was made of the effect of temporal variations on an assembly of Testaceae in several water bodies located in Chapada dos Guimar es National Park. A sampling point was selected at each study site, where 4 samplings were collected per season, consideringthe climatic conditions of the dry and rainy periods. The findings revealed 80 infrageneric taxa, 05 families and 12 genera. Pearson＊s correlation between the second axis of the DCA and the first axis of the PCA was significant, even after applying Bonferroni＊s correction for multiple significance tests (r = 0.683; p = 0.014). Thus, the temporal variation of the limnological data, which showed higher values of turbidity, total solids, color and temperature for the rainy period and higher concentrations of nitrogen and phosphorus during the dry season, was significantly correlated with the biotic data. The second axis of the PCA indicated that the variables remainedunchanged during the seasonal periods under study. O presente trabalho objetivou avaliar os efeitos da varia o temporal sobre assembleia de Test芍ceas de alguns corpos d＊芍gua localizados no Parque Nacional da Chapada dos Guimar es. Elegeu-se, em cada esta o de estudo, um ponto amostral e realizaram-se quatro amostragens/esta o, considerando-se as condi es clim芍ticas do per赤odo de estiagem e chuvoso. Os resultados obtidos evidenciaram 80 t芍xons infragen谷ricos, cinco fam赤lias e 12 g那neros. A correla o de Pearson entre o segundo eixo da DCA e o primeiro eixo da PCA foi significativa, mesmo ap車s a corre o de Bonferroni para m迆ltiplos testes de significancia (r = 0,683; p = 0,014). Deste modo, a varia o temporal dos dados limnol車gicos, que evidenciou maioresvalores de turbidez, s車lidos totais, cor e temperatura para o per赤odo chuvoso, e maiores concentra es de nitrog那nio e f車sforo na estiagem, correlacionou-se significativamente com os dados bi車ticos. O segundo eixo da PCA evidenciou que as vari芍veis n o variaram durante osper赤odos sazonais estudados.