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Can season interfere with diatom ecological quality assessment?

Elias, Carmen L. ; Vieira, Natividade ; Feio, Maria J. ; Almeida, Salomé F. P.

Hydrobiologia, 2012-10, Vol.695 (1), p.223-232 [Periódico revisado por pares]

Dordrecht: Springer Netherlands

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Título:
Can season interfere with diatom ecological quality assessment?
Autor: Elias, Carmen L. ; Vieira, Natividade ; Feio, Maria J. ; Almeida, Salomé F. P.
Assuntos: Algae ; Algae for Monitoring Rivers ; Animal and plant ecology ; Animal, plant and microbial ecology ; Biological and medical sciences ; Biomedical and Life Sciences ; Cocconeis ; Creeks & streams ; Ecology ; Encyonema ; Fragilaria vaucheriae ; Freshwater & Marine Ecology ; Fundamental and applied biological sciences. Psychology ; General aspects ; Gomphonema parvulum ; Life Sciences ; Nitzschia ; Nitzschia recta ; Plant cytology, morphology, systematics, chorology and evolution ; River ecology ; Rivers ; Seasons ; Synecology ; Thallophyta ; Water quality ; Zoology
É parte de: Hydrobiologia, 2012-10, Vol.695 (1), p.223-232
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: To understand whether seasons influence the ecological quality assessment of streams on the basis of diatoms, a study was undertaken in two lowland water courses located in northwest Portugal, between autumn 2008 and summer 2009. Temporal variation in the chemical pollution of these streams was small as revealed by a number of physical and chemical parameters analyzed. PERMANOVA global test revealed significant variation in water temperature among seasons. The diatom communities also showed a temporal variation although not all the seasons were statistically different. The multidimensional scaling analysis showed that the main differences in the diatom communities were between two groups of seasons: autumn/winter and spring/summer. Species such as Cocconeis pseudolineata , Gomphonema parvulum var. exilissimum , Fragilaria vaucheriae , Encyonema minutum , and Nitzschia recta were more abundant in spring/summer, while species such as Mayamaea atomus and Nitzschia pusilla were more abundant in autumn/winter. The BIOENV routine confirmed that the biological and temperature patterns are highly correlated. Despite the effects observed on diatom communities, these differences were buffered by the EQR (IPS) values which do not reflect seasonal differences. Therefore, the use of the index IPS seems to allow the monitoring of the streams’ ecological quality throughout the year without the interference of the natural temporal variability of diatom communities.
Editor: Dordrecht: Springer Netherlands
Idioma: Inglês

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Can season interfere with diatom ecological quality assessment?

Elias, Carmen L. ; Vieira, Natividade ; Feio, Maria J. ; Almeida, Salomé F. P.

Dordrecht: Springer Netherlands

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