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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Biomass and elemental composition (C, N, H) of the periphytic community attached to Polygonum punctatum Ell. in a subtropical reservoir and its relationship to environmental factors

Author(s):
Taniwaki, Ricardo Hideo [1] ; Emilio Magrin, Albano Geraldo [2] ; Calijuri, Maria do Carmo [3] ; Carlos, Viviane Moschini [4]
Total Authors: 4
Affiliation:
[1] UNESP. Univ Estadual Paulista Julio Mesquita Filho
[2] UFSCar Univ Fed Sao Carlos. BR-18052780 Sorocaba
[3] Univ Sao Paulo. Escola Engn Sao Carlos
[4] UNESP. Univ Estadual Paulista Julio Mesquita Filho
Total Affiliations: 4
Document type: Journal article
Source: LIMNETICA; v. 32, n. 2, p. 189-199, DEC 2013.
Web of Science Citations: 0
Abstract

The periphytic communities in Brazilian reservoirs have been studied widely due to their importance for the assimilation of nutrients and their role at the base of the food chain. The objective of the present work was to analyse the environmental variables that influence the development of periphytic communities attached to stalks of the aquatic macrophyte Polygonum punctatum Ell. Five sample collections were made during 2010 at two sites in the Itupararanga reservoir (Ibiua, Sao Paulo, Brazil). The macrophyte was collected, and the periphytic community attached to its stalks was scraped off with a brush and jets of distilled water. Using a PLS analysis, we observed that 94.3% of the variation in periphyton biomass could be explained by concentrations of nitrate, conductivity, dissolved oxygen, water clarity and dissolved inorganic phosphorous. According to the indices applied, in 2010 the biomass of the periphytic community in the reservoir was low and predominantly heterotrophic, and the concentration of carbon in the periphyton was lower than that found in previous studies of this community. (AU)

FAPESP's process: 08/55636-9 - Contribution to carbon cycle in Itupararanga reservoir as subsidy for sustainability in Sorocaba watershed, São Paulo, Brazil
Grantee:Maria do Carmo Calijuri
Support Opportunities: Research Projects - Thematic Grants