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Comparison of biodiversity and distribution of planktonic diatoms, periphytic and surface sediments in six reservoirs in the southern state of São Paulo.

Grant number: 13/10314-2
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): September 01, 2013
Effective date (End): July 31, 2017
Field of knowledge:Biological Sciences - Ecology - Ecosystems Ecology
Principal researcher:Carlos Eduardo de Mattos Bicudo
Grantee:Gisele Carolina Marquardt
Home Institution: Instituto de Botânica. Secretaria do Meio Ambiente (São Paulo - Estado). São Paulo , SP, Brazil
Associated research grant:09/53898-9 - Paleolimnological reconstruction of Guarapiranga Reservoir and diagnostic of the water and sediment quality of SPMR water supply reservoirs facing their management, AP.TEM


This proposal, first for the region to be studied, aims to assess biodiversity and spatial and temporal organization of diatoms in different compartments (periphytic habitats, planktonic and surface sediments) due to the trophic state in three reservoirs placed in the South Coast basin region (Barra, Jurupará e Cachoeira do França) and three reservoirs in the Alto Paranapanema basin (Pilão D'Água, Itapetininga and Paineiras) in the state of São Paulo. The project aims to integrate information on physical, chemical and biological characteristics of water and recent sediment, provide data on the autoecology of diatoms in tropical reservoirs and contribute to the characterization of the ecological quality of these systems. Therefore, samples of phytoplankton and periphyton (when present) will be collected in two seasons of the year (rainy and dry) and sediment samples will be sampled once because of its depositional character and integrated timescale. Sampling shall be accompanied by physical and chemical analysis of the water (temperature, pH, electrical conductivity, transparency, dissolved oxygen, dissolved inorganic carbon, series N and P, soluble reactive silica, chlorophyll-a) and sediment (NT and PT, total organic carbon and particle size). Diatoms are analyzed qualitatively and quantitatively. The data will be analyzed by means of multivariate statistical analyzes. The proposal will subsidize a larger project, providing information on diatoms' biodiversity and autoecology aiming at the development of a regional database on metropolitan region of Sao Paulo (MRSP) diatoms and future application in transfer function diatom- phosphorus model.

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Scientific publications (7)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
MARQUARDT, GISELE C.; BLANCO, SAUL; BICUDO, CARLOS E. DE M. Is a rare diatom relevant for Brazilian reservoirs?. LIMNETICA, v. 40, n. 1, p. 103-116, 2021. Web of Science Citations: 0.
MARQUARDT, GISELE C.; PADIAL, ANDRE ANDRIAN; BICUDO, CARLOS E. DE M. Variance partitioning of deconstructed tropical diatom communities in reservoirs cascade. AQUATIC SCIENCES, v. 80, n. 2 APR 2018. Web of Science Citations: 1.
GISELE CAROLINA MARQUARDT; CARLOS EDUARDO DE MATTOS BICUDO; THELMA ALVIM VEIGA LUDWIG; LUC ECTOR; CARLOS E. WETZEL. Diatom assemblages (Bacillariophyta) in six tropical reservoirs from southeast Brazil: species composition and spatial and temporal variation patterns. Acta Limnol. Bras., v. 30, p. -, 2018.
MARQUARDT, GISELE C.; BLANCO, SAUL; BICUDO, CARLOS E. DE M. Distance decay as a descriptor of the diatom compositional variation in tropical reservoirs. MARINE AND FRESHWATER RESEARCH, v. 69, n. 1, p. 105-113, 2018. Web of Science Citations: 2.
MARQUARDT, GISELE C.; BICUDO, CARLOS E. DE M.; ECTOR, LUC; WETZEL, CARLOS E. Sellaphora tropicomadida sp nov., a new freshwater diatom species (Bacillariophyta) from a tropical Brazilian reservoir. BRAZILIAN JOURNAL OF BOTANY, v. 40, n. 4, p. 1051-1062, DEC 2017. Web of Science Citations: 2.
MARQUARDT, GISELE C.; COSTA, LIVIA F.; BICUDO, DENISE C.; BICUDO, CARLOS E. DE M.; BLANCO, SAUL; WETZEL, CARLOS E.; ECTOR, LUC. Type analysis of Achnanthidium minutissimum and A. catenatum and description of A. tropicocatenatum sp nov (Bacillariophyta), a common species in Brazilian reservoirs. PLANT ECOLOGY AND EVOLUTION, v. 150, n. 3, p. 313-330, NOV 2017. Web of Science Citations: 6.
MARQUARDT, GISELE C.; WENGRAT, SIMONE; BICUDO, DENISE C.; WETZEL, CARLOS E.; ECTOR, LUC; BICUDO, CARLOS E. DE M. Morphology and distribution of Encyonema angustecapitatum KRAMMER species complex (Bacillariophyceae) with description of four new species from Sao Paulo, southeast Brazil. Fottea, v. 17, n. 2, p. 164-177, 2017. Web of Science Citations: 1.

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