Type analysis of Cymbella schubartii and two new Encyonopsis species (Bacillariophyceae) from southeastern Brazil

Author(s)

Wengrat, Simone ^[1] ; Marquardt, Gisele C. ^[1] ; Bicudo, Denise C. ^[1] ; Bicudo, Carlos E. De M. ^[1] ; Wetzel, Carlos E. ^[2] ; Ector, Luc ^[2]

Affiliation

^[1] Inst Bot, Dept Ecol, BR-04301012 Sao Paulo, SP - Brazil

^[2] LIST, Environm Res & Innovat ERIN Dept, L-4422 Belvaux - Luxembourg

• Document type: Journal article
• Source: PHYTOTAXA; v. 221, n. 3, p. 247-264, AUG 4 2015.
• Web of Science Citations: 8

Abstract

The type material of Cymbella schubartii was studied in order to clarify the differences and similarities within the complex of Encyonopsis species observed in southeastern Brazilian water bodies. Detailed examination using light and scanning electron microscopy of modern populations led us to propose two new Encyonopsis species, which are here described in details. Morphometric analysis of the valve shape supported the separation of four species: Encyonopsis schubartii, E. difficilis, E. sanctipaulensis, sp. nov. and E. linensis, sp. nov. Additionally, Cymbella perpusilla var. moreirae is formally transferred to the genus Encyonopsis. Regarding their ecological preferences, these species were found in rivers and reservoirs, especially in oligotrophic and oligo-mesotrophic environments. (AU)

• FAPESP's process: 10/14658-0 - The order Cymbellales (Bacillariophyceae) in the State of São Paulo: floristic survey
• Grantee: Gisele Carolina Marquardt
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 12/25366-5 - Shifts in present-day and pre-eutrophic diatom assemblages in reservoirs of different trophic status (Upper Tietê River and surrounding drainage basins)
• Grantee: Simone Wengrat
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 09/03950-4 - Diatoms biodiversity and distribution in the Billings Reservoir, São Paulo (Brazil): influence of habitat and system compartimentalization.
• Grantee: Simone Wengrat
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 09/53898-9 - Paleolimnological reconstruction of Guarapiranga Reservoir and diagnosis of water and sediment current quality of SPMR water supply reservoirs facing their management
• Grantee: Carlos Eduardo de Mattos Bicudo
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 98/04955-3 - Algaflora of the State of São Paulo
• Grantee: Carlos Eduardo de Mattos Bicudo
• Support Opportunities: BIOTA-FAPESP Program - Thematic Grants