Periphytic and planktonic algae records from the upper Paraná river floodplain, Brazil: an update

ABSTRACT The upper Paraná river floodplain is a strategic area for the Brazilian biological and environmental patrimony and contains several conservation units. We aimed to record the occurrence and the geographic distribution of microalgae in this floodplain during 30 years of research carried out by the Center for Research in Limnology, Ichthyology and Aquaculture - State University of Maringá. We consulted 80 publications (national and international journals and books published from 1986 to 2016). We considered only published works that referenced algae at the generic and infrageneric levels. The results indicated 938 species of algae (562 periphytic, 482 planktonic), which 103 co-occur in the two habitats. Cosmarium was the richest genera for periphyton and Traquelomonas for phytoplankton. This study increased the knowledge of microalgae biodiversity in Brazil and provided data for future ecological and biogeographic studies.

摘要 巴拉那河上游泛滥平原是巴西生物与环境遗产的战略要地，境内拥有多处保护单元。本研究依托马林加州立大学湖沼学、鱼类学与水产养殖研究中心长达30年的调研工作，旨在记录该泛滥平原内微藻的发生情况与地理分布。研究共查阅了1986年至2016年间发表的80篇文献（涵盖国内外期刊与专著），仅纳入以藻类属级及亚属级分类单元为研究对象的已发表成果。研究结果共记录藻类938种（其中附生藻类562种、浮游藻类482种），其中103种在两类生境中共存。周丛藻类中以鼓藻属（Cosmarium）物种丰富度最高，浮游植物中则以Traquelomonas属（Traquelomonas）物种丰富度最高。本研究深化了人们对巴西微藻生物多样性的认知，并为后续生态学与生物地理学研究提供了基础数据。