15
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Periphytic and planktonic algae records from the upper Paraná river floodplain, Brazil: an update Translated title: Registros de algas perifíticas e planctônicas da planície de inundação do alto rio Paraná, Brasil: uma atualização

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          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.

          Translated abstract

          RESUMO A planície de inundação do alto rio Paraná é uma área estratégica para o patrimônio biológico brasileiro por conter várias unidades de conservação. Objetivamos registrar a ocorrência e a distribuição geográfica das microalgas ocorrentes nesta planície durante 30 anos de pesquisas realizadas na região pelo Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura da Universidade Estadual de Maringá. Foram consultadas 80 publicações (periódicos nacionais e internacionais, e livros publicados desde 1994 até 2016), das quais foram consideradas apenas publicações que referenciam algas no nível genérico e infragenérico. Os resultados indicaram 938 espécies de algas (562 perifíticas e 482 planctônicas), das quais 103 coocorrem nos dois habitats. Cosmarium foi o gênero com maior número de espécies no perifíton e Traquelomonas para o fitoplâncton. Este estudo ampliou o conhecimento da biodiversidade de microalgas no Brasil e forneceu dados para futuros estudos ecológicos e biogeográficos.

          Related collections

          Most cited references42

          • Record: found
          • Abstract: found
          • Article: found
          Is Open Access

          Interannual variability of phytoplankton in the main rivers of the Upper Paraná River floodplain, Brazil: influence of upstream reservoirs

          The interannual variation of phytoplankton communities in the three main rivers of the Upper Paraná River floodplain is evaluated in relation to changes in the hydrosedimentological regime. These changes are a result of climatic variability and the formation of Porto Primavera Reservoir, located at the upper Paraná River. Phytoplankton species richness and density were investigated in rivers during a prior period (1993-1994) and eight years after reservoir impoundment (2000-2007). Multiple analyses were conducted to test the differences between these time periods in order to find predictor variables for phytoplankton attributes. A total of 454 phytoplanktonic taxa were found. The regression analysis revealed significant differences between periods. In the years following construction of the Porto Primavera dam, species richness was lower in the Paraná River and density was higher in the three rivers. In general, the algal density decreased from 2005 to 2007. Diatoms and cyanobacteria contributed significantly to the total density during the period from March 1993 to February 1994. The years 2000-2007 presented the lowest diatom contribution to species richness and the highest cyanobacteria contribution. From 2000 on, cryptomonads and cyanobacteria dominated. The interannual variability of phytoplankton was probably influenced by changes in hydrosedimentological regime due to climatic variations (La Niña and El Niño - Southern Oscillation events - ENSO) and the operational procedures associated with an upstream reservoirs. Studies on climatic variability and its effects on hydrosedimentological regimes of the Paraná, Baía and Ivinhema rivers and the biota therein are necessary to obtain subsidies for management, including decisions related to the operation of dams upstream and downstream of the study area, with the purpose of minimizing risks to the Environmental Protection Area.
            Bookmark
            • Record: found
            • Abstract: found
            • Article: found
            Is Open Access

            Similarity among periphyton algal communities in a lentic-lotic gradient of the upper Paraná river floodplain, Brazil

            Floristic comparison of periphyton communities from three systems with different hydrodynamic regimes (lentic, semilotic, and lotic) was carried out during high and low water periods on the Upper Paraná River floodplain. For each period and system, glass slides were sampled every two days during 18-day periods, and Eichhornia azurea Kunth petioles were sampled three times. A total of 228 species was collected, representing 12 classes, mainly diatoms and desmids. The highest species-richness was found in communities from lentic system and during high water. Species richness in the lotic system was more stable over succession and hydrological periods. Algal taxonomic structure in river community was clearly separated from the other two systems, with 43% of similarity level. The hydrological period was next in importance, followed last by the substratum type, with communities associated at 65-78% similarity levels, depending on system and hydrological period. The type of system, but not the water levels,was the main factor that influenced community richness, followed by disturbances caused by flood pulses and the operation of reservoirs upstream. The periphyton on artificial and natural substrata presented high degree of similarity.
              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Variance partitioning of deconstructed periphyton communities: does the use of biological traits matter?

                Bookmark

                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                hoehnea
                Hoehnea
                Hoehnea
                Instituto de Botânica (São Paulo, SP, Brazil )
                0073-2877
                2236-8906
                December 2018
                : 45
                : 4
                : 560-590
                Affiliations
                [1] Belém Pará orgnameUniversidade Federal do Pará orgdiv1Programa de Pós-graduação em Ecologia Brazil
                [3] Maringá Paraná orgnameUniversidade Estadual de Maringá orgdiv1Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais Brazil
                [2] Maringá Paraná orgnameUniversidade Estadual de Maringá orgdiv1Departamento de Biologia Brazil
                Article
                S2236-89062018000400560
                10.1590/2236-8906-03/2018
                5bbd8fdc-af8a-434c-bb33-3de1b8af0198

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 11 January 2018
                : 02 August 2018
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 49, Pages: 31
                Product

                SciELO Brazil

                Categories
                Articles

                água doce,ficoperifíton,fitoplâncton,microalgas,inventário,freshwater,inventory,microalgae,phycologia,phytoplankton

                Comments

                Comment on this article