caa a22 4500 60550931X CHVBK 20210128100640.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s10452-015-9546-z doi (NATIONALLICENCE)springer-10.1007/s10452-015-9546-z Use of functional diversity to assess determinant assembly processes of testate amoebae community [Elektronische Daten] [Rodrigo Arrieira, Leilane Schwind, Claudia Bonecker, Fábio Lansac-Tôha] Functional diversity is among the main components of biodiversity, by quantifying the characteristics of organisms and by investigating which assembly processes prevail in the organisation of communities. The objective of this study was to assess the functional diversity of testate amoebae in floodplains, verifying whether the determinant assembly process of the community is related to environmental filters or the limiting similarity. We tested the hypothesis that the functional diversity of the testate amoebae would be lower than randomly expected in the hydrological periods, influenced by environmental filters. In addition, the functional diversity of the testate amoebae was expected to be strongly influenced by variables related to the productivity of the environments, since the food resources are the most important environmental factors in the assembly of testate amoeba communities. Sampling was carried out quarterly between 2002 and 2011 on the surface of the pelagic zone in six floodplain environments. Results showed that the values were lower than randomly expected according to the functional diversity indices. In addition, the functional diversity was predicted by the environmental variables related to the productivity of the environments according to multiple regression analyses. Our results highlight that functional diversity was mainly influenced by the environmental filters. The limiting similarity and neutral processes could not be totally discarded, and the three mechanisms of community assembly can occur. The environmental filters were linked to productivity and consequently to food resources, which are determinant in the assembly of the testate amoebae community, corroborating our predicted hypothesis. Springer Science+Business Media Dordrecht, 2015 Ecosystem functioning nationallicence Functional traits nationallicence Null model nationallicence Environmental filter nationallicence Protist nationallicence Floodplain nationallicence Arrieira Rodrigo Departamento de Biologia, Nupélia, Universidade Estadual de Maringá, Avenida Colombo, 5790, bloco H-90, Maringá, PR, Brazil aut Schwind Leilane Departamento de Biologia, Nupélia, Universidade Estadual de Maringá, Avenida Colombo, 5790, bloco H-90, Maringá, PR, Brazil aut Bonecker Claudia Departamento de Biologia, Nupélia, Universidade Estadual de Maringá, Avenida Colombo, 5790, bloco H-90, Maringá, PR, Brazil aut Lansac-Tôha Fábio Departamento de Biologia, Nupélia, Universidade Estadual de Maringá, Avenida Colombo, 5790, bloco H-90, Maringá, PR, Brazil aut Aquatic Ecology Springer Netherlands 49/4(2015-12-01), 561-571 1386-2588 49:4<561 2015 49 10452 https://doi.org/10.1007/s10452-015-9546-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10452-015-9546-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Arrieira Rodrigo Departamento de Biologia, Nupélia, Universidade Estadual de Maringá, Avenida Colombo, 5790, bloco H-90, Maringá, PR, Brazil aut NATIONALLICENCE 700 1- Schwind Leilane Departamento de Biologia, Nupélia, Universidade Estadual de Maringá, Avenida Colombo, 5790, bloco H-90, Maringá, PR, Brazil aut NATIONALLICENCE 700 1- Bonecker Claudia Departamento de Biologia, Nupélia, Universidade Estadual de Maringá, Avenida Colombo, 5790, bloco H-90, Maringá, PR, Brazil aut NATIONALLICENCE 700 1- Lansac-Tôha Fábio Departamento de Biologia, Nupélia, Universidade Estadual de Maringá, Avenida Colombo, 5790, bloco H-90, Maringá, PR, Brazil aut NATIONALLICENCE 773 0- Aquatic Ecology Springer Netherlands 49/4(2015-12-01), 561-571 1386-2588 49:4<561 2015 49 10452