Cargando…

Main predictors of periphyton species richness depend on adherence strategy and cell size

Periphytic algae are important components of aquatic ecosystems. However, the factors driving periphyton species richness variation remain largely unexplored. Here, we used data from a subtropical floodplain (Upper Paraná River floodplain, Brazil) to quantify the influence of environmental variables...

Descripción completa

Detalles Bibliográficos
Autores principales: Algarte, Vanessa Majewski, Siqueira, Tadeu, Landeiro, Victor Lemes, Rodrigues, Liliana, Bonecker, Claudia Costa, Rodrigues, Luzia Cleide, Santana, Natália Fernanda, Thomaz, Sidinei Magela, Bini, Luis Mauricio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5524394/
https://www.ncbi.nlm.nih.gov/pubmed/28742122
http://dx.doi.org/10.1371/journal.pone.0181720
_version_ 1783252458934370304
author Algarte, Vanessa Majewski
Siqueira, Tadeu
Landeiro, Victor Lemes
Rodrigues, Liliana
Bonecker, Claudia Costa
Rodrigues, Luzia Cleide
Santana, Natália Fernanda
Thomaz, Sidinei Magela
Bini, Luis Mauricio
author_facet Algarte, Vanessa Majewski
Siqueira, Tadeu
Landeiro, Victor Lemes
Rodrigues, Liliana
Bonecker, Claudia Costa
Rodrigues, Luzia Cleide
Santana, Natália Fernanda
Thomaz, Sidinei Magela
Bini, Luis Mauricio
author_sort Algarte, Vanessa Majewski
collection PubMed
description Periphytic algae are important components of aquatic ecosystems. However, the factors driving periphyton species richness variation remain largely unexplored. Here, we used data from a subtropical floodplain (Upper Paraná River floodplain, Brazil) to quantify the influence of environmental variables (total suspended matter, temperature, conductivity, nutrient concentrations, hydrology, phytoplankton biomass, phytoplankton species richness, aquatic macrophyte species richness and zooplankton density) on overall periphytic algal species richness and on the richness of different algal groups defined by morphological traits (cell size and adherence strategy). We expected that the coefficients of determination of the models estimated for different trait-based groups would be higher than the model coefficient of determination of the entire algal community. We also expected that the relative importance of explanatory variables in predicting species richness would differ among algal groups. The coefficient of determination for the model used to predict overall periphytic algal species richness was higher than the ones obtained for models used to predict the species richness of the different groups. Thus, our first prediction was not supported. Species richness of aquatic macrophytes was the main predictor of periphyton species richness of the entire community and a significant predictor of the species richness of small mobile, large mobile and small-loosely attached algae. Abiotic variables, phytoplankton species richness, chlorophyll-a concentration, and hydrology were also significant predictors, depending on the group. These results suggest that habitat heterogeneity (as proxied by aquatic macrophytes richness) is important for maintaining periphyton species richness in floodplain environments. However, other factors played a role, suggesting that the analysis of species richness of different trait-based groups unveils relationships that were not detectable when the entire community was analysed together.
format Online
Article
Text
id pubmed-5524394
institution National Center for Biotechnology Information
language English
publishDate 2017
publisher Public Library of Science
record_format MEDLINE/PubMed
spelling pubmed-55243942017-08-07 Main predictors of periphyton species richness depend on adherence strategy and cell size Algarte, Vanessa Majewski Siqueira, Tadeu Landeiro, Victor Lemes Rodrigues, Liliana Bonecker, Claudia Costa Rodrigues, Luzia Cleide Santana, Natália Fernanda Thomaz, Sidinei Magela Bini, Luis Mauricio PLoS One Research Article Periphytic algae are important components of aquatic ecosystems. However, the factors driving periphyton species richness variation remain largely unexplored. Here, we used data from a subtropical floodplain (Upper Paraná River floodplain, Brazil) to quantify the influence of environmental variables (total suspended matter, temperature, conductivity, nutrient concentrations, hydrology, phytoplankton biomass, phytoplankton species richness, aquatic macrophyte species richness and zooplankton density) on overall periphytic algal species richness and on the richness of different algal groups defined by morphological traits (cell size and adherence strategy). We expected that the coefficients of determination of the models estimated for different trait-based groups would be higher than the model coefficient of determination of the entire algal community. We also expected that the relative importance of explanatory variables in predicting species richness would differ among algal groups. The coefficient of determination for the model used to predict overall periphytic algal species richness was higher than the ones obtained for models used to predict the species richness of the different groups. Thus, our first prediction was not supported. Species richness of aquatic macrophytes was the main predictor of periphyton species richness of the entire community and a significant predictor of the species richness of small mobile, large mobile and small-loosely attached algae. Abiotic variables, phytoplankton species richness, chlorophyll-a concentration, and hydrology were also significant predictors, depending on the group. These results suggest that habitat heterogeneity (as proxied by aquatic macrophytes richness) is important for maintaining periphyton species richness in floodplain environments. However, other factors played a role, suggesting that the analysis of species richness of different trait-based groups unveils relationships that were not detectable when the entire community was analysed together. Public Library of Science 2017-07-24 /pmc/articles/PMC5524394/ /pubmed/28742122 http://dx.doi.org/10.1371/journal.pone.0181720 Text en © 2017 Algarte et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Algarte, Vanessa Majewski
Siqueira, Tadeu
Landeiro, Victor Lemes
Rodrigues, Liliana
Bonecker, Claudia Costa
Rodrigues, Luzia Cleide
Santana, Natália Fernanda
Thomaz, Sidinei Magela
Bini, Luis Mauricio
Main predictors of periphyton species richness depend on adherence strategy and cell size
title Main predictors of periphyton species richness depend on adherence strategy and cell size
title_full Main predictors of periphyton species richness depend on adherence strategy and cell size
title_fullStr Main predictors of periphyton species richness depend on adherence strategy and cell size
title_full_unstemmed Main predictors of periphyton species richness depend on adherence strategy and cell size
title_short Main predictors of periphyton species richness depend on adherence strategy and cell size
title_sort main predictors of periphyton species richness depend on adherence strategy and cell size
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5524394/
https://www.ncbi.nlm.nih.gov/pubmed/28742122
http://dx.doi.org/10.1371/journal.pone.0181720
work_keys_str_mv AT algartevanessamajewski mainpredictorsofperiphytonspeciesrichnessdependonadherencestrategyandcellsize
AT siqueiratadeu mainpredictorsofperiphytonspeciesrichnessdependonadherencestrategyandcellsize
AT landeirovictorlemes mainpredictorsofperiphytonspeciesrichnessdependonadherencestrategyandcellsize
AT rodriguesliliana mainpredictorsofperiphytonspeciesrichnessdependonadherencestrategyandcellsize
AT boneckerclaudiacosta mainpredictorsofperiphytonspeciesrichnessdependonadherencestrategyandcellsize
AT rodriguesluziacleide mainpredictorsofperiphytonspeciesrichnessdependonadherencestrategyandcellsize
AT santananataliafernanda mainpredictorsofperiphytonspeciesrichnessdependonadherencestrategyandcellsize
AT thomazsidineimagela mainpredictorsofperiphytonspeciesrichnessdependonadherencestrategyandcellsize
AT biniluismauricio mainpredictorsofperiphytonspeciesrichnessdependonadherencestrategyandcellsize