Phytoplankton richness and abundance in response to seasonality and spatiality in a tropical reservoir
Abstract: Aim Species richness and abundance are important elements in understanding communities’ dynamics. In this way we evaluated the spatial and temporal variation of phytoplankton richness and density in a tropical reservoir, and its main drivers. We tested whether the temporal variability of the hydrological cycle influences the phytoplankton, in addition to testing the main environmental variables that influence richness and density. Methods Data from environmental variables and phytoplankton were sampled in different regions of João Leite reservoir, Goiás, Brazil, during a dry and rainy period, and were analyzed by Principal Component Analysis, Student's t-test and Bioenv. Results We recorded distinct environmental scenarios between the dry and rainy period, with temporal differences in richness. Sixty-two taxa were recorded, with cyanobacterial predominance in both hydrological periods and in the lentic reservoir regions. Water temperature, pH, electrical conductivity, dissolved oxygen, turbidity, and nutrient concentrations were the main drivers of phytoplankton richness and density in our study. Conclusions The richness and abundance of species directly reflect the determining factors in the structure of communities, generating important information about ecosystem functions. Therefore, understanding the environmental variability on phytoplankton richness and abundance in tropical reservoirs is essential, since the construction of reservoirs influences aquatic biodiversity and the provision of ecosystem services.
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Associação Brasileira de Limnologia
2021
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oai:scielo:S2179-975X20210001007092021-06-02Phytoplankton richness and abundance in response to seasonality and spatiality in a tropical reservoirMoura,Lyza Christine dos SantosSantos,Silvia Moreira dosSouza,Cláudia Alves deSantos,Carlos Roberto Alves dosBortolini,Jascieli Carla Brazil dam diversity impoundment planktonic algae Abstract: Aim Species richness and abundance are important elements in understanding communities’ dynamics. In this way we evaluated the spatial and temporal variation of phytoplankton richness and density in a tropical reservoir, and its main drivers. We tested whether the temporal variability of the hydrological cycle influences the phytoplankton, in addition to testing the main environmental variables that influence richness and density. Methods Data from environmental variables and phytoplankton were sampled in different regions of João Leite reservoir, Goiás, Brazil, during a dry and rainy period, and were analyzed by Principal Component Analysis, Student's t-test and Bioenv. Results We recorded distinct environmental scenarios between the dry and rainy period, with temporal differences in richness. Sixty-two taxa were recorded, with cyanobacterial predominance in both hydrological periods and in the lentic reservoir regions. Water temperature, pH, electrical conductivity, dissolved oxygen, turbidity, and nutrient concentrations were the main drivers of phytoplankton richness and density in our study. Conclusions The richness and abundance of species directly reflect the determining factors in the structure of communities, generating important information about ecosystem functions. Therefore, understanding the environmental variability on phytoplankton richness and abundance in tropical reservoirs is essential, since the construction of reservoirs influences aquatic biodiversity and the provision of ecosystem services.info:eu-repo/semantics/openAccessAssociação Brasileira de LimnologiaActa Limnologica Brasiliensia v.33 20212021-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2021000100709en10.1590/s2179-975x11419 |
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Moura,Lyza Christine dos Santos Santos,Silvia Moreira dos Souza,Cláudia Alves de Santos,Carlos Roberto Alves dos Bortolini,Jascieli Carla |
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Moura,Lyza Christine dos Santos Santos,Silvia Moreira dos Souza,Cláudia Alves de Santos,Carlos Roberto Alves dos Bortolini,Jascieli Carla Phytoplankton richness and abundance in response to seasonality and spatiality in a tropical reservoir |
author_facet |
Moura,Lyza Christine dos Santos Santos,Silvia Moreira dos Souza,Cláudia Alves de Santos,Carlos Roberto Alves dos Bortolini,Jascieli Carla |
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Moura,Lyza Christine dos Santos |
title |
Phytoplankton richness and abundance in response to seasonality and spatiality in a tropical reservoir |
title_short |
Phytoplankton richness and abundance in response to seasonality and spatiality in a tropical reservoir |
title_full |
Phytoplankton richness and abundance in response to seasonality and spatiality in a tropical reservoir |
title_fullStr |
Phytoplankton richness and abundance in response to seasonality and spatiality in a tropical reservoir |
title_full_unstemmed |
Phytoplankton richness and abundance in response to seasonality and spatiality in a tropical reservoir |
title_sort |
phytoplankton richness and abundance in response to seasonality and spatiality in a tropical reservoir |
description |
Abstract: Aim Species richness and abundance are important elements in understanding communities’ dynamics. In this way we evaluated the spatial and temporal variation of phytoplankton richness and density in a tropical reservoir, and its main drivers. We tested whether the temporal variability of the hydrological cycle influences the phytoplankton, in addition to testing the main environmental variables that influence richness and density. Methods Data from environmental variables and phytoplankton were sampled in different regions of João Leite reservoir, Goiás, Brazil, during a dry and rainy period, and were analyzed by Principal Component Analysis, Student's t-test and Bioenv. Results We recorded distinct environmental scenarios between the dry and rainy period, with temporal differences in richness. Sixty-two taxa were recorded, with cyanobacterial predominance in both hydrological periods and in the lentic reservoir regions. Water temperature, pH, electrical conductivity, dissolved oxygen, turbidity, and nutrient concentrations were the main drivers of phytoplankton richness and density in our study. Conclusions The richness and abundance of species directly reflect the determining factors in the structure of communities, generating important information about ecosystem functions. Therefore, understanding the environmental variability on phytoplankton richness and abundance in tropical reservoirs is essential, since the construction of reservoirs influences aquatic biodiversity and the provision of ecosystem services. |
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Associação Brasileira de Limnologia |
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2021 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2021000100709 |
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