First report of the invasive Ceratium furcoides (dinoflagellate) in Paracambi Reservoir, Rio de Janeiro: Risks to the world's largest domestic water treatment plant

Ceratium furcoides (Dinophyta) have gained international attention as invasive aquatic species, especially in South America, due to its fast proliferation into various aquatic systems and the subsequent adverse impacts on water quality and native biota. The present study reports the detection of den...

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Bibliographic Details
Published in:Lakes & Reservoirs : Science, Policy and Management for Sustainable Use Policy and Management for Sustainable Use, 2022-06, Vol.27 (2), p.n/a
Main Authors: Corrêa, Raphael Ferreira, Macêdo, Rafael Lacerda, Fonseca, Kauan Nunes, Thiago, Mariana Guedes Ribeiro, Miranda, Viviane Bernardes dos Santos, Orsi, Mario Luis, Portugal, Samira da Guia Mello, Branco, Christina Wyss Castelo
Format: Article
Language:English
Subjects:
alien species
Aquatic environment
Biota
Bottom sediments
Ceratium furcoides
Collections
Cysts
Dinoflagellates
Domestic water
Fish
freshwater reservoirs
harmful dinoflagellate
Hydroelectric plants
Hydroelectric power
Hydroelectric power plants
hydropower plant
Inland waters
Invasive species
monitoring issues
Phytoplankton
Plankton
Population density
Populations
Proliferation
River basins
Sampling
Sampling methods
Sediments
Surface water
Water purification
Water quality
Water treatment
Water treatment plants
Zooplankton
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Summary:Ceratium furcoides (Dinophyta) have gained international attention as invasive aquatic species, especially in South America, due to its fast proliferation into various aquatic systems and the subsequent adverse impacts on water quality and native biota. The present study reports the detection of dense populations of C. furcoides in the Paracambi Small Hydropower Plant (SHP) located in the Guandu River basin. Sampling was conducted at five sites during two sampling events in 2019 and 2020 during different seasons (spring and summer), respectively. We used two different standardized sampling methods, including surface collections (SS) (100‐ml) traditionally used for quantitative analysis of inland water phytoplankton, as well as filtration of 20‐L sub‐surface water (FS) through a zooplankton net. The cell densities were higher in SS (599 individuals/ml) than in FS (0.068 individuals/ml), possibly indicating a patchy distribution of Ceratium in the surface water layers. The total cell length exhibited high values (mean length of 249‐μm; mean width of 67‐μm), possibly accounting for water treatment impairment, an inability of zooplankton to consume them and/or fish gill clogging. This new observation within an extensively investigated area, and a source of water for nine million people, in the present study advocates for integrated samplings that also consider a search for cysts accumulated in the bottom sediments, as well as more detailed spatial and temporal investigations considering the salient features of C. furcoides’ populations.
ISSN:1320-5331
1440-1770
DOI:10.1111/lre.12400