Algae in Recreational Waters DOI Open Access
Federica Valeriani, Federica Carraturo, Giusy Lofrano

et al.

Published: Dec. 27, 2023

Recreational water activities are widely recognized to have a positive impact on our physical and mental well-being. However, recreational sources their management also risk factor for human health, due different agents, including the overgrowth of cyanobacteria algae. These organisms potential metabolize organic matter produce thermophilic thermotolerant toxins. Different species algae participate in biofilm formation maintenance equipment treatment. We reviewed state art by providing basic definitions, taxonomy epidemiological clinical issues related uses waters. Methods treatments monitoring summarized, considering both traditional innovative strategies. Public health surveillance perspectives impose focus detection toxins, biofilms, understanding benthonic planktonic components as part larger microbial biodiversity.

Language: Английский

Impact of tidal fluctuations on bacterial community structure in Wuyuan Bay: A comparative analysis of waters inside and outside the tidal barrage DOI Creative Commons

Dandan Xie,

Feng Chen, Jian Hu

et al.

PLoS ONE, Journal Year: 2024, Volume and Issue: 19(10), P. e0312283 - e0312283

Published: Oct. 25, 2024

The tidal barrage at Wuyuan Bay effectively mitigated the odor from flat during ebb tide, however, its effect on bacterial community structure in waters are still unclear. In this study, high-throughput sequencing was used to analyze of microbial inside and outside flood tides. Results showed diversity higher water tide. dominated species phylum genus levels were various tide (E1) by two cyanobacterial genera, Cyanobium_PCC-6307 (42.90%) Synechococcus_CC9902 (12.56%). function, such as porphyrin chlorophyll metabolism photosynthesis, increased E1. Norank_f__Nitriliruptoraceae identified differential microorganism barrage. Inorganic nitrogen nonionic ammonia significantly high E1, negatively correlated with norank_f__Nitriliruptoraceae. These results suggest blocks exchange, resulting accumulation nutrients Bay. Consequently, environment became favorable for growth cyanobacteria, leading dominance algae posing risk bloom. Higher Nitriliruptoraceae might be a cue change quality.

Language: Английский

Citations

1
Regional and Longitudinal Dynamics of Cyanobacterial Blooms/Cyanobiome and Cyanotoxin Production in the Great Lakes Area DOI Creative Commons

Faizan Saleem,

Jennifer L. Jiang,

Enze Li

et al.

Toxins, Journal Year: 2024, Volume and Issue: 16(11), P. 471 - 471

Published: Nov. 1, 2024

Cyanobacteria (blue-green algae) are a diverse group of prokaryotic microorganisms that impact global biogeochemical cycles. Under eutrophic conditions, cyanobacterial species can produce cyanotoxins, resulting in harmful algal blooms (cHABs) degrade water quality and result economic recreational losses. The Laurentian Great Lakes, key freshwater source, increasingly affected by these blooms. To understand the underlying mechanisms cHAB formation, we investigated microcystin levels, cyanotoxin genes/transcripts, taxonomic/microcystin metabarcoding across three sampling locations Canadian Lakes region, including Hamilton Harbour, Bay Quinte, Three Mile Lake (Muskoka), to observe regional longitudinal dynamics. results revealed positive correlation between occurrence taxonomic/cyanotoxin molecular markers, relative widespread abundance specific dominant taxa,

Language: Английский

Citations

1
Environmental Drivers of Phytoplankton Community Dynamics in an Agriculturally-Influenced Tributary in the Lower Great Lakes DOI
Emily Varga,

Paul Weidman,

Zhuoyan Song

et al.

Published: Jan. 1, 2024

Phytoplankton community composition in tributaries differs from that their receiving waters, due to light limitation suspended particles among other factors such as nutrient availability and temperature. This study was designed manipulate levels early, mid, late summer determine the combined effects of attenuation with naturally varying on phytoplankton an agriculturally-influenced tributary lower Great Lakes. In all trials, situ microcosm experiments show abundance increased under three treatments (60%, 75%, 85% attenuation) relative time-zero, but higher reduced total controls. Highest diversity terms richness evenness occurred September, across trials lowest highest treatments. followed a normal seasonal shift diatoms dominating June, by cyanobacteria mid summer. general, corresponded dominance cyanobacteria. These findings support hypothesis vary promotes buoyant taxa more tolerant low levels.

Language: Английский

Citations

0
Aquatic Bacterial Community Connectivity: The Effect of Hydrological Flow on Community Diversity and Composition DOI Open Access
Javad Sadeghi, Clare J. Venney,

Shelby Wright

et al.

Environments, Journal Year: 2024, Volume and Issue: 11(5), P. 90 - 90

Published: April 28, 2024

Microbial communities are vital components of freshwater ecosystems due to their role in nutrient cycling and energy flow; however, the mechanisms driving variation still being explored. In aquatic systems, water flow (hydrology) can impact microbial community composition through connectivity; details hydrology’s effects on connectivity remain unclear. To address this question, we used 16S rRNA metabarcoding determine bacterial across transects three connected Great Lakes waterbodies with very different water-flow regimes: Little River (high flow), Detroit (moderate Lake Erie (low flow). Bacterial alpha diversity (Chao1) did not differ among locations or sample sites along transects. Analyses beta using dissimilarity matrices identified significant differences within locations. varied locations, a distance–decay relationship observed only low-flow location, which is indicative driven by spatial proximity. Directional analyses showed that direction affected similarity, consistent expected hydrological previous published work. Our results indicate (1) varies even geographically close sampling (2) specific regime appears affect connectivity. Including hydrology models will improve our understanding relative roles selection versus stochastic ecosystems.

Language: Английский

Citations

0
Phytoplankton community response to water physicochemical characteristics under seasonal variation at the Ubol Ratana Dam, Khon Kaen, Thailand DOI

Anchana Somdee,

Weeraput Butsat,

Theerasak Somdee

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: July 17, 2024

Abstract Water eutrophication is a significant environmental issue that impacts aquatic ecosystems worldwide. In this study, we aimed to investigate the relationships among water physicochemical characteristics, phytoplankton community, and cyanotoxins in Ubol Ratana Dam, Khon Kaen, Thailand, during years 2022–2023 evaluate between changes parameters dynamics of community under seasonal variations Dam. A total 84 species belonging 8 phyla were found six different locations reservoir. Cyanobacteria (Cyanophyta) had highest cell density (84.06%), with Microcystis aeruginosa being dominant species. terms seasonality, diversity indices, including Shannon‒Wiener evenness values, summer lowest rainy season, while richness remained constant. Interestingly, was greater at center dam outlet stations than other stations, these two areas also nitrate ammonium concentrations. Canonical correspondence analysis (CCA) explained 66.8%, 70.6%, 63.8% variation rainy, winter, seasons, respectively. This indicates factors influenced growth. Correlation revealed abundance cyanobacteria positively correlated temperature orthophosphate content negatively content. Overall, nitrogen concentration mainly governed cyanobacterial blooms. These results suggest significantly influence phytoplankton, providing valuable insights for future monitoring

Language: Английский

Citations

0
The use of advanced and emerging technologies for adaptive ecosystem-based management of the Great Lakes DOI
Edward M. Verhamme, John F. Bratton, Jay A. Austin

et al.

Aquatic Ecosystem Health & Management, Journal Year: 2024, Volume and Issue: 27(2), P. 96 - 107

Published: April 1, 2024

Abstract The Great Lakes and connecting waters encompass a vast diverse ecosystem that presents scale challenges for management similar to those of the coastal ocean. Technological approaches overcome have primarily been adapted from oceanographic applications technologies, upscaling inland lake methods designed shallower calmer water bodies. Many standard studying habitat biota long lag times between field collection data availability. also miss much dynamics, three-dimensional complexity, spatial variability needed manage system effectively. Even baseline conditions are not well characterized many parts (e.g. bathymetry critical habitat, life cycles food webs, night winter movement activity organisms). Emerging technologies beginning address these needs but require coordination, consistent investment, training, governance linkages. Here we survey recent technological advances show how they contributing improved adaptive by reducing uncertainty increasing understanding physical, biological, chemical processes, human dimensions resource restoration.

Language: Английский

Citations

0
Algae in Recreational Waters DOI Open Access
Federica Valeriani, Federica Carraturo, Giusy Lofrano

et al.

Published: Dec. 27, 2023

Recreational water activities are widely recognized to have a positive impact on our physical and mental well-being. However, recreational sources their management also risk factor for human health, due different agents, including the overgrowth of cyanobacteria algae. These organisms potential metabolize organic matter produce thermophilic thermotolerant toxins. Different species algae participate in biofilm formation maintenance equipment treatment. We reviewed state art by providing basic definitions, taxonomy epidemiological clinical issues related uses waters. Methods treatments monitoring summarized, considering both traditional innovative strategies. Public health surveillance perspectives impose focus detection toxins, biofilms, understanding benthonic planktonic components as part larger microbial biodiversity.

Language: Английский

Citations

1