Managing cyanobacterial blooms in recreational waters: decision support tools for public health responses DOI Open Access
Juliette O’Keeffe

Environmental Health Review, Journal Year: 2024, Volume and Issue: 67(3), P. 59 - 68

Published: Sept. 1, 2024

Freshwater blooms of cyanobacteria present a challenge to those tasked with managing beaches during bathing season, both ensure the protection public health, and avoid lengthy beach closures. The combined effects climate change environmental pollution could cause become more frequent, intense, persistent in future some locations, necessitating regularly review update response protocols. Decision support tools are used help manage bloom events inform responses. These can advise on triggers for inspection, testing, posting advisories, closing beaches, when rescind advisories reopen beaches. aim this paper was an overview approaches decision health responses cyanobacterial blooms. During season Canada, most monitoring is reactive, limited coverage proactive monitoring, except at priority Responses vary widely, but many informed by protocols or flow charts using visual inspection single-level indicators, alert level frameworks multiple indicators levels. only health-based any system cyanotoxins, capacity frequent testing often limited. Approaches rescinding also types length time determine it safe resume recreational activities. This from days weeks, jurisdictions taking precautionary approaches. Responsible authorities must balance available resources acceptance extended With prospect pervasive future, there will be need allocate scare efficiently, which may require regular Adapting range accessible alongside local knowledge, site history, new site-specific

Language: Английский

A Review of the Sources, Monitoring, Detection, and Removal of Typical Olfactory Substances Geosmin and 2-Methylisoborneol DOI Open Access
Mingyang Wang,

Yufeng Xu,

Yudong Xie

et al.

Water, Journal Year: 2025, Volume and Issue: 17(8), P. 1236 - 1236

Published: April 21, 2025

As the key sensory indicators for drinking water quality evaluation, odor problems caused by geosmin (GSM) and dimethylisobornyl alcohol (2-MIB) have led to several major supply crises around world. In this paper, theoretical framework of whole process control olfactory substances is systematically constructed through innovative research from multiple perspectives, main contributions are as follows: a comprehensive analysis sources GSM 2-MIB; an summary monitoring methods cyanobacteria elaboration on ways controlling in source; combing substance detection technology, mainly application new sensor technology; in-depth techniques removal; traditional treatment development analyzing advantages disadvantages technology classifying elaborating advanced oxidation processes (AOPs); suggestions future direction each segment.

Language: Английский

Citations

0
Evaluating the growth potential of harmful cyanobacteria in aquatic environments under climate change scenarios DOI Creative Commons
Ariane Guimarães, Pablo Silva, Daniel Paiva Silva

et al.

Acta Limnologica Brasiliensia, Journal Year: 2025, Volume and Issue: 37

Published: Jan. 1, 2025

Abstract: Aim Neotropical freshwater environments face severe threats from climate change, posing significant risks to global water security. Extreme hydrological events, such as torrential rains and prolonged droughts, are expected become more frequent intense. These conditions increase the residence time of nutrients, especially phosphorus nitrogen, favoring proliferation harmful cyanobacteria (cyanoHABs). Furthermore, competitive in with few nutrients high CO2 concentrations. This feature exacerbates ecological public health challenges, these can cause algal blooms that contaminate supplies disrupt aquatic ecosystems. We aimed evaluate growth specific regions concerning prevalence three representative species cyanoHABs. Methods used niche modeling tools (ENMs) based on occurrence records available databases predict distribution most frequently employed different methods: generalized linear models (GLM), Gaussian (GAU), maximum entropy (MXS). Results The potential distributions for current scenario were consistent known modeled cyanoHABs ENMs results. Still, we identified new areas research future scenarios. Conclusions variations observed indicate impacts change vary regionally, affecting fitness cyanobacteria. In short term, they may maintain stable fitness, but a reduction is long term due temperatures. result highlights urgent need mitigating actions protect

Language: Английский

Citations

0
The autotoxicity of dissolved organic matter from Microcystis may be a contributor to the decline of its bloom DOI

Jun Sha,

Lirong Song, Chao Liu

et al.

Water Research, Journal Year: 2024, Volume and Issue: 268, P. 122710 - 122710

Published: Oct. 30, 2024

Language: Английский

Citations

3
Demonstration of Proactive Algaecide Treatments Targeting Overwintering Cyanobacteria in Sediments of an Urban Pond DOI Open Access
Alyssa J. Calomeni, Andrew McQueen, Ciera Kinley-Baird

et al.

Water, Journal Year: 2024, Volume and Issue: 16(11), P. 1624 - 1624

Published: June 6, 2024

Most cyanobacteria that form harmful algal blooms (HABs) in inland waterbodies can overwinter sediments. This field demonstration within an urban pond was conducted to bolster a database on the novel use of algaecide treatments proactively target overwintering located sediments prior HAB formation. In March 2023, peroxide-based applied water feature Kansas City, Kansas, and responses were measured over subsequent weeks months. Multiple lines evidence used discern impacts proactive cells severity throughout growing season. Although results cyanobacterial mixed, three five indicated effective at decreasing transfer column during months when HABs tended occur. Microcystin concentrations immediately post-treatment (hours) remained analytical detection limit (0.10 µg/L) below USEPA risk-based thresholds, highlighting benefits application exponential growth phase toxin-producing cyanobacteria. These expand dataset methodology for field-scale applications targeting sediment mitigate delay development.

Language: Английский

Citations

1
Managing cyanobacterial blooms in recreational waters: decision support tools for public health responses DOI Open Access
Juliette O’Keeffe

Environmental Health Review, Journal Year: 2024, Volume and Issue: 67(3), P. 59 - 68

Published: Sept. 1, 2024

Freshwater blooms of cyanobacteria present a challenge to those tasked with managing beaches during bathing season, both ensure the protection public health, and avoid lengthy beach closures. The combined effects climate change environmental pollution could cause become more frequent, intense, persistent in future some locations, necessitating regularly review update response protocols. Decision support tools are used help manage bloom events inform responses. These can advise on triggers for inspection, testing, posting advisories, closing beaches, when rescind advisories reopen beaches. aim this paper was an overview approaches decision health responses cyanobacterial blooms. During season Canada, most monitoring is reactive, limited coverage proactive monitoring, except at priority Responses vary widely, but many informed by protocols or flow charts using visual inspection single-level indicators, alert level frameworks multiple indicators levels. only health-based any system cyanotoxins, capacity frequent testing often limited. Approaches rescinding also types length time determine it safe resume recreational activities. This from days weeks, jurisdictions taking precautionary approaches. Responsible authorities must balance available resources acceptance extended With prospect pervasive future, there will be need allocate scare efficiently, which may require regular Adapting range accessible alongside local knowledge, site history, new site-specific

Language: Английский

Citations

0