Differential Impacts of Road De-icers on Freshwater Bacterial Communities DOI Open Access

Troy A. Martin,

Collin L. Juurakko, Tia L. Harrison

и другие.

Water, Год журнала: 2024, Номер 16(3), С. 426 - 426

Опубликована: Янв. 28, 2024

Concern about salt levels in freshwater habitats receiving road de-icer runoff has inspired the development of “eco-friendly” formulations that are intended to be less toxic aquatic organisms, but few experiments have determined these products environmentally benign. Mesocosms containing lake water were established for 6 weeks compare traditional with two newer de-icers, one an inorganic mixture chloride salts and second beet extract brine. Amplicon sequencing algal blocking sequences facilitated identification differentially impacted bacterial taxa. Ironically, although there was only a minor effect on structure at high road-salt concentrations, increased relative abundance salt-resistant genera mixed-salt formulation. After amendment brine de-icer, turnover taxa coincident 68-fold decrease dissolved oxygen, decreased diversity displacement by anaerobic indicating shift across threshold new, apparently stable state, suggesting mesocosm recovery unlikely. Overall, we applaud sentiment behind formulation less-damaging they appear more negative environmental impacts than made replace.

Язык: Английский

The ecosystem implications of road salt as a pollutant of freshwaters DOI Creative Commons
Hilary A. Dugan, Shelley E. Arnott

Wiley Interdisciplinary Reviews Water, Год журнала: 2022, Номер 10(2)

Опубликована: Дек. 19, 2022

Abstract Salt pollution is a threat to freshwater ecosystems. Anthropogenic salt inputs increase lake and stream salinity, consequently change aquatic ecosystem structure function. Elevated concentrations impact species directly not only through osmoregulatory stress, but also community‐level feedbacks that the flow of energy materials food webs. Here, we discuss implications road on rivers lakes how “one size fits all” ecotoxicity thresholds may adequately protect organisms. This article categorized under: Science Water > Quality Life Nature Freshwater Ecosystems Stresses Pressures

Язык: Английский

Процитировано

22
Tradeoffs between elemental homeostasis and growth govern freshwater phytoplankton responses to salinization DOI Creative Commons

S. Dias,

Clay Prater,

Adriana Diaz‐Delgado

и другие.

Limnology and Oceanography, Год журнала: 2025, Номер unknown

Опубликована: Июнь 2, 2025

Abstract Anthropogenic salinization resulting from road salt application can degrade aquatic environments by altering the structure and function of phytoplankton communities, ultimately reducing flows resources through food webs. However, physiological mechanisms underlying taxon‐specific responses to are often poorly linked higher‐order ecosystem dynamics, limiting our ability predict community salinization. To this end, we tested hypotheses derived Subsidy‐Stress Ecological Stoichiometry theory growing two cosmopolitan genera, Dolichospermum (prokaryotic, cyanobacteria) Scenedesmus (eukaryotic, green algae), across NaCl gradients contrasting differences in their growth rates, degree Na homeostasis, cellular C : N P ratios. We found mixed support for subsidy‐stress hypothesis, with only stress observed both species. Instead, declines appeared be stoichiometric tradeoffs between homeostatic regulation, stronger regulation coinciding a greater reduction rates higher variation ratios gradients. Nonhomeostatic allowed sustain which constrain along intracellular storage molecule production. Differences were consistent field observations documenting shifts algae cyanobacteria response freshwater Our results suggest that these could take place below existing North American chronic threshold limits, decreased production at trophic levels biomass inducing nutritional consumers.

Язык: Английский

Процитировано

0
Stream bacterial diversity peaks at intermediate freshwater salinity and varies by salt type DOI Creative Commons
Stephen E. DeVilbiss, Meredith Steele, Bryan L. Brown

и другие.

The Science of The Total Environment, Год журнала: 2022, Номер 840, С. 156690 - 156690

Опубликована: Июнь 14, 2022

Язык: Английский

Процитировано

11
Cyanobacteria can benefit from freshwater salinization following the collapse of dominant phytoplankton competitors and zooplankton herbivores DOI Creative Commons
Pablo Urrutia‐Cordero, Ola Langvall, Gesa A. Weyhenmeyer

и другие.

Freshwater Biology, Год журнала: 2024, Номер 69(12), С. 1748 - 1759

Опубликована: Окт. 22, 2024

Abstract Freshwater salinization is an increasing threat to lakes worldwide, but despite being a widespread issue, little known about its impact on biological communities at the base of food chain. Here we used mesocosm set‐up coupled with modern high‐frequency sensor technology identify short‐ and longer‐term responses phytoplankton in oligotrophic lake. We tested effects over gradient salt concentrations that can be found natural exposed road contamination (added range: from 0 1500 mg Cl − L −1 ). The chlorophyll‐ (chl‐ ) fluorescence measurements showed divergence chl‐ along time, substantially lower higher levels. At sub‐daily scale, profound suppression day–night signal cycles salinity, which could related physiological stress due impairment photosynthesis via photosystem II or potential changes active migration phytoplankton. Community analyses revealed similar decline pattern for total biomass collapse zooplankton biomass. Interestingly, loss diversity compositional re‐organization involving dominant green algae increased salt‐tolerant cyanobacteria. Altogether, these results suggest specific cyanobacterial taxa benefit freshwater following competitors herbivores. also highlight value autonomous capture novel, small‐scale ecological salinization, thereby track fast primary producer communities.

Язык: Английский

Процитировано

2
Variation in urban snow quality indicated by three seasonal sampling surveys conducted in Luleå (Sweden) within a span of 27 years DOI
Abhilash Vijayan, Heléne Österlund, Jiří Maršálek

и другие.

Journal of Contaminant Hydrology, Год журнала: 2023, Номер 260, С. 104286 - 104286

Опубликована: Дек. 22, 2023

Язык: Английский

Процитировано

2
Differential Impacts of Road De-icers on Freshwater Bacterial Communities DOI Open Access

Troy A. Martin,

Collin L. Juurakko, Tia L. Harrison

и другие.

Water, Год журнала: 2024, Номер 16(3), С. 426 - 426

Опубликована: Янв. 28, 2024

Concern about salt levels in freshwater habitats receiving road de-icer runoff has inspired the development of “eco-friendly” formulations that are intended to be less toxic aquatic organisms, but few experiments have determined these products environmentally benign. Mesocosms containing lake water were established for 6 weeks compare traditional with two newer de-icers, one an inorganic mixture chloride salts and second beet extract brine. Amplicon sequencing algal blocking sequences facilitated identification differentially impacted bacterial taxa. Ironically, although there was only a minor effect on structure at high road-salt concentrations, increased relative abundance salt-resistant genera mixed-salt formulation. After amendment brine de-icer, turnover taxa coincident 68-fold decrease dissolved oxygen, decreased diversity displacement by anaerobic indicating shift across threshold new, apparently stable state, suggesting mesocosm recovery unlikely. Overall, we applaud sentiment behind formulation less-damaging they appear more negative environmental impacts than made replace.

Язык: Английский

Процитировано

0