Introduction: Global warming affects air and water temperatures, which impacts the phenology of lakes and aquatic ecosystems. These changes are most noticeable during winter, when the potentially toxic forms its inoculum for annual blooms. Mostly, research has been conducted on alpine lakes, where blooms have persisted for decades, while a few have focused on temperate lakes. Our study aimed to determine the factors influencing the dynamics of the development of in temperate lakes where blooms occasionally occur, with a particular emphasis on the role of ice phenology.
Methods: We investigated the vertical distribution of in an annual cycle in three temperate lakes. Samples were collected monthly in the winter and biweekly during the vegetative seasons. Overall, 434 samples were collected and analyzed according to biological and chemical parameters. Physical parameters were measured .
Results: The vegetation seasons in temperate lakes showed a similar development pattern in the population as that in alpine lakes. Our results also show the influence of physical and chemical factors on the vertical distribution of this cyanobacterium. These results revealed the significant impact of filaments on phytoplankton biodiversity and biomass. Our data show the role of ice phenology in the establishment of the winter inoculum of and its further mass development until its disappearance in autumn.
Conclusion: A climate-zone-independent pattern of blooms was observed during the vegetation periods. The population of was more influenced by physical factors than by the availability of dissolved nutrients in the water. Despite the same etiology, global warming has been shown to cause different responses in aquatic ecosystems, which affect the different nature of appearances. We associated blooms in temperate lakes, in contrast to alpine lakes, mainly with the presence of ice cover during severe winters, when the species establishes its inoculum. Hence, blooms in temperate lakes occur at different time intervals. Therefore, the dynamics of periodic blooms of in temperate lakes provide novel knowledge to the case study and a counterpoint to permanent blooms found in deep alpine lakes.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11233451 | PMC |
| http://dx.doi.org/10.3389/fmicb.2024.1384435 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The influence of thermal and hypoxia induced habitat compression on walleye (Sander vitreus) movements in a temperate lake.
Mov Ecol
January 2025
Great Lakes Laboratory for Fisheries and Aquatic Science, Fisheries and Oceans Canada, 867 Lakeshore Road, Burlington, ON, Canada.
Background: Globally, temperate lakes are experiencing increases in surface water temperatures, extended periods of summer stratification, and decreases of both surface and deep water dissolved oxygen (DO). The distribution of fish is influenced by a variety of factors, but water temperature and dissolved oxygen are known to be particularly constraining such that with climate change, fish will likely feel the "squeeze" from above and below.
Methods: This study used acoustic telemetry to explore the effects of both thermal stratification and the deoxygenation of the hypolimnion on walleye (Sander vitreus) movements in a coastal embayment in Lake Ontario.
Fish reproductive phenology shifts with increasing temperature and year.
Biol Lett
January 2025
Department of Forestry and Natural Resources, Purdue University, Forestry Building, 195 Marsteller Street, West Lafayette, IN 47907, USA.
Temperate fishes often spawn in response to environmental cues, such as temperature, thereby facilitating larval emergence concurrent with suitable biotic and abiotic conditions, such as plankton blooms. Climatic changes may alter the reproductive phenology of spring- and autumn-spawning freshwater fish populations. Such effects may depend on the sensitivity of reproductive phenology to ambient temperatures.
View Article and Find Full Text PDFGeosmin Events Associated with Abundance Promoted by Nitrogen Supply in a Chinese Large Tropical Eutrophic Reservoir.
Microorganisms
December 2024
Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China.
Taste and odor (T/O) compounds are a global threat in drinking water, mainly produced by cyanobacteria in freshwater environments. Temperature plays a crucial role in regulating geosmin dynamics in temperate and subtropical lakes, while its influence may be lower in tropical waters. To better understand the factors affecting geosmin occurrence in tropical waters, a dataset from a field investigation conducted in a large tropical reservoir was analyzed.
View Article and Find Full Text PDFLong-term temporal response of eastern canadian lakes chemistry along a large spatial gradient of atmospheric sulfate deposition.
Environ Pollut
December 2024
Science and Technology Branch, Environment and Climate Change Canada, 105 rue McGill, Montréal, Québec, H2Y 2E7, Canada. Electronic address:
A major consequence of the Industrial Revolution was the acidification of continental water bodies by sulfates (SO) and nitrates deposited over long-range distance from atmospheric emissions. Regulation policies were implemented in the 1980s leading to the general decrease of SO concentrations in freshwaters and progressive recovery from acidification, a complex process that is still ongoing. The surface water SO decrease has been linked to declining calcium (Ca) and increasing dissolved organic carbon (DOC) concentration.
View Article and Find Full Text PDFUse of process-based coupled ecological-hydrodynamic models to support lake water ecosystem service protection planning at the regional scale.
J Contam Hydrol
January 2025
CNR - Water Research Institute, Largo Tonolli 50, 28922 Verbania Pallanza, Italy. Electronic address:
Protection plans of lake waters are based on ecological and/or chemical targets, often simplified in terms of total phosphorus (TP) concentrations, customarily the depth-averaged ones at spring mixing for temperate environments. These target lake TP concentrations are then commonly employed to determine target external loading through reverse use of Vollenweider-OECD-type steady-state empirical models. Such models are also adopted in their direct form to estimate lake TP concentrations following hypothetical external load reductions.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!