Widespread global increase in intense lake phytoplankton blooms since the 1980s

Nature, Journal Year: 2019, Volume and Issue: 574(7780), P. 667 - 670

Published: Oct. 14, 2019

Language: Английский

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The magnitude and drivers of harmful algal blooms in China’s lakes and reservoirs: A national-scale characterization

Water Research, Journal Year: 2020, Volume and Issue: 181, P. 115902 - 115902

Published: May 14, 2020

Language: Английский

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Lakes in Hot Water: The Impacts of a Changing Climate on Aquatic Ecosystems

BioScience, Journal Year: 2022, Volume and Issue: 72(11), P. 1050 - 1061

Published: July 18, 2022

Abstract Our planet is being subjected to unprecedented climate change, with far-reaching social and ecological repercussions. Below the waterline, aquatic ecosystems are affected by multiple climate-related anthropogenic stressors, combined effects of which poorly understood rarely appreciated at global stage. A striking consequence change on that many experiencing shorter periods ice cover, as well earlier longer summer stratified seasons, often result in a cascade environmental consequences, such warmer water temperatures, alterations lake mixing levels, declines dissolved oxygen, increased likelihood cyanobacterial algal blooms, loss habitat for native cold-water fisheries. The repercussions changing include impacts freshwater supplies, quality, biodiversity, ecosystem benefits they provide society.

Language: Английский

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Hot and toxic: Temperature regulates microcystin release from cyanobacteria

The Science of The Total Environment, Journal Year: 2017, Volume and Issue: 610-611, P. 786 - 795

Published: Aug. 18, 2017

Language: Английский

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An analysis of satellite-derived chlorophyll and algal bloom indices on Lake Winnipeg

Journal of Great Lakes Research, Journal Year: 2018, Volume and Issue: 44(3), P. 436 - 446

Published: April 13, 2018

Lake Winnipeg has experienced dramatic increases in nutrient loading and phytoplankton biomass over the last few decades, accompanied by a marked shift community composition towards dominance of cyanobacteria. Comprehensive lake-wide observations algal blooms are critical to assessing lake's health status, its response management practices, an improved understanding processes driving blooms. We present analysis spatial temporal variability on using satellite-derived chlorophyll indices for bloom intensity, extent, severity, duration period ESA's MERIS mission (2002–2011). Imagery documented extensive covering as much 93% lake surface. Bloom conditions were analysed context in-lake watershed gain further insight drivers events. Day day was driven primarily intermittent wind mixing events, with quiescent periods leading formation dense surface Seasonal distribution consistent light limitation south basin circulation transporting material north-east shore. Inter-annual average severity related both total phosphorus (TP) loadings summer temperatures. Results provide valuable historical time series which ongoing from Sentinel-3's OLCI sensor can be added longer term monitoring change detection.

Language: Английский

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The relative importance of water temperature and residence time in predicting cyanobacteria abundance in regulated rivers

Water Research, Journal Year: 2017, Volume and Issue: 124, P. 11 - 19

Published: July 18, 2017

Language: Английский

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Under the radar: long-term perspectives on ecological changes in lakes

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2019, Volume and Issue: 286(1906), P. 20190834 - 20190834

Published: July 10, 2019

Aquatic ecosystems are constantly changing due to natural and anthropogenic stressors. When dealing with such ‘moving targets’, one of the greatest challenges faced by scientists, managers policy makers is use appropriate time scales for environmental assessments. However, most aquatic systems lack monitoring data, if a programme does exist, rarely have data been collected more than few years. Hence, it often difficult or impossible determine nature timing ecosystem changes based on these short-term datasets. Furthermore, as assessments typically performed after problem identified, critical regarding pre-disturbance (or reference) conditions available. Here, I summarize some recent studies employing lake sediment analyses (i.e. palaeolimnology) that provided retrospective emerging slowly innocuously ‘under radar’. My examples include identification legacy effects acid rain logging, namely long-term declines in calcium concentrations softwater lakes, which led significant repercussions services. then show past trajectories aerial pollution from burgeoning oil sands operations western Canada can be tracked using proxies preserved dated cores, how used relative contributions versus industrial sources pollutants. conclude reviewing palaeolimnological linked climate change proliferation harmful blue-green algal (cyanobacterial) blooms, even without addition limiting nutrients. Collectively, effective management, particularly incremental stressors, requires temporal sampling windows not readily available standard monitoring, but supplemented high-resolution analyses.

Language: Английский

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A Mini-Review on Detection Methods of Microcystins

Toxins, Journal Year: 2020, Volume and Issue: 12(10), P. 641 - 641

Published: Oct. 4, 2020

Cyanobacterial harmful algal blooms (CyanoHABs) produce microcystins (MCs) which are associated with animal and human hepatotoxicity. Over 270 variants of MC exist. MCs have been continually studied due their toxic consequences. Monitoring water quality to assess the presence is utmost importance although it often difficult because CyanoHABs may generate multiple variants, low concentration in water. To effectively manage control these toxins prevent health risks, sensitive, fast, reliable methods capable detecting required. This paper aims review three main analytical used detect ranging from biological (mouse bioassay), biochemical (protein phosphatase inhibition assay enzyme linked immunosorbent assay), chemical (high performance liquid chromatography, chromatography-mass spectrometry, high capillary electrophoresis, gas chromatography), as well newly emerging biosensor methods. In addition, current state regarding novel development usage, merits limitations presented. Finally, this also provides recommendations future research directions towards method application improvement.

Language: Английский

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The NSERC Canadian Lake Pulse Network: A national assessment of lake health providing science for water management in a changing climate

The Science of The Total Environment, Journal Year: 2019, Volume and Issue: 695, P. 133668 - 133668

Published: Aug. 4, 2019

The distribution and quality of water resources vary dramatically across Canada, human impacts such as land-use climate changes are exacerbating uncertainties in supply security. At the national level, Canada has no enforceable standards for safe drinking comprehensive water-monitoring program to provide detailed, timely reporting on state resources. To Canada's first assessment lake health, NSERC Canadian Lake Pulse Network was launched 2016 an academic-government research partnership. LakePulse uses traditional approaches limnological monitoring well state-of-the-art methods fields genomics, emerging contaminants, greenhouse gases, invasive pathogens, paleolimnology, spatial modelling, statistical analysis, remote sensing. A coordinated sampling about 680 lakes together with historical archives a geomatics analysis over 80,000 watersheds used examine extent which being altered now future, how this aquatic ecosystem services societal importance. Herein we review network context, objectives methods.

Language: Английский

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A Meta-Analysis on Harmful Algal Bloom (HAB) Detection and Monitoring: A Remote Sensing Perspective

Remote Sensing, Journal Year: 2021, Volume and Issue: 13(21), P. 4347 - 4347

Published: Oct. 28, 2021

Algae serves as a food source for wide range of aquatic species; however, high concentration inorganic nutrients under favorable conditions can result in the development harmful algal blooms (HABs). Many studies have addressed HAB detection and monitoring; no global scale meta-analysis has specifically explored remote sensing-based monitoring. Therefore, this manuscript elucidates visualizes spatiotemporal trends monitoring using sensing methods discusses future insights through 420 journal articles. The results indicate an increase quantity published articles which facilitated analysis sensors, software, proxy estimation methods. comparison across multiple highlighted need standardized reporting method estimation. Research gaps include: (1) atmospheric correction methods, particularly turbid waters, (2) use analytical-based models, (3) application machine learning algorithms, (4) generation harmonized virtual constellation data fusion increased spatial temporal resolutions, (5) cloud-computing platforms large planned hyperspectral satellites will aid filling these to some extent. Overall, review provides snapshot assist decision making studies.

Language: Английский

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