Effects of lake warming on the seasonal risk of toxic cyanobacteria exposure

Hayes, Nicole M.; Haig, Heather A.; Simpson, Gavin L.; Leavitt, Peter R.

doi:10.1002/lol2.10164

Cited by 37 publications

(31 citation statements)

References 37 publications

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“…Many of these species produce toxins and were dominant. Besides excessive nutrients, warming is considered a key driver of increased probability of harmful algal blooms and elevated concentrations of microcystin [62,63]. Gkelis et al [64] found that microcystin concentration correlated positively with temperature in a shallow eutrophic lake of Greece.…”

Section: Implications For Limnological Processesmentioning

confidence: 99%

Four Decades of Surface Temperature, Precipitation, and Wind Speed Trends over Lakes of Greece

et al. 2021

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Climate change is known to affect world’s lakes in many ways. Lake warming is perhaps the most prominent impact of climate change but there is evidence that changes of precipitation and wind speed over the surface of the lakes may also have a significant effect on key limnological processes. With this study we explored the interannual trends of surface temperature, precipitation, and wind speed over 18 lakes of Greece using ERA5-Land data spanning over a period of almost four decades. We used generalized additive models (GAMs) to conduct time-series analysis in order to identify significant trends of change. Our results showed that surface temperature has significantly increased in all lakes with an average rate of change for annual temperature of 0.43 °C decade−1. With regard to precipitation, we identified significant trends for most lakes and particularly we found that precipitation decreased during the first two decades (1981–2000), but since 2000 it increased notably. Finally, wind speed did not show any significant change over the examined period with the exception for one lake. In summary, our work highlights the major climatic changes that have occurred in several freshwater bodies of Greece. Thus, it improves our understanding on how climate change may have impacted the ecology of these important ecosystems and may aid us to identify systems that are more vulnerable to future changes.

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Section: Implications For Limnological Processesmentioning

confidence: 99%

Four Decades of Surface Temperature, Precipitation, and Wind Speed Trends over Lakes of Greece

et al. 2021

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“…For most but not all lakes, climate change is recorded as warmer water temperatures (O'Reilly et al 2015). Higher temperatures are linked to increasing algal blooms in general (Ho et al 2019), as well as harmful algal blooms that create toxic water conditions (Hayes et al 2020). Reductions in ice cover have been widely documented, which can affect many aspects of lake ecosystems.…”

Section: Masumi Stadlermentioning

confidence: 99%

Limnology and Oceanography Bulletin Volume 30 Number 2 May 2021 41‐85

2021

Limnology & Oceanogr Bull

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“…Moreover, cyanobacteria could release Microcystin, which could threaten the safety of the drinking water and the health of animals on land and of human beings [6]. The Microcystin concentration in waters has been a critical indicator for evaluating the quality of drinking water by the World Health Organization (WHO), the Environmental Protection Agency (EPA) in the United States, and the EU Water Framework Directive [7].…”

Section: Introductionmentioning

confidence: 99%

Sentinel-2 and Landsat-8 Observations for Harmful Algae Blooms in a Small Eutrophic Lake

Liu

Lei

et al. 2021

Remote Sensing

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Widespread harmful cyanobacterial bloom is one of the most pressing concerns in lakes and reservoirs, resulting in a lot of negative ecological consequences and threatening public health. Ocean color instruments with low spatial resolution have been used to monitor cyanobacterial bloom in large lakes; however, they cannot be applied to small water bodies well. Here, the Multi-Spectral Instrument (MSI) onboard Sentinel-2A and -2B and the Operational Landsat Imager (OLI) onboard Landsat-8 were employed to assemble the virtual constellation and to track spatial and seasonal variations in floating algae blooms from 2016 to 2020 in a small eutrophic plateau lake: Lake Xingyun in China. The floating algae index (FAI) was calculated using Rayleigh-corrected reflectance in the red, near-infrared, and short-wave infrared bands. The MSI-derived FAI had a similar pattern to the OLI-derived FAI, with a mean absolute percentage error of 19.98% and unbiased percentage difference of 17.05%. Then, an FAI threshold, 0.0693, was determined using bimodal histograms of FAI images for floating algae extraction. The floating algae had a higher occurrence in the northern region than the southern region in this lake, whilst the occurrence of floating algae in summer and autumn was higher than that in spring and winter. Such a spatial and seasonal pattern was related to the variability in air temperature, wind speed and direction, and nutrients. The climatological annual mean occurrence of floating algae from 2016 to 2020 in Lake Xingyun exhibited a significant decrease, which was related to decreases in nutrients, resulting from efficient ecological restoration by the local government. This research highlighted the application of OLI-MSI virtual constellation on monitoring floating algae in a small lake, providing a practical and theoretical reference to monitor aquatic environments in small water bodies.

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Effects of lake warming on the seasonal risk of toxic cyanobacteria exposure

Cited by 37 publications

References 37 publications

Four Decades of Surface Temperature, Precipitation, and Wind Speed Trends over Lakes of Greece

Four Decades of Surface Temperature, Precipitation, and Wind Speed Trends over Lakes of Greece

Limnology and Oceanography Bulletin Volume 30 Number 2 May 2021 41‐85

Sentinel-2 and Landsat-8 Observations for Harmful Algae Blooms in a Small Eutrophic Lake

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