Harmful Algae, Год журнала: 2023, Номер 126, С. 102440 - 102440
Опубликована: Апрель 30, 2023
Язык: Английский
Science Advances, Год журнала: 2023, Номер 9(2)
Опубликована: Янв. 13, 2023
Microcystis, a common harmful algal bloom (HAB) taxon, threatens water supplies and human health, yet species delimitation is contentious in this leading to challenges research management of threat. Historical morphology-based classifications recognize multiple morphospecies, most with variable diverse ecologies, while DNA sequence-based indicate single ecotypes. To better delimit Microcystis species, we conducted pangenome analysis 122 genomes. Core- non-core gene phylogenetic analyses placed 113 genomes into 23 monophyletic clusters containing at least two Overall, genome-related indices revealed that contains 16 putative genospecies. Fifteen genospecies included one aeruginosa 10 or more morphospecies. This classification system will enable consistent taxonomic identification thereby aid resolving some the complexities controversies have long characterized eco-evolutionary important HAB taxon.
Язык: Английский
Процитировано
48
Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Март 26, 2024
Abstract The brief history of monitoring nutrient levels in Chinese lake waters limits our understanding the causes and long-term trends their eutrophication constrains effective management. We therefore synthesize data from lakes China to reveal historical changes project future 2100 using models. Here we show that average concentrations nitrogen phosphorus sediments have increased by 267% 202%, respectively since 1850. In model projections, 2030–2100, studied may decrease, for example, 87% southern districts 19% northern districts. However, will continue increase an 25% Eastern Plain, Yunnan–Guizhou Plateau, Xinjiang. Based on this differentiation, suggest management should be carried out at district level help develop rational sustainable environmental strategies.
Язык: Английский
Процитировано
23
Environmental Microbiology Reports, Год журнала: 2022, Номер 15(1), С. 3 - 12
Опубликована: Сен. 12, 2022
Billions of years ago, the Earth's waters were dominated by cyanobacteria. These microbes amassed to such formidable numbers, they ushered in a new era-starting with Great Oxidation Event-fuelled oxygenic photosynthesis. Throughout following eon, cyanobacteria ceded portions their global aerobic power photoautotrophs rise eukaryotes (i.e. algae and higher plants), which co-existed aquatic ecosystems. Yet while cyanobacteria's ecological success story is one most notorious within our planet's biogeochemical history, scientists this day still seek unlock secrets triumph. Now, Anthropocene has era fuelled excessive nutrient inputs greenhouse gas emissions, are again reshaping biomes. In response, we experiencing an increase cyanobacterial bloom distribution, duration, frequency, leading unbalanced, many instances degraded, A critical component resurgence freshwater-marine continuum: serves transport blooms, toxins produce, on premise that "water flows downhill". Here, identify drivers contributing comeback discuss future implications context environmental human health along continuum. This Minireview addresses overlooked problem freshwater marine continuum effects nutrients toxic blooms moving these waters. Marine research have historically been conducted isolation independently another. Yet, approach fails account for interchangeable transit biology through between systems, phenomenon becoming major around globe. highlights what know challenges lie ahead.
Язык: Английский
Процитировано
41
Limnology and Oceanography Letters, Год журнала: 2022, Номер 8(2), С. 229 - 246
Опубликована: Дек. 8, 2022
Abstract The worldwide proliferation of harmful algal blooms (HABs) both in freshwater and marine ecosystems make understanding predicting their occurrence urgent. Trait‐based approaches, where the focus is on functional traits, have been successful explaining community structure dynamics diverse but not applied extensively to HABs. existing trait compilations suggest that HAB taxa differ from non key traits determine responses major environmental drivers. Multi‐trait comparisons between HAB‐forming other phytoplankton taxa, as well within groups characterize interspecific intraspecific differences will help better define ecological niches different develop trait‐based mechanistic models, identify conditions would likely lead Building databases using them statistical models increase our ability predict occurrence, composition, severity under changing conditions, including anthropogenic global change.
Язык: Английский
Процитировано
39
Nature Water, Год журнала: 2023, Номер 1(10), С. 844 - 854
Опубликована: Окт. 12, 2023
Abstract High concentrations of cyanobacterial toxins such as microcystin represent a global challenge to water quality in lakes, threatening health, economies and ecosystem stability. Lakes are sentinels climate change but how warming will affect is still unclear. Here we examine impacts the probability exceeding thresholds across 2,804 lakes United States show future alter these probabilities. We find that higher temperatures consistently increase likelihood occurrence above highest for between 20 25 °C. Regions with promote shift latitudes coming decades, leading relative changes exceedance probabilities more than 50% many basins States. nitrogen amplify impact rising temperatures, calling increased awareness substantial hazard ecosystems human health under warming.
Язык: Английский
Процитировано
32
The Science of The Total Environment, Год журнала: 2023, Номер 905, С. 167167 - 167167
Опубликована: Сен. 18, 2023
Язык: Английский
Процитировано
28
Harmful Algae, Год журнала: 2023, Номер 127, С. 102466 - 102466
Опубликована: Июнь 2, 2023
Cyanobacteria harmful algal blooms produce many toxic secondary metabolites called cyanotoxins. The most studied group of cyanotoxins are microcystins (MC), with over 300 congeners reported. MC-LR is the congener because its abundance and toxicity. Recent toxicology studies suggest that more hydrophobic MC such as MC-LA, MC-LF, MC-LW may be less abundant but up to seven times than MC-LR, whereas, MC-RR's toxicity only one-fifth MC-LR. Hence, understanding environmental stressors change profile critical assessing negative impact on human health. A two-year field experimental study investigated seasonal spatial changes profiles in western basin Lake Erie. Both showed nitrogen enrichment favored production nitrogen-rich MC-RR (C49H75N13O12). depletion low-nitrogen MC-LA (C46H67N7O12). (a medium N level, C49H75N10O12) accounted for ∼30% 50% total concentration was stable across concentrations. Using relative concentrations each congener, both LC-MS/MS ELISA overestimated early bloom (July) underestimated it late (September). On 24 July 2019, highly MC-LF were detected at nearshore stations exceeding drinking water standards. This demonstrated toxic, high dominated under nitrogen-replete conditions season, whereas nitrogen-limited later season.
Язык: Английский
Процитировано
25
Water Research, Год журнала: 2025, Номер 279, С. 123430 - 123430
Опубликована: Март 3, 2025
Язык: Английский
Процитировано
1
The Science of The Total Environment, Год журнала: 2022, Номер 861, С. 160474 - 160474
Опубликована: Дек. 6, 2022
Язык: Английский
Процитировано
32
The Science of The Total Environment, Год журнала: 2023, Номер 874, С. 162381 - 162381
Опубликована: Март 3, 2023
Язык: Английский
Процитировано
20