Cyanobacterial blooms

Nature Reviews Microbiology, Год журнала: 2018, Номер 16(8), С. 471 - 483

Опубликована: Июнь 26, 2018

Язык: Английский

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

Nature, Год журнала: 2019, Номер 574(7780), С. 667 - 670

Опубликована: Окт. 14, 2019

Язык: Английский

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The Global Food‐Energy‐Water Nexus

Reviews of Geophysics, Год журнала: 2018, Номер 56(3), С. 456 - 531

Опубликована: Апрель 20, 2018

Abstract Water availability is a major factor constraining humanity's ability to meet the future food and energy needs of growing increasingly affluent human population. plays an important role in production energy, including renewable sources extraction unconventional fossil fuels that are expected become players security. The emergent competition for water between systems recognized concept “food‐energy‐water nexus.” nexus made even more complex by globalization agriculture rapid growth trade, which results massive virtual transfer among regions security some regions. This review explores multiple components food‐energy‐water highlights possible approaches could be used with limited resources planet. Despite clear tensions inherent meeting changing demand 21st century, linkages food, water, can offer opportunity synergistic strategies aimed at resilient security, such as circular economy.

Язык: Английский

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Harmful algae at the complex nexus of eutrophication and climate change

Harmful Algae, Год журнала: 2019, Номер 91, С. 101583 - 101583

Опубликована: Июнь 20, 2019

Climate projections suggest-with substantial certainty-that global warming >1.5 °C will occur by mid-century (2050). Population is also projected to increase, amplifying the demands for food, fuel, water and sanitation, which, in turn, escalate nutrient pollution. Global of pollution, however, are less certain than those climate as there regionally decreasing trends Europe, stabilization use North America Australia. In this review effects eutrophication on harmful algae, some complex, subtle, non-intuitive interactions physiology both non-harmful taxa emphasized. a future ocean, diatoms may be disproportionately stressed mixotrophs advantaged due changing stoichiometry forms nutrients, temperature, stratification oceanic pH. Modeling advancing, but much yet understood, terms physiology, biogeochemistry trophodynamics how nonharmful change an uncertain driven anthropogenic activities.

Язык: Английский

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Future HAB science: Directions and challenges in a changing climate

Harmful Algae, Год журнала: 2019, Номер 91, С. 101632 - 101632

Опубликована: Сен. 30, 2019

There is increasing concern that accelerating environmental change attributed to human-induced warming of the planet may substantially alter patterns, distribution and intensity Harmful Algal Blooms (HABs). Changes in temperature, ocean acidification, precipitation, nutrient stress or availability, physical structure water column all influence productivity, composition, global range phytoplankton assemblages, but large uncertainty remains about how integration these climate drivers might shape future HABs. Presented here are collective deliberations from a symposium on HABs where research challenges understanding potential linkages between were considered, along with new directions better define linkages. In addition likely effects (temperature, salinity, stratification, light, changing storm intensity), chemical (nutrients, acidification), biological (grazer) microalgae (senso lato), participants explored more broadly subjects cyanobacterial HABs, benthic HAB fisheries, modelling challenges, contributions molecular approaches can bring studies. was consensus alongside traditional research, scientists must set courses practices deliver conceptual quantitative advances required forecast trends. These different encompass laboratory field studies, long-term observational programs, retrospectives, as well study socioeconomic aquaculture fisheries. anticipation growing problems, mitigation strategies should be priority. It recommended substantial portion among laboratories directed collectively at small sub-set species questions order fast-track our understanding. Climate-driven changes coastal oceanographic ecological systems becoming substantial, some cases exacerbated by localized human activities. That, combined slow pace decreasing carbon emissions, signals urgency for accelerate efforts across disciplines provide society necessary insights regarding

Язык: Английский

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Perspective: Advancing the research agenda for improving understanding of cyanobacteria in a future of global change

Harmful Algae, Год журнала: 2019, Номер 91, С. 101601 - 101601

Опубликована: Апрель 16, 2019

Язык: Английский

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Blooming algae: a Canadian perspective on the rise of toxic cyanobacteria

Canadian Journal of Fisheries and Aquatic Sciences, Год журнала: 2016, Номер 73(7), С. 1149 - 1158

Опубликована: Апрель 5, 2016

Algal bloom reports are on the rise across Canada. While eutrophication is main driver, other stressors of aquatic ecosystems, specifically climate change and food web alterations from spread invasive species overfishing, compounding factors acting in concert or independently. Current models can predict average algal cyanobacterial biomass concentrations temperate lakes as a function nutrients, but to harmful composition toxicity lacking. At within-lake scale, where management occurs, strong year variations blooms remain challenging explain, let alone predict. The most common cyanotoxins, hepatotoxic microcystins, chemically diverse with some variants more toxic than others greater propensity for persistence bioaccumulation. These differences have been largely overlooked, current guidelines based microcystin-LR, considered variant. Microcystin-LA also encountered Canadian waters appears exhibit With likely increase country, including north, policies cyanotoxins drinking recreational well fish will need be developed protection ecosystem human health. Ultimately, control important option managing blooms; nitrogen phosphorus environmental contaminants, both play role controlling dominance toxigenic cyanobacteria.

Язык: Английский

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Homogenization of lake cyanobacterial communities over a century of climate change and eutrophication

Nature Ecology & Evolution, Год журнала: 2017, Номер 2(2), С. 317 - 324

Опубликована: Дек. 8, 2017

Язык: Английский

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Exploring temperature and precipitation impacts on harmful algal blooms across continental U.S. lakes

Limnology and Oceanography, Год журнала: 2019, Номер 65(5), С. 992 - 1009

Опубликована: Ноя. 20, 2019

Abstract Climate change is expected to impact the severity of harmful algal blooms in lakes and reservoirs through a number mechanisms related influence warming temperatures changes precipitation patterns. Evidence on prevalence individual lacking, however, with knowledge many restricted studies or small subsets lakes. Here, we leverage over twelve hundred summertime lake observations from across continental U.S. explore evidence for hypothesized risks climate attributable specific mechanisms. Using statistical model selection approach, examine associations between temperature variables indicators total phytoplankton abundance, species dominance, toxicity. We find support hypotheses that summer drive length drives cyanobacterial increased may reduce observed toxicity some cases. nutrient concentrations are also likely be impacted by warming, as robustly associated phosphorus concentrations. mixed, there runoff could but reduced greater flushing due precipitation. While not definitive formal mechanistic links, geographic scale results useful identifying widespread U.S., therefore informing understanding change.

Язык: Английский

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Remote sensing of cyanobacterial blooms in inland waters: present knowledge and future challenges

Science Bulletin, Год журнала: 2019, Номер 64(20), С. 1540 - 1556

Опубликована: Июль 2, 2019

Язык: Английский

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