Climate Change and Harmful Algal Blooms: Insights and perspective

Harmful Algae, Journal Year: 2019, Volume and Issue: 91, P. 101731 - 101731

Published: Dec. 24, 2019

Climate change is transforming aquatic ecosystems. Coastal waters have experienced progressive warming, acidification, and deoxygenation that will intensify this century. At the same time, there a scientific consensus public health, recreation, tourism, fishery, aquaculture, ecosystem impacts from harmful algal blooms (HABs) all increased over past several decades. The extent to which climate intensifying these HABs not fully clear, but has been wealth of research on topic century alone. Indeed, United Nations' Intergovernmental Panel Change's (IPCC) Special Report Ocean Cryosphere in Changing (SROCC) approved September 2019 was first IPCC report directly link change. In Summary for Policy Makers, made following declarations with "high confidence": addition, specifically outlines series linkages between heat waves HABs. These statements about high levels confidence ascribed them provides clear evidence field matured has, perhaps, reached plateau certainty. While are well-documented global trends being promoted by human activity, including change, individual events driven local, regional, drivers, making it critical carefully evaluate conditions responses at appropriate scales. It within context Issue Change Harmful Algal Blooms published Algae.

Language: Английский

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Harmful algal blooms: A climate change co-stressor in marine and freshwater ecosystems

Harmful Algae, Journal Year: 2019, Volume and Issue: 91, P. 101590 - 101590

Published: May 21, 2019

Marine and freshwater ecosystems are warming, acidifying, deoxygenating as a consequence of climate change. In parallel, the impacts harmful algal blooms (HABs) on these intensifying. Many eutrophic habitats that host recurring HABs already experience thermal extremes, low dissolved oxygen, pH, making locations potential sentinel sites for conditions will become more common in larger-scale systems change accelerates. While studies effects or individual stressors aquatic organisms have been relatively common, assessing their combined rare. Those doing so reported strong species- strain-specific interactions between HAB species co-stressors yielding outcomes could not predicted based investigations factors individually. This review provides an ecological physiological framework considering co-stressor considers consequences occurrence coastal ecosystems. also highlights critical gaps our understanding must be addressed order to develop management plans adequately protect fisheries, aquaculture, ecosystems, human health. Ultimately, incorporating into experiments monitoring programs where multiple considered provide ecologically relevant perspective structure function marine future, climate-altered systems.

Language: Английский

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Future HAB science: Directions and challenges in a changing climate

Harmful Algae, Journal Year: 2019, Volume and Issue: 91, P. 101632 - 101632

Published: Sept. 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

Language: Английский

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A systematic literature review of forecasting and predictive models for cyanobacteria blooms in freshwater lakes

Water Research, Journal Year: 2020, Volume and Issue: 182, P. 115959 - 115959

Published: May 22, 2020

Language: Английский

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Toxic Cyanobacteria: A Growing Threat to Water and Air Quality

Environmental Science & Technology, Journal Year: 2020, Volume and Issue: 55(1), P. 44 - 64

Published: Dec. 18, 2020

The global expansion of harmful cyanobacterial blooms (CyanoHABs) poses an increasing threat to public health. CyanoHABs are characterized by the production toxic metabolites known as cyanotoxins. Human exposure cyanotoxins is challenging forecast, and perhaps least understood route via inhalation. While aerosolization toxins from marine algal (HABs) has been well documented, in freshwater systems remains understudied. In recent years, spray aerosol (SA) produced airshed Laurentian Great Lakes (United States Canada) characterized, suggesting that may impact atmospheric loading more than previously understood. Therefore, further investigation regarding on human respiratory health warranted. This review examines current research incorporation cells into SA aquatic ecosystems which experience HABs. We present overview cyanotoxin fate environment, biological SA, existing data relevant collection methods, adverse outcomes associated with

Language: Английский

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Storm impacts on phytoplankton community dynamics in lakes

Global Change Biology, Journal Year: 2020, Volume and Issue: 26(5), P. 2756 - 2784

Published: March 5, 2020

Abstract In many regions across the globe, extreme weather events such as storms have increased in frequency, intensity, and duration due to climate change. Ecological theory predicts that should large impacts on ecosystem structure function. High winds precipitation associated with can affect lakes via short‐term runoff from watersheds physical mixing of water column. addition, connected rivers streams will also experience flushing high flow rates. Although we a well‐developed understanding how wind alter lake processes some aspects biogeochemical cycling, our mechanistic emergent responses phytoplankton communities is poor. Here provide comprehensive synthesis identifies interact watershed attributes their antecedent conditions generate changes chemical environments. Such restructure dynamics, well result altered ecological function (e.g., carbon, nutrient energy cycling) short‐ long‐term. We summarize current storm‐induced identify knowledge gaps systematic review literature, suggest future research directions gradient types environmental conditions.

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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Mitigating eutrophication and toxic cyanobacterial blooms in large lakes: The evolution of a dual nutrient (N and P) reduction paradigm

Hydrobiologia, Journal Year: 2019, Volume and Issue: 847(21), P. 4359 - 4375

Published: Oct. 29, 2019

Language: Английский

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Cyanobacterial Harmful Algal Blooms in Aquatic Ecosystems: A Comprehensive Outlook on Current and Emerging Mitigation and Control Approaches

Microorganisms, Journal Year: 2021, Volume and Issue: 9(7), P. 1472 - 1472

Published: July 9, 2021

An intensification of toxic cyanobacteria blooms has occurred over the last three decades, severely affecting coastal and lake water quality in many parts world. Extensive research is being conducted an attempt to gain a better understanding driving forces that alter ecological balance bodies biological role secondary metabolites, toxins included, produced by cyanobacteria. In long-term, such knowledge may help develop needed procedures restore phytoplankton community pre-toxic era. short-term, mission scientific novel approaches mitigate thereby ability affected communities enjoy waters. Here, we critically review some recently proposed, currently leading, potentially emerging mitigation in-lake methodologies applications relevant drinking-water treatment.

Language: Английский

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Global divergent trends of algal blooms detected by satellite during 1982–2018

Global Change Biology, Journal Year: 2022, Volume and Issue: 28(7), P. 2327 - 2340

Published: Jan. 7, 2022

Algal blooms (ABs) in inland lakes have caused adverse ecological effects, and health impairment of animals humans. We used archived Landsat images to examine ABs (>1 km2 ) around the globe over a 37-year time span (1982-2018). Out 176032 with area >1 detected globally, 863 were impacted by ABs, 708 had sufficiently long records define trend, 66% exhibited increasing trends frequency ratio (FRQR, number events observed year given lake available for that lake) or (AR, annual maximum covered surface lake), while 34% showed decreasing trend. Across North America, an intensification severity was FRQR (p < .01) AR before 1999, followed decrease .05) after 2000s. The strongest Asia, South Africa, Europe. No clear trend Oceania. climatic zones, contributions anthropogenic factors (16.5% fertilizer, 19.4% gross domestic product, 18.7% population) slightly stronger than drivers (10.1% temperature, 11.7% wind speed, 16.8% pressure, 11.6% rainfall). Collectively, these divergent indicate consideration as well climate change should be at forefront management policies aimed reducing waters.

Language: Английский

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