Microalgae-Based Biotechnology as Alternative Biofertilizers for Soil Enhancement and Carbon Footprint Reduction: Advantages and Implications

Marine Drugs, Journal Year: 2023, Volume and Issue: 21(2), P. 93 - 93

Published: Jan. 28, 2023

Due to the constant growth of human population and anthropological activity, it has become necessary use sustainable affordable technologies that satisfy current future demand for agricultural products. Since nutrients available plants in soil are limited need increase yields crops is desirable, chemical (inorganic or NPK) fertilizers been widespread over last decades, causing a nutrient shortage due their misuse exploitation, because uncontrolled these products, there latent environmental health problem globally. For this reason, green biotechnology based on microalgae biomass proposed as alternative development improvers crop cultivation phytoremediation. This review explores long-term risks using both (cancer hypoxia) environment (eutrophication erosion), well potential substitute fertilizer different treatments application methods implementation soil; additionally, can be source carbon mitigation wastewater treatment agro-industrial processes.

Language: Английский

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Harmful cyanobacteria-diatom/dinoflagellate blooms and their cyanotoxins in freshwaters: A nonnegligible chronic health and ecological hazard

Water Research, Journal Year: 2023, Volume and Issue: 233, P. 119807 - 119807

Published: Feb. 25, 2023

Language: Английский

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Interactions between nitrogen form, loading rate, and light intensity on Microcystis and Planktothrix growth and microcystin production

Harmful Algae, Journal Year: 2018, Volume and Issue: 73, P. 84 - 97

Published: Feb. 7, 2018

Language: Английский

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Reduced forms of nitrogen are a driver of non-nitrogen-fixing harmful cyanobacterial blooms and toxicity in Lake Erie

Harmful Algae, Journal Year: 2019, Volume and Issue: 81, P. 86 - 93

Published: Jan. 1, 2019

Language: Английский

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Scaling Up From Regional Case Studies to a Global Harmful Algal Bloom Observing System

Frontiers in Marine Science, Journal Year: 2019, Volume and Issue: 6

Published: May 22, 2019

Harmful algal blooms (HABs) produce local impacts in nearly all freshwater and marine systems. They are a global problem that require integrated coordinated scientific understanding leading to regional responses solutions. Given these natural phenomena will never be completely eliminated, improved of HAB dynamics coupled with monitoring ocean observations facilitates new prediction prevention strategies. Regional efforts underway worldwide create state-of-the-art forecasting tools, vulnerability assessments, observing networks. In the United States, include Alaska, Pacific Northwest, California, Gulf Mexico, Maine, Great Lakes, U.S. Caribbean islands. This paper examines several programs European Union, Asia concludes there is no one-size-fits-all approach. At same time, successful strong coordination stakeholders institutional sustainability maintain reinforce them automating technologies, wherever possible, ensure integration modelling multiple national programs. Recommendations for scaling up system HABs can summarized as follows: 1) advance improve cost-effective sustainable forecast systems address HAB-risk warning requirements key end-users at levels; 2) design leverage expand evaluate emerging technologies Essential Ocean Variables (EOVs) Biodiversity (EBVs) order support interregional technology comparisons networks capabilities; 3) fill essential need sustained, preferably automated, near real-time information from nearshore offshore sites situated transport pathways provide improved, advanced warnings; 4) merge ecological knowledge models existing Earth System Modelling Frameworks enhance end-to-end capabilities scenario-building; 5) seasonal decadal forecasts allow governments plan, adapt changing environment, coastal industries supported sustained years ahead; 6) implementation recent calls action by Nations Decade 2010 Sustainable Development Goals (SDGs) develop indicators relevant an effective early system.

Language: Английский

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Harmful Algal Bloom Toxins in Aerosol Generated from Inland Lake Water

Environmental Science & Technology, Journal Year: 2020, Volume and Issue: 54(8), P. 4769 - 4780

Published: March 18, 2020

Harmful algal blooms (HABs) caused by cyanobacteria in freshwater environments produce toxins (e.g., microcystin) that are harmful to human and animal health. HAB frequency intensity increasing with greater nutrient runoff a warming climate. Lake spray aerosol (LSA) released from lakes has been identified on lakeshores after transport inland, including HABs, but little is known about the potential for be incorporated into LSA. In this study, samples were collected two Michigan: Mona during severe microcystin concentrations (>200 μg/L) well above Environmental Protection Agency (EPA) recommended “do not drink” level (1.6 Muskegon without (<1 μg/L microcystin). Microcystin freshwater, as particles generated laboratory water liquid chromatography–tandem mass spectrometry (LC–MS/MS) at atmospheric up 50 ± 20 ng/m3. Enrichment of hydrophobic congeners microcystin-LR) was observed relative bulk while enrichment hydrophilic microcystin-RR) lower. As HABs increase climate, understanding quantifying emissions atmosphere crucial evaluating health consequences HABs.

Language: Английский

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Nitrification and ammonium dynamics in Taihu Lake, China: seasonal competition for ammonium between nitrifiers and cyanobacteria

Biogeosciences, Journal Year: 2018, Volume and Issue: 15(3), P. 733 - 748

Published: Feb. 6, 2018

Abstract. Taihu Lake is hypereutrophic and experiences seasonal, cyanobacterial harmful algal blooms. These Microcystis blooms produce microcystin, a potent liver toxin, are linked to anthropogenic nitrogen (N) phosphorus (P) loads lakes. spp. cannot fix atmospheric N must compete with ammonia-oxidizing other organisms for ammonium (NH4+). We measured NH4+ regeneration potential uptake rates total nitrification using stable-isotope techniques. Nitrification studies included abundance of the functional gene oxidation, amoA, archaea (AOA) bacteria (AOB). Potential ranged from 0.02 6.80 µmol L−1 h−1 in light 0.05 3.33 dark, 0.03 2.37 h−1. exceeded previously reported most freshwater systems. Total often 200 nmol d−1 was > 1000 at one station near river discharge. AOA amoA copies were more abundant than AOB (p < 0.005) all times; however, only (not AOA) correlated stations seasons 0.005). varied seasonally; stations, highest March, lower June, lowest July, corresponding bloom progression, suggesting that nitrifiers poor competitors during bloom. Regeneration results suggested cyanobacteria relied extensively on regenerated sustain Internal external loading lake by factor 2 but ultimately fueled loads. Our thus support growing literature calling watershed reductions concert existing management P

Language: Английский

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Urea Is Both a Carbon and Nitrogen Source for Microcystis aeruginosa: Tracking 13C Incorporation at Bloom pH Conditions

Frontiers in Microbiology, Journal Year: 2019, Volume and Issue: 10

Published: May 17, 2019

The use of urea as a nitrogenous (N) fertilizer has increased over the past two decades, with itself being readily detected at high concentrations in many lakes. Urea been linked to cyanobacterial blooms it is assimilated N-source for cyanobacteria that possess enzyme urease. We tested hypothesis may also act carbon (C) source supplemental growth requirements during alkaline conditions created by dense blooms, when dissolved CO2 are vanishingly low. High rates photosynthesis markedly reduce and drive up pH. This was observed Lake Erie largest bloom on record (2015) long periods (months) short (days) time, suggesting experience C limitation seasonal daily basis. used 13C-urea demonstrate axenic cultures model toxic cyanobacterium, Microcystis aeruginosa NIES843, varying environmentally relevant pH directly into spectrum metabolic pools hydrolysis. Primarily, 13C from central metabolism amino acid biosynthesis pathways, including those important production hepatotoxin, microcystin, incorporation these pathways higher percent corresponded sole N increasing propose this ability incorporate represents yet another competitive advantage cyanobacterium algal blooms.

Language: Английский

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Protecting local water quality has global benefits

Nature Communications, Journal Year: 2021, Volume and Issue: 12(1)

Published: May 11, 2021

Abstract Surface water is among Earth’s most important resources. Yet, benefit–cost studies often report that the costs of quality protection exceed its benefits. One possible reason for this seeming paradox only a narrow range local benefits are considered. In particular, climate damages from pollution have rarely been quantified. Recent advances in global science allow computation methane emission lakes caused by human nutrient enrichment (eutrophication). Here, we estimate present value social cost eutrophication-driven emissions between 2015 and 2050 to be $7.5–$81 trillion (2015 $US), case-study one well-studied lake (Lake Erie) find avoiding eutrophication exceeds values either beach use or sport fishing 10-fold.

Language: Английский

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The genetic and ecophysiological diversity of Microcystis

Environmental Microbiology, Journal Year: 2021, Volume and Issue: 23(12), P. 7278 - 7313

Published: May 31, 2021

Summary Microcystis is a cyanobacterium that forms toxic blooms in freshwater ecosystems around the world. Biological variation among taxa within genus apparent through genetic and phenotypic differences between strains via spatial temporal distribution of environment, this fine‐scale diversity exerts strong influence over bloom toxicity. Yet we do not know how varying traits govern their environmental distribution, tradeoffs links these traits, or they are encoded at genomic level. Here synthesize current knowledge on importance genes likely underpin ecological differentiation taxa. We briefly review patterns field evidence for cohesive groups . then compile data strain‐level regarding growth responses to conditions explore community interactions across strains. Potential identified discussed. The resulting picture, while incomplete, highlights key gaps need be filled enable new models predicting dynamics, which development, toxicity cosmopolitan nature blooms.

Language: Английский

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