Phytoplankton community interactions and cyanotoxin mixtures in three recurring surface blooms within one lake

Christensen, Victoria G.; Olds, Hayley T.; Norland, Jack E.; Khan, Eakalak

doi:10.1016/j.jhazmat.2021.128142

Cited by 9 publications

(7 citation statements)

References 76 publications

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“…Late summer blooms in Lake Erie occur when the annual TN:TP input from the Maumee River is low and N is limited (Gobler et al, 2016). Cyanobacterial blooms have been studied to better understand communities with regard to abundance of biomass, the composition of species present, and the ability to produce toxins (Christensen et al, 2019(Christensen et al, , 2021(Christensen et al, , 2022Chorus and Welker, 2021). Christensen et al (2022) showed that similar water quality metrics from three spatially separate locations on Kabetogama Lake had differences in phytoplankton communities at the same locations.…”

Section: Discussionmentioning

confidence: 99%

“…Freshwater cyanobacteria produce phycocyanin, and the presence of this pigmented protein can be measured to give an indication of the concentration (i.e., estimate of biomass) of cyanobacteria in a collected water sample. The biomass of cyanobacteria does not have a direct correlation to cyanotoxin production or toxin concentration (Christensen et al, 2019;Christensen et al, 2022). The use of the word biomass in this manuscript is not critically defined but used as a common language word in reference to its relationship with nutrient levels, its use in the description of trophic lake state values, and its use as a possible indicator of elevated PC pigments.…”

Section: Phycocyanin Concentration Using the Cyclops-7 Sensormentioning

confidence: 99%

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Drone-based water sampling and characterization of three freshwater harmful algal blooms in the United States

Hanlon

Jacquemin

Birbeck

et al. 2022

Front. Remote Sens.

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Freshwater harmful algal blooms (HABs), caused mostly by toxic cyanobacteria, produce a range of cyanotoxins that threaten the health of humans and domestic animals. Climate conditions and anthropogenic influences such as agricultural run-off can alter the onset and intensity of HABs. Little is known about the distribution and spread of freshwater HABs. Current sampling protocols in some lakes involve teams of researchers that collect samples by hand from a boat and/or from the shoreline. Water samples can be collected from the surface, from discrete-depth collections, and/or from depth-integrated intervals. These collections are often restricted to certain months of the year, and generally are only performed at a limited number of collection sites. In lakes with active HABs, surface samples are generally sufficient for HAB water quality assessments. We used a unique DrOne Water Sampling SystEm (DOWSE) to collect water samples from the surface of three different HABs in Ohio (Grand Lake St Marys, GLSM and Lake Erie) and Virginia (Lake Anna), United States in 2019. The DOWSE consisted of a 3D-printed sampling device tethered to a drone (uncrewed aerial system, or UAS), and was used to collect surface water samples at different distances (10–100 m) from the shore or from an anchored boat. One hundred and eighty water samples (40 at GLSM, 20 at Lake Erie, and 120 at Lake Anna) were collected and analyzed from 18 drone flights. Our methods included testing for cyanotoxins, phycocyanin, and nutrients from surface water samples. Mean concentrations of microcystins (MCs) in drone water samples were 15.00, 1.92, and 0.02 ppb for GLSM, Lake Erie, and Lake Anna, respectively. Lake Anna had low levels of anatoxin in nearly all (111/120) of the drone water samples. Mean concentrations of phycocyanin in drone water samples were 687, 38, and 62 ppb for GLSM, Lake Erie, and Lake Anna, respectively. High levels of total phosphorus were observed in the drone water samples from GLSM (mean of 0.34 mg/L) and Lake Erie (mean of 0.12 mg/L). Lake Anna had the highest variability of total phosphorus with concentrations that ranged from 0.01 mg/L to 0.21 mg/L, with a mean of 0.06 mg/L. Nitrate levels varied greatly across sites, inverse with bloom biomass, ranging from below detection to 3.64 mg/L, with highest mean values in Lake Erie followed by GLSM and Lake Anna, respectively. Drones offer a rapid, targeted collection of water samples from virtually anywhere on a lake with an active HAB without the need for a boat which can disturb the surrounding water. Drones are, however, limited in their ability to operate during inclement weather such as rain and heavy winds. Collectively, our results highlight numerous opportunities for drone-based water sampling technologies to track, predict, and respond to HABs in the future.

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Section: Discussionmentioning

confidence: 99%

Section: Phycocyanin Concentration Using the Cyclops-7 Sensormentioning

confidence: 99%

Drone-based water sampling and characterization of three freshwater harmful algal blooms in the United States

Hanlon

Jacquemin

Birbeck

et al. 2022

Front. Remote Sens.

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“…Exposure to multiple toxins may be more common than single-toxin exposure [224]. Toxin co-occurrence in U.S. water bodies has been investigated by several researchers, e.g., [206,275]. The literature includes evidence of low co-occurrence from a large nationwide study (0.32 to 5.0% of samples having more than one of four toxins; [29]), with more frequent co-occurrence in some individual lakes (e.g., 84% of samples in two California lakes) [276].…”

Section: Lesser Studied Toxins and Toxin Co-occurrencementioning

confidence: 99%

Toxic Algae in Inland Waters of the Conterminous United States—A Review and Synthesis

Patiño

Christensen

Graham

et al. 2023

Water

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Cyanobacteria are the most common toxigenic algae in inland waters. Their toxins can affect the health of aquatic and terrestrial organisms, including humans. Other algal groups, such as haptophytes (e.g., Prymnesium parvum) and euglenoids (e.g., Euglena sanguinea), can also form harmful algal blooms (HABs) whose toxins cause injury to aquatic biota but currently have no known effects on human health. Prymnesium parvum, however, is responsible for some of the worst HAB-related ecological disasters recorded in inland waters. Here, we provide an overview of the primary toxigenic algae found in U.S. inland waters: cyanobacteria (planktonic forms), P. parvum, and E. sanguinea with the objective of describing their similarities and differences in the areas of HAB ecology, algal toxins, and the potential for future range expansion of HABs. A detailed account of bloom habitats and their known associations with land cover and use is provided from the perspective of water quality. This review revealed that salinity may have an influence on inland cyanobacterial blooms and cyanotoxins that had not been fully recognized previously.

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“…It is known that cyanobacteria are capable of producing different toxins which can be present during the same HABs [73]. It is not clear, however, how the environmental factors regulate the abundance of different MC congeners and isoforms of other toxins in a bloom [39].…”

Section: Microcystins (Mc) Familymentioning

confidence: 99%

Freshwater Cyanobacterial Toxins, Cyanopeptides and Neurodegenerative Diseases

Nugumanova¹,

Ponomarev²,

Askarova³

et al. 2023

Preprint

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Cyanobacteria produce a wide range of structurally diverse cyanotoxins and bioactive cyanopeptides in freshwater, marine, and terrestrial ecosystems. The health significance of these metabolites, which include genotoxic- and neurotoxic agents, is confirmed by continued associations between the occurrence of animal and human acute toxic events and, in the long term, by associations between cyanobacteria and neurodegenerative diseases. One of the implicated mechanisms includes a misincorporation of cyanobacterial non-proteogenic amino acids leading to mistranslation and protein misfolding. A better understanding of the interaction between the cyanopeptide metabolism and the nervous system will be crucial to target or to prevent pathogenic response.

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Phytoplankton community interactions and cyanotoxin mixtures in three recurring surface blooms within one lake

Cited by 9 publications

References 76 publications

Drone-based water sampling and characterization of three freshwater harmful algal blooms in the United States

Drone-based water sampling and characterization of three freshwater harmful algal blooms in the United States

Toxic Algae in Inland Waters of the Conterminous United States—A Review and Synthesis

Freshwater Cyanobacterial Toxins, Cyanopeptides and Neurodegenerative Diseases

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