Characterization of phytoplankton seed banks in the sediments of a drinking water reservoir

Rolland, Delphine C.M.; Vincent, Warwick F.

doi:10.1080/10402381.2014.950438

Cited by 9 publications

(8 citation statements)

References 35 publications

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“…It is a dimictic lake with anoxic conditions in its deepest waters in late summer [ Rolland et al ., ]. The lake is subject to ongoing eutrophication, and the recent appearance of toxic cyanobacterial blooms is an issue of major public concern [ Rolland and Vincent , ].…”

Section: Introductionmentioning

confidence: 99%

Abiotic control of underwater light in a drinking water reservoir: Photon budget analysis and implications for water quality monitoring

Watanabe

Laurion

Markager

et al. 2015

Water Resources Research

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In optically complex inland waters, the underwater attenuation of photosynthetically active radiation (PAR) is controlled by a variable combination of absorption and scattering components of the lake or river water. Here we applied a photon budget approach to identify the main optical components affecting PAR attenuation in Lake St. Charles, a drinking water reservoir for Quebec City, Canada. This analysis showed the dominant role of colored dissolved organic matter (CDOM) absorption (average of 44% of total absorption during the sampling period), but with large changes over depth in the absolute and relative contribution of the individual absorption components (water, nonalgal particulates, phytoplankton and CDOM) to PAR attenuation. This pronounced vertical variation occurred because of the large spectral changes in the light field with depth, and it strongly affected the average in situ diffuse absorption coefficients in the water column. For example, the diffuse absorption coefficient for pure-water in the ambient light field was 10-fold higher than the value previously measured in the blue open ocean and erroneously applied to lakes and coastal waters. Photon absorption budget calculations for a range of limnological conditions confirmed that phytoplankton had little direct influence on underwater light, even at chlorophyll a values above those observed during harmful algal blooms in the lake. These results imply that traditional measures of water quality such as Secchi depth and radiometric transparency do not provide a meaningful estimate of the biological state of the water column in CDOM-colored lakes and reservoirs.

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Section: Introductionmentioning

confidence: 99%

Abiotic control of underwater light in a drinking water reservoir: Photon budget analysis and implications for water quality monitoring

Watanabe

Laurion

Markager

et al. 2015

Water Resources Research

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“…are limited. Harris and Trimbee (1986) observed a correlation between a decrease in dissolved oxygen (minimum of 0-1 mg O 2 /L) (Calomeni et al, 2022;Rolland & Vincent, 2014; Figure 3).…”

Section: Dissolved Oxygenmentioning

confidence: 91%

Identification of cyanobacteria overwintering cells and environmental conditions causing growth: Application for preventative management

Calomeni‐Eck,

McQueen,

Kinley‐Baird

et al. 2024

Ecol Sol and Evidence

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Harmful algal blooms (HABs) formed by freshwater cyanobacteria pose risks to human and ecological health globally. Some cyanobacteria form overwintering cells that remain in the sediment during non‐ideal growth conditions and provide an inoculum for HABs during the growing season, perpetuating the cyanobacterial life cycle. Preventative management targeted at decreasing the viability of overwintering cells is an attractive strategy for limiting HAB formation and decreasing risks. However, this approach is novel, and information is needed for sampling, identification and enumeration of overwintering cells in sediments as well as methods for determining if overwintering cells have the potential to contribute to HAB formation. Peer reviewed literature related to these topics are available; yet these data need to be synthesized and placed into the context of management. Therefore, a strategic review was conducted to inform methods and data needs for this preventative strategy. To sample overwintering cells, corers or dredges are used to collect surficial (0–2 cm) sediment layers containing overwintering cells. Identification and enumeration of overwintering cells via light microscopy are aided by dilution, sieving, or density separation of cells from sediment. Incubation studies which simulate environmental conditions triggering akinete germination and cell growth provide evidence of overwintering cell viability. Critical environmental conditions are light (≥0.5 μmol m−2 s−1) and temperature (20–30°C) for triggering akinete germination and growth of quiescent vegetative Microcystis sp. cells, respectively. Limited information was available on the roles of mixing and dissolved oxygen as environmental conditions for germination and growth. Synthesized information can be used to identify potential areas of concern in which overwintering cells are contributing to HABs. Additionally, this information can be used to design incubation studies in which field collected sediments containing overwintering cells are placed in ideal environmental conditions for germination and growth and cyanobacteria transferring to the water column are measured over time. These data inform investigations of areas that are candidates for preventative management and measurements of overwintering cell responses to management.

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“…The communities of phytoplankton in sediment exhibited a spatial heterogeneity in our research. The distance from the sample sites to the confluence ranged from about 20 to 50 km, the elevation ranged from about 123 to 140 m, and the water depth in January ranged from 32.13 to 48.73 m. The meteorological conditions, physiochemical conditions, the TN and TP levels, hydrologic conditions, and hydrodynamic conditions were significantly different in different sites [43,48,[50][51][52]. Furthermore, the different photothermal environment, water pressure, and oxygen and speciation of nutrients in water column led to the community variation in sediment along the longitudinal axis.…”

Section: Variations In Phytoplankton Communities In Sedimentmentioning

confidence: 99%

“…The germination and migration of resting cells from sediment to the water column requires not only biomass in sediment but also suitable environmental conditions in the water column. Rolland and Vincent found that species that were not dominant in sediment could develop into dominant species in water blooms as well [50]. The community in seed bank changes due to the impact of influent and effluent water during reservoir discharge.…”

Section: The Factor Influencing Species In Surface Water During Algal Bloomsmentioning

confidence: 99%

Spatio-Temporal Variations in Phytoplankton Communities in Sediment and Surface Water as Reservoir Drawdown—A Case Study of Pengxi River in Three Gorges Reservoir, China

Ouyang

Yang

et al. 2021

Water

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The resting stages of phytoplankton are usually regarded as the seed bank and source of harmful algal blooms because of the recruitment of phytoplankton from sediment to the water column under suitable environmental conditions. Information about resting stages of phytoplankton is abundant in shallow lakes and littoral sea; yet, studies on river–reservoir systems are rare. The river–reservoir continuum shows a unique structuring of longitudinal gradients of hydrological and hydrodynamic conditions. We hypothesized that the seed bank and algal blooms in reservoirs are influenced by the hydrodynamic conditions of each reservoir. We used Illumina Miseq sequencing to examine the spatio-temporal variation in the phytoplankton community in the sediment as reservoir drawdown and in surface water during algal blooms in Pengxi River, a tributary of China’s Three Gorges Reservoir. The results show that the cyanobacteria community in sediment is significantly influenced by temperature, total carbon, maximum flow velocity, and total phosphorous, the eukaryotic phytoplankton community in sediment is significantly influenced by total phosphorous, temperature, total carbon, maximum flow velocity, and total nitrogen. Additionally, the dominant species in sediment is significantly different from that in surface water during algal blooms. Our results suggest that the dominant species in surface water during algal blooms is more influenced by the environmental factors and hydrodynamic conditions in the water column than the seeds in the sediment. These findings are fundamental for further research on the influence of hydrodynamic conditions on algal blooms in artificially regulated river-reservoir systems.

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Characterization of phytoplankton seed banks in the sediments of a drinking water reservoir

Cited by 9 publications

References 35 publications

Abiotic control of underwater light in a drinking water reservoir: Photon budget analysis and implications for water quality monitoring

Abiotic control of underwater light in a drinking water reservoir: Photon budget analysis and implications for water quality monitoring

Identification of cyanobacteria overwintering cells and environmental conditions causing growth: Application for preventative management

Spatio-Temporal Variations in Phytoplankton Communities in Sediment and Surface Water as Reservoir Drawdown—A Case Study of Pengxi River in Three Gorges Reservoir, China

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