Phytoplankton Composition and Biomass in the Offshore Waters of Lake Erie: Pre- and Post-Dreissena Introduction (1983–1993)

Makarewicz, Joseph C.; Lewis, Theodore W.; Bertram, Paul

doi:10.1016/s0380-1330(99)70722-7

Cited by 104 publications

(65 citation statements)

References 30 publications

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“…There can be little doubt that the introduction of large numbers of suspension feeders into Lake Erie has affected the water quality (Makarewicz et al 1999(Makarewicz et al , 2000Nicholls et al 1999). However, several factors may have contributed to the conventional wisdom that zebra mussels are the only possible explanation for the clarification of Lake Erie.…”

Section: Discussionmentioning

confidence: 99%

Benthic‐Pelagic coupling over a zebra mussel reef in western Lake Erie

Ackerman¹,

Loewen²,

Hamblin³

2001

Limnology & Oceanography

139

120

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We conducted a field study including a series of cruises over an isolated offshore zebra mussel reef (7-11 m deep) in Western Lake Erie to examine the effect of zebra mussels (Dreissena spp.) on the water column. The horizontal currents over the reef were found to be primarily due to the hydraulic flow and surface gravitational seiches. The turbulence generated by these currents was found to be too weak to fully mix the water column. Although seasonal stratification was not observed, solar heating during the day and intrusions of cold central basin water caused stable stratification of the water column 60% of the time. Results from the seston analysis taken at five depths showed a statistically significant mussel-feeding signature in chlorophyll a and organic seston concentrations measured within 2 m above the reef. Estimates of clearance rates based on field data were consistent with rates measured in a flow chamber using water from the site, which indicated that zebra mussels could remove up to 40% of the total seston. The detection of a zebra mussel-induced concentration boundary layer is due to: (1) reduced vertical mixing as a result of semidiurnal periodic stratification, (2) refiltration of bottom water in zebra mussel populations, and (3) in situ clearance rates that are lower than those observed in the laboratory. Thus, offshore zebra mussel colonies may have less of an effect on the water column than had been previously estimated by simple stirred reactor models, and the role of zebra mussels in the clarification of Lake Erie should be investigated further.

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Section: Discussionmentioning

confidence: 99%

Benthic‐Pelagic coupling over a zebra mussel reef in western Lake Erie

Ackerman¹,

Loewen²,

Hamblin³

2001

Limnology & Oceanography

139

120

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“…Although the magnitude of the Pandorina bloom event was surprising, accumulations of chlorophytes and cyanobacteria, or both, throughout the western basin were not unexpected. Both phylogenetic groups thrive in nutrient-enriched waters (Moss 1977;Paerl 1988) and historically have been abundant throughout western Lake Erie (Munawar and Munawar 1996;Nicholls 1997;Makarewicz et al 1999). Chlorophytes are characterized by high growth/loss rates and a high demand for nutrients, whereas cyanobacteria typically have lower growth/loss rates and a lower nutrient demand (than chlorophytes; Jensen et al 1994;see Paerl and Millie 1996).…”

Section: Phytoplankton and Environmental Influencesmentioning

confidence: 99%

Late-summer phytoplankton in western Lake Erie (Laurentian Great Lakes): bloom distributions, toxicity, and environmental influences

et al. 2009

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Phytoplankton abundance and composition and the cyanotoxin, microcystin, were examined relative to environmental parameters in western Lake Erie during late-summer (2003)(2004)(2005). Spatially explicit distributions of phytoplankton occurred on an annual basis, with the greatest chlorophyll (Chl) a concentrations occurring in waters impacted by Maumee River inflows and in Sandusky Bay. Chlorophytes, bacillariophytes, and cyanobacteria contributed the majority of phylogenetic-group Chl a basin-wide in 2003, 2004, and 2005, respectively. Water clarity, pH, and specific conductance delineated patterns of group Chl a, signifying that water mass movements and mixing were primary determinants of phytoplankton accumulations and distributions. Water temperature, irradiance, and phosphorus availability delineated patterns of cyanobacterial biovolumes, suggesting that biotic processes (most likely, resource-based competition) controlled cyanobacterial abundance and composition. Intracellular microcystin concentrations corresponded to Microcystis abundance and environmental parameters indicative of conditions coincident with biomass accumulations. It appears that environmental parameters regulate microcystin indirectly, via control of cyanobacterial abundance and distribution.

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“…Laboratory studies under controlled conditions of mussel feeding in the presence of colonial and filamentous cyanobacteria are scarce (Dionisio-Pires et al, 2005;Bontes et al, 2007). Studies performed with natural seston containing natural colonies of Microcystis have found that D. polymorpha promoted the increase of cyanobacteria densities by low filtration on colonies and their rejection as pseudofeces (Baker et al, 1998;Makarewicz et al, 1999;Vanderploeg et al, 2001;Nicholls et al, 2002;Naddafi et al, 2007). Natural colonies of Microcystis are usually large, therefore non-preferentially ingested (Vanderploeg et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Grazing impacts of the invasive bivalve Limnoperna fortunei (Dunker, 1857) on single-celled, colonial and filamentous cyanobacteria

et al. 2012

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Feeding behavior of the invasive bivalve Limnoperna fortunei in the presence of single-celled, colonial, and filamentous cyanobacteria was tested in laboratory experiments to evaluate the effects of size and shape on mussel feeding. The first hypothesis holds that golden mussel filters more efficiently smaller particles, such as single cells of Microcystis, which could be more easily assimilated by its filtering apparatus. The second hypothesis sustains that L. fortunei filters more efficiently rounded colonies, such as Microcystis, which would be more easily ingested than lengthy filamentous, such as Planktothrix. Filtration rates of golden mussel in the presence of single-celled, colonial and filamentous cyanobacteria were similar. Nevertheless, there was a great difference in the ingestion and pseudofeces production rates. Single cells were widely accepted as food, while filamentous and colonial cyanobacteria were massively expelled as pseudofeces. The results confirmed the first hypothesis that golden mussel prefers to ingest smaller particles. The second hypothesis was rejected since filamentous were preferentially ingested than colonial cyanobacteria. Golden mussel has the potential to remove toxic cells (Microcystis), however this potential would be reduced in cyanobacteria blooms, where colonial forms which are preferentially rejected by L. fortunei, are predominant. In this case, the presence of this invasive bivalve could also enhance the occurrence of blooms by rejecting colonial and filamentous cyanobacteria in pseudofeces.Keywords: golden mussel, Microcystis, Planktothrix, filtration rates, exotic species. Impactos da filtração do bivalve invasor

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Phytoplankton Composition and Biomass in the Offshore Waters of Lake Erie: Pre- and Post-Dreissena Introduction (1983–1993)

Cited by 104 publications

References 30 publications

Benthic‐Pelagic coupling over a zebra mussel reef in western Lake Erie

Benthic‐Pelagic coupling over a zebra mussel reef in western Lake Erie

Late-summer phytoplankton in western Lake Erie (Laurentian Great Lakes): bloom distributions, toxicity, and environmental influences

Grazing impacts of the invasive bivalve Limnoperna fortunei (Dunker, 1857) on single-celled, colonial and filamentous cyanobacteria

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