Zooplankton impacts on chlorophyll and transparency in Onondaga Lake, New York, USA

Auer, Martin T.; Storey, Michelle L.; Effler, Steven W.; Auer, Nancy A.; Sze, Philip

doi:10.1007/978-94-017-0924-8_54

Cited by 8 publications

(6 citation statements)

References 5 publications

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“…with previous research (Auer et al 1990), we observed a distinct water clearing event in 1996 and 1997. We wish to know, however, if the exotic species, abundant in the lake prior to 1978, also produce a CWP, and if so, when?…”

Section: Species Extinction and Replacement And Ecosystem Dynamicssupporting

confidence: 91%

“…After the exotic species disappeared, both previously present native species reinvaded in the late 1980s along with Daphnia galeata mendotae (also called Daphnia mendotae; Hebert [1995]), a species native to the northeastern United States. The timing of recolonization (1987, according to plankton samples; Auer et al [1990]) corresponds precisely with the marked decline in lake salinity that accompanied the cessation of soda ash production in 1986 (Effler 1996). The abundance of diapausing eggs of the native species generally increases in the top 3 cm of the core (Fig.…”

Section: Special Featurementioning

confidence: 82%

“…In the late 1960s, summer primary producers were comprised largely of cyanobacteria (Sze and Kingsbury 1972), and water-column chlorophyll-a values likely exceeded 200 g/L (Effler 1996). Auer et al (1990) noted that, during 1979-1986, summer-time water transparency was poor when Daphnia and other larger planktonic crustaceans were rare or absent. Auer et al (1990) noted that, during 1979-1986, summer-time water transparency was poor when Daphnia and other larger planktonic crustaceans were rare or absent.…”

Section: A Brief History Of the Pollution Of Onondaga Lakementioning

confidence: 99%

“…Mean Secchi disk depth averaged less than one meter with little variation during the ice-free season ( Fig. The year following the closing of the soda ash industry in 1986, three genera of relatively large crustaceans, Daphnia, Diaphanosoma, and Diaptomus, appeared in the plankton and remained seasonally present through 1989, the end of the Auer et al (1990) study. Rafts of ephippia (egg cases containing diapausing eggs) of Daphnia galeata mendotae trapped in the surface film of Onondaga Lake, New York, at the end of the clear-water phase in spring 1998.…”

Section: A Brief History Of the Pollution Of Onondaga Lakementioning

confidence: 99%

“…Rafts of ephippia (egg cases containing diapausing eggs) of Daphnia galeata mendotae trapped in the surface film of Onondaga Lake, New York, at the end of the clear-water phase in spring 1998. Auer et al (1990) showed that this change is a product of elevated grazing in early summer causing a crash in phytoplankton and increase in water clarity that is the clear-water phase. Tracks left by ducks swimming through the ephippia can be seen in the band farthest from shore, which is interesting because ducks are often hypothesized to be vectors transporting zooplankton diapausing eggs among lakes.…”

Section: A Brief History Of the Pollution Of Onondaga Lakementioning

confidence: 99%

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Species-Specific Daphnia Phenotypes: A History of Industrial Pollution and Pelagic Ecosystem Response

Hairston

Kearns

Demma

et al. 2005

Ecology

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Phenotypic differences among species, even closely related species, may translate into distinct effects on ecosystem dynamics. In lakes, the generalist grazer genus Daphnia often has marked effects on the abundance of primary producers, the rate of primary production, and rates of nutrient cycling. The effects are particularly distinct during the clear-water phase (CWP) when algal biomass is driven to extremely low values as Daphnia densities undergo an annual population increase. Here we show that the timing of the CWP in Onondaga Lake, New York, USA, has depended upon which Daphnia species were present in the water column. An analysis of the ephippia and diapausing eggs from the sediments reveals that long-term changes in the zooplankton species assemblage tracks a history of chemical (especially salt waste) pollution. Prior to 1930 the assemblage was dominated by native D. pulicaria and D. ambigua. From 1930 to 1980, these species were replaced by D. exilis and D. curvirostris, two salinity-tolerant exotic species native to shallow salt pools of the southwestern United States and coastal brackish ponds of Europe, respectively. As industry was progressively shut down by government action over the period from the 1970s to the 1980s, the exotic species disappeared, and the two native taxa returned (plus D. galeata mendotae, which is also native to the region). As we have shown previously, the exotic species were identified either by hatching and rearing diapausing eggs (D. exilis) or by analysis of eggs using mtDNA (D. curvirostris). We interpret their role in seasonal algal dynamics in Onondaga Lake retrospectively using data collected in prior studies of the lake. The native Daphnia currently cause a typical spring CWP in late May and early June, whereas the exotic species caused an unusual late-summer (August-October) CWP during the period of maximum cyanobacterial density.

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Section: Species Extinction and Replacement And Ecosystem Dynamicssupporting

confidence: 91%

Section: Special Featurementioning

confidence: 82%

Section: A Brief History Of the Pollution Of Onondaga Lakementioning

confidence: 99%

Section: A Brief History Of the Pollution Of Onondaga Lakementioning

confidence: 99%

Section: A Brief History Of the Pollution Of Onondaga Lakementioning

confidence: 99%

See 3 more Smart Citations

Species-Specific Daphnia Phenotypes: A History of Industrial Pollution and Pelagic Ecosystem Response

Hairston

Kearns

Demma

et al. 2005

Ecology

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Assessing the trophic state of Linhos lake: a first step towards ecological rehabilitation

Pereira

Soares

Ribeiro

et al. 2002

Journal of Environmental Management

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Lack of recognition of the value of wetlands has led to the loss of considerable areas of these ecosystems in the past.Linhos lake (Figueira da Foz, Portugal) is a good example of one of these ecosystems, in which human intervention was responsible for its environmental degradation and led to its precocious terrestrialization. Physico-chemical conditions and zooplankton community structure were studied in Linhos lake, in order to evaluate ecosystem functioning and to acquire baseline information. The system is characterised by high oxygen depletion. Spatial heterogeneity was confirmed by the existence of significant differences in total densities for the three zooplanktonic groups. Rotifers were the most abundant group attaining their maximum density in April (2251Ð1 ind/l). Keratella quadrata, K. cochlearis, Polyarthra vulgaris, Filinia terminalis and Hexarthra mira were the main abundant species. Correspondence analysis suggested temperature as the main controlling factor in species seasonality. In order to prevent the precocious disappearance of the lake some restoration measures were proposed based on zooplankton community structure.

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Measurement and verification of rates of sediment phosphorus release for a hypereutrophic urban lake

et al. 1993

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The contribution of sediment release to the phosphorus budget of hypereutrophic Onondaga Lake was determined through laboratory measurements made on intact cores. Rates ranged from 9-21 mg P m-2 dwith a mean of 13 mg P m-2 d -1, values similar to those observed in other lakes of comparable trophic state. There was no statistically significant trend in rates in time (July versus September) or in space (location along the major N/S axis of the lake). Rates of sediment phosphorus release measured in the laboratory compared favorably with the observed rate of soluble reactive phosphorus accumulation in the lake's hypolimnion. The sediments are the second largest source of phosphorus for Onondaga Lake, contributing 24% of the overall phosphorus load to the system.

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Zooplankton impacts on chlorophyll and transparency in Onondaga Lake, New York, USA

Cited by 8 publications

References 5 publications

Species-Specific Daphnia Phenotypes: A History of Industrial Pollution and Pelagic Ecosystem Response

Species-Specific Daphnia Phenotypes: A History of Industrial Pollution and Pelagic Ecosystem Response

Assessing the trophic state of Linhos lake: a first step towards ecological rehabilitation

Measurement and verification of rates of sediment phosphorus release for a hypereutrophic urban lake

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