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Effler, Steven W.; Brooks, Carol M.

doi:10.1023/a:1004916003946

Cited by 11 publications

(29 citation statements)

References 34 publications

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“…Specification of driving conditions related to deposition ( Fig. 1A-G) is supported by a longterm program of measurements of the water column and inputs (Table 1; Effler 1996). Discharge from an adjoining soda ash facility that operated over the 1884-1986 period caused the lake to be unusually saline (salinity , 3 g L 21 ) and enriched in Ca 2+ (, 480 mg L 21 ) before its closure (Fig.…”

Section: Methodsmentioning

confidence: 92%

“…Discharge from an adjoining soda ash facility that operated over the 1884-1986 period caused the lake to be unusually saline (salinity , 3 g L 21 ) and enriched in Ca 2+ (, 480 mg L 21 ) before its closure (Fig. 1A;Effler and Matthews 2003). Abrupt reductions in salinity and Ca 2+ concentrations followed its closure; by 1989, the levels had decreased by 65% ( Fig.…”

Section: Methodsmentioning

confidence: 99%

“…Site description-Onondaga Lake, a dimictic, alkaline, hard-water system, located (43u69540N, 76u149340W) in metropolitan Syracuse, New York, has a volume of 131 3 10 6 m 3 , an area of 12.0 km 2 , and a maximum depth of , 20 m. The lake flushes , 4 times yr 21 on a completely mixed basis and therefore responds rapidly to changes in external loading (Effler 1996). The lake was oligo-mesotrophic before European settlement in the late 1700s, but became severely degraded from inputs of industrial and domestic wastes that accompanied development of the watershed (Effler 1996).…”

Section: Methodsmentioning

confidence: 99%

“…Measurement of the deposition flux, together with external loading information, supports direct estimates of retention. The effects of differences or changes in concentrations of destabilizing divalent cations (e.g., Ca 2+ ) on deposition fluxes have received very limited attention (Weilenmann et al 1989;Effler et al 2001).…”

mentioning

confidence: 99%

“…A disadvantage of such studies is a lack of control over other system-specific differences that may influence the targeted conditions. Long-term singlesystem studies can resolve valuable signatures and support paradigm and hypothesis testing where major changes in drivers and in-lake responses have occurred (Edmondson and Lehman 1981;Lehman 1988;Effler and O'Donnell 2010).…”

mentioning

confidence: 99%

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Deposition signatures in Onondaga Lake, New York: Observations from a 28‐year sediment‐trap study

Effler

Matthews

Hurteau

2012

Limnology & Oceanography

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We tested paradigms and models that relate deposition of phytoplankton constituents to lake metabolism based on analyses of long-term sediment-trap collections (28 yr of the 1980-2010 period) from a dimictic urban lake, Onondaga Lake, New York. There were major changes in a number of important drivers of deposition, including decreases in the concentration of a divalent cation (Ca 2+ ), nutrient loading and primary production, and variations in food-web effects. The summertime downward fluxes of particulate organic carbon (DF POC ), particulate nitrogen, particulate phosphorus (P), and chlorophyll were greater than values reported in the literature at the start of the program and decreased . 70% in response to decreases in Ca 2+ and P loading. Results include (1) the positive dependence of DF POC on primary production, (2) the positive dependence of the rate of hypolimnetic oxygen depletion on DF POC , (3) the negative effect of Daphnia grazing on DF POC under eutrophic and hypereutrophic conditions, and (4) the dependence of the stoichiometry of depositing material on particle origins and nutrient status of the phytoplankton community. The relationship between the export ratio, the fraction of gross primary production lost to deposition, and primary production reported in the literature was extended based on inclusion of Onondaga Lake data, and described by a nonlinear (polynomial function) relationship.

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Section: Methodsmentioning

confidence: 92%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Deposition signatures in Onondaga Lake, New York: Observations from a 28‐year sediment‐trap study

Effler

Matthews

Hurteau

2012

Limnology & Oceanography

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Rapid recovery of benthic invertebrates downstream of hyperalkaline steel slag discharges

2014

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This study assesses the physical and chemical characteristics of hyperalkaline steel slag leachate from a former steelworks on two streams in England and their impacts on 24 benthic invertebrate communities. Using multivariate methods (CCA), we related 25 invertebrate richness and diversity with chemical parameters along the environmental 26 gradient from point sources to less impacted sites downstream. Point discharges are characterised by high pH (10.6-11.5), high ionic strength (dominated by Ca-CO3-OH 28 waters), elevated trace elements (notably Li, Sr and V) and high rates of calcium 29 carbonate precipitation. This combination of stressors gives rise to an impoverished 30 benthic invertebrate community in source areas. The total abundance, taxonomic 31 richness and densities of most observed organisms were strongly negatively correlated 32 with water pH. Analysis using biological pollution monitoring indices (e.g. BMWP and Functional Feeding Groups) shows the system to be highly impacted at source but when pH approaches values close to aquatic life standards, some 500m downstream, complex biological communities become established. In addition to showing the rapid recovery of invertebrate communities downstream of the discharges, this study also provides a baseline characterisation of invertebrate communities at the extreme alkaline range of the pH spectrum.

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