Biology

Auer, Martin T.; Effler, Steven W.; Storey, Michelle L.; Connors, Susan D.; Sze, Philip; Siegfried, Clifford A.; Auer, Nancy A.; Madsen, John D.; Smart, R. M.; Eichler, Lawrence W.; Boylen, Charles W.; Sutherland, Jeffrey W.; Bloomfield, Jay A.; Wagner, Bruce A.; Danehey, Robert; Ringler, Neil A.; Gandino, Christopher J.; Hirethota, Pradeep S.; Tango, Peter J.; Arrigo, Mark A.; Morgan, C. Lloyd; Millard, Christopher; Murphy, Margaret H.; Sloan, Ronald J.; Niehaus, Stephen L.; Whitehead, Keith A.

doi:10.1007/978-1-4612-2318-4_6

Cited by 4 publications

(1 citation statement)

References 170 publications

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“…Onondaga Lake samples of sediments, water and macrophytes were obtained between June and August 2001 at 1 m and 3 m depths perpendicular to the shoreline at Hiawatha Point, a location within the littoral zone of the lake at which both macrophytes (see Madsen et al, 1996) and fish (see Auer et al, 1996) previously have been sampled. An Ekman grab lowered from an anchored Avon Model # BS MA 16 inflatable dinghy was used to collect littoral sediments which were sieved (0.5 mm) to screen out macroinvertebrates and debris.…”

Section: System Descriptions Sample Collection and Preparationmentioning

confidence: 99%

Mercury-Resistant Bacteria Associated With Macrophytes from A Polluted Lake

Caslake

Harris

Williams

et al. 2006

Water Air Soil Pollut

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Although Onondaga Lake in the Syracuse NY area is contaminated with high levels of mercury from past manufacturing operations, macrophytes in the lake have been able to survive, apparently withstanding mercury toxicity. Homogenates of three macrophyte species, Myriophyllum spicatum L., Potamogeton crispus L., and Stuckenia pectinata (L.) Borner, were phenotypically positive for the presence of mercury resistant bacteria. As determined by PCR analysis, the mercury resistant bacteria associated with M. spicatum and S. pectinata also possessed merA, one of the more widely studied essential genes in the mer operon. Analysis of 24 macrophyte taxa isolated from lakes across the United States, as well as biological supply houses, showed that mercury resistant bacteria were associated with all macrophytes. One possible explanation for the association of mercury resistant bacteria with macrophytes is described. This hypothesis suggests that Hg r bacteria may potentially ameliorate the negative effects that mercury elicits in macrophytes.

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Section: System Descriptions Sample Collection and Preparationmentioning

confidence: 99%

Mercury-Resistant Bacteria Associated With Macrophytes from A Polluted Lake

Caslake

Harris

Williams

et al. 2006

Water Air Soil Pollut

View full text Add to dashboard Cite

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A comparison of fibre‐optic distributed temperature sensing to traditional methods of evaluating groundwater inflow to streams

Briggs

Lautz

McKenzie

2011

Hydrological Processes

114

123

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Abstract:There are several methods for determining the spatial distribution and magnitude of groundwater inputs to streams. We compared the results of conventional methods [dye dilution gauging, acoustic Doppler velocimeter (ADV) differential gauging, and geochemical end-member mixing] to distributed temperature sensing (DTS) using a fibre-optic cable installed along 900 m of Ninemile Creek in Syracuse, New York, USA, during low-flow conditions (discharge of 1Ð4 m 3 s 1 ). With the exception of differential gauging, all methods identified a focused, contaminated groundwater inflow and produced similar groundwater discharge estimates for that point, with a mean of 66Ð8 l s 1 between all methods although the precision of these estimates varied. ADV discharge measurement accuracy was reduced by non-ideal conditions and failed to identify, much less quantify, the modest groundwater input, which was only 5% of total stream flow. These results indicate ambient tracers, such as heat and geochemical mixing, can yield spatially and quantitatively refined estimates of relatively modest groundwater inflow even in large rivers. DTS heat tracing, in particular, provided the finest spatial characterization of groundwater inflow, and may be more universally applicable than geochemical methods, for which a distinct and consistent groundwater end member may be more difficult to identify.

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