Effects of the burrowing mayfly, Hexagenia, on nitrogen and sulfur fractions in lake sediment microcosms

Lawrence, Gregory B.; Mitchell, Myron J.; Landers, Dixon H.

doi:10.1007/bf00007235

Cited by 20 publications

(11 citation statements)

References 22 publications

(23 reference statements)

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“…Organisms may accelerate this process and affect S transformation by altering these parameters via burrowing and active pumping (Lawrence et al, 1982;Lawrence & Mitchell, 1985). Moderate numbers of small benthic organisms (e.g., chironomids, tubificids) were observed in all cores at all sampling times and no attempt was made to remove them except that large bivalves, only present in Oneida Lake, were excluded.…”

Section: Discussionmentioning

confidence: 99%

Incorporation of 35SO42− into sediments of three New York lakes

Landers

Mitchell

1988

Hydrobiologia

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Intact sediment cores were obtained from three New York lakes in May, July, and October 1981. Radioactive S (as 3 5 SO2) was added to the overlying water and cores were incubated without atmospheric exchange for one week near lake bottom temperatures. Headspace flux of 02 as an index of sediment respiration rates varied among lakes and seasonally within lakes. Acidic South Lake had the lowest respiration rate at all seasons and also the smallest net incorporation of the 35 SO2 . Summer net isotope transformation into ester sulfate and non-HI reducible S (pyrite and C-bonded S) constituents was 88.6%, 89.4%, and 59.7% of total sediment isotope for Oneida, Deer, and South, respectively. Seasonal variation of net isotope incorporation was observed in each lake as were differences in 35SO2-partitioning into major S pools. Of the S constituents analyzed, HCl digestible S (volatile sulfides) was the smallest pool, while ester sulfate and non-HI reducible S together accounted for greater than 50%6 of S isotope transformation in all lakes. In addition, ester sulfate is the major product of dissolved SO2-transformation and its formation results in less alkalinity generation than the formation of non-HI reducible S constituents. Thus ester sulfate transformation processes must be considered in calculating alkalinity generation by lake sediments.

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Section: Discussionmentioning

confidence: 99%

Incorporation of 35SO42− into sediments of three New York lakes

Landers

Mitchell

1988

Hydrobiologia

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“…For example, concentrations of AVS in surficial sediments have been shown to vary seasonally [16,17], presumably due to changes in rates of formation versus oxidation of AVS. Significant oxidation of surficial sediments can also occur as a result of the activity of benthic organisms [18][19][20][21]. No work has been done, however, to investigate the potential changes in bioavailability of metals in surficial sediments under the oxic conditions potentially associated with bioturbation.…”

Section: Introductionmentioning

confidence: 95%

Effect of bioturbation on metal‐sulfide oxidation in surficial freshwater sediments

Peterson

Ankley

Leonard

1996

Enviro Toxic and Chemistry

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Abstract-Recent studies have demonstrated the role of acid-volatile sulfide (AVS) in controlling the bioavailability of several cationic metals in anoxic sediments. However, metal-sulfide complexes can be relatively labile with respect to oxidation associated with factors such as seasonal changes in rates of oxidation/production of AVS. Another potentially important mechanism of AVS oxidation in surficial sediments is bioturbation. We used different densities of the burrowing oligochaete Lumbriculus variegatus in a series of laboratory experiments to evaluate the effect of bioturbation on oxidation of AVS and subsequent bioavailability of cadmium and zinc spiked into freshwater sediments. Metal bioavailability was determined directly by bioaccumulation in the test organisms and indirectly through analysis of interstitial (pore) water metal concentrations. In our studies, horizon-specific sediment analyses were conducted to assess spatial differences in AVS and pore-water metal concentrations specifically related to organism activity. Burrowing activity of the oligochaete significantly reduced AVS concentrations in surficial sediments in a density-dependent manner and resulted in elevated interstitial water concentrations of cadmium but not zinc. Concentrations of cadmium in pore water from deeper horizons (below the zone of active burrowing) were consistently lower than those in the surficial sediments. The bioaccumulation of cadmium and zinc by L. variegatus was reflective of pore-water concentrations of the two metals, i.e., there was significant accumulation of cadmium, but not zinc, by the oligochaetes. Overall, our results indicate that bioturbation can enhance the bioavailability of some cationic metals in surficial sediments, via oxidation of AVS, and demonstrate the importance of analyzing surficial sediments when assessing bioavailability of metals in sediments.

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“…Redox changes can alter metal binding affinities between the solid and dissolved phases, significantly modifying the speciation and bioavailability of most metals in sediments (De Jonge et al, 2012;Doyle and Otte, 1997;Granberg et al, 2008). The concentration of AVS has a major influence on metal bioavailability, and for sediments containing a molar excess of acid volatile sulfide (AVS) over simultaneously extractable metals (SEM, ΣCd, Cu, Ni, Pb, Zn), it is predicted that the porewater concentrations of these metals will be negligible and should not cause direct toxicity to benthic organisms Hansen et al, 2005;Lawrence et al, 1982). In addition, the activity of microbes such as Desulfuromonadales and Geobacter sulfurreducens in abandoned burrows also contributes to the release of metals from anoxic sediments to the pore waters and overlying water column (Kristensen, 2008;Meysman et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

The impact of sediment bioturbation by secondary organisms on metal bioavailability, bioaccumulation and toxicity to target organisms in benthic bioassays: Implications for sediment quality assessment

Remaili

Simpson

Amato

et al. 2016

Environmental Pollution

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. (2015). The impact of sediment bioturbation by secondary organisms on metal bioavailability, bioaccumulation and toxicity to target organisms in benthic bioassays: implications for sediment quality assessment. Environmental Pollution, 208 (Part B), 590-599. See next page for additional authorsThe impact of sediment bioturbation by secondary organisms on metal bioavailability, bioaccumulation and toxicity to target organisms in benthic bioassays: implications for sediment quality assessment AbstractBioturbation alters the properties of sediments and modifies contaminant bioavailability to benthic organisms. These naturally occurring disturbances are seldom considered during the assessment of sediment quality. We investigated how the presence (High bioturbation) and absence (Low bioturbation) of a strongly bioturbating amphipod within three different sediments influenced metal bioavailability, survival and bioaccumulation of metals to the bivalve Tellina deltoidalis. The concentrations of dissolved copper decreased and manganese increased with increased bioturbation. For copper a strong correlation was observed between increased bivalve survival (53-100%) and dissolved concentrations in the overlying water. Increased bioturbation intensity resulted in greater tissue concentrations for chromium and zinc in some test sediments. Overall, the results highlight the strong influence that the natural bioturbation activities from one organism may have on the risk contaminants pose to other organisms within the local environment. The characterisation of field-based exposure conditions concerning the biotic or abiotic resuspension of sediments and the rate of attenuation of released contaminants through dilution or readsorption may enable laboratorybased bioassay designs to be adapted to better match those of the assessed environment.  Strong correlations between bioaccumulated and dissolved Cd, Cr, Pb, Zn, Cu and Ni. Weak correlations between bioaccumulated and particulate metals. 2 Capsule AbstractThis study investigated the impact of sediment bioturbation intensity on metal bioavailability and toxicity to aquatic organisms, and the implications of this to toxicity test design. Abstract:Bioturbation alters the properties of sediments and modifies contaminant bioavailability to benthic organisms. These naturally occurring disturbances are seldom considered during the assessment of sediment quality. We investigated how the presence (High bioturbation) and absence (Low bioturbation) of a strongly bioturbating amphipod within three different sediments influenced metal bioavailability, survival and bioaccumulation of metals to the bivalve Tellina deltoidalis. The concentrations of dissolved copper decreased and manganese increased with increased bioturbation. For copper a strong correlation was observed between increased bivalve survival (53 to 100%) and dissolved concentrations in the overlying water. Increased bioturbation intensity resulted in greater tissue concentrations for chromium and zinc in some test sediments. O...

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Effects of the burrowing mayfly, Hexagenia, on nitrogen and sulfur fractions in lake sediment microcosms

Cited by 20 publications

References 22 publications

Incorporation of 35SO42− into sediments of three New York lakes

Incorporation of 35SO42− into sediments of three New York lakes

Effect of bioturbation on metal‐sulfide oxidation in surficial freshwater sediments

The impact of sediment bioturbation by secondary organisms on metal bioavailability, bioaccumulation and toxicity to target organisms in benthic bioassays: Implications for sediment quality assessment

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