Effect of Ambient Oxygen Concentration on Measurements of Sediment Oxygen Consumption

Campbell, Peter J.; Rigler, F. H.

doi:10.1139/f86-168

Cited by 8 publications

(4 citation statements)

References 16 publications

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“…Lasenby (1975) and Cornett & Rigler (1984) observed that hypolimnetic DO concentrations decreased linearly over time, independent of oxygen concentration. Conversely, Campbell & Rigler (1986) reported that ambient DO concentrations <2–3 g O 2 m −3 caused DO depletion rates to decline. The exclusion of volume‐weighted DO concentrations <2 g O 2 m −3 when calculating rates of DO depletion by linear regression prevented these anomalies affecting the resultant VHOD obs .…”

Section: Discussionmentioning

confidence: 98%

Long-term changes in oxygen depletion in a small temperate lake: effects of climate change and eutrophication

Foley¹,

et al. 2011

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1. We analysed 41 years of data from Blelham Tarn, U.K., to determine the consequences of eutrophication and climate warming on hypolimnetic dissolved oxygen (DO). 2. The establishment of thermal stratification was strongly related to the onset of DO depletion in the lower hypolimnion. As a result of a progressively earlier onset of stratification and later overturn, the duration of stratification increased by 38 ± 8 days over the 41 years. 3. The observed rate of volumetric hypolimnetic oxygen depletion (VHOD obs ) ranged from 0.131 to 0.252 g O 2 m )3 per day and decreased significantly over the study period, despite the increase in the mean chlorophyll a (Chl a) concentration in the growing season. The vertical transport of DO represented from 0 to 30% of VHOD obs , while adjustments for interannual differences in hypolimnetic temperature were less important, ranging from )11 to 9% of VHOD obs . 4. The mean wind speed during May made the strongest significant contribution to the variation in VHOD obs . VHOD obs adjusted for the vertical transport of DO and hypolimnetic temperature differences, VHOD adj , was significantly related to the upper mixed layer Chl a concentration during spring. 5. Hypolimnetic anoxia (HA) ranged from 27 to 168 days per year and increased significantly over time, which undoubtedly had negative ecological consequences for the lake. 6. In similar small temperate lakes, the negative effects of eutrophication on hypolimnetic DO are likely to be exacerbated by changes in lake thermal structure brought about by a warming climate, which may undermine management efforts to alleviate the effects of anthropogenic eutrophication.

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Section: Discussionmentioning

confidence: 98%

Long-term changes in oxygen depletion in a small temperate lake: effects of climate change and eutrophication

Foley¹,

et al. 2011

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“…In multilake studies of oxygen depletion, Lasenby (1975) and Cornett and Rigler (1984) observed that hypolimnetic DO concentrations decreased linearly with time, suggesting that the process of hypolimnetic oxygen depletion is independent of the ambient DO concentration. However, evidence also exists that DO concentrations Ͻ2-3 mg L Ϫ1 cause lower depletion rates (Cornett and Rigler 1984;Campbell and Rigler 1986). Burns (1995) recommends that hypolimnetic oxygen depletion rates should not be calculated for hypolimnia with DO concentrations Ͻ2-3 mg L Ϫ1 .…”

Section: Discussionmentioning

confidence: 99%

Long‐term changes in the areal hypolimnetic oxygen deficit (AHOD) of Onondaga Lake: Evidence of sediment feedback

Matthews

Effler

2006

Limnology & Oceanography

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Long-term trends in the rate of depletion of hypolimnetic dissolved oxygen (DO) are documented for ionically enriched hypereutrophic Onondaga Lake, New York, for the 1978-2002 interval. Depletion rates, represented as areal hypolimnetic oxygen deficits (AHOD, g m Ϫ2 d Ϫ1), are calculated on the basis of weekly DO profiles of 1-m resolution and estimates of coincident inputs of DO from overlying layers driven by vertical mixing. Vertical mixing inputs of DO are important in this system, representing from 15% to 37% (mean 25%) of AHOD. Interannual variations in hypolimnetic temperatures have comparatively minor (Ϯ6%) effects on AHOD. AHOD decreased 49%, from an average of 2.12 g m Ϫ2 d Ϫ1 for the 1978-1986 interval, to an average of 1.08 g m Ϫ2 d Ϫ1 for the 1997-2002 interval. This decrease was driven by an abrupt decrease in the deposition of particulate organic carbon into the hypolimnion starting in 1987. The magnitude of the decrease in AHOD closes reasonably well with decreases in both primary production in the trophogenic zone and organic carbon deposition to the tropholytic zone. The time course of the decrease in AHOD is consistent with localization of oxygen-demanding processes within the lake sediments, reflecting the progression of sediment diagenesis.

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“…Campbell & Rigler (1986) investigated the dependence of AT S on oxygen concentrations and they concluded that A" s was independent of ambient oxygen concentration above 3 g m~3, but that K^ varied with oxygen concentration below that level with the dependence showing up more strongly below 2 g m 3 . In experiments on the dependence of K w on ambient oxygen levels, Cornett & Rigler (1984) found dependence existed only below 2 g m~3.…”

Section: Process 1: Effects Of Ambient Dissolved Oxygen (Do) Concentrmentioning

confidence: 99%

Using hypolimnetic dissolved oxygen depletion rates for monitoring lakes

Burns

1995

New Zealand Journal of Marine and Freshwater Research

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Volumetic hypolimnetic oxygen depletion, caused primarily by the decomposition of organic material in the hypolimnion (VHDR org ), is considered to be an important indicator of the trophic state of lakes and is used to detect change of trophic state. The observed volumetric hypolimnetic depletion rate (VHDR obs ) is usually different from VHDR org because of phenomena which can alter the concentrations of oxygen in the hypolimnion. The nine different phenomena which can affect the rate at which the observed hypolimnetic dissolved oxygen depletes are reviewed. In many instances, if the limnology of the system is understood, the perturbations to the hypolimnetic respiration rate, VHDR org caused by these phenomena can be ignored and VHDR obs used for lake management. Guidance is provided as to when the effects of these phenomena can be ignored and when they cannot be. Should corrections be necessary, methods for calculating the effects of physical perturbations are outlined. However, most of the effects caused by biological perturbations from changes in algal species cannot be eliminated, except for those caused by hypolimnetic production.

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Effect of Ambient Oxygen Concentration on Measurements of Sediment Oxygen Consumption

Cited by 8 publications

References 16 publications

Long-term changes in oxygen depletion in a small temperate lake: effects of climate change and eutrophication

Long-term changes in oxygen depletion in a small temperate lake: effects of climate change and eutrophication

Long‐term changes in the areal hypolimnetic oxygen deficit (AHOD) of Onondaga Lake: Evidence of sediment feedback

Using hypolimnetic dissolved oxygen depletion rates for monitoring lakes

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