Biological implications of empirical models of winter oxygen depletion

Meding, Marianne E.; Jackson, Leland J.

doi:10.1139/f01-109

Cited by 24 publications

(20 citation statements)

References 29 publications

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“…Freezing and thawing may have influenced DO concentrations in the topmost water layer, as was demonstrated in the simple laboratory test (see Table S4). Meding and Jackson () also showed this in a study of 23 North American temperate lakes. However, in their data set, freeze‐out had a lower role in DO than photosynthesis.…”

Section: Discussionmentioning

confidence: 67%

Under‐ice metabolism in a shallow lake in a cold and arid climate

Song

Shi

et al. 2019

Freshwater Biology

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Winter is a long period of the annual cycle of many lakes in the northern hemisphere. Low irradiance, ice, and snow cover cause poor light penetration into the water column of these lakes. Therefore, in northern lakes, respiration often exceeds primary production leading to low dissolved oxygen concentrations. This study aimed to quantify under‐ice metabolic processes during winter in an arid zone lake with little snow cover. This study was carried out in a mid‐latitude lake in Inner Mongolia, northern China. The study lake receives relatively high incoming solar radiation on the ice in mid‐winter, and radiation can penetrate down to the bottom sediment as the lake is shallow and the ice lacks snow cover. Primary production and respiration were estimated during two winters using high‐frequency sensor measurements of dissolved oxygen. To quantify under‐ice metabolic processes, sensors were deployed to different depths. During both winters, sensors collected data every 10 min over several weeks. The amount of solar radiation controlled photosynthesis under ice; temperature and photosynthesis together appeared to control respiration. The balance between gross primary production and ecosystem respiration was especially sensitive to changes in snow cover, and the balance between P and R decreased. Our data suggest that photosynthesis by plankton, submerged plants, and epiphytic algae may continue over winter in shallow lakes in mid‐latitudes when there is no snow cover on the ice, as may occur in arid climates. The continuation of photosynthesis under ice buffers against dissolved oxygen depletion and prevents consequent harmful ecosystem effects.

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Section: Discussionmentioning

confidence: 67%

Under‐ice metabolism in a shallow lake in a cold and arid climate

Song

Shi

et al. 2019

Freshwater Biology

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“…; where O 2 is the dissolved oxygen concentration, A is the initial [O 2 ] at freezing, e is the base of the natural logarithm, k is the decay rate, and t is time), which we previously deemed most appropriate for similar shallow lakes (Meding and Jackson 2001). We evaluated model fits by vi- Table 3.…”

Section: Methodsmentioning

confidence: 99%

“…For all lakes, the independent variable, time, began with day 0 at freezing. To attempt to correct for O 2 inputs during the initial period after freezing, initial O 2 concentration data were consecutively removed, and the model was refit to the remainder of the O 2 data as outlined in Meding and Jackson (2001). Data were no longer removed once the highest F value was achieved.…”

Section: Methodsmentioning

confidence: 99%

Biotic, chemical, and morphometric factors contributing to winter anoxia in prairie lakes

Meding

Jackson

2003

Limnology & Oceanography

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To assess how features of lakes and their watersheds influence winter oxygen decay rates and the frequency of anoxia in shallow prairie lakes, we measured lake and watershed characteristics for 21 south-central Alberta lakes and related these to measured oxygen decay rates during 1998-2000. Oxygen decay rates were functions of macrophyte biomass, percentage littoral area, and total phosphorus and ranged from 0.006 to 0.216 mg O 2 m Ϫ3 d Ϫ1 . Oxygen decay rates were ϳ4 times higher in shallow polymictic lakes compared to deep, stratified lakes. Within shallow lakes, those classified as turbid had decay rates ϳ1.5 times higher than those classified as clear. Chlorophyll a was not a predictor of the oxygen decay rate in shallow lakes; however, macrophyte-derived carbon averaged ϳ150 times more than phytoplankton-derived carbon in the shallow lakes we examined. Reasons that lakes frequently or never become anoxic are related to productivity and morphometry; however, processes explaining occasional anoxia appear not to be related to factors we measured.Dissolved oxygen (O 2 ) is a common water quality indicator. Nutrient enrichment enhances primary production, increases O 2 depletion rates, and leads to decreased water quality (Dillon et al. 1978;Snodgrass and Ng 1985;Lind 1987;Gelda and Auer 1996). When low O 2 concentration results in anoxia, fish die. Fish kills have resulted in a need to predict anoxia to proactively manage lakes with goals of sustaining productive fisheries and maintaining ecosystem stability. Loss of a top predator has consequences to lower trophic levels; hence anoxia can affect community structure. The frequency and extent of fish kills determine the structure of fish assemblages (Tonn and Magnuson 1982;Rahel 1984) with implications to lower trophic levels (Carpenter and Kitchell 1993).In lakes, winter O 2 budgets are a function of the O 2 mass at freezing, the duration of ice cover, and the balance of processes that produce and consume O 2 . Winter O 2 depletion rates depend on the particulate organic matter (POM) mass decomposing in the lake (Lasenby 1975;Welch et al. 1976;Cornett and Rigler 1980;Mathias and Barica 1980;Jackson and Lasenby 1982), which is composed of senesced aquatic macrophytes and phytoplankton produced during the previous summer. Microbial decomposition of POM and chemical oxidation of reduced inorganic chemical species results in biological O 2 demand (BOD) and chemical O 2 demand (COD). Oxygen consumption in the water and sediments is primarily a function of lake productivity, since BOD and COD are proportional to the supply of oxidizeable material 1 Present address: Arizona Game and Fish Department, 2221 West Greenway Road, Phoenix, Arizona 85023-4399.2 Corresponding author (ljackson@ucalgary.ca). AcknowledgmentsWe thank S. Herman and Alberta Environment, Department of Sustainable Resources, for use of equipment and background data for Caroline lakes, and landowners who graciously allowed us access to lakes. We also thank C. Solohub, S. Wilson, and J. Grayson ...

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“…Canadian studies have shown higher oxygen depletion under ice in shallow lakes with abundant macrophyte biomass (Meding and Jackson 2001). This may, in turn, affect the entire trophic dynamic and water clarity quite substantially in such lakes (Bayley and Prather 2003).…”

Section: Central Themes: Prevalance Of Fish Influence In Shallow Lakesmentioning

confidence: 99%