The dependence of the consumption of dissolved oxygen on lake morphology in ice covered lakes

Bengtsson, Lars; Maher, Osama Ali

doi:10.2166/nh.2020.150

Cited by 12 publications

(12 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The variability in rates of oxygen depletion and total oxygen depletion in the four lakes studied points to variable controls on oxygen dynamics. The greater depletion in the smaller lakes is to be expected based on the higher organic carbon content in their sediments (MacIntyre et al 2018) and their greater sediment area to volume ratio (Bengtsson and Ali‐Maher 2020). However, as will be seen in the following, other morphological features contribute.…”

Section: Discussionmentioning

confidence: 99%

“…Fish habitats can be reduced or even complete fish kills can occur (Barica and Mathias 1979), and greenhouse gasses, phosphorus, and soluble reduced substances such as Fe 2+ , Mn 2+ , or NH 4 + can accumulate (Karlsson et al 2013; Denfeld et al 2018; Jansen et al 2021). Respiration in the sediments and at the sediment–water interface is largely responsible for oxygen depletion, and is described as sediment oxygen uptake (Terzhevik et al 2010; MacIntyre et al 2018; Bengtsson and Ali‐Maher 2020). Overall depletion depends, in part, on the sediment surface area to volume ratio (Livingstone and Imboden 1996; Bengtsson and Ali‐Maher 2020).…”

mentioning

confidence: 99%

“…Respiration in the sediments and at the sediment–water interface is largely responsible for oxygen depletion, and is described as sediment oxygen uptake (Terzhevik et al 2010; MacIntyre et al 2018; Bengtsson and Ali‐Maher 2020). Overall depletion depends, in part, on the sediment surface area to volume ratio (Livingstone and Imboden 1996; Bengtsson and Ali‐Maher 2020). This ratio then predicts, for lakes with similar benthic communities and sediment organic matter composition, higher loss rates in shallow ice‐covered lakes (Leppi et al 2016).…”

mentioning

confidence: 99%

See 2 more Smart Citations

Oxygen depletion and sediment respiration in ice‐covered arctic lakes

Schwefel

MacIntyre

Cortés

et al. 2023

Limnology & Oceanography

View full text Add to dashboard Cite

Processes regulating the rate of oxygen depletion determine whether hypoxia occurs and the extent to which greenhouse gases accumulate in seasonally ice-covered lakes. Here, we investigate the oxygen budget of four arctic lakes using high-frequency data during two winters in three shallow lakes (9-13 m maximal depth) and four winters in 24 m deep main basin of Toolik Lake. Incubation experiments measured sediment metabolism. Volume-averaged oxygen depletion measured in situ was independent of water temperature and duration of the ice-covered period. Average rates were between 0.2 and 0.39 g O 2 m À2 d À1 in the shallow lakes and between 0.03 and 0.14 g O 2 m À2 d À1 in Toolik Lake, with higher rates in smaller lakes with their larger sediment area to volume ratio. Rates decreased to $ 20%-50% of initial values in late winter in the shallow lakes but less or not at all in Toolik. The lack of a decline in Toolik Lake points to continued oxygen transport to the sediment-water interface where oxygen consumption occurs. In all lakes, lower in situ oxygen depletion than in incubation measurements points toward increasing anoxia in the lower water column depressing loss rates. In Toolik, oxygen loss during early winter was less in years with minimal snow cover. Penetrative convection occurred, which could mix downwards oxygen produced by photosynthesis or excluded during ice formation. Estimates of these terms exceeded photosynthesis measured in sediment incubations. Modeling under ice-oxygen dynamics requires consideration of optical properties and biological and transport processes that modify oxygen concentrations and distributions.

show abstract

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Oxygen depletion and sediment respiration in ice‐covered arctic lakes

Schwefel

MacIntyre

Cortés

et al. 2023

Limnology & Oceanography

View full text Add to dashboard Cite

show abstract

“…The high spatial variability in K exp was less surprising than its temporal variation considering the already well‐observed influence of lake morphology on the DO dynamics under ice (Mathias and Barica 1980; Leppi et al 2016). The DO decay rates are typically faster in shallower lakes under ice (Mathias and Barica 1980; Leppi et al 2016) as a result of a greater contribution of sediment processes to the water column conditions, i.e., greater sediment surface to water volume ratio (Bengtsson and Ali‐Maher 2020).…”

Section: Discussionmentioning

confidence: 99%

“…The DO decay rates are also likely to respond to climate change, potentially through biogeochemical but also physical pathways. For instance, DO decay under the ice primarily arises from the sediment oxygen uptake (SOU; Bengtsson and Ali‐Maher 2020), i.e., the diffusion of oxygen within the sediment where it is consumed by both the aerobic mineralization of sediment organic matter (OM) and the abiotic oxidation of reduced solutes produced by anaerobic microbial metabolism (Müller et al 2012). The oxygen consumption in the sediment increases with the sediment content in OM (Müller et al 2012), so that a greater SOU is expected in situations where climate warming results in greater OM exports to the sediment (Steinsberger et al 2017), either through enhanced lake primary production (Preston et al 2016) or greater terrestrial OM inputs (Couture et al 2015).…”

mentioning

confidence: 99%

Near‐bed stratification controls bottom hypoxia in ice‐covered alpine lakes

Perga

Minaudo

Doda

et al. 2023

Limnology & Oceanography

View full text Add to dashboard Cite

In ice-covered lakes, near-bottom oxygen concentration decreases for most of the wintertime, sometimes down to the point that bottom waters become hypoxic. Studies insofar have reached divergent conclusions on whether climate change limits or reinforces the extent and duration of hypoxia under ice, raising the need for a comprehensive understanding of the drivers of the dissolved oxygen (DO) dynamics under lake ice. Using high-temporal resolution time series of DO concentration and temperature across 14 mountain lakes, we showed that the duration of bottom hypoxia under ice varies from 0 to 236 d within lakes and among years. The variability of hypoxia duration was primarily explained by changes in the decay rate of DO above the lake bottom rather than by differences in DO concentration at the ice onset or in the ice-cover duration. We observed that the DO decay rate was primarily linked to physical controls (i.e., deep-water warming) rather than biogeochemical drivers (i.e., proxies for lake or catchment productivity). Using a simple numerical model, we provided a proof-of-concept that the near-bed stratification can be the mechanism tying the DO decay rate to the sediment heat release under the ice. We ultimately showed that the DO decay rate and hypoxia duration are driven by the summer light climate, with faster oxygen decline found under the ice of clearer cryostratified alpine lakes. We derived a framework theorizing how the hypoxia duration might change under the ice of alpine lakes in a warmer climate.

show abstract

Ice-Covered Lakes Environment

Leppäranta

2023

Freezing of Lakes and the Evolution of Their Ice Cover

View full text Add to dashboard Cite

The dependence of the consumption of dissolved oxygen on lake morphology in ice covered lakes

Cited by 12 publications

References 22 publications

Oxygen depletion and sediment respiration in ice‐covered arctic lakes

Oxygen depletion and sediment respiration in ice‐covered arctic lakes

Near‐bed stratification controls bottom hypoxia in ice‐covered alpine lakes

Ice-Covered Lakes Environment

Contact Info

Product

Resources

About