Publications related to Hypolimnion

Effects of climate change on deepwater oxygen and winter mixing in a deep lake (Lake Geneva): Comparing observational findings and modeling

Alfred Johny Wüest, Damien Bouffard, Robert Vincent Schwefel, Adrien Gaudard

Low concentrations of dissolved oxygen remain a global concern regarding the ecological health of lakes and reservoirs. In addition to high nutrient loads, climate-induced changes in lake stratification and mixing represent additional anthropogenic menace ...

American Geophysical Union2016

Oxygen depletion in stratified lakes - why shallow and deep lakes react differently

Alfred Johny Wüest, Robert Vincent Schwefel

Oxygen is the most important element in natural waters for any higher aquatic life, such as fish. As with humans, almost all members of aquatic ecosystems need oxygen to breathe. Building on this, treatment of drinking water is easier for oxic than for ano ...

2016

MERIS observations of phytoplankton blooms in a stratified eutrophic lake

Alfred Johny Wüest

The use of spaceborne medium resolution imaging spectrometers with neural network algorithms has proven a large potential for application with optically complex inland waters. We make use of this approach to investigate the bio-physical dynamics in a eutro ...

Elsevier Science Inc2012

Is phosphorus retention in autochthonous lake sediments controlled by oxygen or phosphorus?

Alfred Johny Wüest, Beat Mueller

Eutrophication of various lakes on the Swiss Plateau was targeted in the 1980s by reducing external nutrient loading and installing aeration/oxygenation systems. For five eutrophic lakes, three of which have been artificially oxygenated and aerated for alm ...

Amer Soc Limnology Oceanography2006

Fate of rising methane bubbles in stratified waters: How much methane reaches the atmosphere?

Alfred Johny Wüest

[ 1] There is growing concern about the transfer of methane originating from water bodies to the atmosphere. Methane from sediments can reach the atmosphere directly via bubbles or indirectly via vertical turbulent transport. This work quantifies methane g ...

Amer Geophysical Union2006

Observations of mixing near the sides of a deep lake in winter

Ulrich Lemmin

The dissipation rate of turbulent kinetic energy per unit mass, epsilon, vertical eddy diffusivity, K-z, and the rate of dissipation of temperature variance, X, are estimated over the sloping sides of Lake Geneva both far from and near the bed, using tempe ...

American Society of Limnology and Oceanography2002

Probability density of displacement and overturning length scales under diverse stratification

Alfred Johny Wüest

[1] Vertical overturns, produced by turbulence in density-stratified lakes and oceans, are often quantified by the Thorpe scale, L-T. The correlation between L-T and the Ozmidov (energy-containing) scale can be used to estimate rates of turbulent dissipati ...

Amer Geophysical Union2002

The role of biogeochemical cycling for the formation and preservation of varved sediments in Soppensee (Switzerland)

Alfred Johny Wüest, Bernhard Wehrli

We analyzed seasonally aggregated observations of temperature, conductivity, dissolved oxygen and dissolved inorganic carbon from Soppensee (District of Lucerne, Switzerland) for the yrs 1980 to 1993. Holomictic Soppensee is characterized by a strong summe ...

Springer2000

Calcite dissolution in two deep eutrophic lakes

Alfred Johny Wüest, Bernhard Wehrli

The calcium cycle, in particular carbonate dissolution, was analyzed in two deep eutrophic lakes, Lago di Lugano (288 m maximum depth) and Sempachersee (87 m) located in Switzerland. A box model approach was used to calculate calcite dissolution in the wat ...

Pergamon-Elsevier Science Ltd1999

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Hypolimnion

Effects of climate change on deepwater oxygen and winter mixing in a deep lake (Lake Geneva): Comparing observational findings and modeling

Oxygen depletion in stratified lakes - why shallow and deep lakes react differently

MERIS observations of phytoplankton blooms in a stratified eutrophic lake

Distribution of denitrifying bacterial communities in the stratified water column and sediment-water interface in two freshwater lakes and the Baltic Sea

Is phosphorus retention in autochthonous lake sediments controlled by oxygen or phosphorus?

Fate of rising methane bubbles in stratified waters: How much methane reaches the atmosphere?

Observations of mixing near the sides of a deep lake in winter

Probability density of displacement and overturning length scales under diverse stratification

The role of biogeochemical cycling for the formation and preservation of varved sediments in Soppensee (Switzerland)

Calcite dissolution in two deep eutrophic lakes

Graph Chatbot

Chat with Graph Search

Calcite dissolution in two deep eutrophic lakes

The role of biogeochemical cycling for the formation and preservation of varved sediments in Soppensee (Switzerland)

Observations of mixing near the sides of a deep lake in winter

Fate of rising methane bubbles in stratified waters: How much methane reaches the atmosphere?

Is phosphorus retention in autochthonous lake sediments controlled by oxygen or phosphorus?

Distribution of denitrifying bacterial communities in the stratified water column and sediment-water interface in two freshwater lakes and the Baltic Sea

MERIS observations of phytoplankton blooms in a stratified eutrophic lake

Oxygen depletion in stratified lakes - why shallow and deep lakes react differently

Effects of climate change on deepwater oxygen and winter mixing in a deep lake (Lake Geneva): Comparing observational findings and modeling

Probability density of displacement and overturning length scales under diverse stratification