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Variable sediment oxygen uptake in response to dynamic forcing
dynamic forcing Variable sediment oxygen
2014/4/16
Seiche-induced turbulence and the vertical distribution of dissolved oxygen above and within the sediment were
analyzed to evaluate the sediment oxygen uptake rate (JO2
), diffusive boundary layer t...
Hypolimnetic oxygen consumption by sediment-based reduced substances in former eutrophic lakes
Hypolimnetic oxygen consumption sediment-based reduced substances former eutrophic lakes
2014/4/16
We quantified the areal hypolimnetic mineralization rate (AHM; total areal hypolimnetic oxygen depletion including the formation of reduced substances) in two formerly eutrophic lakes based on 20 yr o...
Stable isotope fractionation during the methanogenic degradation of organic matter in the sediment of an acidic bog lake, Lake Grosse Fuchskuhle
Stable isotope fractionation during the methanogenic degradation of organic matter in the sediment an acidic bog lake Lake Grosse Fuchskuhle
2014/4/16
Lake Grosse Fuchskuhle is an acidic bog lake, which develops an anoxic hypolimnion during the summer season, so that sediment organic matter is degraded anaerobically to CH4and CO2. The d13 C values o...
Methanogenic pathway, 13 C isotope fractionation, and archaeal community composition in the sediment of two clear-water lakes of Amazonia
isotope fractionation archaeal community composition
2014/4/16
We studied the methanogenic pathway and archaeal community composition in the sediment of two clearwater lakes, Lake Batata and Lake Mussura, in Amazonia. We measured CH4 production and d13
C of CO2,...
Exchange between suspended and sinking particles in the northwest Mediterranean as inferred from the organic composition of in situ pump and sediment trap samples
suspended sinking particles northwest Mediterranean as inferred from the organic
2014/4/16
The extent to which sinking particles disaggregate and exchange with surrounding material affects the
efficiency of particulate organic carbon export to the deep sea. In 2003 and 2005, we compared th...
HANDS-ON OCEANOGRAPHY——Sorting Out Sediment Grain Size and Plastic Pollution
Beach erosion beach plastic pollution sediment particle size the buoyancy material density sand
2015/7/6
This activity familiarizes students with beach erosion, beach health, and the pervasive nature of plastic pollution. Students use measurements of sediment grain size and the buoyancy and density of ma...
Death by dissolution: Sediment saturation state as a mortality factor for juvenile bivalves
Sediment saturation state juvenile bivalves
2014/4/18
We show that death by dissolution is an important size-dependent mortality factor for juvenile bivalves.
Utilizing a new experimental design, we were able to replicate saturation states in sediments ...
Decadal diagenetic effects on d13 C and d15N studied in varved lake sediment
Decadal diagenetic effects varved lake sediment
2014/4/18
To assess the long-term (27 yr) effects of sediment aging on stable carbon and nitrogen isotope values (d13
C
and d15N), we used a collection of eight freeze cores of annually laminated (varved) lak...
Nitrogen cycling in a deep ocean margin sediment (Sagami Bay, Japan)
a deep ocean margin sediment Nitrogen cycling
2014/4/18
On the basis of in situ NO{
3 microprofiles and chamber incubations complemented by laboratory-based
assessments of anammox and denitrification we evaluate the nitrogen turnover of an ocean margin s...
Long-term 15N-nitrogen retention in tidal freshwater marsh sediment: Elucidating the microbial contribution
Long-term 15N-nitrogen retention Elucidating the microbial contribution
2014/4/17
The long-term retention of nitrogen in sediment of a tidal freshwater marsh in the Scheldt estuary (Belgium)
was investigated by an in situ 15N-labeling experiment. Sediment of an unvegetated creek b...
Ecological, landscape, and climatic regulation of sediment geochemistry in North American sockeye salmon nursery lakes: Insights for paleoecological salmon investigations
sediment geochemistry Ecological landscape climatic
2014/4/17
We used multiple linear regressions across a Northeast Pacific region 56-lake set to examine the influence of
sockeye salmon spawner densities and limnological, climatic, and watershed characteristic...
Storm-Generated Surface Waves and Sediment Resuspension in the East China and Yellow Seas
Surface Waves Yellow Seas East China Surface winds
2009/1/4
Surface winds derived from atmospheric pressure fields are used as input to a finite-depth wind-wave model to predict the sea state during a cold air frontal passage over the Yellow and East China Sea...
Sediment Resuspension and Mixing by Resonantly Generated Internal Solitary Waves
internal solitary waves Sediment Resuspension Resonantly
2008/11/24
The observation of internal solitary waves (ISWs) propagating upstream along a strongly stratified bottom layer on the California shelf is reported. An increased concentration of particulates in the w...
Sediment-mediated suppression of herbivory on coral reefs: Decreasing resilience to rising sea-levels and climate change?
Sediment-mediated suppression of herbivory coral reefs Decreasing resilience rising sea-levels climate change
2014/4/21
We describe a mechanistic basis for maintaining an alternative degraded stable state on coral reefs: sediment-laden algal turfs. Using remote underwater video cameras we quantified rates of herbivory ...
Sediment-Driven Downslope Flow in Submarine Canyons and Channels: Three-Dimensional Numerical Experiments
Sediment-Driven Downslope Flow Submarine Canyons Channels Three-Dimensional Numerical Experiments
2008/7/3
The role of submarine canyons and channels in sediment-driven downslope flow (sediment plumes) is examined, using a three-dimensional, rotational numerical model that couples the hydrodynamics and sed...