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Interannual variation of the isotopic composition of sedimenting organic carbon and nitrogen in Lake Lugano: A long-term sediment trap study
Interannual variation isotopic composition sedimenting organic carbon and nitrogen Lake Lugano long-term sediment trap study
2014/5/14
We examined the evolution of δ13C and δ15N of sedimenting particulate organic matter (SPOM) in response to changes in primary productivity, nutrient loading, and plankton dynamics in Lake Lugano betwe...
Breathing sediments: The control of diffusive transport across the sediment-water interface by periodic boundary-layer turbulence
Breathing sediments diffusive transport sediment-water interface periodic boundary-layer turbulence
2014/5/22
We performed combined in situ measurements of bottom boundary-layer turbulence and of diffusive oxygen fluxes at the sediment-water interface in a medium-sized mesotrophic lake. The turbulence was dri...
Benthic algae control sediment–water column fluxes of organic and inorganic nitrogen compounds in a temperate lagoon
Benthic algae control sediment– water column fluxes organic and inorganic nitrogen compounds temperate lagoon
2014/5/22
Coastal lagoons are a common land-margin feature worldwide and function as an important filter for nutrients entering from the watershed. The shallow nature of lagoons leads to dominance by benthic au...
The resuspension of sediment by waves or currents is a major cause of turbidity in many shallow waters. Here we show that bottom-feeding fish greatly facilitate this process by reducing the erosion re...
The role of submerged macrophyte beds in phosphorus and sediment accumulation in Lake Memphremagog, Quebec, Canada
submerged macrophyte beds phosphorus and sediment accumulation Lake Memphremagog Quebec Canada
2014/5/21
The relationships between long-term (~115-year) phosphorus and sediment accumulation and submerged macrophyte biomass were determined both within a submerged macrophyte bed and among beds in Lake Memp...
Effect of the brittle star Amphiura filiformis (Amphiuridae, Echinodermata) on oxygen flux into the sediment
brittle star Amphiura filiformis oxygen flux sediment
2014/5/21
O2 plays a key role in early sedimentary diagenetic processes, but the effect of most macrofaunal species on the pathways and rates of supply of O2 into the seabed are not well known. We investigated ...
Distribution of viruses and bacteria in relation to diagenetic activity in an estuarine sediment
viruses bacteria sediment
2014/5/21
The distribution of viruses and bacteria was investigated in relation to bacterial sulfate reduction and total respiration (production of dissolved inorganic carbon, [DIC]) in a coastal sediment. Vira...
Viability of invertebrate diapausing eggs collected from residual ballast sediment
invertebrate diapausing eggs residual ballast sediment
2014/5/21
Natural or anthropogenic movement of sediments may be an important vector for the dispersal of invertebrate
resting stages between water bodies. Here we record the presence of invertebrate diapausing...
Inorganic nitrogen transformations in the bed of the Shingobee River, Minnesota, USA: Integrating hydrologic and biological processes using sediment perfusion cores
Inorganic nitrogen transformations the bed of the Shingobee River Minnesota USA Integrating hydrologic biological processes sediment perfusion cores
2014/5/20
Inorganic N transformations were examined in streambed sediments from the Shingobee River using sediment perfusion cores. The experimental design simulated groundwater-stream water mixing within sedim...
Properties of intertidal marsh sediment mobilized by rainfall
intertidal marsh sediment mobilized rainfall
2014/5/20
We conducted sprinkler irrigation experiments on a low-tide marsh to investigate the effects of rainfall on the redistribution of organic matter (OM) and nutrients in the intertidal zone. We irrigated...
Flume observations of enhanced fine-particle deposition to permeable sediment beds
Flume observations of enhanced fine-particle deposition to permeable sediment beds
2014/5/20
Predictions of the deposition rate of fine particles are integral to the study of the transport of many constituents, including contaminants and organic matter. Generally, fine-particle deposition rat...
A model of sediment transport over an intertidal transect, comparing the influences of biological and physical factors
A model of sediment transport over intertidal transect, comparing the influences biological and physical factors
2014/5/27
This paper compares modeled biotic and physical effects on intertidal sediment transport, using parameterizations that are based on laboratory and field experiments. A one-dimensional model of an inte...
The role of small-scale sediment topography for oxygen flux across the diffusive boundary layer
The role of small-scale sediment topography oxygen flux across diffusive boundary layer
2014/5/27
At the scale of centimeters or millimeters, marine sediment surfaces are sculptured into complex three-dimensional landscapes. A detailed study of fluxes through the diffusive boundary layer (DBL) the...
Sediment geochemical records of eutrophication in the mesohaline Chesapeake Bay
Sediment geochemical records eutrophication mesohaline Chesapeake Bay
2014/5/27
An organic geochemical analysis of sediments in three cores from the mesohaline Chesapeake Bay was carried out to reconstruct the progression of eutrophication and anoxia/hypoxia over the past five ce...
Iron-sulfur-phosphorus cycling in the sediments of a shallow coastal bay: Implications for sediment nutrient release and benthic macroalgal blooms
Iron-sulfur-phosphorus cycling in the sediments shallow coastal bay:sediment nutrient release benthic macroalgal blooms
2014/5/26
We conducted a study to determine the seasonal relationship between iron, sulfur, and phosphorus in the upper sediments and pore waters of a shallow intercoastal bay. From April 1999 to September 2000...