The cycling of metal(loid)s at the sediment–water interface (SWI) was evaluated two selected sites (VN1 and VN3) in an active fish farm Grado Lagoon (Northern Adriatic, Italy). In situ experiments using a transparent benthic chamber collection short sediment cores were performed, to investigate behavior solid (sediments) dissolved (porewaters) phases. Total labile concentration also determined ...

In the last decade, the aquatic eddy correlation (EC) technique has proven to be a powerful approach for non-invasive measurements of oxygen fluxes across the sediment water interface. Fundamental to the EC approach is the correlation of turbulent velocity and oxygen concentration fluctuations measured with high frequencies in the same sampling volume. Oxygen concentrations are commonly measure...

Oxygen minimum zones (OMZs) impinging on continental margins present sharp gradients ideal for testing environmental factors thought to influence C cycling and other benthic processes, and for identifying the roles that biota play in these processes. Here we introduce the objectives and initial results of a multinational research program designed to address the influences of water depth, the OM...

The aim of the present work was to test influence juvenile oyster culture on benthic-pelagic coupling in French Mediterranean Thau Lagoon. Although period growth induces introduction millions oysters lagoon over a short duration, effects water-column and benthic ecosystem are poorly known. Using multiple ecological approach, water column parameters, sedimentation rates, sediment characteristics...

Based on noninvasive eddy correlation measurements at a marine and a freshwater site, this study documents the control that current flow and light have on sediment–water oxygen fluxes in permeable sediments. The marine sediment was exposed to tidal-driven current and light, and the oxygen flux varied from night to day between 229 and 78 mmol m22 d21. A fitting model, assuming a linear increase ...

A micropaleontological study has been carried out on the samples collected from the Sarv Abad section, the oldest and only known Jurassic sedimentary rocks cropping out in the Moghan area. Studied sequence consists of carbonates bounded at both base and top by clastic deposits. Studied carbonate deposits provide an assemblage of benthic foraminifera as well as calcareous algae. The stratigraphi...

Based on oxygen (O2), pH, calcium (Ca2+), and carbonate (CO 22 3 ) sediment pore-water concentration profiles, we compare the benthic dissolution of autochthonous calcite in oligotrophic Lake Lucerne and eutrophic Lake Sempach. Despite their difference in trophic state, the two lakes have similar benthic O2 regimes because L. Sempach is artificially oxygenated. This peculiarity enabled the stud...

The present study was conducted to examine the impact of cage aquaculture on benthic communities in coastal areas (depth 25 to 50 m) from fish farming operations located along the southeastern Black Sea (Ordu-Perşembe, Trabzon-Yomra and Rize central). Sampling was conducted seasonally from April 2007 to 2009. Sediment samples were taken using Ekman Grab (box core- 0.04 m2). Temperature, salinit...

Coastal sediments are major contributors to global carbon (C) mineralization and nutrient cycling tightly linked processes in the pelagic environment. In this study, we aimed investigate regulating potential of quantity quality planktonic organic matter (OM) deposition on benthic metabolism, with a particular focus nitrogen (N) processes. We simulated inputs spring (C : N 10.9) summer 5.6) plan...

Abstract. Benthic alkalinity production is often suggested as a major driver of net carbon sequestration in continental shelf ecosystems. However, information on and direct measurements benthic fluxes are limited especially challenging when biological dynamic physical forcing causes surficial sediments to be vigorously irrigated. To address this shortcoming, we quantified sediment–water exchang...