Detection of low bottom water oxygen concentrations in the North Sea; implications for monitoring and assessment of ecosystem health
Abstract. This paper presents new results from high temporal resolution observations over two years (2007 and 2008) from instrumented moorings deployed in the central North Sea, at the Oyster Grounds…
Relationships between suspended particulate material, light attenuation and Secchi depth in UK marine waters
Nitrogen fluxes through the lower estuary of the river Great Ouse, England: the role of the bottom sediments
The fate of nitrogen (N) in the bottom sediments of the upper Great Ouse estuary, England, was examined over the course of a year. The sedirnents were consistent sinks for NO3from the overlying river…
Seasonal organic mineralisation and denitrification in intertidal sediments and their relationship to the abundance of Enteromorpha sp. and Ulva sp.
Sedimentary organic matter mineralisation, nitrogen loss, and nutrient exchange were measured seasonally in areas of both high and low Enteromorpha sp.
Smartbuoy: A marine environmental monitoring buoy with a difference
Sedimentary and water column processes in the Oyster Grounds: a potentially hypoxic region of the North Sea.
Impact of resuspension of cohesive sediments at the Oyster Grounds (North Sea) on nutrient exchange across the sediment–water interface
Benthic-pelagic exchange processes are recognised as important nutrient sources in coastal areas, however, the relative impact of diffusion, resuspension and other processes such as bioturbation and…
Impact of long-term benthic trawl disturbance on sediment sorting and biogeochemistry in the southern North Sea
- M. Trimmer, J. Petersen, D. Sivyer, C. Mills, E. Young, E. R. Parker
- Environmental Science
- 15 August 2005
Biogeochemical processes in the upper layers of sediment, both oxic and suboxic, seemed unaffected by trawling in the long- term, but in deeper anoxic sediment, mineralisation via sulphate reduction may be stimulated by the extra disturbance, at least in areas where tidal energy is slight.
Environmental controls on phytoplankton community composition in the Thames plume, U.K.
Seasonal benthic organic matter mineralisation measured by oxygen uptake and denitrification along a transect of the inner and outer River Thames estuary, UK
Seasonal measurements of organic matter mineralisation by oxygen uptake and denitrification were carried out from July 1996 to March 1998 along a -200 km transect of the River Thames estuary, UK, finding clear seasonality and highest rates of oxygen uptake at the muddy sites, but lower rates and non-temperature-dependent oxygen uptake in the sandier sites.