WebJan 1, 2024 · Specifically, the oxygen flux in global estuarine and coastal sediments has been reported to range from 4.8 to 168 mmol O 2 m − 2 d −1 ( Table 1) ( Boynton et al., 2024 ). High remineralization rates have been reported in mobile muds of large delta or … WebThe planar optodes were used to investigate 2-dimensional O2 dynamics in burrow systems inhabited by Hediste diversicolor. Natural burrows often deviated from the classic U-shape and changed over time. ... Extrapolated to natural densities in coastal sediments (600 m-2) the findings indicate that 88 % of the benthic O2 uptake is associated to ...
High Temporal Resolution Oxygen Imaging in Bioirrigated …
Web10 hours ago · Worsening marine hypoxia has had severe negative consequences for fish communities across the globe. While individual- and population-level impacts of deoxygenation have been identified, it is unknown how they interact to drive changes in food webs. To address this, we incorporated several major impacts of hypoxia, including … WebOct 24, 2024 · Consequently, organic carbon and reduced inorganic compounds associated with these sediments can be resuspended from anaerobic portions of the seabed and re … to put a lot of effort into something synonym
Organic Carbon Composition of Marine Sediments: Effect of …
WebWe estimated the net exchange of nitrogen and phosphorus species using core incubations under light and dark conditions in estuarine lakes that are the aquatic interface between the freshwater Everglades and marine Florida Bay. These lakes and adjacent shallow water Florida Bay environments are sites where the restoration of hydrological flows will likely … WebJul 18, 2005 · Oxygen was present throughout the day and night at 40 mm depth in the pore-water of L. dortmanna sediments, while the sediment of Z. marina sediments was always anoxic. Oxygen was present in the lacunae of both species, but changes were slow and gradual within L. dortmanna as a result of large lacunae and low metabolic rates per unit … WebTo understand carbon and oxygen dynamics in sediments with deep oxygen penetration, we investigated eight locations (160–318-m depth) throughout Lake Superior. Despite the 2–4 weight percent organic carbon content, oxygen penetrated into the sediment by 3.5 to . 12 cm at all locations. Such deep penetration is explained by to put a damper on things