Anoxic in a sentence

Hydrogen sulfide emissions A severe anoxic event at the end of the Permian would have allowed sulfate-reducing bacteria to thrive, causing the production of large amounts of hydrogen sulfide in the anoxic ocean.

To endure through anoxic conditions, such as winter periods trapped beneath ice or within anoxic mud at the bottom of ponds, turtles utilize two general physiological mechanisms.

Researchers assessed the of three anoxic basins—the Black Sea between Europe and Asia, Cariaco Basin off the coast of Venezuela, and Orca Basin in the Gulf of Mexico—and studied how sunken biomass would change these basins' geochemistries.

Anoxic regeneration of NAD + is only an effective means of energy production during short, intense exercise in vertebrates, for a period ranging from 10 seconds to 2 minutes during a maximal effort in humans.

As a consequence, this environment is completely anoxic and, due to the activity of sulfate reducers, contains sulphide at a concentration of 2.9 mM.

Being isolated from the oceans, such lakes may have been stagnant and anoxic at depth, much like today's Black Sea ; a sufficient input of iron could provide the necessary conditions for BIF formation.

Black shales which form in anoxic conditions contain reduced free carbon along with ferrous iron (Fe 2+ ) and sulfur (S 2− ).

Hydrochemistry Because of the anoxic water at depth, organic matter, including anthropogenic artifacts such as boat hulls, are well preserved.

In many places around the world, dark anoxic shales were formed during this interval.

Many species of bacteria can transform arsenite to arsenate in anoxic conditions by using arsenite as an electron donor. citation This is a useful method in ground water remediation.

Nutrients may become concentrated in an anoxic zone and may only be made available again during autumn turn-over or in conditions of turbulent flow.

Oyster reefs remove nitrogen from the water column and filter out suspended solids, subsequently reducing the likelihood or extent of harmful algal blooms or anoxic conditions.

Subsurface productivity is limited by nutrient availability, as the anoxic bottom waters act as a sink for reduced nitrate, in the form of ammonia.

Such seas can experience a wide range of chemistries; high rates of evaporation could concentrate iron ions, and a periodic lack of circulation could allow anoxic bottom water to form.

The basal plate is used to scrape smaller organisms off of the grains of sand that make up their anoxic seabed mud habitat.

The hydrochemical environment shifts from oxygenated to anoxic, as bacterial decomposition of sunken biomass utilizes all of the free oxygen.

The oxygen then combined with dissolved iron in Earth's oceans to form insoluble iron oxides, which precipitated out, forming a thin layer on the ocean floor, which may have been anoxic mud (forming shale and chert).

These formations may have resulted from carcass burial in an anoxic environment with minimal bacteria, thus slowing decomposition.

This process requires a large amount of energy and anoxic conditions.

Under anoxic circumstances, however, organic material cannot decay and leaves a dark sediment, rich in organic material.