Sentences with phrase «oxygen depletion»

"Oxygen depletion" means a decrease or reduction in the amount of oxygen available in a certain area or environment. Full definition
The ocean will have oxygen holes (large areas of oxygen depletion).
However, when tofu whey is discarded as an untreated waste, it creates environmental pollution as the protein and soluble sugars in the whey could contribute to oxygen depletion in the waterways.
As far as being concerned about oxygen depletion, I'm not.
The influence of climate change was evident in areas with either extreme incidents of oxygen depletion or longer - than - normal trends of low oxygen levels.
The gases could have also driven acidification and oxygen depletion in the oceans.
Ocean oxygen depletion affects ocean and land life profoundly.
Homes with permanently installed non-electric, non-vented fireplaces or space heaters may be eligible, provided the buyer signs a «hold harmless» agreement and the unit meets applicable codes and has an approved oxygen depletion sensor.
Some food dispensed in aquaculture operations — especially open water cages — is inevitably not consumed and together with faeces the nutrients released into the surrounding water can cause oxygen depletion and potentially lead to algal blooms.
Although oxygen depletion occurs naturally in some parts of the ocean, such as fjords and deep basins, the Gulf of Mexico's dead zone is caused by humans.
Organic wastes such as sewage and farm waste impose high oxygen demands on the receiving water leading to oxygen depletion with potentially severe impacts on the whole eco-system.
However, it remains a major scientific challenge to model and project the changes of the magnitude and intensity of subsurface oxygen depletion because it depends on changes in ocean circulation, rates of de-nitrification, and nutrient runoff from land, and because global data coverage for chemical and biological parameters remains poor.
On the basis of this analysis, we can determine that the many nutrients from the land are the main cause of the widespread oxygen depletion,» says Professor Jacob Carstensen, Department of Bioscience, Aarhus University.
Measurements of oxygen depletion weeks after the spill detected as much as a 30 percent drop in the Gulf of Mexico seawater.
Over the short term, the higher temperatures slow the rate of ocean circulation, exacerbating regional oxygen depletion.
The researchers produced a global model of DVM depths and oxygen depletion by mining acoustic oceanic data collected by 389 American and British research cruises between 1990 and 2011.
«Concentrations of oil in this deep plume are so low that we don't see oxygen depletion,» he explains.
Both factors could potentially mean fewer dead phytoplankton reaching the bottom, leading eventually to less oxygen depletion.
«We know that oxygen depletion also affects the nitrogen cycle and favors the production of nitrous oxide,» says Damian L. Arévalo - Martínez.
Terrestrial predators can modulate the energy used for prey capture to maximize efficiency, but diving animals face the conflicting metabolic demands of energy intake and the minimization of oxygen depletion during a breath hold.
Feed to pond fish daily when water temperature is at or above 50 F. To avoid oxygen depletion of water, never overfeed.
The organisms in the sediments (clams, scallops, etc.) die — and they further lead to more oxygen depletion.
Extreme events of ocean oxygen depletion leading to anoxia are thought to be prime candidates for explaining some of the large extinction events in Earth history including the largest such event at the end of the Permian 250 million years ago.
Further warming will likely cause the disappearance of Arctic summer sea ice, further oxygen depletion and the release of Earth - warming methane trapped in the Arctic seabed.
Substantial reductions in fossil - fuel use over the next few generations are needed if extensive ocean oxygen depletion for thousands of years is to be avoided.
«Long - Term Ocean Oxygen Depletion in Response to Carbon Dioxide Emissions from Fossil Fuels.»
Oxygen depletion occurs when the oxygen uptake at the bottom exceeds the amount of oxygen brought to the deeper water layers via currents and mixing by the wind.
Oxygen depletion on the seabed has a negative impact on the entire ecosystem.
If you look at the last 65 million years, in the so - called Cenozoic era, I don't think there are any examples of globally widespread subsurface oxygen depletion.
The findings are reported in a paper «Long - term ocean oxygen depletion in response to carbon dioxide emissions from fossil fuels» published on - line in the scientific journal Nature Geoscience.
«What complicates this story is that if these animals are responsible for a chunk of oxygen depletion in general, then a change in their habits might have a feedback in terms of oxygen levels in other parts of the deeper ocean.»
According to the company's plan, waste would be treated at a new facility near the mill using a system that would meet all federal environmental standards for suspended solids and oxygen depletion.
There's an oxygen depletion sensor that turns off the flame if oxygen levels decrease.
An oxygen depletion sensor shuts the pilot off for safety, so the oxygen never drops below a safe level.
During the last century, the areas of oxygen depletion have increased drastically from approximately 5,000 km2 in around 1900 to the present day, where they extend to 60,000 km2 — or about one and a half times the total area of Denmark.
After several years of discussions, researchers from Aarhus University (Denmark), Lund University (Sweden) and Stockholm University (Sweden) have determined that nutrients from the land are the main cause of widespread areas of oxygen depletion.
«Oxygen depletion in the Baltic Sea is ten times worse than a century ago.»
«What we're saying here is that animals that migrate during the day are a big source of oxygen depletion.
They then chemically analyzed samples from DVM - event locations to create a model that could correlate DVM depth with oxygen depletion.
«Microbes eat [hydrocarbons] like we eat at a buffet: they like some compounds better than others,» explained marine chemist Chris Reddy of the Woods Hole Oceanographic Institution during an August 19 press conference announcing the existence of such oil plumes — though their findings also published in Science suggested microbes were consuming the plume slowly in late June due to low levels of oxygen depletion.
Nitrogen - rich fertiliser runoff is the primary cause of oxygen depletion in oceans, lakes and rivers, leading to aquatic «dead zones.»
«Our work shows that if we continue on our present course, there is a good chance that oxygen depletion will exacerbate the challenges marine organisms are already facing,» co-author Thomas Algeo added.
«The browning of these systems leads to oxygen depletion and cooler water at the bottom of the ponds, which can have a major impact on the microbial activity responsible for the production and consumption of greenhouse gases, particularly the production of methane, a powerful greenhouse gas.»
Deep - sea oil exploration will probably release future spills, Solomon says, and global warming could destabilize large undersea deposits of frozen methane, leading to local ocean acidification or oxygen depletion (SN 7/31/2010).
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