Sentences with phrase «of nitrogen cycling»

Multiple metrics of nitrogen cycling were notably different with moss mortality and had significant implications for soil fertility.

Nitrogen has been wrested from the sky, turned into plant food and, ultimately, more people — a doubling of the amount of nitrogen cycling through planetary systems.

On the other hand the thirteenth rivet popped from a wing, or the extinction of a key species in the cycling of nitrogen, for example could lead to a serious malfunctioning of the nitrogen cycle.

The finding «changes everything» about scientists» understanding of the nitrogen cycle, says biological oceanographer Tracy Villareal of the University of Texas, Austin.

Dr Pinto says: «The discovery of a single microorganism capable of full nitrification will have a significant impact on our understanding of the nitrogen cycle and on efforts to manage nitrogen pollution.

A technique to investigate the nitrogen cycle of streams, which was first developed at the Arctic LTER site, transformed scientists» understanding of the nitrogen cycle in relation to food webs in flowing waters.

«This changes the way we think of the nitrogen cycle and, more generally, anaerobic metabolism in the ocean, and suggests that both could respond to climate change in ways that challenge our current understanding.»

«The previous understanding of the nitrogen cycle was that nitrogen was lost from the ocean only in three regions where oxygen is scarce.

Make sure to have a feeding cycle exhibit and a visual representation of the nitrogen cycle on display during spring preparation months.

Walking customers through a visual representation of the nitrogen cycle can be very helpful.

Some plants have coevolved with nitrogen - fixing bacteria, [7] making plants an important part of the nitrogen cycle.

Who will be around when governments start talks on a global framework agreement on protection of the nitrogen cycle?

Nitrogen's cooling effects have prompted some observers to say that human acceleration of the nitrogen cycle may be beneficial.

It is also worth noting that unlike many of humanity's other effects on the planet, the remaking of the nitrogen cycle was deliberate.

Working with the Scientific Committee on Problems of the Environment, Susan co-authored the Emerging Challenges section of the United Nations Environment Programme's Global Environmental Outlook (GEO) Yearbook for 2003, which addressed the alteration of the nitrogen cycle and over-fishing.

Not exact matches

The parable of the rivet popper is particularly applicable to the threat of human activity to the cycles of nature such as the nitrogen cycle or the carbon cycle, which are part of the life - support systems of nature.

The invention of synthetic fertilizer, where nitrogen is taken from an inert chemical form in the air and turned into ammonia, has had a profound effect on nitrogen cycling.

Global warming, from the release of carbon dioxide and perturbations to the nitrogen cycle from fertilizers

The findings suggest that human - caused acceleration of global nitrogen and phosphorus cycles have boosted nitrogen removal processes in small to medium - size lakes.

New research from the University of East Anglia shows that rising ocean temperatures will upset natural cycles of carbon dioxide, nitrogen and phosphorus.

Rising ocean temperatures will upset natural cycles of carbon dioxide, nitrogen and phosphorus.

«Understanding nitrogen cycling is crucial to understanding the productivity of the oceans as well as the global climate,» he said.

Gaseous ammonia is a natural part of Earth's nitrogen cycle, but excess ammonia is harmful to plants and reduces air and water quality.

The lack of oxygen will also affect other elemental cycles on the planet, such as nitrogen and carbon.

Scientists propose a list of planetary boundaries for human impacts ranging from biodiversity loss to the global nitrogen cycle

«The presence of nitrogen - bearing compounds in Martian soil means the existence of a source of biochemically accessible nitrogen, and suggest that it could be a nitrogen cycle sometime along the evolution of Mars as a planet,» he says.

Specifically, Blomqvist and his colleagues argue that six of the 10 boundaries — land use, biodiversity, nitrogen cycle, freshwater use, aerosol and chemical pollution — do not have a hard limit at planet - scale physical thresholds that, if transgressed, would tip them into functioning differently.

Human - made nitrogen now affects even isolated waterways, presaging a world where humanity drives the natural cycle of this vital nutrient

This could provide valuable insights into the deep - Earth cycling of carbon, nitrogen and water.

The team took a close look at a 2012 - 2013 drought and flood cycle that affected much of the Midwestern U.S., leading to a nitrogen spike in surface waters.

The new study, by researchers at the University of Vienna and the International Institute of Applied System Analysis explores the role of microbial cheaters for soil carbon and nitrogen cycling using a computer model.

«Microbes involved in the nitrogen cycle, which are still active today, could have played a major role in calcite precipitation because of their ability to increase the pH,» explains Dr Stinnesbeck.

Researchers in Hawaii found that guppies released in the 1920s drove down native fish populations, perhaps by competing with them for food and living space, and had likely changed the cycle of nutrients in water: Guppy - rich areas showed increased levels of dissolved nitrogen — from ammonium in fish urine and gill excretions — which, in turn, stimulated algae growth.

Using sediment gathered from the ocean floor in different areas of the world, the researchers were able to confirm that as the ice sheets started melting and the climate warmed up at the end of the last ice age, 18,000 years ago, the marine nitrogen cycle started to accelerate.

Given the current dramatic rate of change in the ocean nitrogen cycle the researchers are not sure how long it will take for marine ecosystems to adapt.

The nitrogen cycle is a key component of the global ocean metabolism.

By using a combination of crop growth, hydrological, carbon and nitrogen cycle models, researchers found that the estimated land suitable for bioenergy grasses — particularly Miscanthus, the most productive bioenergy crop — is limited, despite its relatively high biomass productivity and low water consumption per unit of ethanol.

The results of their study confirm that oceans are good at balancing the nitrogen cycle on a global scale.

«We know that biochar impacts the soil nitrogen cycle, and that's how it reduces nitrous oxide,» said Masiello, a professor of Earth, environmental and planetary science.

A McGill - led international research team has now completed the first global study of changes that occurred in a crucial component of ocean chemistry, the nitrogen cycle, at the end of the last ice age.

A reservoir that's likely several miles deep in some places, the solid nitrogen is warmed by Pluto's modest internal heat, becomes buoyant and rises up in great blobs — think of a lava lamp — before cooling off and sinking again to renew the cycle.

In environmental biotechnology, new concepts are currently being developed to employ microalgae to recover phosphor and nitrogen from sewage and reintroduce them into the nutrient cycle by means of organic fertilizers.

Farmers have always interfered with the cycle, because nitrogen availability often limits the fertility of soils.

Rockström tentatively sets the safe level for human additions to the nitrogen cycle at about 35 million tonnes a year, one - quarter of the current total.

Since changes in the soil nitrogen cycle are driven by microbes, could bacteria associated with invasive species not only be responsible for the observed changes in soil nutrient concentrations, but also for enabling the continued growth and persistence of the invader species?

Because nitrogen and carbon cycles are tightly coupled, the team's discovery might also alter projections of carbon storage or release from arctic ecosystems as the climate warms.

And the cycle of wet and dry phases fosters the growth of nitrogen - fixing cyanobacteria in the terraces, providing the plants with a naturally occurring source of usable nitrogen.

«More nitrogen has to come from somewhere to resupply both the nitrogen ice that is moving around Pluto's surface in seasonal cycles, and the nitrogen that is escaping off the top of the atmosphere as the result of heating by ultraviolet light from the Sun,» said Singer.

There is also pollution — the soup of toxic chemicals we live in, the fact that we have distorted the nitrogen cycle with our wasteful overuse of synthetic fertilizers.

Reactions in and on sea - salt aerosol particles may have a strong influence on oxidation processes in the marine boundary layer through the production of halogen radicals, and reactions on mineral aerosols may significantly affect the cycles of nitrogen, sulfur, and atmospheric oxidants.