Sentences with phrase «vegetation over»

About 20 % of the atmospheric CO2 molecules are exchanges between the atmosphere and oceans / vegetation over a year.

Reversal of degradation has the potential to not only reverse the 25 % of greenhouse gas emissions from this source — but to return another 25 % of current emissions to soil and vegetation over 40 years.

Forest - tundra environments are among the best templates to analyse the spatiotemporal development of forest vegetation over several hundred years in an area of sufficient but representative size, at least several tens of square kilometres.

* deposition of alkaline dust on tundra along roads, altering vegetation over a much larger area than the actual width of the road.

Students will examine satellite images of the school's changing surrounding vegetation over time using Google Earth.

«There are certainly more new species of plant to be discovered in Ogaden and in other parts of the world, but the existence of another unknown tree dominating the vegetation over such a large area is highly unlikely,» botanist David Mabberley of the Royal Botanic Gardens in Kew, England, writes in this week's Science.

These images allow scientists to measure changes in vegetation over time.

Indicating better soil conservation and stronger resistance under MCACs agro-ecological practices, the trends in agro-ecological resistance suggest that sustainable land management practices have been effective at building and conserving soil, water and vegetation over time.

Not exact matches

Under the agreement a perpetual restrictive covenant has been placed on the 121.7 ha which will require the area to be maintained and managed for its value as native vegetation with improvement of its assessed habitat score from 7/10 to 8/10 over a 20 - year period.

The Thing as it approached them spread outwards with prodigious rapidity as far as his eye could reach, filling the whole of space, while its feet brushed lightly over the thorny vegetation beside the torrent, its brow rose in the sky like a golden mist with the reddening sun behind it.

Their agricultural practices, learned over the centuries, conserved the soil and its vegetation for continued pastoral use.

The flows also have assisted the wetland vegetation to withstand the hot weather over summer.

Over 5,300 ML of Commonwealth environmental water was delivered to Hattah Lakes in spring 2015 to provide improved habitat and food resources for native fish and waterbirds, and support the ongoing reestablishment of water dependant vegetation.

Mass Audubon scientists are leading efforts to monitor the vegetation of salt marshes over time, particularly where the Phragmites are growing.

Last weekend, the river was taken over by vegetation, caused by a heavy storm, which created a compacted layer over the river.

This helps students understand the climatic differences of moist air traveling over a mountain range and creating lush vegetation on one side and a drier climate on the leeward side.

Landfills covered by vegetation are no good, as are fills that have been built over.

With global climate models projecting further drying over the Amazon in the future, the potential loss of vegetation and the associated loss of carbon storage may speed up global climate change.

While the decline of green vegetation was small, the area affected was not: 2.1 million square miles (5.4 million square kilometers), equivalent to over half the area of the continental United States.

Over much of south - east Australia, where the drought has hit hardest, less that 10 per cent of the original vegetation remains.

At the same time, vegetation across the continent that had been revived by rains over the past two years is now completely dried out.

Decomposing submerged vegetation burps methane — a greenhouse gas which traps 25 times as much heat as CO2 over a century.

Already projects are being designed to store carbon over decades in newly planted native vegetation, to restore connectivity and biodiversity in large - scale protected areas, and to train workers in restoring and maintaining wetlands and removing invasive species.

The study also concludes that, over a 15 - year period, cutting the black carbon produced by burning fossil fuels, vegetation, dung and other sources could reduce the warming the Earth has experienced since the Industrial Revolution — about 0.8 degrees Celsius — by 17 to 23 percent.

So you can actually find this exact location and see how it's changed over time — how the vegetation has changed, how the landscape has changed.»

Not everything from St. Paul Island is muddy: The team collected vegetation to compare it with ancient pollen and other clues to the environment stored in the sediment cores to learn how the island has changed over time

The work coordinated by University of Leeds (UK) researcher Catherine Scott was also based on years of analyses and survey over the functioning of tropical and temperate forests, the gases emitted by vegetation, and their impact on climate regulation.

An analysis of sediments deposited over the past 4600 years provides a record of the vegetation and soil nutrient patterns and shifts in hydrology, revealing some of the processes that have hitherto remained obscure.

Using information from pre-historic climate archives, Zeebe calculated how slow climate feedbacks (land ice, vegetation, etc.) and climate sensitivity may evolve over time.

Where Pisaster had been removed, the mussels took over, crowding out other species and eating all the vegetation, until little more than a dark carpet of mussels and barnacles remained.

In this study, researchers examined vegetation change as a function of wildfire disturbance and climate change over a 100 - year period.

To make the best contribution to flood mitigation it is important they are used in locations with complex bankside vegetation to slow water flowing over the floodplain.»

«By understanding the patterns of the vegetation and termite mounds over different moisture zones, we can project how the landscape might change with climate change,» said Greg Asner, a scientist at Carnegie.

The archipelago stretches over 1200 kilometres of ocean, so the climate ranges from near - Arctic to almost subtropical, with a corresponding range of vegetation — from tundra in the north to dense forest in the south.

The researchers are now playing taped calls over speakers in the two habitats to see whether vegetation also affects the dialects of the macaques.

Drones can amass vegetation data over seasons or years for monitoring habitat restoration efforts, monitoring rare and threatened plant populations, surveying agriculture, and measuring carbon storage.

«The study provides more realistic modeling estimates of how much vegetation change will occur over the 21st century and will allow better predictions of future climate change,» she said.

Deeming says fossils of dinosaurs like Oviraptor apparently «brooding» eggs are more likely to be dinosaurs squatting over vegetation on a nest mound to protect it from predators.

«I am slowly replanting my land with original vegetation and I have planted over 2000 trees, so far,» he says.

The results may help to explain discrepancies between observations and theories about how volatile organic compounds produced by vegetation are converted into atmospheric aerosol — especially over forested regions.

, who has used the Neotoma database to explore vegetation change over the past 20,000 years on a continental and global scale.

The preliminary data supported Mundorff's hypothesis that buried bodies affected the vegetation growing over them.

The weakening monsoons caused further desertification and vegetation loss, promoting a feedback loop which eventually spread over the entirety of the modern Sahara.

«The Illinois State Museum is deeply respected in the scientific community for the expertise of its curators and for its irreplaceable collection of archaeological, cultural, and paleontological artifacts,» says paleoecologist Jack Williams of the University of Wisconsin, Madison, who has used the Neotoma database to explore vegetation change over the past 20,000 years on a continental and global scale.

This study highlights the key role of vegetation in controlling future terrestrial hydrologic response and emphasizes that the continental carbon and water cycles are intimately coupled over land and must be studied as an interconnected system.

Over the past two decades, researchers have seen changes in the vegetation around the tundra.

The sawtooth pattern in the graphic shows just that in careful CO2 measurements over the past half - century or so: it builds during winter when deciduous trees are leafless, then declines in summer when the trees and vegetation take in the CO2 before the process starts building again the next fall.

We recently extended this record to approximately 120,000 years BP in order to track vegetation change over a full glacial cycle at millennial to orbital timescales.

GEDI's vegetation measurements will help close a critical gap in our current understanding of how carbon is stored and emitted over time by forests and other ecosystems.

Over the long term, climate also determines the distribution of vegetation and possible fuels (Power et al. 2007; Marlon et al. 2008).