Sentences with phrase «changes in vegetation in»

Changes in vegetation in northern Alaska under scenarios of climate change, 2003 - 2100: Implications for climate feedbacks

Broad - scale changes in vegetation in general, and tree loss in particular, have pronounced effects on climate processes through biogeophysical mechanisms such as albedo, evapotranspiration (ET), and carbon dioxide exchange with the atmosphere [11].

Not exact matches

As ancient man surveyed his world, he found himself surrounded on all sides with movement and change, not only in fellow - humans, animals and birds, but in running water, scudding clouds, heavenly bodies traveling across the sky, rising dust - storms, the occasionally quaking earth and the vegetation which sprang up, flowered, fruited and died.

Nigerian climate changes from the north (Sokoto) to the south (Calabar), from Savannah to forest which is reflected in the vegetation and food found in each region.

In years of relatively low flow, changes in weir pool levels in conjunction with environmental water use can confer ecological benefits between the river and floodplain, such as nutrient exchange and wetting of fringing vegetatioIn years of relatively low flow, changes in weir pool levels in conjunction with environmental water use can confer ecological benefits between the river and floodplain, such as nutrient exchange and wetting of fringing vegetatioin weir pool levels in conjunction with environmental water use can confer ecological benefits between the river and floodplain, such as nutrient exchange and wetting of fringing vegetatioin conjunction with environmental water use can confer ecological benefits between the river and floodplain, such as nutrient exchange and wetting of fringing vegetation.

long cost / benefit analysis, which not only include loss of arable land but rather shifting it further towards pools (in my country, unless there is an awful change in sea currents, one could actually expect longer vegetation season)

The research team used satellite data to analyse changes in global vegetation cover from 2000 to 2015 and link these to changes in the surface energy balance.

Longer timescales bring changes in vegetation that also affect heat absorption, and the possibility that land and oceans begin to release CO2 rather than absorb it.

The maps show changes in vegetation, elevation, amount of rainfall and include scales to show distance.

Change in Amazon greenness from 2000 to 2012, measured as Normalized Difference Vegetation Index (NDVI).

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.

«It is of paramount importance to account for changes in Saharan vegetation and dust emissions when simulating past climate change.

Studies including Wang's earlier work in Africa have shown that even small changes in soil moisture in drylands could be significant enough to cause large changes in vegetation productivity.

However, the changes in climatic conditions arising from climate change could represent a far more important factor here: i.e. temperatures that increasingly exceed the optimum level for plant growth, like those experienced this summer, shifts in the vegetation periods, and more frequent droughts.

In separate surveys, Ulrich, Orians, and others have found that people respond strongly to landscapes with open, grassy vegetation, scattered stands of branchy trees, water, changes in elevation, winding trails, and brightly lit clearings, preferably partly obscured by foliage in the foregrounIn separate surveys, Ulrich, Orians, and others have found that people respond strongly to landscapes with open, grassy vegetation, scattered stands of branchy trees, water, changes in elevation, winding trails, and brightly lit clearings, preferably partly obscured by foliage in the foregrounin elevation, winding trails, and brightly lit clearings, preferably partly obscured by foliage in the foregrounin the foreground.

The results suggest that recent changes in global vegetation have had impacts on local climates that should be considered in the design of local mitigation and adaptation plans.

Dinets, who has traveled extensively on both sides of the Bering Strait, notes that in the past 20 years, the vegetation of the region has changed dramatically.

In addition to ignoring the long - term outlook, he says, many skeptics also fail to mention the potentially most harmful outcome of rising atmospheric CO2 on vegetation: climate change itself.

For their study, published Nov. 8, 2016, in Environmental Research Letters, the researchers first analyzed vegetation cover data for the months leading up to the storm to see if the Syrian conflict had really changed the land cover that much.

Vegetation change underway in boreal forests as a result of climate change creates a feedback loop that prompts more warming, scientists say

Modelling indicated that the main reason for the change was an increase in vegetation across Europe and Asia during that period (Nature Geoscience, DOI: 10.1038 / ngeo979).

«We found that vegetation change may have a greater impact on the amount of stream flow in the Sierra than the direct effects of climate warming,» said lead author Ryan Bart, a postdoctoral researcher at UCSB's Bren School of Environmental Science & Management.

«The results underscore the importance of accounting for changes in vegetation communities to accurately characterize future stream flow for the Sierra Nevada.»

So if you think of going in [a] warming direction of 2 degrees C compared to a cooling direction of 5 degrees C, one can say that we might be changing the Earth, you know, like 40 percent of the kind of change that went on between the Ice Age; and now are going back in time and so a 2 - degree change, which is about 4 degrees F on a global average, is going to be very significant in terms of change in the distribution of vegetation, change in the kind of climate zones in certain areas, wind patterns can change, so where rainfall happens is going to shift.

Pixel by pixel analysis of vegetation changes from week to week to give an early warning for the outbreaks of drought, hazardous fire conditions, or even when malaria may break out in Sub-Saharan Africa.

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

The Final Blow Graham and several of the other team members begin by ruling out possible causes, such as a change in vegetation to something less mammoth - friendly.

«Something subtler in the lead - up, such as increasing aridity and changes in vegetation, may be doing the damage.»

«Nobody really knows what the increases in CO2 are going to entail in terms of future changes in vegetation types,» co-author Mark Brenner of the University of Florida says.

It's reasonable to propose that their isolation protected them from human activity — but that idea is difficult to prove, and Graham suggests mainland vegetation may have changed in ways St. Paul's didn't.

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

To examine historical changes in growth and mortality rates of the vegetation there, the scientists looked at forest biomass, the cumulative result of past growth.

«Our results highlight the importance of the interactive effects of vegetation type, temperature and moisture in determining of the response of soil decomposition to climate change,» says lead author Julia Bradley - Cook, who conducted the study as part of her doctorate in Ecology and Evolutionary Biology at Dartmouth and who is now a Congressional Science Fellow.

Besides the increased emissions of N2O, the authors observed significant increases in the seasonal release of CO2 and CH4 as a result of only a mild temperature increase, and dug deeply into the reason behind the observed changes by detailed soil and vegetation measurements.

At least half of the slowdown is thought to be due to changes in land use, with more vegetation and possibly more buildings making the terrain rougher (Nature Geoscience, vol 3, p 756).

While the ECS factors in such «fast» feedback effects as changes in water vapor — water itself is a greenhouse gas, and saturates warm air better than cold — they argued that slow feedbacks, such as changes in ice sheets and vegetation, should also be considered.

Another change strongly suggests that as it aged Limusaurus gave up omnivory and switched to a plant - based diet: Larger individuals have swallowed stones that ostensibly helped the dinosaurs grind up vegetation and aided digestion, just as gizzard stones do in birds today.

Factoring in slow feedbacks from ice and vegetation changes would generate a significantly higher ECS, likely in the 4 to 6 C (7.2 to 10.8 F) range, the paper notes.

Dr Sue Ward, the Senior Research Associate for the project at Lancaster University, said: «Peat is one of the earth's most important stores of carbon, but one of the most vulnerable to changes in climate and changes in vegetation caused by both climate and land management.

Therefore mathematical modeling has the potential to be an extremely valuable tool, enabling prediction of how pattern vegetation will respond to changes in external conditions.»

«But measuring changes in vegetation is relatively easy and more affordable.

«Most climate models that incorporate vegetation are built on short - term observations, for example of photosynthesis, but they are used to predict long - term events,» said Bond - Lamberty, who works at the Joint Global Change Research Institute, a collaboration between PNNL and the University of Maryland in College Park, Md. «We need to understand forests in the long term, but forests change slowly and researchers don't live that long.&Change Research Institute, a collaboration between PNNL and the University of Maryland in College Park, Md. «We need to understand forests in the long term, but forests change slowly and researchers don't live that long.&change slowly and researchers don't live that long.»

The Manicouagan impact event might have contributed to the vegetation change at the Petrified Forest National Park in Arizona but the existing data are unable to prove a direct cause.

Complex as they may be, the activities and effects of consumers should be incorporated into global vegetation models in order to accurately predict the likely consequences of global change.

The event also caused huge changes in land vegetation, and while it remains a mystery why the dinosaurs survived this event, they went on to fill the vacancies left by the now extinct wildlife species, alongside early mammals and amphibians.

An example would be the indirect effects of sea stars on vegetation in the rocky intertidal zone caused by changes in mussel density via predation.

I was pleased upon reading Linda Geddes's piece on changes in vegetation around animal graves (10 April, p 18) to...

«There are real questions about whether we are beginning to see a shift in vegetation types driven by fire activity fueled by fire suppression and climate change.»

«You are probably getting a vegetation change due to that first fire that's going to cause more high - severity fires in the future and potentially the emergence of non-forest that could last for a long time.»

Researchers are drilling for clues to how dramatic changes in African rainfall and vegetation shaped our species.