Sentences with phrase «how vegetation»
University of Virginia terrestrial ecologist Howie Epstein has won a $ 607,000 NASA grant to use Earth - observing satellite data to assess how vegetation diversity is changing in the Arctic tundra.
https://phys.org/
The question of how vegetation will change its distribution at large scales and the consequent changes in absorbed radiation is quantified through remote sensing studies.
Indeed however, as your post nicely illuminates for our readers, there are a more general set of questions dealing with the complex issue of how vegetation will respond not just to CO2 changes, but to the climate changes themselves that may result from the associated radiative forcing.
However, paleoclimate data are used as a foundation for climate scientists by providing crucial information such as rates of past climate change and how vegetation and animal populations responded to the change.
Turn on the image comparison tool to see how vegetation and chlorophyll change between June and December.
Vegetation - Climate Interaction: How Vegetation Makes The Global Environment, Springer Praxis Books.
As you glide among the forest, see how the vegetation changes with the elevation level.
Specifically, he is interested in how vegetation and agriculture drive the apportionment of available water and energy and are thus a primary control on hydrologic processes.
Because different species may leave distinct chemical signatures in the soil that could in turn affect how vegetation grew at the site, it only made sense to test the technology on humans.
«The fairy circles have drawn so much attention, people haven't paid attention to how the vegetation looks between the circles,» says Tarnita.
Zedler's contractors planted all three tracts with similar species to see how the vegetation would absorb and clean water runoff during storms.
A botany researcher at New Zealand's University of Otago and colleagues have developed a new system to map the world's «biomes» — large - scale vegetation formations — that will provide an objective method for monitoring how vegetation reacts as climate changes.
Because CO2 can aid the growth of plants — and close down stomata as well to protect against O3 invasion — it was unclear how vegetation worldwide would respond to such an increase in emissions of both CO2 and O3.
«How vegetation competes for rainfall in dry regions.»
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.»
The findings of a U.S. Forest Service study shed light on how vegetation responds to severe wildfire and whether further disturbances from logging affect regrowth.
Not exact matches
Many interacting factors influence whether and how wildfires will spread, including fire intensity, wind intensity, the quantity of firebrands that land on structures, the heat that impacts structures, how structures ignite, the distance between structures and vegetation, and the distance between structures.
This one seems really easy fungus lichen grass vegetation were present but scrubs and trees developed at a later stage would be how i would read that.Dont see any confusion there either.brentnz
«Better knowledge will also provide an understanding how pressures such as invasive species, polluted runoff and reduced vegetation cover affect the ongoing health of water - dependent ecosystems in the Basin.
USDA also released a Carbon Management Evaluation Tool (COMET - FARM) to help producers calculate how much carbon their land's soil and vegetation can remove from the atmosphere.
The researchers tested how future precipitation and temperature projections would interact with aspects of the land surface such as vegetation and soil type to affect groundwater recharge during two time intervals: 2021 - 2050 and 2071 - 2100.
The simulations suggested that the indirect effects of increased CO2 on net primary productivity (how much carbon dioxide vegetation takes in during photosynthesis minus how much carbon dioxide the plants release during respiration) are large and variable, ranging from less than 10 per cent to more than 100 per cent of the size of direct effects.
By examining daily rainfall and weekly vegetation data from satellite images and entering the data into migration models, the researchers were amazed at how well they could predict when zebras started migrating and how fast they migrated.
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 study, published recently in the International Journal of Environmental Research and Public Health, combines mental - health data from the Survey of the Health of Wisconsin (SHOW) and Landsat 5 satellite data from July 2009 that analyzed how much vegetation was present in each of the SHOW census blocks.
Petrov also used imagery from the NASA / United States Geological Survey Landsat satellite program to determine how the presence of reindeer in their summer grounds impacts vegetation.
Our experiment enabled us to look carefully at how both warming and vegetation change above ground affected what was going on underground.
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.»
«We found the composition of the vegetation, and in particular the heather, had a greater effect on how fast plant litter decomposes than the 1 °C warming.
«This study is further evidence that the diversity and makeup of the vegetation, and the soil organisms beneath our feet are vitally important in controlling how much carbon is locked up or released from these carbon rich ecosystems.»
The system uses satellite observations of the timing and intensity of vegetation activity and how this relates to temperature and soil moisture to classify the world's vegetation into 24 biome types.
Using information from pre-historic climate archives, Zeebe calculated how slow climate feedbacks (land ice, vegetation, etc.) and climate sensitivity may evolve over time.
But fossil fuels development and loss of vegetation does have a big effect on how a region responds and adapts to a changing climate because of the water stress it creates where drilling is occurring.
He also noted how the natural vegetation grew back after the trees were removed and the areas burnt.
The model allowed Bonachela and his colleagues to apply small - scale observational data broadly to understand how rainfall influences vegetation growth and persistence in the presence and absence of termites across an entire ecosystem.
«It was the vegetation, the transition from forest to tundra and how the colors changed through the seasons that really captivated me,» he recalls.
Researchers are drilling for clues to how dramatic changes in African rainfall and vegetation shaped our species.
«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.
It took Asner and his team eight years to develop a technique that can detect and quantify selective logging by analyzing each pixel in the image for spectral data — which contains information about the extent of vegetation in the forest canopy, the amount of debris on the forest floor and how much bare soil is exposed — while also taking into consideration climate conditions.
How much movement occurs depends on a number of factors including wind strength, the amount of vegetation cover and moisture levels.
To explore how well the timing of the changes matched up, the researcher focused on a carbon isotope called 13C, which is retained in soil in the same proportions as in the vegetation the soil once contained.
«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.
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.
«I initially was interested simply in determining how closely timed the calving season was to the onset of vegetation green - up,» Post explained, «without a thought as to how this relationship might be affected by climate change.»
Dagmar Egelkraut studied how persistent these vegetation shifts are, as well as the processes that are contributing to their stability.
«Vegetation controls the future of the water cycle: Engineers demonstrate the key role of vegetation in responding to rising CO2 levels and show how plants will regulate future dryneVegetation controls the future of the water cycle: Engineers demonstrate the key role of vegetation in responding to rising CO2 levels and show how plants will regulate future drynevegetation in responding to rising CO2 levels and show how plants will regulate future dryness.»
They then compared how 10 different vegetation classes, ranging from grasses to trees, would likely respond in the Arctic under these different future warming scenarios.
Their results showed that changes in key water - stress variables are strongly modified by vegetation physiological effects in response to increased CO2 at the leaf level, illustrating how deeply the physiological effects due to increasing atmospheric CO2 impact the water cycle.
We need to take into account how the landscapes we live in today are the result of millennia of people doing things like burning vegetation, herding animals and farming when we make decisions about how to preserve, restore, or remodel environments.
How does this value compare with what what we think S was in earlier periods in Earth's history (e.g. do we think it was closer to 1 when there was little ice and / or carbon locked up in vegetation)?