Sentences with phrase «in grassland ecosystems»

In another Foundation - funded project, the team is using samples from the field vaccine study to help understand plague ecology and overlap among rodent communities and prairie dogs in grassland ecosystems.

Findings in the paper, «Worldwide Evidence of a Unimodal Relationship between Productivity and Plant Species Richness,» reveal a consistent biological rule governing the link between plant biomass and species richness in grassland ecosystems — plant species diversity is generally greatest at intermediate levels of plant biomass.

For the last 35 years, Hoogland has studied four species of prairie dogs living in grassland ecosystems within national parks or wildlife refuges in the western U.S..

Not exact matches

van Eekeren, N.; Murray, P.J. and Smeding, F.W. (2007) Soil biota in grassland, its ecosystem services and the impact of management.

Cores, they argued, must be continental in scale, preserving entire ecosystems: mountain forests, grasslands, tundra, savannah.

Grasslands in North America and across the globe are rapidly disappearing, Veach said, and woody plants are expanding and converting grasslands into forest eGrasslands in North America and across the globe are rapidly disappearing, Veach said, and woody plants are expanding and converting grasslands into forest egrasslands into forest ecosystems.

Severe droughts are on the rise in many regions worldwide and are increasingly affecting a wide range of ecosystems — including marshes, mangroves, temperate and tropical forests, grasslands and coral reefs — that provide essential services to humans and the environment alike, Silliman said.

The work complements other recent studies showing that greenhouse gas warming will shift plant ecosystems toward weedy plants, says Robert Jackson of Duke University in Durham, North Carolina, who has done similar work with natural grasslands.

Researchers working in northern Siberia have been striving to restore the grassland ecosystem that supported mammoths, woolly rhinoceroses and other giants during the Pleistocene epoch, between 1.8 million and 10,000 years ago.

The authors are concerned the dramatic reduction in size of big bluestem foretells a fundamental shift in the nature of the Midwestern grassland ecosystem.

Like Coke versus Pepsi, tropical land ecosystems come in two choices: forest or grassland.

He points to research that shows that mammoths and other large herbivores trampling across the ancient Arctic ecosystems helped maintain the grasslands by knocking down trees and spreading grass seeds in the dung.

Robert Pringle, an assistant professor in ecology and evolutionary biology at Princeton and co-author of the Science paper, said that the unexpected function of termites in savannas and grasslands suggests that ants, prairie dogs, gophers and other mound - building creatures could also have important roles in ecosystem health.

Some ecosystems had surprisingly high emissions — grasslands in the United States converted to corn farms would increase carbon dioxide for 93 years.

This pattern has emerged time and again in studies on ecosystems ranging from grasslands to Arctic tundra.

Mass extinctions of the big beasts of the jungles, grasslands and oceans could already be adding to emissions, according to a new study based on fieldwork in aquatic ecosystems.

A grassland is also a complex ecosystem containing many species belonging to different levels in the food chain, so called «trophic levels.»

«Flowering meadows benefit humankind: Greater biodiversity in grasslands leads to higher levels of ecosystem services.»

In this new study, the researchers therefore used data from 46 experiments on grassland plant diversity in order to test the hypothesis of a positive effect of biodiversity on the resistance and resilience of ecosystems to various climate events, from drought to extreme rainfalIn this new study, the researchers therefore used data from 46 experiments on grassland plant diversity in order to test the hypothesis of a positive effect of biodiversity on the resistance and resilience of ecosystems to various climate events, from drought to extreme rainfalin order to test the hypothesis of a positive effect of biodiversity on the resistance and resilience of ecosystems to various climate events, from drought to extreme rainfall.

«After they arrived in Alaska, they spread quickly across the continent, taking advantage of the rich grassland resources that were part of the ice age ecosystem.»

One - time phosphate fertilizer application to grassland columns modifies the soil microbiota and limits its role in ecosystem services — Israel Ikoyi, Science of The Total Environment

De-extinction of the Heath Hen will not only galvanize public interest in the conservation of the sandplain grasslands, but the revived Heath Hen would also fill a needed ecological role in this unique ecosystem.

The following topics are covered: Climate change Extreme weather (Hurricanes and Drought) Extreme weather in the UK (anticyclones and depressions) Ecosystems and biomes Managing ecosystems (tropical rainforests and semi-arid grasslands) Development gap Development continuum Aid and management Health and development Regional development - North South divide This booklet was used to distribute to parents in order to assist parents quiz their child to revise, parents that did not attend were sent the packs home (I have included the instructions on tEcosystems and biomes Managing ecosystems (tropical rainforests and semi-arid grasslands) Development gap Development continuum Aid and management Health and development Regional development - North South divide This booklet was used to distribute to parents in order to assist parents quiz their child to revise, parents that did not attend were sent the packs home (I have included the instructions on tecosystems (tropical rainforests and semi-arid grasslands) Development gap Development continuum Aid and management Health and development Regional development - North South divide This booklet was used to distribute to parents in order to assist parents quiz their child to revise, parents that did not attend were sent the packs home (I have included the instructions on the front).

Scott Strough may already have linked this, but for those interested in soil carbon storage, I just stumbled across this article on the Nature Conservancy's blog site while investigating something else: Can Grasslands, The Ecosystem Underdog, Play an Underground Role in Climate Solutions?.

A portion of this controversy and the lack of scientific support for the claims made for his method on livestock productivity and grassland ecosystem function may be found in peer - reviewed papers (e.g. Briske et al. 2008).

The region is known for the llanos, an area of tropical savanna that could be described as a cross between two ecosystems in South America: the flooded grasslands of Pantanal and the prairie - like Cerrado.

And outside the energy sector: Biological CO2 capture via photosynthesis and storage in ecosystems (e.g. forests, grasslands, wetlands, oceans) and / or agricultural lands (e.g. soils, biomass); and chemical CO2 capture via enhanced weathering of rocks that natural react (albeit quite slowly) with CO2 in the air.

More than 400 programs in 62 countries invested in the natural ability of forests, wetlands, grasslands, and other ecosystems to ensure clean, reliable water supplies for cities and communities, and to combat threats from rapid urban expansion and agricultural pollution.

The difference lies in the prediction that as boreal ecosystems follow the warming climate northward, their southern boundaries will be overtaken by even warmer and drier climates better suited for grassland.

The destruction of natural ecosystems — whether rain forest in the tropics or grasslands in South America — not only releases greenhouse gases into the atmosphere when they are burned and plowed, but also deprives the planet of natural sponges to absorb carbon emissions.

[benefits of] perennials: Whirling, Ben P., et al. «Perennial Grasslands Enhance Biodiversity and Multiple Ecosystem Services in Bioenergy Landscapes.»

Changes in other ecosystems, such as grasslands, are also likely (for more detail, see assessments by Muriuki et al., 2005; Levy, 2006).

Emphasizing the realities of climate change impacts in eight ecosystem types in the United States (forest, shrubland, grassland, desert, Arctic tundra, inland water, coastal, and marine), the Strategy is relevant to resource managers, industry representatives, and private landowners nationwide.

«All these ecosystem services add up to societal relevance in the region, where around half a million farmers rely on these grasslands for their main activity: cattle and sheep production.»

Very few experimental approaches have assessed ecosystem responses to multi-factorial treatments such as listed above (Norby and Luo, 2004), and experiments on warming, rainfall change or atmospheric CO2 level are virtually absent in savannas, with many ecosystem studies confined mainly to temperate grasslands (Rustad et al., 2001).

This technical document stresses that grasslands, while being one of the most important ecosystems in the world, are also a significant source of pollution including the greenhouse gases methane and nitrous oxide.

Spurred on by the region's wildfires, which have been steadily increasing over the last few years, and droughts, the region's remaining swaths of forest and grasslands risk being lost in a single summer - leaving behind a spare, «semidesertic» ecosystem.

And in East Africa, scientists found that a decline in wildebeest populations in the Serengeti - Mara grassland - savanna system decades ago allowed organic matter to accumulate, which eventually led to about 80 percent of the ecosystem to burn annually, releasing carbon from the plants and the soil, before populations recovered in recent years.

But we're in danger of forgetting that it concerns a deadly serious matter: a change in the climatic conditions which have made human civilisation and the current human population possible, and, specifically, the degradation of the most wonderful and beautiful of the world's ecosystems into desert and scrubby grassland.

«We can identify the impacts of climate extremes on these grassland ecosystems by comparing ecosystem performance in each year to the perfect curve,» said Yi.