Sentences with phrase «of grassland ecosystems»

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.

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.

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..

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.

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

Global warming won't just melt ice caps; it could create whole new biomes — major ecosystem types like forest, desert, grassland, and tundra — say climatologists led by John Williams at the University of Wisconsin at Madison.

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.

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.

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

It found that all of the human - induced changes affected the productivity of the grassland plots, but only those that reduced biodiversity reduced ecosystem stability.

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 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

«We have the largest remaining tract of one of the world's most endangered ecosystems, the tallgrass prairie, and we have a diversity of other grasslands that support many wildlife species.»

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.

Overview: Page 1 - 2: Introduction to Ecosystems Page 3 - 4: The Food Chain Page 5 - 6: Scales of Ecosystems Page 7 - 8: Tundra Page 9 - 10: Taiga Page 11 - 12: Temperate Forest Page 13 - 14: Rainforest Page 15 - 16: Grassland Page 17 - 18: Savanna Page 19 - 20: Desert Page 21 - 22: Marine Page 23 - 24: Freshwater Page 25 - 26: Reflection EXTRA: Compact version of the unit Keywords: Ecosystem, biome, ecotone, biosphere, biotic, herbivores, carnivores, trees, earth, nature, animals, plants, species, food chain, oceans, tundra, taiga, temperate forest, rainforest, grassland, savanna, desert, marine, freshwater

Walks leading out from the guest house wind through a variety of unspoiled ecosystems — forest, wetland, river and grassland on the upper reaches of the Nicholson river, north east from Bairnsdale.

It protects ecosystems ranging from tropical forest, seasonally flooded grasslands, marsh and mangroves to Caribbean beaches and a 110 - kilometer - stretch of pristine coral reef.

Forests, grasslands, lakes, oceans, deserts, and other natural ecosystems provide a range of natural services that people have often taken for granted, even though they are vital to human welfare.

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).

And given the ecological importance of grassland prairies, the idea of a protecting valuable ecosystems while also obtaining a yield is pretty darned compelling.

We can completely scrap a huge % of commodity crops altogether and restore the grasslands ecosystems, raising or animals foods directly off that!

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.

That is, 40 % of existing landscapes will experience a shift from one major ecosystem type to another — from forest to grassland or grassland to desert for example.

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.

It traverses a diverse range of forest, grassland and taiga ecosystems that support at least 2,800 plant and 500 animal species on the Russian side alone.

This guidance document focuses on the importance of drylands as ecosystems ranging from rangelands and grasslands to semi-desert, and host 1.1 billion hectares of forest — more than a quarter of the world's forest area.

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.»

Imagine the Sahara Desert, but with grasslands, wetlands, eclectic wildlife, and an intricate ecosystem lushly nestled around a large freshwater lake the size of Germany.

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.

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.

The site, designed to exploit grasslands as models for understanding how ecosystems may respond to climate change, hosts a number of studies of the potential effects from elevated atmospheric carbon dioxide, elevated temperature, increased precipitation, and increased nitrogen deposition.

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.

Surely, if we want to have any chance of avoiding the worst impacts of climate change, we need to drastically reduce fossil fuel emissions AND protect our remaining ecosystems, whilst undoing some of the harm already done to natural forests, wetlands and grasslands!

«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.

«Because grassland ecosystems are the most vulnerable to extreme climate events, we examined data collected by many other scientists to try and understand the relationship between rain events and drought on the potential productivity of grasslands,» said Chuixiang Yi of City University of New York.