USDA-ARS Global Change Research on Rangelands and Pasturelands

Derner, Justin D.; Schuman, G. E.; Jawson, M. D.; Shafer, Steven R.; Morgan, Jack A.; Polley, H. Wayne; Runion, G. Brett; Torbert, H. Allen; Rogers, H. H.; Bunce, James A.; Ziska, Lewis; Franzluebbers, Alan J.; Reeder, J. D.; Venterea, Rodney T.; Harper, Lowry A.

doi:10.2111/1551-501x(2005)27[36:ugcror]2.0.co;2

Cited by 8 publications

(4 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While the effects of elevated CO 2 on natural grasslands have received some attention, managed pastures-particularly those in the southeastern United States-remain an understudied agroecosystem (Derner et al, 2005). In a study of a southeastern pasture species, bahiagrass (Paspalum notatum Flüggé), conducted in temperature-gradient greenhouses constructed over a field soil, elevated CO 2 increased pasture establishment, ground cover, photosynthesis, and biomass (9%) in the first year of exposure (Fritschi et al, 1999).…”

Section: Pasturesmentioning

confidence: 99%

Effects of Elevated Atmospheric Carbon Dioxide on Soil Carbon in Terrestrial Ecosystems of the Southeastern United States

Runion

Torbert

Rogers

2015

SSSA Special Publications

Self Cite

View full text Add to dashboard Cite

As one travels through the rural southeastern landscape, even the most casual observer will note three dominant vegetation types. One cannot help but notice the predominance of forests-both natural and planted-as the Southeast is the nation's "wood basket," producing more wood fiber than any other area of the country. The casual traveler will also see a variety of agricultural row crops being grown. These change from cotton, corn, soybeans, and peanuts to tobacco and vegetables as one visits the varying geographic regions of this diverse area. The final land use one will observe is pasture lands; these may be supporting herds of beef cattle or may be managed to produce hay for winter feeding. All of these types of vegetation have the ability to take carbon from the atmosphere and store it either as standing biomass (including plant roots) or in soil. However, the Earth's atmosphere is changing, and increasing carbon dioxide (CO 2) concentration is one of the most studied and best documented of these changes. How will this rising CO 2 affect the vegetation types of the Southeast and how will these plants impact the continuing rise in the concentration of atmospheric CO 2 ? Finally, can these varying land uses help mitigate the increase in atmospheric CO 2 by storing C in soil, and can we, as researchers, find ways to manage these systems to increase the amount of CO 2 taken from the atmosphere and stored in the soil? These are the questions that will be investigated and explained in the following chapter. When considering soil C storage, there are several parameters and processes (as well as impacts on these) that must be taken into account. The first parameter to consider is inputs. Carbon can enter soil via plant processes such as root exudation, sloughing of root cells, and other processes associated with root growth. These inputs, however, are readily decomposable and probably do not add to soil C pools residing more than a few days to weeks. The majority of soil C comes directly from vegetation itself, as aboveground residue or litter and as plant roots. Therefore, it is important to consider plant growth and biomass production processes when attempting to understand soil C sequestration. Not only is Soil Carbon Sequestration and the Greenhouse Effect, 2nd edition. SSSA Special Publication 57.

show abstract

Section: Pasturesmentioning

confidence: 99%

Effects of Elevated Atmospheric Carbon Dioxide on Soil Carbon in Terrestrial Ecosystems of the Southeastern United States

Runion

Torbert

Rogers

2015

SSSA Special Publications

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the case of bare ground, on balance, revegetation is a means not only to prevent soil erosion and land degradation, but to increase vegetation and soil carbon storage. To date, most of the research investigating revegetation by planting grass and vegetation control has taken place in the context of converting marginal agricultural lands to grasslands, rather than range management (Derner et al 2005). Studies examining the restoration of agricultural fields to grasslands have shown that doing so increases carbon storage by replenishing some of the carbon lost from years of soil disturbance through tillage and erosion.…”

Section: Revegetating Bare Ground-mentioning

confidence: 99%

Engaging western landowners in climate change mitigation: a guide to carbon-oriented forest and range management and carbon market opportunities

Diaz¹,

Charnley²,

Gosnell³

2009

View full text Add to dashboard Cite

The Forest Service of the U.S. Department of Agriculture is dedicated to the principle of multiple use management of the Nation's forest resources for sustained yields of wood, water, forage, wildlife, and recreation. Through forestry research, cooperation with the States and private forest owners, and management of the National Forests and National Grasslands, it strives-as directed by Congress-to provide increasingly greater service to a growing Nation.The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write

show abstract

“…Rangelands and pastures represent systems where soil N is often limiting, indicating that an increase in plant production from rising [CO 2 ] may require soil N addition [ 15 ]. These systems also represent a type of conservation system in that they are not tilled and have an ability to sequester carbon in roots and soil.…”

Section: Introductionmentioning

confidence: 99%

“…Knowledge on how these systems respond to future environmental conditions will be important since they will impact both grazing and haying operations important to animal production. While the effects of elevated [CO 2 ] on rangelands have received some attention, pastures—particularly those in the southeastern US—remain an understudied agroecosystem [ 15 ]. Bahiagrass ( Paspalum notatum Flüggé), native to South America and introduced into the U.S. in 1913 [ 16 ], is a common and important C 4 grass in southeastern US pastures [ 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Belowground Response of a Bahiagrass Pasture to Long-Term Elevated [CO2] and Soil Fertility Management

Runion,

Prior,

Torbert

2024

Plants

Self Cite

View full text Add to dashboard Cite

Effects of rising atmospheric CO2 concentration [CO2] on pastures and grazing lands are beginning to be researched, but these important systems remain understudied compared to other agronomic and forest ecosystems. Therefore, we conducted a long-term (2005–2015) study of bahiagrass (Paspalum notatum Flüggé) response to elevated [CO2] and fertility management. The study was conducted at the USDA-ARS, National Soil Dynamics Laboratory open-top field chamber facility, Auburn, AL. A newly established bahiagrass pasture was exposed to either ambient or elevated (ambient + 200 µmol mol−1) [CO2]. Following one year of pasture establishment, half the plots received a fertilizer treatment [N at 90 kg ha−1 three times yearly plus P, K, and lime as recommended by soil testing]; the remaining plots received no fertilization. These treatments were implemented to represent managed (M) and unmanaged (U) pastures; both are common in the southeastern US. Root cores (0–60 cm depth) were collected annually in October and processed using standard procedures. Fertility additions consistently increased both root length density (53.8%) and root dry weight density (68.2%) compared to unmanaged plots, but these root variables were generally unaffected by either [CO2] or its interaction with management. The results suggest that southern bahiagrass pastures could benefit greatly from fertilizer additions. However, bahiagrass pasture root growth is unlikely to be greatly affected by rising atmospheric [CO2], at least by those levels expected during this century.

show abstract

USDA-ARS Global Change Research on Rangelands and Pasturelands

Cited by 8 publications

References 20 publications

Effects of Elevated Atmospheric Carbon Dioxide on Soil Carbon in Terrestrial Ecosystems of the Southeastern United States

Effects of Elevated Atmospheric Carbon Dioxide on Soil Carbon in Terrestrial Ecosystems of the Southeastern United States

Engaging western landowners in climate change mitigation: a guide to carbon-oriented forest and range management and carbon market opportunities

Belowground Response of a Bahiagrass Pasture to Long-Term Elevated [CO2] and Soil Fertility Management

Contact Info

Product

Resources

About