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dc.contributor.authorBurke, Ingrid C.
dc.coverage.temporal1997-2012
dc.date1997-2012
dc.date.accessioned2007-01-03T07:05:53Z
dc.date.available2007-01-03T07:05:53Z
dc.identifier.urihttp://hdl.handle.net/10217/85547
dc.identifier.urihttp://dx.doi.org/10.25675/10217/85547
dc.descriptionThe Short Grass Steppe site encompasses a large portion of the Colorado Piedmont Section of the western Great Plains. The extent is defined as the boundaries of the Central Plains Experimental Range (CPER). The CPER has a single ownership and landuse (livestock grazing). The PNG is characterized by a mosaic of ownership and land use. Ownership includes federal, state or private and land use consists of livestock grazing or row-crops. There are NGO conservation groups that exert influence over the area, particularly on federal lands.
dc.description.abstractThis data package was produced by researchers working on the Shortgrass Steppe Long Term Ecological Research (SGS-LTER) Project, administered at Colorado State University. Long-term datasets and background information (proposals, reports, photographs, etc.) on the SGS-LTER project are contained in a comprehensive project collection within the Repository (http://hdl.handle.net/10217/100254). The data table and associated metadata document, which is generated in Ecological Metadata Language, may be available through other repositories serving the ecological research community and represent components of the larger SGS-LTER project collection. In a 10-year study, we assessed the influence of five carbon (C) treatments on the labile C and nitrogen (N) pools of historically N enriched plots on the Shortgrass Steppe Long Term Ecological Research site located in northeastern Colorado. For eight years, we applied sawdust, sugar, industrial lignin, sawdust + sugar, and lignin + sugar to plots that had received N and water additions in the early 1970s. Previous work showed that past water and N additions altered plant species composition and enhanced rates of nutrient cycling; these effects were still apparent 25 years later. We hypothesized that labile C amendments would stimulate microbial activity and suppress rates of N mineralization, whereas complex forms of carbon (sawdust and lignin) could enhance humification and lead to longer-term reductions in N availability. Results indicated that of the five carbon treatments, sugar, sawdust, and sawdust + sugar suppressed N availability, with sawdust + sugar being the most effective treatment to reduce N availability. The year after treatments stopped, N availability remained less in the sawdust + sugar treatment plots than in the high-N control plots. Three years after treatments ended, reductions in N availability were smaller (40-60%). Our results suggest that highly labile forms of carbon generate strong short- term N sinks, but these effects dissipate within one year of application, and that more recalcitrant forms reduce N longer. Sawdust + sugar was the most effective treatment to decrease exotic species canopy cover and increase native species density over the long term. Labile carbon had neither short- nor long-term effects on exotic species. Even though the organic amendments did not contribute to recovery of the dominant native species Bouteloua gracilis, they were effective in increasing another native species, Carex eleocharis. These results indicate that organic amendments may be a useful tool for restoring some native species in the shortgrass steppe.
dc.description.sponsorshipNSF Grant Number DEB-1027319
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartofData - Colorado State University
dc.relation.haspartBurke, Ingrid (2014): SGS-LTER Impact of Labile and Recalcitrant Carbon Treatments on Plant Communities (Basal Cover) in a Semiarid Ecosystem on the Central Plains Experimental Range, Nunn, Colorado, USA 1997-2012, ARS Study Number 3. Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/982bded25bda1039f72296cdaa96ceb1
dc.relation.haspartBurke, Ingrid (2014): SGS-LTER Impact of Labile and Recalcitrant Carbon Treatments on Plant Communities (Canopy Cover) in a Semiarid Ecosystem on the Central Plains Experimental Range, Nunn, Colorado, USA 2006-2012, ARS Study Number 3. Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/06253bc5e34b19e2a32aac36d0768734
dc.relation.haspartBurke, Ingrid (2014): SGS-LTER Impact of Labile and Recalcitrant Carbon Treatments on Plant Communities (Density) in a Semiarid Ecosystem on the Central Plains Experimental Range, Nunn, Colorado, USA 1997-2012, ARS Study Number 3. Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/0e0583763a3a10d852c9e059268be416
dc.relation.isreferencedbyBurke, I. C., E. E. Bontti, J. E. Barrett, P. N. Lowe, W. K. Lauenroth, and R. Riggle, Impact of Labile and Recalcitrant Carbon Treatments on Available Nitrogen and Plant Communities in a Semiarid Ecosystem. Ecological Applications 23, no. 3 (April 2013):537–545. http://hdl.handle.net/10217/85551
dc.relation.isreferencedbyLowe, Petra N., Nitrogen Availability Effects On Exotic, Invasive Plant Species. (Unpublished master's thesis). Colorado State University, 2000. http://hdl.handle.net/10217/82138
dc.relation.isreferencedbyBontti, Eliana E. Microbial Responses to Plant Functional Types and Historical Resources Additions in the Shortgrass Steppe. (Unpublished dissertation). Colorado State University, 2009. http://hdl.handle.net/10217/86389
dc.rightsData sets were provided by the Shortgrass Steppe Long Term Ecological Research (SGS-LTER) Program, a partnership between Colorado State University, United States Department of Agriculture, Agricultural Research Service, and the U.S. Forest Service Pawnee National Grassland. Significant funding for these data was provided by the National Science Foundation Long Term Ecological Research program (NSF Grant Number DEB-1027319). The SGS-LTER project (1980-2014) was established as one of the first sites in the US LTER Network and has produce a rich legacy of digital materials including reports, proposals, images, and data packages. Data, products and other information produced from the SGS-LTER are curated as a collection within the Repository (http://hdl.handle.net/10217/100254). Materials can be accessed from the Institutional Digital Repository of Colorado State University or upon request by emailing ecodata_nrel@colostate.edu. All data are open for dissemination and re-use for any purpose, but you must attribute credit to the owner and cite use appropriately according to the LTER Data Access Policy (http://www.lternet.edu/policies/data-access).
dc.subjectplants
dc.subjectcover
dc.subjectcarbon
dc.subjectpopulations
dc.subjectdisturbance
dc.titleSGS-LTER Impact of Labile and Recalcitrant Carbon Treatments on Plant Communities in a Semiarid Ecosystem on the Central Plains Experimental Range, Nunn, Colorado, USA 1997-2012, ARS Study Number 3
dc.typeDataset
dc.contributor.institutionColorado State University
dc.relation.referencesSpecies list of plants, http://hdl.handle.net/10217/80451
dc.relation.referencesKaplan, Nicole, SGS-LTER GIS layer with detailed information on study sites on Central Plains Experimental Range, Nunn, Colorado, USA 2012 (dataset). http://hdl.handle.net/10217/87177


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