Date
2010
Abstract
Two of the most pervasive human impacts on ecosystems are alteration of global nutrient budgets and changes in the abundance and identity of consumers. Fossil fuel combustion and agricultural fertilization have doubled and quintupled, respectively, global pools of nitrogen and phosphorus relative to pre-industrial levels. In spite of the global impacts of these human activities, there have been no globally coordinated experiments to quantify the general impacts on ecological systems. This experiment seeks to determine how nutrient availability controls plant biomass, diversity, and species composition in a desert grassland. This has important implications for understanding how future atmospheric deposition of nutrients (N, S, Ca, K) might affect community and ecosystem-level responses. This study is part of a larger coordinated research network that includes more than 40 grassland sites around the world. By using a standardized experimental setup that is consistent across all study sites, we are addressing the questions of whether diversity and productivity are co-limited by multiple nutrients and if so, whether these trends are predictable on a global scale.
Handle
http://hdl.handle.net/1928/29968.1
Other Identifier
SEV231
Knowledge Network for Biocomplexity (KNB) Identifier
knb-lter-sev.231.160879
Document Type
Dataset
Rights
Data Policies: This dataset is released to the public and may be freely downloaded. Please keep the designated Contact person informed of any plans to use the dataset. Consultation or collaboration with the original investigators is strongly encouraged. Publications and data products that make use of the dataset must include proper acknowledgement of the Sevilleta LTER. Datasets must be cited as in the example provided. A copy of any publications using these data must be supplied to the Sevilleta LTER Information Manager. By downloading any data you implicitly acknowledge the LTER Data Policy (http://www.lternet.edu/data/netpolicy.html).
Publisher
SEV LTER, Department of Biology, University of New Mexico, Albuquerque, NM , 87131
Source
http://dx.doi.org/10.6073/pasta/855053189b33f6321ceb47a14f41f45d
Temporal coverage
2007-05-01 - 2009-10-01
Spatial coverage
Location: Deep Well is located on McKenzie Flats and is site of the longest running SEV LTER met station, number 40, which has been active since 1988. In addition to studies of meteorological variables, core line-intercept vegetation transects and line-intercept transects from the 1995 and 2001 Deep Well fires are sampled here. The mini-rhizotron study, blue and black grama compositional comparison, blue and black grama patch dynamics investigation, and kangaroo rat population assessement are all ongoing here. Deep Well Blue/Black Grama Mixed is also the location of the warming and monsoon experiments, as well as portions of the line-intercept and vegetation removal studies. On August 4, 2009, a lightning-initiated fire began on the Sevilleta National Wildlife Refuge. By August 5, 2009, the fire had reached the area of Deep Well Blue/Black Grama Mixed. While portions of this site were burned, the entirety was not. See individual projects for further information on the effects of the fire.Vegetation: The vegetation of Deep Well Blue/Black Grama Mixed is Chihuahuan Desert Grassland, dominated by black grama (Bouteloua eriopoda) and blue grama (B. gracilis). Other grasses found at the site include dropseeds (Sporobolus spp.) and threeawns (Aristida spp.). Shrubs are uncommon but those that occur include Yucca glauca, Ephedra torreyi, and four-wing saltbush (Atriplex canescens). Herbaceous plants include Plantago purshii, Hymenopappus filifolius, and globe mallows (Sphaeralcea spp.).
DOI
doi:10.6073/pasta/855053189b33f6321ceb47a14f41f45d
Permanent URL
http://dx.doi.org/10.6073/pasta/855053189b33f6321ceb47a14f41f45d
Recommended Citation
Ladwig, Laura; Collins, Scott (2010): Effects of Multiple Resource Additions on Community and Ecosystem Processes: NutNet ANPP Quadrat Sampling at the Sevilleta National Wildlife Refuge, New Mexico. Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/855053189b33f6321ceb47a14f41f45d
Show full metadata
knb-lter-sev.231.160879-provenance.xml (3 kB)
Show provenance metadata
knb-lter-sev.231.160879-report.html (22 kB)
Show original LTER Network Data Portal ingest report
sev231_nppnutnetquadrat_20130108.txt (295 kB)
Data in TXT format
Comments
This dataset was originally published on the Long Term Ecological Research (LTER) Network Data Portal, https://portal.lternet.edu, and potentially via other repositories or portals as described. The Digital Object Identifier (DOI) of the source data package is doi:10.6073/pasta/855053189b33f6321ceb47a14f41f45d, and may be accessed at http://dx.doi.org/10.6073/pasta/855053189b33f6321ceb47a14f41f45d. Metadata and files included in this record mirror as closely as possible the source data and documentation, with the provenance metadata and quality report generated by the LTER portal reproduced here as '*-provenance.xml' and *-report.html' files, respectively.