In 2003, the U.S. Fish and Wildlife Service conducted a prescribed burn over a large part of the northeastern corner of the Sevilleta National Wildlife Refuge. Following this burn, a study was designed to look at the effect of fire on above-ground net primary productivity (ANPP) (i.e., the change in plant biomass, represented by stems, flowers, fruit and foliage, over time) within three different vegetation types: mixed grass (MG), mixed shrub (MS) and black grama (G). Forty permanent 1m x 1m plots were installed in both burned and unburned (i.e., control) sections of each habitat type. The core black grama site included in SEV129 is used as a G control site for analyses and does not appear in this dataset. The MG control site caught fire unexpectedly in the fall of 2009 and some plots were subsequently moved to the south. For details of how the fire affected plot placement, see Methods below. In spring 2010, sampling of plots 16-25 was discontinued at the MG (burned and control) and G (burned treatment only) sites, reducing the number of sampled plots to 30 at each.To measure ANPP (i.e., the change in plant biomass, represented by stems, flowers, fruit and foliage, over time), the vegetation variables in this dataset, including species composition and the cover and height of individuals, are sampled twice yearly (spring and fall) at each plot. The data from these plots is used to build regressions correlating biomass and volume via weights of select harvested species obtained in SEV157, "Net Primary Productivity (NPP) Weight Data." This biomass data is included in SEV185, "Burn Study Sites Seasonal Biomass and Seasonal and Annual NPP Data."
Knowledge Network for Biocomplexity (KNB) Identifier
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).
2004-03-08 - 2015-05-04
Location: Five Points Black Grama is on the transition between Chihuahuan Desert Scrub and Desert Grassland habitat. The site is subject to intensive research activity, including assessments of net primary productivity, phenology, and pollinator diversity, amongst other projects. It is the site of the unburned black grama (GU) component of the Burn NPP study. On August 4, 2009, a lightning-initiated fire began on the Sevilleta National Wildlife Refuge. By August 5, 2009, the fire had reached the Five Points Black Grama site. Portions of this site were burned, but not the entirety. See individual projects for further information on the effects of the burn. Vegetation: The Five Points Black Grama site is ecotonal in nature, bordering Chihuahuan Desert Scrub at its southern extent and Plains-Mesa Grassland at its northern, more mesic boundary. Characteristically, the dominant grass is black grama (Bouteloua eriopoda)., Location: The mixed grass (MG) site includes a burned and an unburned area. The mixed grass unburned (MGU) site is located just to the southeast of the Deep Well weather station. The mixed grass burned (MGB) site is on the east side of the road north of Deep Well.On August 4, 2009, a lightning-initiated fire began on the Sevilleta National Wildlife Refuge. The fire reached the mixed-grass unburned plots on August 5, 2009, consuming them in their entirety. As a result, in the spring of 2010, the mixed-grass unburned plots were moved to a different area within Deep Well, to the southwest of the Warming site. Vegetation: This is a mixed grass area dominated by black grama (Bouteloua eriopoda) and blue grama (B. gracilis) with dropseed (Sporobolus spp.) and galleta grass (Pleuraphis jamesii) also prominent., History: In 2003, the U.S. Fish and Wildlife Service conducted a prescribed fire over a large part of the northeast corner of the Sevilleta NWR, including the area near Deep Well containing the mixed grass site., siteid: 32Location: The mixed shrub (MS) location consists of burned and unburned areas. Both the mixed shrub burned (MSB) and mixed shrub unburned (MSU) areas are on the north side of the road running southeast from Five Points.Vegetation: This area is dominated by creosotebush (Larrea tridenta) but also maintains a relatively dense understory of black grama in comparison to true shrub land., History: The northwest half of the site was burned in June 2003. The southeast half was used as the control. Plots were established in spring 2004., siteid: 33Location: The grassland burn (GB) site is located on the east side of the road toward Five Points from Deep Well.Vegetation: This is a Chihuahuan desert grassland dominated by black grama (Bouteloua eriopoda) with some dropseed (Sporobolus spp.), siteid: 34
Muldavin, Esteban (2015): Burn Study Sites Quadrat Data for the Net Primary Production Study at the Sevilleta National Wildlife Refuge, New Mexico (2004-present). Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/d8cf12b5a0849b876ffae3a6c75a9740