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Nitrogen Fertilization Experiment (Nfert): Seasonal Biomass And Seasonal And Annual Npp Data At The Sevilleta National Wildlife Refuge, New Mexico (2004- Present), Scott Collins
Sevilleta LTER Program Data
Begun in spring 2004, this long-term study at the Sevilleta LTER examines how fertilization affects above-ground biomass production (ANPP) in a mixed desert-grassland. Net primary production is a fundamental ecological variable that quantifies rates of carbon consumption and fixation. Estimates of NPP are important in understanding energy flow at a community level as well as spatial and temporal responses to a range of ecological processes. While measures of both below- and above-ground biomass are important in estimating total NPP, this study focuses on above-ground net primary production (ANPP). Above-ground net primary production is the change in plant biomass, including loss …
Core Research Site Web Seasonal Biomass And Seasonal And Annual Npp Data For The Net Primary Production Study At The Sevilleta National Wildlife Refuge, New Mexico (1999-Present), Esteban Muldavin, Douglas I. Moore
Core Research Site Web Seasonal Biomass And Seasonal And Annual Npp Data For The Net Primary Production Study At The Sevilleta National Wildlife Refuge, New Mexico (1999-Present), Esteban Muldavin, Douglas I. Moore
Sevilleta LTER Program Data
This long-term study at the Sevilleta LTER measures net primary production (NPP) across four distinct ecosystems: creosote-dominant shrubland (Site C, est. winter 1999), black grama-dominant grassland (Site G, est. winter 1999), blue grama-dominant grassland (Site B, est. winter 2002), and pinon-juniper woodland (Site P, est. winter 2003), which is now in its own dataset, SEV278 (Pinon-Juniper (Core Site) Quadrat Data). Net primary production is a fundamental ecological variable that quantifies rates of carbon consumption and fixation. Estimates of NPP are important in understanding energy flow at a community level as well as spatial and temporal responses to a range of …
Monsoon Rainfall Manipulation Experiment (Mrme): Net Primary Production Quadrat Data At The Sevilleta National Wildlife Refuge, New Mexico (2006-Present), Scott Collins
Sevilleta LTER Program Data
The Monsoon Rainfall Manipulation Experiment (MRME) is to understand changes in ecosystem structure and function of a semiarid grassland caused by increased precipitation variability, which alters the pulses of soil moisture that drive primary productivity, community composition, and ecosystem functioning. The overarching hypothesis being tested is that changes in event size and variability will alter grassland productivity, ecosystem processes, and plant community dynamics. In particular, we predict that many small events will increase soil CO2 effluxes by stimulating microbial processes but not plant growth, whereas a small number of large events will increase aboveground net primary production (ANPP) and soil …
Long-Term Intersite Decomposition Team (Lidet) Plant Litter Data At The Sevilleta National Wildlife Refuge, New Mexico (1990-2001), Carleton White
Long-Term Intersite Decomposition Team (Lidet) Plant Litter Data At The Sevilleta National Wildlife Refuge, New Mexico (1990-2001), Carleton White
Sevilleta LTER Program Data
Sevilleta data from a study testing the degree to which substrate quality and macroclimate control the carbon and nitrogen dynamics of decomposing leaf, wood, and fine-root litter in a 10-year, 28 site (17 LTER) team experiment. http://andrewsforest.oregonstate.edu/data/abstract.cfm?dbcode=TD023&topnav=97
The Effect Of Kangaroo-Rat Activity On Plant Species Composition At The Sevilleta National Wildlife Refuge, New Mexico (1999), Gyuri Kroel-Dulay, Debra Peters, Tamara Hochstrasser
The Effect Of Kangaroo-Rat Activity On Plant Species Composition At The Sevilleta National Wildlife Refuge, New Mexico (1999), Gyuri Kroel-Dulay, Debra Peters, Tamara Hochstrasser
Sevilleta LTER Program Data
Our objective was to evaluate the effects of kangaroo rat mounds on species diversity and composition at a semiarid-arid grassland ecotone. We expected that source populations of plants occurring on kangaroo rat mounds have important influences on the species composition of vegetation at the landscape scale, and that these influences differ by grassland type. Our study was conducted at the Sevilleta LTER in New Mexico, where a grassland type dominated by Bouteloua gracilis, a shortgrass steppe species, and a grassland type dominated by B. eriopoda, a desert grassland species, meet to form patches across the landscape. Four 0.4 ha plots …
Discontinued Vegetation Line-Intercept Transects In Transition Zones At The Sevilleta National Wildlife Refuge, New Mexico (1989-1998), Scott Collins
Discontinued Vegetation Line-Intercept Transects In Transition Zones At The Sevilleta National Wildlife Refuge, New Mexico (1989-1998), Scott Collins
Sevilleta LTER Program Data
The line-intercept transects included in this data set have been discontinued. These transects were installed to evaluate temporal and spatial dynamics in vegetation transition zones (e.g.black grama grassland/creosote shrubland) at one centimeter resolution. Each study site originally contained four 400 m transects, representing total coverage of 1 sq km. The transects were placed along a roughly north/south azimuth. The northwestern and southwestern transects were 100 meters from the western edge of the 1 sq km study area and the northeastern and southeastern transects were 100 m from the eastern edge, providing 800 meters between the eastern and western transects. The …
Warming-El Nino-Nitrogen Deposition Experiment (Wenndex): Net Primary Production Quadrat Data At The Sevilleta National Wildlife Refuge, New Mexico (2006 -Present), Scott Collins, William Pockman, Joe Fargione
Warming-El Nino-Nitrogen Deposition Experiment (Wenndex): Net Primary Production Quadrat Data At The Sevilleta National Wildlife Refuge, New Mexico (2006 -Present), Scott Collins, William Pockman, Joe Fargione
Sevilleta LTER Program Data
Humans are creating significant global environmental change, including shifts in climate, increased nitrogen (N) deposition, and the facilitation of species invasions. A multi-factorial field experiment is being performed in an arid grassland within the Sevilleta National Wildlife Refuge (NWR) to simulate increased nighttime temperature, higher N deposition, and heightened El Niño frequency (which increases winter precipitation by an average of 50%). The purpose of the experiment is to better understand the potential effects of environmental change on grassland community composition and the growth of introduced creosote seeds and seedlings. The focus is on the response of three dominant species, all …
Grassland Vegetation Line-Intercept Transects At The Sevilleta National Wildlife Refuge, New Mexico (1989 - Present), Scott Collins
Grassland Vegetation Line-Intercept Transects At The Sevilleta National Wildlife Refuge, New Mexico (1989 - Present), Scott Collins
Sevilleta LTER Program Data
In 1989, line-intercept transects were installed to evaluate temporal and spatial dynamics across vegetation transition zones. Currently, a 400m transect is sampled at a grassland site (Deep Well) which is dominated by Bouteloua eriopoda (black grama) and, near the southern end of the transect, B. gracilis (blue grama). A second grassland site (Five Points), dominated by B. eriopoda and, to the south, Larrea tridentata (creosote), is also sampled. Both sites are sampled twice a year, in May/June and September/October, and measurements are taken at a one-centimeter resolution. The biannual sampling protocol detects potential responses in both cool and warm season …
Burn Study Sites Quadrat Data For The Net Primary Production Study At The Sevilleta National Wildlife Refuge, New Mexico (2004-Present), Esteban Muldavin
Burn Study Sites Quadrat Data For The Net Primary Production Study At The Sevilleta National Wildlife Refuge, New Mexico (2004-Present), Esteban Muldavin
Sevilleta LTER Program Data
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 …
Pinon-Juniper (Core Site) Quadrat Data For The Net Primary Production Study At The Sevilleta National Wildlife Refuge, New Mexico (2003-Present ), Esteban Muldavin
Pinon-Juniper (Core Site) Quadrat Data For The Net Primary Production Study At The Sevilleta National Wildlife Refuge, New Mexico (2003-Present ), Esteban Muldavin
Sevilleta LTER Program Data
This dataset contains pinon-juniper woodland quadrat data and is part of a long-term study at the Sevilleta LTER measuring net primary production (NPP) across four distinct ecosystems: creosote-dominant shrubland (Site C, est. winter 1999), black grama-dominant grassland (Site G, est. winter 1999), blue grama-dominant grassland (Site B, est. winter 2002), and pinon-juniper woodland (Site P, est. winter 2003). Net primary production is a fundamental ecological variable that quantifies rates of carbon consumption and fixation. Estimates of NPP are important in understanding energy flow at a community level as well as spatial and temporal responses to a range of ecological processes. …
Core Site Grid Quadrat Data For The Net Primary Production Study At The Sevilleta National Wildlife Refuge, New Mexico (2013- Present), Esteban Muldavin
Core Site Grid Quadrat Data For The Net Primary Production Study At The Sevilleta National Wildlife Refuge, New Mexico (2013- Present), Esteban Muldavin
Sevilleta LTER Program Data
Begun in spring 2013, this project is part of a long-term study at the Sevilleta LTER measuring net primary production (NPP) across three distinct ecosystems: creosote-dominant shrubland (Site C), black grama-dominant grassland (Site G), and blue grama-dominant grassland (Site B). Net primary production is a fundamental ecological variable that quantifies rates of carbon consumption and fixation. Estimates of NPP are important in understanding energy flow at a community level as well as spatial and temporal responses to a range of ecological processes.Above-ground net primary production is the change in plant biomass, represented by stems, flowers, fruit and and foliage, over …
Master Plant Species Information Database For The Sevilleta National Wildlife Refuge, New Mexico (1989-1996), Tim Lowrey
Master Plant Species Information Database For The Sevilleta National Wildlife Refuge, New Mexico (1989-1996), Tim Lowrey
Sevilleta LTER Program Data
This data base contains taxonomic and ecological information for the plant species on the Sevilleta National Wildlife Refuge.
Plant Removal Study: Recovery Of Vegetation Following Disturbance At The Sevilleta National Wildlife Refuge, New Mexico (1995-Present), Debra Peters
Sevilleta LTER Program Data
In 1995, a removal study was initiated at the Sevilleta LTER to examine the response of vegetation following the removal of dominant species. Five sites were selected that were dominated by either blue grama (site 1), blue and black grama (site 2), black grama (site 3), black grama and creosote (site 4), or creosote (site 5). A sixth site was later added in the blue grama community along the foothills of the Los Pinos Mountains (site 6). At sites 1, 3, 5, and 6, five 3m x 4m plots had all plants of the dominant species removed; five 3m x …
Core Research Site Web Quadrat Data For The Net Primary Production Study At The Sevilleta National Wildlife Refuge, New Mexico (1999-Present), Esteban Muldavin
Core Research Site Web Quadrat Data For The Net Primary Production Study At The Sevilleta National Wildlife Refuge, New Mexico (1999-Present), Esteban Muldavin
Sevilleta LTER Program Data
This dataset is part of a long-term study at the Sevilleta LTER measuring net primary production (NPP) across four distinct ecosystems: creosote-dominant shrubland (Site C, est. winter 1999), black grama-dominant grassland (Site G, est. winter 1999), blue grama-dominant grassland (Site B, est. winter 2002), and pinon-juniper woodland (Site P, est. winter 2003). Net primary production is a fundamental ecological variable that quantifies rates of carbon consumption and fixation. Estimates of NPP are important in understanding energy flow at a community level as well as spatial and temporal responses to a range of ecological processes. Above-ground net primary production is the …
Monsoon Rainfall Manipulation Experiment (Mrme): Seasonal Biomass And Seasonal And Annual Npp Data At The Sevilleta National Wildlife Refuge, New Mexico (2006-Present), Scott Collins
Sevilleta LTER Program Data
Begun in fall 2006, this long-term study at the Sevilleta LTER examines changes in net primary production (NPP) caused by increased precipitation variability within a semiarid grassland. Net primary production is a fundamental ecological variable that quantifies rates of carbon consumption and fixation. Estimates of NPP are important in understanding energy flow at a community level as well as spatial and temporal responses to a range of ecological processes. While measures of both below- and above-ground biomass are important in estimating total NPP, this study focuses on above-ground net primary production (ANPP). Above-ground net primary production is the change in …
Plant Phenology Monitoring Transects At The Sevilleta National Wildlife Refuge, New Mexico (1991-1995), Ann Evans
Sevilleta LTER Program Data
This study was designed to monitor the occurrence of various phenological events of plant species at seven research sites on the Sevilleta National Wildlife Refuge (i.e., Black Butte, Goat Draw, Five Points, Deep Well, Rio Salado, Sepultura Canyon and Los Pinos foothills watershed (Red Tank/222)). The phenological events monitored included germination, vegetative growth, budding (flowers), flowering, fruiting, dormancy, senescence, and death. All transects were placed close to Sevilleta LTER meteorological stations, allowing the coupling of biotic and abiotic data to detect relationships between climate and phenology.
Snakeweed Patch Vegetation Quad Data At The Sevilleta National Wildlife Refuge, Nm (1984, 1996), Douglas I. Moore, Herb Grover, James Gosz
Snakeweed Patch Vegetation Quad Data At The Sevilleta National Wildlife Refuge, Nm (1984, 1996), Douglas I. Moore, Herb Grover, James Gosz
Sevilleta LTER Program Data
In 1984, a research project was initiated on a relatively small disturbance patch just south of Deep Well. This disturbance was thought to be the result of an old praire dog town, probably dating back to when a nearby ranch was active, and a lot of old mammal mounds remained in the disturbed area. One of the things that made the disturbance patch particularily noticeable was the lush growth of snakeweed (Gutierrezia sarothrae) within the patch. This prompted the designation of the disturbance patch as the "snakeweed patch" or "Gutierrezia patch." In addition, there was an obvious increase in bare …
Pinon Juniper Net Primary Production Quadrat Data From The Sevilleta National Wildlife Refuge, New Mexico: 1999-2001, Esteban Muldavin
Pinon Juniper Net Primary Production Quadrat Data From The Sevilleta National Wildlife Refuge, New Mexico: 1999-2001, Esteban Muldavin
Sevilleta LTER Program Data
This three-year study at the Sevilleta LTER was designed to monitor net primary production (NPP) across two distinct ecosystems: pinon/juniper woodland (P) and juniper savannah woodland (J). Net primary production (NPP) is a fundamental ecological variable that measures rates of carbon consumption and fixation. Estimates of NPP are important in understanding energy flow at a community level as well as spatial and temporal responses of the community to a wide range of ecological processes. While measures of both below- and above-ground biomass are important in estimating NPP, this study focused on estimating above-ground biomass production (ANPP).To measure ANPP (i.e., the …
Rainfall Manipulation Study Vegetation Data From The Chihuahuan Desert Grassland And Creosote Shrubland At The Sevilleta National Wildlife Refuge, New Mexico (2003-2011), William Pockman
Sevilleta LTER Program Data
The overall goal of the rainfall manipulation project is to understand the coupled ecological and hydrological responses of a grassland, shrubland and a mixed grass-shrub vegetation community to extended periods of increased or decreased rainfall. Rainfall manipulation plots have been established in each of these three vegetation communities in the Five Points area of Sevilleta National Wildlife Refuge. In each vegetation community, three control plots, three drought treatment plots, and three water addition plots have been installed, each approximately 10 x 15 m in size. In each plot, vertical profiles of soil moisture probes have been installed under each cover …
Deep Well Burn Line-Intercept Vegetation Transects At The Sevilleta National Wildlife Refuge, New Mexico (1995-2009), Douglas I. Moore
Deep Well Burn Line-Intercept Vegetation Transects At The Sevilleta National Wildlife Refuge, New Mexico (1995-2009), Douglas I. Moore
Sevilleta LTER Program Data
A natural burn occurred in the Deep Well area of McKenzie Flats in June, 1995, following which studies were initiated to evaluate the effect of fire on plant species composition and the spatial and temporal dynamics of regrowth. The burn area was approximately 24 hectares, forming a swath about 200 m wide from the initial lightning-ignition source. The fire moved in a westward direction from the ignition point, leaving a relatively straight border along the southern boundary and an irregular edge along the northern boundary. The fire was extinguished naturally.One week after the burn, four 100 m line-intercept transects were …