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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 …
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 …
Nitrogen Fertilization Experiment (Nfert): Net Primary Production Quadrat Data At The Sevilleta National Wildlife Refuge, New Mexico (2004-Present), Scott Collins
Sevilleta LTER Program Data
This dataset is part of a long-term study at the Sevilleta LTER, begun in spring 2004, which 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. Above-ground net primary production is the change in plant biomass, represented by stems, flowers, fruit and foliage, over time and incorporates growth as well as loss to death and …
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 …
Snakeweed (Gutierrezia Sarothrae) Habitat Vegetation Transect Data From The Sevilleta National Wildlife Refuge, New Mexico (1996), Douglas I. Moore, Herb Grover
Snakeweed (Gutierrezia Sarothrae) Habitat Vegetation Transect Data From The Sevilleta National Wildlife Refuge, New Mexico (1996), Douglas I. Moore, Herb Grover
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 …
Biannnual Creosote Branch Demography Study At The Sevilleta National Wildlife Refuge, New Mexico (1989-1993), Diane Marshall
Biannnual Creosote Branch Demography Study At The Sevilleta National Wildlife Refuge, New Mexico (1989-1993), Diane Marshall
Sevilleta LTER Program Data
No abstract provided.
Biannual Grass Demography Study At The Sevilleta National Wildlife Refuge, New Mexico (1989-1993), Douglas I. Moore
Biannual Grass Demography Study At The Sevilleta National Wildlife Refuge, New Mexico (1989-1993), Douglas I. Moore
Sevilleta LTER Program Data
No abstract provided.
Post-Fire Response Of Perennial Grass Communities At Mckenzie Flats, Sevilleta National Wildlife Refuge, New Mexico (1998 And 2001), Debra Peters, Paul Drewa, Kris Havstad, Jeffrey Herrick, Anne Cross
Post-Fire Response Of Perennial Grass Communities At Mckenzie Flats, Sevilleta National Wildlife Refuge, New Mexico (1998 And 2001), Debra Peters, Paul Drewa, Kris Havstad, Jeffrey Herrick, Anne Cross
Sevilleta LTER Program Data
We evaluated the effects of a lightning-initiated fire on responses of vegetation communities. Following a fire in July 1998, 25 experimental plots were established on the eastern edge of MacKenzie Flats at the Sevilleta National Wildlife Refuge. Ten of these plots were located in a Bouteloua gracilis (blue grama)- dominated site, while 15 were established in another area dominated by Bouteloua eriopoda (black grama). We evaluated basal and aerial cover of all plant species at the community level using a vertical line point intercept method along transects within plots. Sampling was conducted immediately after the fire during the last week …
Creosote Plant Dimension Study At The Sevilleta National Wildlife Refuge, New Mexico (1989-2008), Douglas I. Moore
Creosote Plant Dimension Study At The Sevilleta National Wildlife Refuge, New Mexico (1989-2008), Douglas I. Moore
Sevilleta LTER Program Data
This project was designed to investigate the response of plant growth and reproduction to short- and long-term variation in biotic and abiotic environmental variables. Several perennial taxa, including tree (Juniperus monsperma and Pinus edulis), shrub (Larrea tridentata) and bunch grasses (Oryzopsis hymenoides (now Achnaterum hymenoides) and Sporobolus contractus) species, were monitored at 1-3 sites differing in elevation and topography as well as edaphic variables and annual precipitation. The sites represented optimal or marginal/transitional zones for particular species. Demographic measurements were made biannually, after the 'wet' (fall) and 'dry' (spring) seasons. For tree and shrub species, estimates of growth and reproduction …
Post-Fire Responses Of Perennial Grass Populations At Mckenzie Flats, Sevilleta National Wildlife Refuge, New Mexico (1998 And 2001), Debra Peters, Paul Drewa, Kris Havstad, Jeffrey Herrick, Anne Cross
Post-Fire Responses Of Perennial Grass Populations At Mckenzie Flats, Sevilleta National Wildlife Refuge, New Mexico (1998 And 2001), Debra Peters, Paul Drewa, Kris Havstad, Jeffrey Herrick, Anne Cross
Sevilleta LTER Program Data
We evaluated the effects of a lightning-initiated fire on resprouting responses of perennial grasses at the population level. Following a fire in July 1998, 25 experimental plots were established on the eastern edge of MacKenzie Flats at the Sevilleta National Wildlife Refuge. Ten of these plots were located in a Bouteloua gracilis (blue grama)-dominated site, while 15 were established in an area dominated by Bouteloua eriopoda (black grama). We evaluated basal cover of perennial grasses in systematically positioned quadrats (subsamples) within plots immediately after the fire (last week of July 1998), and in September-October 2001.
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 …
Biannual Juniper Branch Demography Study At The Sevilleta National Wildlife Refuge, New Mexico (1989-1993), Diane Marshall
Biannual Juniper Branch Demography Study At The Sevilleta National Wildlife Refuge, New Mexico (1989-1993), Diane Marshall
Sevilleta LTER Program Data
No abstract provided.
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 …
Snakeweed (Gutierrezia Sarothrae) Habitat Soils Data From The Sevilleta National Wildlife Refuge, New Mexico (1984), Douglas I. Moore, Herb Grover, James Gosz
Snakeweed (Gutierrezia Sarothrae) Habitat Soils Data From The Sevilleta National Wildlife Refuge, New Mexico (1984), 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 …