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Articles 31 - 60 of 182
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Small Mammal Exclosure Study (Smes) Leaf Litter Study In The Chihuahuan Desert Grassland And Shrubland At The Sevilleta National Wildlife Refuge, New Mexico, David Lightfoot
Sevilleta LTER Program Data
The purpose of this study is to determine whether or not the activities of small mammals regulate plant community structure, plant species diversity, and spatial vegetation patterns in Chihuahuan Desert shrublands and grasslands. What role if any do indigenous small mammal consumers have in maintaining desertified landscapes in the Chihuahuan Desert? Additionally, how do the effects of small mammals interact with changing climate to affect vegetation patterns over time? This is data for cover of dead plant leaf litter accumulations on soil surfaces measured on each of the SMES study plots. Leaf litter cover was measured from each of the …
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
Nasa Sun Photometry Data At The Sevilleta National Wildlife Refuge, New Mexico (1994-Present), Douglas I. Moore
Nasa Sun Photometry Data At The Sevilleta National Wildlife Refuge, New Mexico (1994-Present), Douglas I. Moore
Sevilleta LTER Program Data
A sun photometer was installed at the Sevilleta Field Station in 1994.It is part of a network of such instruments deployed around the world within a program called AERONET (AErosol RObotic NETwork http://aeronet.gsfc.nasa.gov/new_web/system_descriptions.html) established by NASA to obtain a measure of atmospheric aerosols around the globe. Individual photometer units are designed to view the sun and sky at preprogrammed intervals throughout the day for the measurement of aerosol optical thickness, water vapor amounts, ozone levels, particle size distribution, aerosol scattering, phase function, and single scattering albedo. These measurements can also be used to radiometrically correct satellite imagery. The unit consists …
Time Domain Reflectometry At The Sevilleta National Wildlife Refuge, New Mexico (1996-2005), James Gosz
Time Domain Reflectometry At The Sevilleta National Wildlife Refuge, New Mexico (1996-2005), James Gosz
Sevilleta LTER Program Data
This file contains hourly time-domain reflectometry (TDR) soil moisture data for 1996-2005. A key factor in a spatially explicit water-balance model is a measure of moisture in the soils over time. This metric is crucial for both calibration and validation of such a model. One of the best methods of measuring soil moisture on a continuous basis is TDR. Therefore, a network of TDR soil moisture sensors was installed at all meteorological stations on the Sevilleta National Wildlife Refuge. At two of the sites the sensors were measured on an hourly basis in conjunction with the meteorological variables. At the …
Pinon-Juniper Plant Dimension Study At The Sevilleta National Wildlife Refuge, New Mexico (1989-1999), Jim Gosz
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 …
Sierra Ladrones Study Basin (Slsb) Sediment Micro Climate Research In Watersheds At The Sevilleta National Wildlife Refuge, New Mexico (1992-1995), Manuel Molles, Douglas I. Moore
Sierra Ladrones Study Basin (Slsb) Sediment Micro Climate Research In Watersheds At The Sevilleta National Wildlife Refuge, New Mexico (1992-1995), Manuel Molles, Douglas I. Moore
Sevilleta LTER Program Data
To support the hydrology studies in the Sierra Ladrones Study Basin, a network of moisture potential sensors and temperature sensors wereinstalled in the stream-channel sediments and adjacent soils atvarious locations up thru the watersheds in 1992. Two rain gaugeswere also added up through the watershed gradient to complement therain gauge on the weather station (Met43) at the base of the watershedto provide a better measure of moisture inputs to these watersheds.This file contains data for 1992 to 1994.
Pinon Branch Demography Study At The Sevilleta National Wildlife Refuge, New Mexico (1989-1993), Diane Marshall
Pinon Branch Demography Study At The Sevilleta National Wildlife Refuge, New Mexico (1989-1993), Diane Marshall
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 …
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 …
Pino Gate Prairie Dog Study: Landscape-Scale Grasshopper Plot Data From The Sevilleta National Wildlife Refuge, New Mexico (2000-2002), Ana Davidson, David Lightfoot
Pino Gate Prairie Dog Study: Landscape-Scale Grasshopper Plot Data From The Sevilleta National Wildlife Refuge, New Mexico (2000-2002), Ana Davidson, David Lightfoot
Sevilleta LTER Program Data
Keystone species have large impacts on community and ecosystem properties, and create important ecological interactions with other species. Prairie dogs (Cynomys spp.) and banner-tailed kangaroo rats (Dipodomys spectabilis) are considered keystone species of grassland ecosystems, and create a mosaic of unique habitats on the landscape. These habitats are known to attract a number of animal species, but little is known about how they affect arthropod communities. Our research evaluated the keystone roles of prairie dogs and kangaroo rats on arthropods at the Sevilleta National Wildlife Refuge in central New Mexico, USA. We evaluated the impacts of these rodents on ground-dwelling …
Pino Gate Prairie Dog Study: Mound-Scale Vegetation Plot Data From The Sevilleta National Wildlife Refuge, New Mexico (2000-2002), Ana Davidson, David Lightfoot
Pino Gate Prairie Dog Study: Mound-Scale Vegetation Plot Data From The Sevilleta National Wildlife Refuge, New Mexico (2000-2002), Ana Davidson, David Lightfoot
Sevilleta LTER Program Data
Prairie dogs (Cynomys spp.) and banner-tailed kangaroo rats (Dipodomys spectabilis) are considered keystone species of grassland ecosystems, and co-occur in the arid grasslands of the southwestern United States and in Mexico. Their keystone status is attributed primarily to the effects of their burrowing and foraging behavior, but they differ ecologically in several important respects. We studied the comparative functional roles of these species where they co-occur at the Sevilleta National Wildlife Refuge, New Mexico, focusing on their impacts on grassland vegetation. We found that vegetation cover, structure, and species richness varied across a gradient extending out from the mound centers, …
Small Mammal Mark-Recapture Population Dynamics At Core Research Sites At The Sevilleta National Wildlife Refuge, New Mexico (1989 - Present), Seth Newsome
Sevilleta LTER Program Data
This file contains mark/recapture trapping data collected from 1989-2012 on permanently established web trapping arrays at 8 sites on the Sevilleta NWR. At each site 3 trapping webs are sampled for 3 consecutive nights in spring and fall. Not all sites have been trapped for the entire period. Each trapping web consists of 145 rebar stakes numbered from 1-145. There are 148 traps deployed on each web: 12 along each of 12 spokes radiating out from a central point (stake #145) plus 4 traps at the center point. The trapping sites are representative of Chihuahuan Desert Grassland, Chihuahuan Desert Shrubland, …
Pino Gate Prairie Dog Study: Landscape-Scale Vegetation Plot Data From The Sevilleta National Wildlife Refuge, New Mexico (1999-2002), Ana Davidson, David Lightfoot
Pino Gate Prairie Dog Study: Landscape-Scale Vegetation Plot Data From The Sevilleta National Wildlife Refuge, New Mexico (1999-2002), Ana Davidson, David Lightfoot
Sevilleta LTER Program Data
Prairie dogs (Cynomys spp.) and banner-tailed kangaroo rats (Dipodomys spectabilis) are considered keystone species of grassland ecosystems, and co-occur in the arid grasslands of the southwestern United States and in Mexico. Their keystone status is attributed primarily to the effects of their burrowing and foraging behavior, but they differ ecologically in several important respects. We studied the comparative functional roles of these species where they co-occur at the Sevilleta National Wildlife Refuge, New Mexico, focusing on their impacts on grassland vegetation. We found that vegetation cover, structure, and species richness varied across a gradient extending out from the mound centers, …
Pino Gate Prairie Dog Study: Mound-Scale Grasshopper Plot Data From The Sevilleta National Wildlife Refuge, New Mexico (2000-2001), Ana Davidson, David Lightfoot
Pino Gate Prairie Dog Study: Mound-Scale Grasshopper Plot Data From The Sevilleta National Wildlife Refuge, New Mexico (2000-2001), Ana Davidson, David Lightfoot
Sevilleta LTER Program Data
Keystone species have large impacts on community and ecosystem properties, and create important ecological interactions with other species. Prairie dogs (Cynomys spp.) and banner-tailed kangaroo rats (Dipodomys spectabilis) are considered keystone species of grassland ecosystems, and create a mosaic of unique habitats on the landscape. These habitats are known to attract a number of animal species, but little is known about how they affect arthropod communities. Our research evaluated the keystone roles of prairie dogs and kangaroo rats on arthropods at the Sevilleta National Wildlife Refuge in central New Mexico, USA. We evaluated the impacts of these rodents on ground-dwelling …
Plant Litter Decomposition At The Sevilleta National Wildlife Refuge, New Mexico (1990-1998), Jim Gosz
Plant Litter Decomposition At The Sevilleta National Wildlife Refuge, New Mexico (1990-1998), Jim Gosz
Sevilleta LTER Program Data
The long-term goal of the decomposition study was to document the effects of climate variation on decomposition of major plant litter-types. The project began in 1989 and underwent changes of locations and litter types. The long-term litter types included black grama, Indian rice grass, juniper, and creosote. Â Mass loss of the litter types can be compared to precipitation and other meteorological factors obtained at nearby locations.
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 …
Below-Ground Net Primary Production (Bnpp): Root Ingrowth Donuts In Chihuahuan Desert Grassland And Creosote Shrubland At The Sevilleta National Wildlife Refuge, New Mexico (2005-Present), Scott Collins
Sevilleta LTER Program Data
In 2005, annually harvested root ingrowth donut structures were co-located with previously established mini-rhizotron tubes established at four sites on McKenzie Flats located on the east side of Sevilleta NWR: 10 replicate structures in both burned and unburned blue and black grama dominated grassland plots at Deep Well, 10 replicates each on nitrogen fertilization plots and respective control plots on McKenzie Flats(20 total), 10 replicates in creosote dominated shrubland at the Five Points Creosote Core site and in 2011, 13 structures were put in the Monsoon site. Roots and soil are harvested annually in late fall after the growing season, …
Pino Gate Prairie Dog Study: Landscape-Scale Ground-Dwelling Arthropod Plot Data From The Sevilleta National Wildlife Refuge, New Mexico (2000-2001), Ana Davidson, David Lightfoot
Pino Gate Prairie Dog Study: Landscape-Scale Ground-Dwelling Arthropod Plot Data From The Sevilleta National Wildlife Refuge, New Mexico (2000-2001), Ana Davidson, David Lightfoot
Sevilleta LTER Program Data
Keystone species have large impacts on community and ecosystem properties, and create important ecological interactions with other species. Prairie dogs (Cynomys spp.), and banner-tailed kangaroo rats (Dipodomys spectabilis) are considered keystone species of grassland ecosystems, and create a mosaic of unique habitats on the landscape. These habitats are known to attract a number of animal species, but little is known about how they affect arthropod communities. Our research evaluated the keystone roles of prairie dogs and kangaroo rats on arthropods at the Sevilleta National Wildlife Refuge in central New Mexico, USA. We evaluated the impacts of these rodents on ground-dwelling …
Pino Gate Prairie Dog Study: Mound-Scale Ground-Dwelling Arthropod Plot Data From The Sevilleta National Wildlife Refuge, New Mexico (2000-2001), Ana Davidson, David Lightfoot
Pino Gate Prairie Dog Study: Mound-Scale Ground-Dwelling Arthropod Plot Data From The Sevilleta National Wildlife Refuge, New Mexico (2000-2001), Ana Davidson, David Lightfoot
Sevilleta LTER Program Data
Keystone species have large impacts on community and ecosystem properties, and create important ecological interactions with other species. Prairie dogs (Cynomys spp.) and banner-tailed kangaroo rats (Dipodomys spectabilis) are considered keystone species of grassland ecosystems,and create a mosaic of unique habitats on the landscape. These habitats are known to attract a number of animal species, but little is known about how they affect arthropod communities. Our research evaluated the keystone roles of prairie dogs and kangaroo rats on arthropods at the Sevilleta National Wildlife Refuge in central New Mexico, USA. We evaluated the impacts of these rodents on ground-dwelling arthropod …
Net Primary Productivity (Npp) Weight Data At The Sevilleta National Wildlife Refuge, New Mexico (1999 - Present), Douglas I. Moore
Net Primary Productivity (Npp) Weight Data At The Sevilleta National Wildlife Refuge, New Mexico (1999 - Present), Douglas I. Moore
Sevilleta LTER Program Data
Several long-term studies at the Sevilleta LTER measure net primary production (NPP) across ecosystems and treatments. 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 (ANPP) is the change in plant biomass, including loss to death and decomposition, over a given period of time. To measure this change, vegetation variables, including species composition and the cover and height of individuals, are sampled up …
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 …
Livestock Exclosure Nutrient Study From A Chihuahuan Desert Grassland At The Sevilleta National Wildlife Refuge, New Mexico (2003), Lydia Zeglin
Sevilleta LTER Program Data
Data on soil characteristics and dominant grass and soil chemical composition gathered on active rangeland, livestock exclosures on active rangeland, and the Sevilleta NWR.
2003 Prescribed Burn Effect On Chihuahuan Desert Grasses And Shrubs At The Sevilleta National Wildlife Refuge, New Mexico: Grass Recovery Study (2003-2012), Esteban Muldavin
2003 Prescribed Burn Effect On Chihuahuan Desert Grasses And Shrubs At The Sevilleta National Wildlife Refuge, New Mexico: Grass Recovery Study (2003-2012), Esteban Muldavin
Sevilleta LTER Program Data
The U.S. Fish and Wildlife's plan to apply a prescribed burn to a large portion of Mckenzie Flats was deemed an opportunity to study the effects of fire on vegetation at the boundary between shrubland and grassland. This study actually was undertaken on an area that had prescribed fire applied to 8 of 16 (300 m x 300 m) plots 10 years before in 1993. This previous study had also examined the effects of fencing to exclude the indigenous prong-horn antelope. In the 2003 study the prescribed fire was applied to the northeastern half of the 16 plots while the …
Ecological Effects Of Prescribed Fire On Soils In A Chihuahuan Desert Grassland At The Sevilleta National Wildlife Refuge, New Mexico (2003), Lydia Zeglin
Sevilleta LTER Program Data
Fire resulting from natural ignition has become a more common event on the Sevilleta National Wildlife Refuge (NWR) since the exclusion of domesticated livestock. Efforts to return fire to the native landscape has resulted in the use of prescribed fire during periods that meet burn prescriptions. A prescribed fire was performed on the Sevilleta NWR in June 2003. Among the measured site and burn characteristics that were measure, this project sampled soils before and after the fire from 5 previously-sampled locations that were burned in June 2003 and from 5 newly established locations that served as controls. The controls were …
Core Site Phenology Study From The Chihuahaun Desert Grassland And Shrubland At The Sevilleta National Wildlife Refuge, New Mexico (2000-Present ), Karen Wright
Sevilleta LTER Program Data
Plant phenology or life-history pattern changes seasonally as plants grow, mature, flower, and produce fruit and seeds. Plant phenology follows seasonal patterns, yet annual variation may occur due to annual differences in the timing of rainfall and ambient temperature shifts. Foliage growth and fruit and seed production are important aspects of plant population dynamics and food resource availability for animals. The purpose of this study is to assess plant phenology patterns across a series of biotic communities that represent an environmental moisture gradient. These communites include: Chihuhuan Desert creosotebush shrubland, Chihuahuan Desert black grama grassland, and blue grama grassland. Plant …
Monsoon Rainfall Manipulation Experiment (Mrme) Meteorology Data From A Chihuahuan Desert Grassland At The Sevilleta National Wildlife Refuge, New Mexico (2010 - 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 NPP and soil respiration by providing …
Ecosystem-Scale Rainfall Manipulation In A Pinon-Juniper Woodland: Volumetric Water Content (Vwc) Profile Data (2009-2013 ), William Pockman, Nathan Mcdowell
Ecosystem-Scale Rainfall Manipulation In A Pinon-Juniper Woodland: Volumetric Water Content (Vwc) Profile Data (2009-2013 ), William Pockman, Nathan Mcdowell
Sevilleta LTER Program Data
Climate models predict that water limited regions around the world will become drier and warmer in the near future, including southwestern North America. We developed a large-scale experimental system that allows testing of the ecosystem impacts of precipitation changes. Four treatments were applied to 1600 m2 plots (40 m × 40 m), each with three replicates in a piñon pine (Pinus edulis) and juniper (Juniper monosperma) ecosystem. These species have extensive root systems, requiring large-scale manipulation to effectively alter soil water availability. Treatments consisted of: 1) irrigation plots that receive supplemental water additions, 2) drought plots that receive 55% of …
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 …
Coyote Scat Surveys In Chihuahuan Desert Grassland And Shrubland Sites, Spring, Summer And Fall At The Sevilleta National Wildlife Refuge, New Mexico (2008-2009), Virginia Seamster
Coyote Scat Surveys In Chihuahuan Desert Grassland And Shrubland Sites, Spring, Summer And Fall At The Sevilleta National Wildlife Refuge, New Mexico (2008-2009), Virginia Seamster
Sevilleta LTER Program Data
This data set contains information regarding carnivore scat surveys that were performed at sites in grama grassland and both creosote and mesquite shrubland habitats at the Sevilleta NWR. A total of nine surveys were carried out along road-based transects, each of which is a mile long, during one season in 2008 (June-July) and three seasons in 2009: spring (April-May), summer (July-August), and fall (October-November). There were 10 transects in grassland areas and 10 in shrubland areas in 2008. All 20 transects, as well as two additional transects in grassland areas, were surveyed in 2009. For more information on the structure …
Monsoon Rainfall Manipulation Experiment (Mrme): Soil Carbon Dioxide Concentrations From The Sevilleta National Wildlife Refuge, Nm (2010 - 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. These soil carbon dioxide data were collected at three depths.
Extreme Drought In Grassland Ecosystems (Edge) Net Primary Production Quadrat Data At The Sevilleta National Wildlife Refuge, New Mexico (2012-Present), Scott Collins
Sevilleta LTER Program Data
EDGE is located at six grassland sites that encompass a range of ecosystems in the Central US - from desert grasslands to short-, mixed-, and tallgrass prairie. We envision EDGE as a research platform that will not only advance our understanding of patterns and mechanisms of ecosystem sensitivity to climate change, but also will benefit the broader scientific community. Identical infrastructure for manipulating growing season precipitation will be deployed at all sites. Within the relatively large treatment plots (36 m2), we will measure with comparable methods, a broad spectrum of ecological responses particularly related to the interaction between carbon fluxes …