@conference {50133,
	title = {Shifts in species dominance at a biome transition zone: Importance of asymmetric competition to long-term trends},
	booktitle = {2009 LTER All Scientist Meeting},
	year = {2009},
	abstract = {Landscapes at the Sevilleta LTER site are dominated or codominated by two perennial grasses from different biomes, Bouteloua eriopoda (black grama) from the Chihuahuan Desert and B. gracilis (blue grama) from the shortgrass steppe, and the Chihuahuan Desert shrub Larrea tridentata (creosotebush). We used a long-term removal study to examine inter-specific interactions between these dominant species, and to determine which species would eventually dominate following the removal of the others. Plants of the dominant species were removed from 5 3m x 4m plots in 1995 at five sites that were either dominated by one of the three species (blue grama grasslands, black grama grasslands, cresootebush shrublands) or at ecotones codominated by two species (blue grama/black grama; black grama/creosotebush). Plant cover is estimated annually, and removals have been conducted annually since that time. Results show that removal of black grama has little effect on cover of blue grama whereas removal of blue grama or creosotebush results in marked increases in cover of black grama. Our results show that competition between black grama and either blue grama or creosotebush is asymmetric.  These interactions suggest that black grama dominance may be reduced in the future under climate conditions that favor growth of either blue grama or creosotebush since these species can outcompete black grama. Landscape patterns associated with soil texture can also be explained by these interspecific interactions for soil water in this semiarid environment.},
	keywords = {asymmetric, B. gracilis, black grama, Bouteloua eriopoda, creosotebush, LTER, Sevilleta},
	author = {Debra C. Peters and Jin Yao}
}
@inbook {50490,
	title = {Future Directions in Jornada Research: Applying an Interactive Landscape Model to Solve Problems},
	booktitle = {Structure and Function of a Chihuahuan Desert Ecosystem: The Jornada Basin Long-Term Ecological Research Site},
	year = {2006},
	month = {July 1, 2006},
	pages = {369-386},
	publisher = {Oxford University Press},
	organization = {Oxford University Press},
	chapter = {18},
	address = {New York, NY},
	abstract = {In this book chapter, we propose a new model of arid and semiarid landscapes that focuses explicitly on the processes and properties that generate spatial variation in ecosystem dynamics.  We are specifically interested in three interrelated aspects of landscapes: (1) feedbacks among plants, animals, and soils generated from interactions among biotic processes, a heterogeneous physical template, and the disturbance regime across a range of spatial and temporal scales, (2) neighborhood or contagious processes that generate fluxes and flows within and among spatial units, and (3) the landscape context and the condition of the study area of interest relative to its surroundings that modifies the transfers of materials.  We first describe our spatially interactive model and compare it to previous models then introduce an approach to identify the landscape locations where spatial processes and information are needed in order to understand and predict ecosystem dynamics.  The local, regional, and global implications of our interactive landscape model are also discussed.},
	keywords = {Chihuahuan Desert, Jornada Basin, LTER, synthesis book},
	url = {/files/bibliography/06-069.pdf},
	author = {Debra C. Peters and W. H. Schlesinger and Jeffrey E. Herrick and L. Huenneke and Kris Havstad},
	editor = {Kris Havstad and L. Huenneke and W. H. Schlesinger}
}
@inbook {50487,
	title = {Plant Communities in the Jornada Basin: The Dynamic Landscape},
	booktitle = {Structure and Function of a Chihuahuan Desert Ecosystem: The Jornada Basin Long-Term Ecological Research Site},
	year = {2006},
	month = {July 1, 2006},
	pages = {211-231},
	publisher = {Oxford University Press},
	organization = {Oxford University Press},
	chapter = {10},
	address = {New York, NY},
	abstract = {Plant communities of the Jornada Basin LTER are characteristic of the northern Chihuahuan Desert, both in structure and dynamics.  Five major vegetation types are often distinguished that differ in plant species cover and composition, as well as other factors, such as animal populations, soil properties, and elevation.  Similar to many other parts of the Chihuahuan Desert, these plant communities have experienced major shifts in vegetation over the past 50-150 years.  The most dramatic changes in vegetation have occurred as a result of woody plant encroachment into perennial grasslands.  In this chapter, we describe the characteristics of each vegetation type and the documented changes in each type at the Jornada.  We also discuss the key drivers (small and larger animal activity, drought, fire, and directional changes in climate) influencing these vegetation dynamics.},
	keywords = {Chihuahuan Desert, Jornada Basin, LTER, synthesis book},
	url = {/files/bibliography/06-061.pdf},
	author = {Debra C. Peters and Gibbens, Robert P.},
	editor = {Kris Havstad and L. Huenneke and W. H. Schlesinger}
}
@conference {51105,
	title = {Cross-site comparisons of climate and vegetation for two semiarid grasslands and their ECOTONE},
	booktitle = {85th Annual Meeting, Ecological Society of America},
	year = {2000},
	month = {August 6-10, 200},
	pages = {372},
	address = {Snowbird, UT},
	abstract = {The objective of this ongoing work is to compare ecosystem characteristics of three LTER grassland sites located along a north-south aridity gradient. These sites share some characteristics and differ in others that are expected to be important to their ability to respond to environmental drivers, including climate change and land use.  The SGS-LTER in northern  Colorado is representative of the shortgrass steppe and is dominated by th long-lived bunchgrass, Bouteloua gracilis (blue grama).  Grasslands at the JER-LTER in southern New Mexico are dominated by the short-lived stoloniferous grass, Bouteloua eriopoda (black grama).  Landscapes at the SEV-LTER in central New Mexico consist of patches that are dominated or codominated by these two species.  Regional analyses of the climate and simulated recruitment showed important differences between biomes that may account, at least in part, for observed patterns in dominance and species  diversity.  Field studies of seed production and seed storage in the soil, as well as simulation analyses, showed the responses of these species at their ecotone are not predictable based on responses within the biomes where they dominate.},
	keywords = {characteristics, ecosystem, grassland, LTER},
	author = {Debra C. Peters}
}
