@conference {50555,
	title = {Research application of ecological sites and their further development},
	booktitle = {Society for Range Management, 58th Annual Meeting and Trade Show},
	year = {2005},
	month = {February 5, 2005},
	pages = {Paper No. 162},
	address = {Fort Worth, TX},
	abstract = {A general science paradigm for rangeland research includes three basic elements: (1)  identification of key basic principles of the biophysical world, (2) development of testable explanations (e.g., models) of the biophysical world based on those principles, and (3) experimentally gathered, georeferenced information to expand and apply explanations to management relevant problems at scales that operate in real time. Within this paradigm is the recognition of three key properties of rangelands relevant to current research questions: rangelands (1) exhibit threshold behaviors in response to various drivers, (2) exhibit temporal and spatial variability in these responses, and (3) exhibit these responses within a landscape context. An ecological site basis for field research provides a useful framework for both acknowledging the importance of these principles and adhering to this paradigm. Spatially relevant and ecologically robust site descriptions of a research landscape provide a clear and repeatable basis for evaluating measured responses and a means to extrapolate those responses to similar conditions and landscapes in other areas.},
	keywords = {ecological sites, models, rangeland research, research application, site descriptions},
	author = {Kris Havstad}
}
@proceedings {51066,
	title = {Rangeland research in the Chihuahuan Desert},
	year = {2000},
	month = {03/2000},
	pages = {80-81},
	abstract = {<p>The mission of the Jornada Experimental Range is to develop new technologies for the management and remediation of desert rangelands. We are developing a manual for monitoring rangeland health. Several indicators have been examined and a number of these indicators have proven useful for monitoring purposes, e.g., size of unvegetated patch, perennial grass cover rand soil surface stability. We have worked with individual ranchers in New Mexico to test these methods and have established pilot projects on state lands to demonstrate their application to management. We are also studying prescribed burning of arid rangeland as a tool to improve degraded rangelands. The fire treatment was applied to study sites in 1999 and initial responses to fire and grazing effects will be measured in 2000. We will evaluate effects of fire on ecological processes and post-fire grazing and identify post-fire guidelines for recovery of key species in grazed Chihuahuan Desert grassland. One of our major research objectives is to develop new technologies for controlling distribution of livestock grazing rangelands. Few options presently exist for monitoring animal location and controlling animal movement to a specific area at a particular time. A method and apparatus have been developed that may allow for management of grazing livestock without ground-based fencing. The device worn by an animal incorporates a global positioning system and a geographic information system database to determine and control individual animal movements. We are field testing the ability of a third generation prototype to contain an animal in an area using bilaterally applied sensory cues. This technology could allow producers to reduce management costs, improve utilization of forage and protect ecologically sensitive areas.</p>
},
	keywords = {cattle growers, Chihuahuan Desert, livestock, rangeland research, research notes},
	url = {/files/bibliography/562.pdf},
	author = {Richard E. Estell and D.M. Anderson and J.R. Barrow and E.L. Fredrickson and Kris Havstad and Jeffrey E. Herrick and Debra C. Peters}
}
@proceedings {51395,
	title = {Reflections from nearly a century of rangeland research in the Jornada Basin},
	year = {1995},
	month = {May 23-25, 1995},
	pages = {2},
	abstract = {The 80-year record of rangeland research at the Jornada Experimental Range (JER) is representative of the history of the rangeland science discipline. The initial impetus from research was the rapid and obvious degradation of rangeland resources from misuse and drought from the late 1800{\textquoteright}s to the early part of the twentieth century. Original researchers designed pasture-scale studies to develop guidelines for seasonal stocking rates and methodologies for distributing grazing use. By the 1940{\textquoteright}s, observations on vegetation dynamics, particularly the encroachment of woody species, drove development of research efforts in range improvement techniques. By the 1970{\textquoteright}s, with rangeland management compromised by an increasingly regulated environment and a broadening of resource interests, the appropriateness of research on grazing management and forage improvement technologies was diminished. For the past 20 years rangeland research has been redirected to include more fundamental ecological investigations. The utility of the research had been questioned by various clientele. It is important that we translate this knowledge into usable technologies for monitoring existing conditions, remediation of degraded conditions,and adapting to new management conditions.},
	keywords = {drought, Jornada Basin, misuse, rangeland research},
	author = {Kris Havstad}
}
@conference {51580,
	title = {GIS applications in rangeland research on the Jornada Experimental Range},
	booktitle = {Annual Meeting, Society for Range Management},
	year = {1991},
	month = {1991},
	pages = {No. P64},
	abstract = {The Jornada Experimental Range occupies 193,000 acres of semiarid land in south-central New Mexico and has been operated continuously as a research facility since 1915. The long-term database includes forage biomass, stocking, precipitation from up to 54 gauges, and brush control measures. A geographic information system (GIS) has been used to organize, document, and provide analytical tools for this database. Basic map coverages, including roads, pastures, stock water, rain gauges, topography, soils, vegetation, and boundaries, have been converted to digital form. The GIS combines ready access to tabular data through attribute tables with a unique capability for visualization and analysis through map overlays. We have used it to analyze rainfall distributions, measure wildlife home ranges, and record aerial coverages of herbicide application. At present, it is being used to provide overlay maps for satellite imagery in support of remote sensing research. In that work, topography overlays aid in registration of the imagery and vegetation overlays are used to verify spectral image classifications and identify components of each classification. Results are expected to improve remote sensing techniques for rapid monitoring of semiarid rangeland conditions.},
	keywords = {GIS, Jornada Experimental Range, long-term database, monitoring rangeland conditions, rangeland research, remote sensing techniques},
	author = {Mason, J.B. and Gibbens, Robert P. and Kris Havstad}
}
