This study was designed to provide a physical and ecological analysis of paired watersheds in the semi-arid western juniper (Juniperus occidentalis) woodlands of Central Oregon. Instrumentation and monitoring was accomplished in Jensen and Mays watersheds as the preliminary portion of a longer term project. Instrumentation was designed to address changes in the erosional processes, hydrology, and vegetation on a watershed scale. Instrumentation was setup to assist in the comparison and calibration of water flow out of the watersheds. This information will be used in the long-term study in conjunction with the treatment of the western juniper overstory on one of the watersheds. Determination of the study area in each watershed required extensive reconnaissance with the assistance of aerial photos, topographic maps, and Geographic Information Systems (GIS). Mapping of the study areas was accomplished with GIS and Global Positioning Systems (GPS). Watersheds were paired according to specific characteristics that influence treatment effects. Flume types were chosen with respect to precipitation intensity and frequency with placement being more a function of watershed topography and channel morphology. Upland sedimentation and erosion measurement required intense acknowledgement of both abiotic as well as biotic characteristics. Analysis showed the watersheds to be similar in size, percent juniper, grass and bare soil cover, topography, and precipitation frequency and intensity. Differences were obtained relative to erosional processes, area of different soil types and channel discharge. Further monitoring and calibration should provide greater insight into the comparison of these components of the study. / Graduation date: 1996

Current research indicates that the expansion of western juniper can inhibit soil water retention, storage and prolonged releases from watersheds. This phenomenon is of great importance in eastern Oregon, as western juniper is encroaching into sagebrush/grass communities with a correlated reduction in herbaceous ground cover, resulting in reduced infiltration rates and increased soil loss. A paired watershed study for the purpose of monitoring water quality/quantity as affected by western juniper in the Camp Creek drainage, a tributary to the Crooked River, was established in 1994. Monitoring methods consisted of annual and semiannual measurements of hillslope soil movement, channel morphology, including total cross-sectional area, scour and deposition, channel discharge, depth to groundwater, and precipitation. Channel discharge was established using a 3,0 H-flume with a pressure transducer and stilling well and data logger. Changes in channel morphology were determined using 25 permanent, channel cross-section plots per watershed. Hillslope erosion processes were determined using 12 transects of 3 sediment stakes per watershed, located within gullies of subwatersheds. Data showed the two study areas to be well correlated with regards to soil movement, both within the main channels and in the subwatersheds (hillslopes). Some of the geomorphometric properties are similar (not statistically different) and differences in other parameters can be explained. Channel discharge appears to be significantly different in intensity, frequency, and duration of flow. These differences in surface discharge may be explained as further data collection of subsurface flow analysis in conjunction with sampling of springs located in each watershed are conducted. / Graduation date: 2005

Thirty three species of ammonites are recorded from the composite type section of the Weberg Member of the Snowshoe Formation in the Suplee area, Grant County, Oregon. Holcophylloceras burkei, Euhoploceras westi, E. tubereulosum and Strigoceras taylori are described as new, while four new species belonging to the genera Sonninia [?], Bradfordia, Pseudotoites and Witchellia are not formally named. Three ammonite zonules characterize the ammonite sequence of the type Weberg composite section. The sequence correlates with parts of the standard lower and middle Bajocian (Jurassic) of northwestern Europe. In addition, four associations (paleo-communities) of benthic mega invertebrates, the Gervillia, Protocardia, Isocyprina and Bositra buahii associations are delineated. The type Weberg composite section is a record of a local marine transgression westward onto an island system. The section also represents sedimentation over an irregular pre-Snowshoe topographic high, and indicates a progressive change from proximal to distal source of pre-Snowshoe sediments, from high to low energy conditions, and perhaps a slight deepening of the ocean bottom. Ammonites are rare in the lower division of the Weberg Member, locally present in fine sandy limestones of the lower part of the upper division, abundant and most diverse in silt-rich, clay-poor limestones of the upper part of the upper division, and locally abundant in mudstones of the Warm Springs Member. Recurrent associations of certain ammonite species, strong correlation of the associations with lithofacies and biofacies, and pervasive faunal differences of ammonites between facies indicate in general that the distributional patterns of the ammonites reflect spatial life-habitats. The spotty yet widespread geographic occurrence of several ammonite species suggest they had undergone extensive planktic dispersal, thus ocean currents probably played an important role in their distributional patterns.

Digitized by Kansas Correctional Industries

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In the post-Civil War Southwest, the United States Army utilized civilians and Indians as scouts. As the mainstay of the reconnaissance force, enlisted Indians excelled as trackers, guides, and fighters. General George Crook became the foremost advocate of this service. A little-known aspect of the era was the international controversy created by the activities of native trackers under the 1882 reciprocal hot pursuit agreement between Mexico and the United States. Providing valuable information on Army scouts are numerous government records which include the Annual Report of the Secretary of War from 1866 to 1896 and Foreign Relations of the United States for 1883 and 1886. Memoirs, biographies, and articles in regional and national historical journals supplement government documents.

No description available.