A Paleoclimatic and Paleohydrologic Reconstruction of Pleistocene Fossil Lake, Oregon

Fossil Lake, Oregon, is a Pleistocene lacustrine basin (~ 650-13 ka) in the northwestern part of the Great Basin best known for its abundant and diverse vertebrate assemblage. Multi-proxy studies using lithostratigraphy, fossil ostracode faunal assemblages, and ostracode stable isotope geochemistry from cores taken at Fossil Lake record changes in paleoenvironment, paleoclimate, and paleohydrochemistry. From lithostratigraphic analysis, the depositional sequence was subdivided into eight lithosomes composed of fining-upward sequences, bounded by unconformities, indicating that the lake underwent several lake-level excursions. The two oldest lithosomes, ~ 646-610 ka, record deep lake environments deposited during wet conditions and correspond to marine oxygen isotope stages (MIS) 16 and 15. A major unconformity from ~ 610 ka until ~ 71 ka interrupts the record. Lithosomes III and IV, ~ 71-47 ka, were deposited during wet conditions that produced cool to cold, deep, alkaline lakes that were fresh to slightly saline and corresponds to MIS 4 and 3, respectively. Lithosome IV also records a short period of drier conditions with decreased lake level and increased methanogenesis rates that produced highly enriched &delta13C values in ostracodes. Lithosome V, VI, and VII, ~ 47-28 ka, were deposited during dry conditions that produced cold, shallow, alkaline lakes and correspond to MIS 3. Salinities ranged from saline to slightly saline in Lithosomes V and VI to relatively fresh in Lithosome VII. Wet conditions return abruptly in Lithosome VIII (~ 15 ka) that records a deep, cold lake environment and corresponds to MIS 2. The repetitive cycles of flooding, lake stand, and desiccation indicates that Fossil Lake was highly susceptible to changes in precipitation and evaporation ratios, suggesting that climate forcing played a major role in the lake-level fluctuations. Over all, high and very high stands coincide with glacial cycles in MIS 16, 4, and 2

Exploring the Process, Models, and Outcomes of Hospital-Public Health Partnerships

Health care reform has resulted in changes throughout the health system, including the Affordable Care Act (ACA) requirement that hospitals conduct community health needs assessments, taking into greater consideration the public health of their respective communities. This has led to growing strategies to develop partnerships between hospitals and public health (PH) as a way to meet these needs1. Meantime, there is a need for data on Hospital-PH partnerships, due to the growing emphasis that these types of partnerships get implemented in practice. In this paper we analyze a secondary data set to explore how hospitals and public health have engaged in partnerships prior to the ACA. We asked “How amenable have hospitals and public health agencies been to forming partnerships?” We found that while Hospitals traditionally have fewer partners, contribute fewer resources, and report fewer outcomes, they tend to report high perceptions of value and more frequent, complex partnerships. The impact of these results are important to efforts to build an evidenced-based foundation by which hospital and public health personnel can develop skills to manage these complex relationships

Early Permian Carbonitidae (Ostracoda): ontogeny, affinity, environment and systematics

http://www.geolsoc.org.uk/gsl/publications/journal

New Perspectives on the “Silo Effect” – Initial Comparisons of Network Structures across Public Health Collaboratives

Objectives: We explored to what extent "silos" (preferential partnering) persist in interorganizational boundaries despite advances in working across boundaries. We focused on organizational homophily and resulting silo effects within networks that might both facilitate and impede success in public health collaboratives (PHCs). Methods: We analyzed data from 162 PHCs with a series of exponential random graph models to determine the influence of uniform and differential homophily among organizations and to identify the propensity for partnerships with similar organizations. Results: The results demonstrated a low presence (8%) of uniform homophily among networks, whereas a greater number (30%) of PHCs contained varying levels of differential homophily by 1 or more types of organization. We noted that the higher frequency among law enforcement, nonprofits, and public health organizations demonstrated a partner preference with similar organizations. Conclusions: Although we identified only a modest occurrence of partner preference in PHCs, overall success in efforts to work across boundaries might be problematic when public health members (often leaders of PHCs) exhibit the tendency to form silos

Student identification with the Consumer Relations Board at Kansas State University

Digitized by Kansas Correctional Industrie

Factors Affecting BSW Students' Choices in Initial Field Placement: A Racial/Ethnic Comparison

Field placement experiences have long been viewed as a critical component of social work training. However, little research has focused on choice of initial undergraduate field placement experience and on factors affecting this choice, particularly as they relate to race or ethnicity. This study addressed this research gap in initial field placements for students seeking an undergraduate degree. Data from a survey of 220 students, collected through six semesters from their initial field placement course, are analyzed. Results suggest that students of color differ significantly from their White counterparts not only in choice of field placement but also in certain aspects of the decision process related to this choice. Implications for social work field education are discussed.</jats:p

Early Permian Carbonitidae (Ostracoda): ontogeny, affinity, environment and systematics

Abstract. An assemblage of four Carbonita species was deposited with charophytes, lungfishes and lysorophids in a lenticular mudstone from a Cisuralian freshwater pond deposit from the lowest Permian. Samples contained few adult Carbonita, indicating perhaps a stressed and unstable environment. Two species new to science, C. ovata n. sp. and C. triangulata n. sp., occur together with C. evelinae and C. pungens. Morphological characters of these Carbonita suggest an affinity with the Healdioidea, marine taxa that are probably ancestral to the Carbonitidae. The muscle-scar patterns of Carbonitidae, which comprise closely grouped circular bundles of secondary muscle scars, resemble closely those of Healdioidea and not those of Cypridoidea and Cytheroidea, whose muscle scars are fewer and spaced further apart. The muscle-scar pattern of C. pungens, described here for the first time, is a circular scar with an ascertainable pattern of secondary scars. C. pungens and species of Darwinula are morphologically similar, but study of additional specimens of C. pungens with better-preserved muscle scars is essential to determine their evolutionary affinity. </jats:p