A graphical system was developed to represent airborne air quality monitoring data. The representations developed included three—dimensional spatial mapping, percentage and frequency distributions, and altitude—based scatter diagrams. Elementary statistical analyses and correlations of the measured parameters were also performed. Data gathered in eight flights to the Shenandoah National Park during the summer months of 1981 were analyzed. Sulfur dioxide levels were found to be in the 5 - 15 ppb range, nitrogen oxides were in the 4 — 10 ppb range, nitrous oxide was in the 2 - 5 ppb range, nitrogen dioxide was in the 2 - 5 ppb range, ozone was in the 35 - 70 ppb range and visual range was in the 5 — 90 mile range. The data representation system proved to be an easier and more useful method of displaying the data than the previously existing system. / Master of Science

a pause at the end of an architectural beginning a place to synthesize ideas and preoccupations a study of time and movement A design for a magical world— the meeting of land and water / Master of Architecture

Master of Landscape Architecture / Department of Landscape Architecture/Regional and Community Planning / Howard Hahn / Public parks provide essential green space for people to congregate, exercise, and respite from the city. Urban public parks in the United States began with Frederick Law Olmsted and Calvert Vaux’s Central Park in the mid-1800s (Cranz & Boland, 2004). Since then, planners and designers continue to design urban parks to best serve residents. Therefore, understanding user recreation patterns and preferences is critical for urban park design. Several factors influence leisure styles, including ethnicity, that need to be considered by planners and designers. This study examines parks in South Omaha, Nebraska. Residents living in this area make up over ten different ethnic groups. Notably, Omaha’s largest Hispanic community concentration resides in South Omaha. Through quantitative and qualitative research including site analysis, a literature search, precedent studies, and community interviews, important design considerations emerged. This project presents design considerations and a conceptual redesign for two urban parks in South Omaha: Lynch Park and Spring Lake Park. The designs incorporated the leisure preferences and recreation patterns as revealed through interviews of the majority Hispanic community as well as European, Asian, and African minority ethnic groups. Precedent studies and literature research further informed redesign decisions by providing background knowledge on leisure research, design form, and demographic trends. Nevertheless, urban parks should ultimately respond to the users, regardless of cultural backgrounds, to meet the needs and requirements of all South Omaha residents.

Master of Landscape Architecture / Department of Landscape Architecture/Regional and Community Planning / Mary C. Kingery-Page / Temporary landscapes are an emerging project type with in the field of landscape architecture. Pop-up parks, parklets, and temporary art installations have been gaining media attention and changing notions of open space. Landscape architects need to take a more active role in the planning, design, and execution of these temporary landscapes. Peter Bishop describes temporary land use as “an intentional phase” where the “time-limited nature of the use is generally explicit” (Bishop, 2012, p. 5). This research refines Bishop’s definition by stating temporary landscapes must be intentionally time limited designs of open space. Currently the unorganized variety of projects has impeded landscape architects’ ability to evaluate and learn from these spaces. This research project seeks to understand and synthesize different characteristics of temporary landscapes. A typology was developed by identifying key themes in literature, composing a carefully curated series of precedent studies, participating in the development of a temporary pop-up park in Wichita, Kansas, and developing a matrix that identifies the relationships between temporal types. The products of this research will help planners and designers develop more successful and intentional temporally limited designs.

Master of Landscape Architecture / Department of Landscape Architecture/Regional and Community Planning / Mary C. Kingery-Page / Placemaking for Socially Resilient Site Design is a project focused on clarifying and characterizing social resilience. This project used ethnographic methods to answer the question: what qualities of place affect the downtown community’s desires for a temporary landscape in Wichita, Kansas? Through literature review this project further defined what social resilience meant at the site scale. Social resilience was operationalized as social systems ability to maintain function while promoting social trust, reciprocity, collaboration, and character between networks of varying scales (Putnam 1995). Literature review provided the foundational knowledge on creative placemaking, a design strategy used to improve community prosperity through a sense of place and imageability (Artscape 2014). Place is determined by a user’s surroundings, and more importantly the memory of social engagement on site (Fleming 2007). Creative placemaking design strategies are valuable and specific to location. Therefore, it was imperative I incorporated ethnographic research methods to answer my focus question. Ethnographic research investigates cultural patterns and themes expressed or observed by a community (LeCompte et al. 1991). This form of research is unconventional for the typical site design process in landscape architecture. However, it proved to be effective in determining the most successful site use and organization. The ethnographic research allowed me to inventory and document user’s most desirable site needs and programming through the stakeholder design charrette and individual interviews. In November 2014 the Wichita Downtown Development Cooperation requested our team as a partner in developing a temporary landscape for downtown Wichita, Kansas. The site was already selected with the intention of becoming Douglas Avenue Pop-Up Park. Funding for this project was awarded to the WDDC in the form of a $146,025 grant from the Knight Foundation. Using an iterative community feedback process with five ethnographic interviews, I reevaluated the WDDC’s initial Pop-Up Park plan resulting from a community charrette. Recurring themes from interviews were identity crisis of downtown, outdoor preference, lack of residential amenities, negative perception of active and public transit, downtown lifestyle, Wichita as a place for families, and lack of nighttime activation. Using the recurring interview themes, I proposed a plan conducive to social resilience.

Master of Regional and Community Planning / Department of Landscape Architecture/Regional and Community Planning / Hyung Jin Kim / Children’s play is partially satisfied through provision of public playgrounds with manufactured playground equipment in urban settings in the U.S., however, manufactured playground equipment is often criticized for its monotonous play equipment and is considered to be the primary cause of low playground utilization and dissatisfaction by many researchers (Hart, 2002; Beckwith, 2000; Cunningham & Jones, 1999; Davies, 1996; Masters, 2011). This study selected an urban park playground, a community playground, and a neighborhood park playground with manufactured equipment in the city of Manhattan as study sites. The purpose of this study is to examine utilization of the current playground areas and equipment—specifically by examining playground satisfaction levels and utilization frequency, and playground equipment satisfaction and utilization frequency to reveal playground utilization issues. A playground field audit and an on-site visitor survey were used to collect data. This study found (a) study playgrounds are underutilized among 6-to-10 and 11-to-15 age groups, (b) correlations exist between play equipment utilization frequencies and satisfaction ratings for most play equipment, and (c) no correlation exists between playground utilization frequency and playground satisfaction ratings. Results also revealed that (d) rare and occasional playground visitors are more likely to be attracted to play equipment with moving parts, higher physical challenges, and creative designs. Playground utilization rates are at current levels partially due to the rigid demand for playground use and play equipment. Although this study showed that 57% of survey participants were satisfied with the manufactured play equipment overall, play equipment should still be carefully selected and installed in consideration of different age groups, and visitors’ needs and characteristics; and more creative and cutting-edge play equipment should be considered for future playground improvements.

Since 2008, large numbers of Nile crocodile (Crocodylus niloticus) carcasses were found in the Kruger National Park (KNP), South Africa. Most of the crocodile carcasses were found in the Olifants Gorge, which is situated below the Letaba and Olifants river confluence, before the Mozambique border and Massingir Dam. The Massingir Dam is an important resource and it plays a significant role in the welfare of the local Mozambican population. Autopsies performed on the crocodiles indicated that the adipose tissue colour changed from normal white to yellow and this is usually a sign of pansteatitis. Pansteatitis is caused by lipid peroxidation in an organism and it is characterised by the lack of vitamin E. This disease is recognisable by the hardening of the fatty tissue and yellow discolouration, and is mostly associated with aquatic organisms from polluted ecosystems. There are speculations that the crocodile fatalities may be associated with the Massingir Dam that backed up into the Olifants Gorge after flooding. After the dam was reconstructed, it flooded the Olifants Gorge, causing it to act like a localised sediment trap as the water flow slowed down and as a result, caused pollutants to build-up. Sediment samples were collected from selected rivers and ponds within the KNP. These samples were analysed for selected elements, persistent organic pollutants (POPs), and polycyclic aromatic hydrocarbons (PAHs). The sediment samples were analysed in Norway for POPs and PAHs with the use of a high-resolution gas chromatography/mass spectrometry (GC/MS) and the heavy metals were analysed in South Africa with the use of inductively-coupled plasma mass spectrometry (ICP/MS). In order to identify which elements may have affected the health of the crocodiles, a series of sediment quality indices were used. These indices made it possible to determine which elements may have been involved. The order of probability of heavy metals causing harm was Se>As>Ni>Cr>Cu>I>V>Mn>Co>Fe>Cd>Hg>Zn>Pb>Ba>U. The data was compared to selected international guidelines. All the information was used to determine which of the sampled sites had the highest contamination. The sites sampled with the highest concentrations were in the Crocodile, Nkomati, Olifants, and Letaba Rivers. Concentrations of the elements, POPs, and PAHs were also quantifiable in the Olifants Gorge. The following elements (Fe, Co, Cu, Cr, Pb, V, As, and Ni) were quantified at elevated levels and may therefore have caused negative effects on the crocodiles in the Olifants Gorge. These elevated concentrations, in combination with the dramatic change in the physical environment due to the dam, could have added additional stress that may have contributed to the observed crocodile mortalities in the Olifants Gorge. / MSc (Environmental Sciences), North-West University, Potchefstroom Campus, 2015

Since 2008, large numbers of Nile crocodile (Crocodylus niloticus) carcasses were found in the Kruger National Park (KNP), South Africa. Most of the crocodile carcasses were found in the Olifants Gorge, which is situated below the Letaba and Olifants river confluence, before the Mozambique border and Massingir Dam. The Massingir Dam is an important resource and it plays a significant role in the welfare of the local Mozambican population. Autopsies performed on the crocodiles indicated that the adipose tissue colour changed from normal white to yellow and this is usually a sign of pansteatitis. Pansteatitis is caused by lipid peroxidation in an organism and it is characterised by the lack of vitamin E. This disease is recognisable by the hardening of the fatty tissue and yellow discolouration, and is mostly associated with aquatic organisms from polluted ecosystems. There are speculations that the crocodile fatalities may be associated with the Massingir Dam that backed up into the Olifants Gorge after flooding. After the dam was reconstructed, it flooded the Olifants Gorge, causing it to act like a localised sediment trap as the water flow slowed down and as a result, caused pollutants to build-up. Sediment samples were collected from selected rivers and ponds within the KNP. These samples were analysed for selected elements, persistent organic pollutants (POPs), and polycyclic aromatic hydrocarbons (PAHs). The sediment samples were analysed in Norway for POPs and PAHs with the use of a high-resolution gas chromatography/mass spectrometry (GC/MS) and the heavy metals were analysed in South Africa with the use of inductively-coupled plasma mass spectrometry (ICP/MS). In order to identify which elements may have affected the health of the crocodiles, a series of sediment quality indices were used. These indices made it possible to determine which elements may have been involved. The order of probability of heavy metals causing harm was Se>As>Ni>Cr>Cu>I>V>Mn>Co>Fe>Cd>Hg>Zn>Pb>Ba>U. The data was compared to selected international guidelines. All the information was used to determine which of the sampled sites had the highest contamination. The sites sampled with the highest concentrations were in the Crocodile, Nkomati, Olifants, and Letaba Rivers. Concentrations of the elements, POPs, and PAHs were also quantifiable in the Olifants Gorge. The following elements (Fe, Co, Cu, Cr, Pb, V, As, and Ni) were quantified at elevated levels and may therefore have caused negative effects on the crocodiles in the Olifants Gorge. These elevated concentrations, in combination with the dramatic change in the physical environment due to the dam, could have added additional stress that may have contributed to the observed crocodile mortalities in the Olifants Gorge. / MSc (Environmental Sciences), North-West University, Potchefstroom Campus, 2015

No description available.

<p>In chimpanzees, most females disperse from the community in which they were born to reproduce in a new community, thereby eliminating the risk of inbreeding with close kin. However, across sites, some females breed in their natal community, raising questions about the flexibility of dispersal, the costs and benefits of different strategies and the mitigation of costs associated with dispersal and integration. In this dissertation I address these questions by combining long-term behavioral data and recent field observations on maturing and young adult females in Gombe National Park with an experimental manipulation of relationship formation in captive apes in the Congo.</p><p>To assess the risk of inbreeding for females who do and do not disperse, 129 chimpanzees were genotyped and relatedness between each dyad was calculated. Natal females were more closely related to adult community males than were immigrant females. By examining the parentage of 58 surviving offspring, I found that natal females were not more related to the sires of their offspring than were immigrant females, despite three instances of close inbreeding. The sires of all offspring were less related to the mothers than non-sires regardless of the mother’s residence status. These results suggest that chimpanzees are capable of detecting relatedness and that, even when remaining natal, females can largely avoid, though not eliminate, inbreeding.</p><p>Next, I examined whether dispersal was associated with energetic, social, physiological and/or reproductive costs by comparing immigrant (n=10) and natal (n=9) females of similar age using 2358 hours of observational data. Natal and immigrant females did not differ in any energetic metric. Immigrant females received aggression from resident females more frequently than natal females. Immigrants spent less time in social grooming and more time self-grooming than natal females. Immigrant females primarily associated with resident males, had more social partners and lacked close social allies. There was no difference in levels of fecal glucocorticoid metabolites in immigrant and natal females. Immigrant females gave birth 2.5 years later than natal females, though the survival of their first offspring did not differ. These results indicate that immigrant females in Gombe National Park do not face energetic deficits upon transfer, but they do enter a hostile social environment and have a delayed first birth. </p><p>Next, I examined whether chimpanzees use condition- and phenotype-dependent cues in making dispersal decisions. I examined the effect of social and environmental conditions present at the time females of known age matured (n=25) on the females’ dispersal decisions. Females were more likely to disperse if they had more male maternal relatives and thus, a high risk of inbreeding. Females with a high ranking mother and multiple maternal female kin tended to disperse less frequently, suggesting that a strong female kin network provides benefits to the maturing daughter. Females were also somewhat less likely to disperse when fewer unrelated males were present in the group. Habitat quality and intrasexual competition did not affect dispersal decisions. Using a larger sample of 62 females observed as adults in Gombe, I also detected an effect of phenotypic differences in personality on the female’s dispersal decisions; extraverted, agreeable and open females were less likely to disperse. </p><p>Natural observations show that apes use grooming and play as social currency, but no experimental manipulations have been carried out to measure the effects of these behaviors on relationship formation, an essential component of integration. Thirty chimpanzees and 25 bonobos were given a choice between an unfamiliar human who had recently groomed or played with them over one who did not. Both species showed a preference for the human that had interacted with them, though the effect was driven by males. These results support the idea that grooming and play act as social currency in great apes that can rapidly shape social relationships between unfamiliar individuals. Further investigation is needed to elucidate the use of social currency in female apes.</p><p>I conclude that dispersal in female chimpanzees is flexible and the balance of costs and benefits varies for each individual. Females likely take into account social cues present at maturity and their own phenotype in choosing a settlement path and are especially sensitive to the presence of maternal male kin. The primary cost associated with philopatry is inbreeding risk and the primary cost associated with dispersal is delay in the age at first birth, presumably resulting from intense social competition. Finally, apes may strategically make use of affiliative behavior in pursuing particular relationships, something that should be useful in the integration process.</p> / Dissertation