72 research outputs found
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How to capture tourists’ love for a place: methodological and technological solutions
Katie Swanson is a researcher at Manchester Business School. Her research interests include tourists’ relationships with places and their brands. Prior to joining Manchester Business School, she worked in industry positions, most recently for The Walt Disney Company.
Dominic Medway is Professor of Marketing and Head of the Marketing, Operations Management and Service Systems Division at Manchester Business School. His key research interests lie in the areas of Place Marketing and Branding and Retailing. His work is published in a range of academic journals in management and geography.
Gary Warnaby is Professor of Marketing in the School of Materials at the University of Manchester. His research interests focus on the marketing of places, and he has been researching issues relating to this area since the mid-1990s. Results of this research have been published in various academic journals in both the management and geography disciplines.Oral Presentation, Qualitative Research Method
Nesting Ecology of Greater Sage-Grouse Centrocercus urophasianus at the Eastern Edge of their Historic Distribution
Greater sage-grouse Centrocercus urophasianus populations in North Dakota declined approximately 67% between 1965 and 2003, and the species is listed as a Priority Level 1 Species of Special Concern by the North Dakota Game and Fish Department. The habitat and ecology of the species at the eastern edge of its historical range is largely unknown. We investigated nest site selection by greater sage-grouse and nest survival in North Dakota during 2005 - 2006. Sage-grouse selected nest sites in sagebrush Artemisia spp. with more total vegetative cover, greater sagebrush density, and greater 1-m visual obstruction from the nest than at random sites. Height of grass and shrub (sagebrush) at nest sites were shorter than at random sites, because areas where sagebrush was common were sites in low seral condition or dense clay or clay-pan soils with low productivity. Constant survival estimates of incubated nests were 33% in 2005 and 30% in 2006. Variables that described the resource selection function for nests were not those that modeled nest survival. Nest survival was positively influenced by percentage of shrub (sagebrush) cover and grass height. Daily nest survival decreased substantially when percentage of shrub cover declined below about 9% and when grass heights were less than about 16 cm. Daily nest survival rates decreased with increased daily precipitation
Greater sage-grouse winter habitat use on the eastern edge of their range
Greater sage-grouse (Centrocercus urophasianus) at the western edge of the Dakotas occur in the transition zone between sagebrush and grassland communities. These mixed sagebrush (Artemisia sp.) and grasslands differ from those habitats that comprise the central portions of the sage-grouse range; yet, no information is available on winter habitat selection within this region of their distribution. We evaluated factors influencing greater sage-grouse winter habitat use in North Dakota during 2005–2006 and 2006–2007 and in South Dakota during 2006–2007 and 2007–2008. We captured and radio-marked 97 breeding-age females and 54 breeding-age males from 2005 to 2007 and quantified habitat selection for 98 of these birds that were alive during winter. We collected habitat measurements at 340 (177 ND, 163 SD) sage-grouse use sites and 680 random (340 each at 250 m and 500 m from locations) dependent sites. Use sites differed from random sites with greater percent sagebrush cover (14.75% use vs. 7.29% random; P \u3c 0.001), percent total vegetation cover (36.76% use vs. 32.96% random; P ≤ 0.001), and sagebrush density (2.12 plants/m2 use vs. 0.94 plants/m2 random; P ≤ 0.001), but lesser percent grass cover (11.76% use vs. 16.01% random; P ≤ 0.001) and litter cover (4.34% use vs. 5.55% random; P = 0.001) and lower sagebrush height (20.02 cm use vs. 21.35 cm random; P = 0.13) and grass height (21.47 cm use vs. 23.21 cm random; P = 0.15). We used conditional logistic regression to estimate winter habitat selection by sage-grouse on continuous scales. The model sagebrush cover + sagebrush height + sagebrush cover × sagebrush height ( = 0.60) was the most supported of the 13 models we considered, indicating that percent sagebrush cover strongly influenced selection. Logistic odds ratios indicated that the probability of selection by sage-grouse increased by 1.867 for every 1% increase in sagebrush cover (95% CI = 1.627–2.141) and by 1.041 for every 1 cm increase in sagebrush height (95% CI = 1.002–1.082). The interaction between percent sagebrush canopy cover and sagebrush height (β = −0.01, SE ≤ 0.01; odds ratio = 0.987 [95% CI = 0.983–0.992]) also was significant. Management could focus on avoiding additional loss of sagebrush habitat, identifying areas of critical winter habitat, and implementing management actions based on causal mechanisms (e.g., soil moisture, precipitation) that affect sagebrush community structure in this region. Published 2012. This article is a U.S. Government work and is in the public domain in the USA
Prospectus, October 13, 1993
https://spark.parkland.edu/prospectus_1993/1015/thumbnail.jp
Prospectus, September 29, 1993
https://spark.parkland.edu/prospectus_1993/1014/thumbnail.jp
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Climate Change Winners: Receding Ice Fields Facilitate Colony Expansion and Altered Dynamics in an Adélie Penguin Metapopulation
There will be winners and losers as climate change alters the habitats of polar organisms. For an Adelie penguin (Pygoscelis adeliae) colony on Beaufort Island (Beaufort), part of a cluster of colonies in the southern Ross Sea, we report a recent population increase in response to increased nesting habitat as glaciers have receded. Emigration rates of birds banded as chicks on Beaufort to colonies on nearby Ross Island decreased after 2005 as available habitat on Beaufort increased, leading to altered dynamics of the metapopulation. Using aerial photography beginning in 1958 and modern satellite imagery, we measured change in area of available nesting habitat and population size of the Beaufort colony. Population size varied with available habitat, and both increased rapidly since the 1990s. In accord with glacial retreat, summer temperatures at nearby McMurdo Station increased by similar to 0.50 degrees C per decade since the mid-1980s. Although the Ross Sea is likely to be the last ocean with an intact ecosystem, the recent retreat of ice fields at Beaufort that resulted in increased breeding habitat exemplifies a process that has been underway in the Ross Sea during the entire Holocene. Furthermore, our results are in line with predictions that major ice shelves and glaciers will retreat rapidly elsewhere in the Antarctic, potentially leading to increased breeding habitat for Adelie penguins. Results further indicated that satellite imagery may be used to estimate large changes in Adelie penguin populations, facilitating our understanding of metapopulation dynamics and environmental factors that influence regional populations
The MAPS Adaptive Secondary Mirror: First Light, Laboratory Work, and Achievements
The MMT Adaptive Optics exoPlanet Characterization System (MAPS) is a
comprehensive update to the first generation MMT adaptive optics system
(MMTAO), designed to produce a facility class suite of instruments whose
purpose is to image nearby exoplanets. The system's adaptive secondary mirror
(ASM), although comprised in part of legacy components from the MMTAO ASM,
represents a major leap forward in engineering, structure and function. The
subject of this paper is the design, operation, achievements and technical
issues of the MAPS adaptive secondary mirror. We discuss laboratory preparation
for on-sky engineering runs, the results of those runs and the issues we
discovered, what we learned about those issues in a follow-up period of
laboratory work, and the steps we are taking to mitigate them.Comment: 22 pages, 22 images, 2 tables, submitted to SPIE Proceedings
(Unconventional Imaging, Sensing and Adaptive Optics 2023 Conference
The development of vegetarian omega-3 oil in water nanoemulsions suitable for integration into functional food products
Global trends show that habitual omega-3 intakes are short of recommended guidelines, particularly among vegetarians and vegans. The potential health implications of low long chain omega-3 polyunsaturated fatty acids (LC3PUFA) intakes coupled with concerns about sustainability of fish stocks call for innovative approaches to provide food based solutions to this problem. Nanoemulsions are systems with extremely small droplet sizes that could provide a solution whilst improving the bioavailability of LC3PUFA. Oil in water nanoemulsion systems were successfully created using ultrasound with oil loads of up to 50 vol % using vegetarian LC3PUFA oils. Nanoemulsions containing 50 vol % flaxseed and algae oil were created with mean droplet size measurements of 192 and 182nm respectively using combinations of the emulsifiers Tween 40 and lecithin. This technique could be applied to create vegetarian LC3PUFA nanoemulsions suitable for integration into enriched functional food products with the potential to increase LC3PUFA intakes and bioavailability
Riparian Research and Management: Past, Present, Future: Volume 1
Fifty years ago, riparian habitats were not recognized for their extensive and critical contributions to wildlife and the ecosystem function of watersheds. This changed as riparian values were identified and documented, and the science of riparian ecology developed steadily. Papers in this volume range from the more mesic northwestern United States to the arid Southwest and Mexico. More than two dozen authors—most with decades of experience—review the origins of riparian science in the western United States, document what is currently known about riparian ecosystems, and project future needs. Topics are widespread and include: interactions with fire, climate change, and declining water; impacts from exotic species; unintended consequences of biological control; the role of small mammals; watershed response to beavers; watershed and riparian changes; changes below large dams; water birds of the Colorado River Delta; and terrestrial vertebrates of mesquite bosques. Appendices and references chronicle the field’s literature, authors, “riparian pioneers,” and conferences
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