Beach advisories are issued at recreational beaches when the water quality exceeds regulatory limits for the indicator organism, enterococci. Elevated levels of enterococci have been observed at Hobie Cat Beach, the study marine beach site, located on Virginia Key, Florida. The study site represents a classic non-point source sub/tropical marine recreational beach area with high human and animal use, representative of many beaches worldwide in sub/tropical areas. The dissertation consisted of two separate but related studies: the first to identify environmental and geographic factors, and the second to evaluate the impact of known animal sources of enterococci. The first efforts were made to identify the geographic location of the source of enterococci to the beach waters and to assess the environmental factors that impact the variation in concentrations observed at the site. These environmental factors and conditions include: proximity to shoreline, tidal changes, impacts of runoff, and sunlight intensity. Enterococci were enumerated by traditional membrane filtration or the chromogenic substrate method. Overall, results showed that the source of enterococci to the study beach was geographically located within the inter-tidal zone. These results suggest that the wash-in of sediments and accompanying pore waters (where the pore water is the water filling the spaces between grains of sediment) from the inter-tidal zone play a major role in controlling enterococci levels within the water column. Wash-in occurs through both tidal fluctuations and runoff. The second effort evaluated non-point sources, including animals, which are known to contribute to elevated levels of enterococci in recreational marine beach waters. Specifically, feces from dogs, birds, and shrimp mounds were collected from the beach; additional bird fecal samples were collected from both a local zoo and bird rehabilitation center. Fecal samples were weighed gravimetrically, and enumerated for enterococci using traditional membrane filtration method. The total numbers of animals which frequented the site were obtained through camera image analysis and in-field visual counting surveys. The highest enterococci concentrations were observed in dog feces (avg. 7.4 x 10^6 CFU/g dry feces), then birds (avg. 3.3 x 10^5 CFU/g dry feces) and the lowest measured levels of enterococci were observed in shrimp fecal mounds (2.0 CFU/g dry feces on average). A comparison of the microbial load (CFU per fecal event) showed that 1 dog fecal event was equivalent to 6,940 bird fecal events or 3.2 x 10^8 shrimp fecal events. Given the abundance of animals observed on the beach, these study results suggest that dogs are the largest contributing source of enterococci to the beach site (6.3 x 10^11 CFU per day during weekends and 2.9 x 10^11 CFU per day during weekdays), with humans (4.6 x 10^9 CFU per day during weekends and 4.8 x 10^8 CFU per day during weekdays) and birds (2.7 x 10^8 CFU per day) serving as secondary contributors. Shrimp served as an insignificant source (1.9 x 10^4 CFU per day). When maximum daily contributions were considered, dogs contributed the highest proportion of enterococci (99.2%) compared to humans (0.72%), birds (0.04%), and shrimp (<0.04%). Beach management efforts at the study site should thus focus on requiring dog owners to properly dispose of dog feces deposited at the beach.

Florida’s recreational bonefish fishery generates substantial economic benefits to the region; however, the resource has never been adequately assessed to determine standard benchmarks for sustainability. The situation offered a unique opportunity to address unresolved issues in sustainability for a valuable recreational fishery that is almost exclusively catch and release. The goal of this dissertation was three-fold: (1) to develop a comprehensive framework for conducting rigorous stock assessments on recreational catch-and-release fisheries; (2) to apply these methods to the Florida bonefish fishery to compare results against internationally-recognized sustainable fishery benchmarks; and, (3) provide recommendations for longer-term assessment strategies and management efforts. Due to the dearth of available bonefish information, existing literature were synthesized and new quantitative data and models concerning bonefish demographics (i.e. growth, survivorship) and population dynamics were developed. Data for age-and-growth were collected with a focus on both small (< 100 mm FL) and large (>650 mm FL) bonefish which had been under-sampled in previous research. A two-stage growth model was developed that allowed predictions of size-at-age over the complete life history of the species. Evidence from multiple analyses suggested a single species of bonefish in the Florida fishery. A mail survey of bonefish captains (guides) acquired baseline statistics on the south Florida bonefish fishery. Fleet fishing effort is mostly concentrated in the northern Florida Keys (Biscayne Bay to Islamorada) and reflects to some extent bonefish spatial population abundance. The majority of the respondents indicated the stock had declined over the past few decades. A sized-based mortality estimator was used to determine mortality. Changes in current population size from 2003-2010 were determined from a visual survey. Historical stock size was inferred from a relative abundance index from standardized tournament catch rates. Annual trends of the mortality estimates implied a stable population that is not declining which contrasts with the index of abundance and visual survey results. Both the index of abundance and visual survey displayed overall declining trends in recent years. Bonefish movements were determined from anchor tag and acoustic telemetry. Anchor tagging data were analyzed to evaluate movements, stock size structure and mortality. Results revealed no significant relationships between distance moved and days at large or days at large and length at tagging; however, significant individual movements (>100 kilometers) were recorded. Use of acoustic telemetry showed frequent movements around the barrier islands, schooling behavior, and a possible spawning effect with movements to offshore reef habitats. Stock status was addressed with two different classes of assessment models: REEFS, a length-based model which estimated the stock as moderately exploited with the current fishing mortality rate less than the maximum sustainable yield fishing mortality rate; and a “catch-free” age-structured model which indicated a large stock decline over the past 40 years with the stock currently bordering an overfished benchmark. The age-structured model was assumed to be the most robust method because it incorporated the majority of the research data (age and growth, selectivity, mortality, visual survey, CPUE standardization, vessel effort). In conclusion, the stock’s productivity has been significantly reduced over the past 50 years due to fishing, but also degradation of key prey populations, habitats, and water quality, resulting in a current bonefish population that is bordering an overfished state. Recommendations are provided for improving future stock assessments and management approaches. The assessment framework and quantitative methods and models developed here are broadly applicable to bonefish stocks around the world.

Thesis (M. Soc. Sc.)--University of Hong Kong, 2006.

Characterization of distinct angler fishing styles (e.g., how, where, and with what) allows resource managers the ability to predict how perceived impacts or modifications to fisheries resources (i.e., decline of fish species population) may impact different user groups. Recreation specialization provides a useful framework for understanding participation diversity among recreationists in terms of unique styles of participation. Bryan suggested that within an activity distinct types of participants exist that demonstrate characteristic styles of participation. Fundamental to Bryan's development of specialization were contextual attributes that characterize participant engagement in a recreation activity. However, advancement in specialization has been accompanied by a departure from Bryan's original conceptualization describing activity context. I revisited how specialization is operationalized and developed a contextual style of participation typology and self-classification measure to investigate displacement and substitution behavior among Texas inshore fishing guides. Data were collected in two separate phases. In 2010, I conducted an exploratory investigation that included eighteen face-to-face, in-depth interviews with key informants spanning the entire coast. In 2011, I conducted a quantitative investigation that included mailing a 12 page self-administered survey to all Texas Parks and Wildlife licensed saltwater fishing guides (n=909). Thematic analysis drawing on grounded theory revealed that the salience of six contextual attributes (i.e., bait type, tackle type, fishing method, casting tactic, water depth, and fish species) that characterized four distinct styles of participation (e.g., Bait, All-purpose, Lure, and Sight-casting Guides). A unidimensional self-classification measure was developed based on my guide typology and discriminant analysis revealed it performed as well as a multidimensional measure of specialization. Ultimately, analysis of variance revealed significant differences existed among self-classification categories with respect to substitution behavior (e.g., targeting alternative species of fish, fishing in another location, and using alternative fishing methods or bait types) due to perceived spotted seatrout declines during 2010. In short, my findings suggest that anglers respond differently due to perceived spotted seatrout declines based on their preferred contextual style of participation. A contextual approach to understanding style of participation provides fisheries managers an effective method for understanding and mitigating social and ecological issues.

Osteoporosis, through its association with age-related fracture, is a major public health concern worldwide. Although osteoporosis was once considered a disease of the elderly, it is now recognized as a condition that has childhood antecedents. The capacity of bone to adapt is the greatest before puberty because of a higher rate of modeling and remodeling. Therefore, the amount of bone gained during childhood and adolescence has the potential to impact lifetime skeletal health. Children who participate in greater amounts of physical activity have greater bone mineral accrual in adolescence as well as a greater peak bone mass in young adulthood. Structured impact loading during growth also positively influences bone parameters. However, the intensity, duration and frequency of loading that is required to elicit skeletal benefits are not well established. Furthermore, although structured physical activity during growth has been hypothesized to delay or prevent the risk of osteoporosis and related fracture later in life there is no clear evidence of a persisting benefit once the loading stimulus has been removed. Therefore, the objective of this thesis was to investigate low-level impact loading during growth and skeletal development as well as to determine the influence of the withdrawal of the loading stimulus on adult bone parameters. Two studies were necessary to realize this objective. The findings should help to determine whether adolescent and adult bone health benefits from structured physical activity during growth. If this is found to be the case then structured gymnastic activity could be promoted as an effective means to optimize adult bone mass, structure and estimated strength.<p> Study 1: The purpose of study one was to investigate whether the differences previously reported in the skeleton of competitive female gymnasts (high level gymnastics exposure) are also demonstrated in young children with a current or past participation history in recreational or precompetitive gymnastics (low level gymnastics exposure). One hundred and sixty three children (30 gymnasts, 61 ex-gymnasts, and 72 non-gymnasts) between 4 and 6 years of age were recruited and measured annually for four years. Total body (TB), lumbar spine (LS) and femoral neck (FN) bone mineral content (BMC) was measured by dual energy x-ray absorptiometry (DXA) at each measurement occasion. Bone mass, density, structure and estimated strength was determined using peripheral quantitative computed tomography (pQCT) at the radius and tibia during the third measurement occasion. Multilevel random effects models were constructed and used to predict differences in TB, LS and FN BMC between groups while controlling for differences in body size, physical activity and diet. Analysis of covariance (covariates of sex, age and height) was used to investigate differences in bone content, density, area, and estimated strength at the radius and tibia. Gymnasts had 3% more TB and 7% more FN BMC than children participating in other recreational sports at the fourth measurement occasion (p<0.05). Gymnasts were also found have 6-25% greater adjusted BMC, volumetric bone mineral density and estimated strength at the distal radius compared to non-gymnasts (p<0.05). These findings suggest that recreational and precompetitive gymnastics participation (low level gymnastics exposure) is associated with greater bone parameters. This is important as beginner gymnastics skills are attainable by most children and do not require a high level of training. Low-level gymnastics skills can easily be integrated into school physical education programs potentially impacting skeletal health.<p> Study 2: The purpose of study 2 was to assess whether the previously reported greater bone mineral content in premenarcheal gymnasts was maintained 10 years after the cessation of participation and removal of the gymnastics loading stimulus. In 1995, thirty elite premenarcheal female gymnasts were recruited into a study investigating the role of high impact physical activity on bone mass in childhood and compared to 30 non-gymnasts. In 2009-2010 gymnasts and non-gymnasts (n=60) were re-contacted and 25 retired gymnasts and 22 non-gymnasts consented to participate. Total body, LS, and FN BMC was assessed at both measurement occasions by DXA. Bone geometric and densitometric parameters were measured by pQCT at the radius and tibia in 2009/10. ANCOVA was used to compare gymnasts and non-gymnasts bone parameters while controlling for differences in age, body composition and maturation. Gymnasts had significantly greater size adjusted TB, LS, and FN BMC (15, 17, and 12%, respectively) at 12 years of age (1995) (p<0.05). At follow-up, retired gymnasts also had significantly greater size adjusted TB, LS, and FN BMC (13, 19 and 13%, respectively) (p<0.05). Furthermore, retired female gymnasts had greater bone area, content and estimated strength at the radius and greater BMC and estimated strength at the tibia compared to non-gymnasts (p<0.05). Premenarcheal gymnasts have bone benefits that were apparent in adulthood after long-term removal of the gymnastics loading stimulus. Low level gymnastics exposure was associated with greater bone parameters in childhood. If these benefits can be maintained, as is suggested in retired competitive gymnasts, recreational gymnastics participation has the potential to positively impact lifetime skeletal health.

In 1988, the red snapper fishery in the Gulf of Mexico was declared severely overfished. Since then, the daily bag limit has been reduced from 7 to 2, the minimum size limit has increased from 13 to 16 inches, and the year-round recreational season has been reduced to one lasting 53 days. Despite NOAA's recommendations that the Gulf States match these regulations, Texas has enforced a 4 bag limit and no seasonal restrictions. In 2009 alone, the total recreational catch exceeded the allocated quota by 1.7 million pounds. The lack of consistency between state and federal regulations and the drastic changes in management schemes have affected anglers' confidence in management, and limited the ability of the fishery to successfully adapt. This study provides an innovative assessment that measures fishers' knowledge and determines their support for current fishery regulations and for the scientific rationale behind the regulatory system. Over 150 interviews of red snapper anglers at charter and head boat docks were conducted along the Texas coast. The majority of respondents were 20-50 year old (74.5%), male (89.3%), four-year college graduates (34.9%), who resided near the coast (65.3%), and were targeting red snapper (92.5%). Results showed that 72.5 percent of respondents agree with the science behind red snapper management, 63.4 percent believe that the stock has improved since 2008, 89.5 percent agree that a bag limit in general is an appropriate management tool, and 78.2 percent agree with the Texas state management of red snapper. However, 51.7 percent of respondents disagree with the federal management of red snapper, and 90.1 percent of all respondents did not know that red snapper live to be 41-60 years old. The lack of support for the federal management may be due to the lack of knowledge of red snapper life span. Applications of this research will be imperative for managers - who already address biological, ecological, and economic aspects of a fishery - to expand their multi-disciplinary approach to include social analysis for the successful evolution of recreational fisheries management. Future research should explore improved management approaches that involve greater communication between the stakeholders and managers.

This practicum investigates the use of recreational vehicles and park model trailers within the east central Vancouver Island area with the objective of developing an understanding of their use as an alternative affordable housing option. As part of this research, and in order to provide a base reference point for a later analysis within the study, a review of literature on the topics of homelessness, evolution of the travel trailer, mobile home policy, living in an RV on the street, living in an RV park, and the emergency use of travel trailers was conducted. In addition, this research includes a review of Provincial regulations such as the BC Building Code, Residential Tenancy Policy Guideline how they relate to the use of RV and park model trailers. As well, this study includes a review and analysis of the zoning bylaw of various local governments on Vancouver Island with respect to the use and classification of RV and park model trailers. This practicum forms a case study of local government officials, campground operators and recreational vehicle dwellers on the use of RVs and park model trailers within the study area. [truncated] / February 2007

Recreational shopping has long been of interest to business academics and practitioners, but research on it has been underdeveloped in the leisure field. Although the leisure literature and business literature represent distinct perspectives, there appears to be many significant parallels between recreational shopping and leisure. The purpose of this study was to examine the intrinsic meanings of shopping; to explore the experiential aspects of the recreational shopping experience (including the influences of the retail environment on individuals who regularly engage in recreational shopping). This study took place in Toronto, Ontario. The sample included five female self-proclaimed recreational shoppers. The researcher accompanied each participant on a shopping excursion which took place at a shopping mall selected by the participant. Data were collected through three qualitative methods. First, participant observation involved the researcher walking alongside the participant as she shopped. Following the shopping session, the researcher conducted an in-depth face-to-face interview with each participant; the interview was guided by a set of open-ended questions. In addition, this study utilized photo-elicitation in which the participants were asked to photograph ‘anything’ that made an impression during their visit to the mall. The photographs offered tangible illustrations of shopping experiences and were used as a catalyst for discussion during the interviews. The data was analyzed using Grounded Theory coding which lead to the identification of two main themes and six respective subthemes. The emergent themes are all connected to the key idea that shoppers are motivated by their expectations and desires when they partake in the recreational shopping activity. Shopping offers numerous opportunities that provide immediate hedonic pleasure as well as intrinsic rewards. Such opportunities often include, the ‘before and after’ phases of experiences of acquisition and unexpected discoveries, the positive interactions which occur both inside and outside a retail environment, and lastly, the individual’s use of shopping as a means of self-expression and a tool to manage their self image. Satisfaction, spontaneity, familiarity, mastery, accomplishment, and feelings of escape were all present in these shopping experiences. The findings also described the role of shopping malls as a leisure space and as facilitators of recreational shopping activities. Furthermore, this study demonstrated that shopping can offer a profound leisure experience for many people and the activity should not only be researched in terms of just ‘recreational shopping’ or ‘utilitarian shopping.’ Rather, the findings indicate several overlaps between the two types of shopping and further research is needed to more fully understand the complexities of the activity.

Osteoporosis, through its association with age-related fracture, is a major public health concern worldwide. Although osteoporosis was once considered a disease of the elderly, it is now recognized as a condition that has childhood antecedents. The capacity of bone to adapt is the greatest before puberty because of a higher rate of modeling and remodeling. Therefore, the amount of bone gained during childhood and adolescence has the potential to impact lifetime skeletal health. Children who participate in greater amounts of physical activity have greater bone mineral accrual in adolescence as well as a greater peak bone mass in young adulthood. Structured impact loading during growth also positively influences bone parameters. However, the intensity, duration and frequency of loading that is required to elicit skeletal benefits are not well established. Furthermore, although structured physical activity during growth has been hypothesized to delay or prevent the risk of osteoporosis and related fracture later in life there is no clear evidence of a persisting benefit once the loading stimulus has been removed. Therefore, the objective of this thesis was to investigate low-level impact loading during growth and skeletal development as well as to determine the influence of the withdrawal of the loading stimulus on adult bone parameters. Two studies were necessary to realize this objective. The findings should help to determine whether adolescent and adult bone health benefits from structured physical activity during growth. If this is found to be the case then structured gymnastic activity could be promoted as an effective means to optimize adult bone mass, structure and estimated strength.<p> Study 1: The purpose of study one was to investigate whether the differences previously reported in the skeleton of competitive female gymnasts (high level gymnastics exposure) are also demonstrated in young children with a current or past participation history in recreational or precompetitive gymnastics (low level gymnastics exposure). One hundred and sixty three children (30 gymnasts, 61 ex-gymnasts, and 72 non-gymnasts) between 4 and 6 years of age were recruited and measured annually for four years. Total body (TB), lumbar spine (LS) and femoral neck (FN) bone mineral content (BMC) was measured by dual energy x-ray absorptiometry (DXA) at each measurement occasion. Bone mass, density, structure and estimated strength was determined using peripheral quantitative computed tomography (pQCT) at the radius and tibia during the third measurement occasion. Multilevel random effects models were constructed and used to predict differences in TB, LS and FN BMC between groups while controlling for differences in body size, physical activity and diet. Analysis of covariance (covariates of sex, age and height) was used to investigate differences in bone content, density, area, and estimated strength at the radius and tibia. Gymnasts had 3% more TB and 7% more FN BMC than children participating in other recreational sports at the fourth measurement occasion (p<0.05). Gymnasts were also found have 6-25% greater adjusted BMC, volumetric bone mineral density and estimated strength at the distal radius compared to non-gymnasts (p<0.05). These findings suggest that recreational and precompetitive gymnastics participation (low level gymnastics exposure) is associated with greater bone parameters. This is important as beginner gymnastics skills are attainable by most children and do not require a high level of training. Low-level gymnastics skills can easily be integrated into school physical education programs potentially impacting skeletal health.<p> Study 2: The purpose of study 2 was to assess whether the previously reported greater bone mineral content in premenarcheal gymnasts was maintained 10 years after the cessation of participation and removal of the gymnastics loading stimulus. In 1995, thirty elite premenarcheal female gymnasts were recruited into a study investigating the role of high impact physical activity on bone mass in childhood and compared to 30 non-gymnasts. In 2009-2010 gymnasts and non-gymnasts (n=60) were re-contacted and 25 retired gymnasts and 22 non-gymnasts consented to participate. Total body, LS, and FN BMC was assessed at both measurement occasions by DXA. Bone geometric and densitometric parameters were measured by pQCT at the radius and tibia in 2009/10. ANCOVA was used to compare gymnasts and non-gymnasts bone parameters while controlling for differences in age, body composition and maturation. Gymnasts had significantly greater size adjusted TB, LS, and FN BMC (15, 17, and 12%, respectively) at 12 years of age (1995) (p<0.05). At follow-up, retired gymnasts also had significantly greater size adjusted TB, LS, and FN BMC (13, 19 and 13%, respectively) (p<0.05). Furthermore, retired female gymnasts had greater bone area, content and estimated strength at the radius and greater BMC and estimated strength at the tibia compared to non-gymnasts (p<0.05). Premenarcheal gymnasts have bone benefits that were apparent in adulthood after long-term removal of the gymnastics loading stimulus. Low level gymnastics exposure was associated with greater bone parameters in childhood. If these benefits can be maintained, as is suggested in retired competitive gymnasts, recreational gymnastics participation has the potential to positively impact lifetime skeletal health.

During the last decade, the Internet and Geographic Information System (GIS) have made changes in the relationship between governments and citizens in many developed countries. Citizens, in such countries, have been given more chances to participate in the decision making process of the spatial issues relevant to them. Such participation has helping to make urban planning more democratic and to make planners plan with the public rather than plan for the public. In Saudi Arabia (a developing country), participation of citizens in spatial decision making is very limited. Such limitation is more severe when considering women due to the circumstance of gender segregation in the Saudi society. While males may somehow muddle through ways to express their views about spatial issues to the planning authority, females have no ways unless they behave against the local norms. There is a persistent need for implementing distance participation for women in Saudi Arabia. This research examines whether developing and employing an Internet / GIS participatory approach can facilitate (without conflicting with the local conservative cultural norms) women’s participation in the municipal decision making process of the neighborhood’s outdoor recreational facilities. The goal was primarily to adapt the technology to serve the society instead of necessitating the society to change its inherited norms to be able to advance. The research involved an exploratory ethnographic case study carried out in a selected residential community in the city of Jeddah, Saudi Arabia. The research was carried out in two phases where the current status of public participation in the Saudi community planning was investigated first, and then a prototype for an Internet/GIS system for female public participation was developed and evaluated. The research found that there is a legitimate enthusiasm amongst the public and officials of the research sample for adopting e-public participation. Such enthusiasm is supported by a number of political, economical, technological and religious reasons. However, the findings showed that adopting e-public participation is more promising in the near future than currently due to different reasons including the current relatively small number of Internet users in Saudi Arabia. Since such research is the first of its type to be conducted in the Saudi context, the findings can serve as a road map indicating that adopting e-public participation in Saudi Arabia is promising and worth researching.