994 resultados para --1494-1556. --Visitation


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Contient : 1° Le Testament [de JEAN DE MEUNG] ; 2° « Le premier et le dernier Codicile de maistre JEHAN DE MEUN » ; 3° Traité des sacrements ; 4° Vision des peines d'enfer [extrait de VINCENT DE BEAUVAIS] ; 5° Traité contre le Roman de la Rose [par JEAN GERSON] ; 6° « Le Cours des ans, selon Ezechiel le bon prophecte » ; 7° « Le Dit du chien joieulx »

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La version intégrale de cette thèse est disponible uniquement pour consultation individuelle à la Bibliothèque de musique de l’Université de Montréal (http://www.bib.umontreal.ca/MU).

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1. Habitat fragmentation can affect pollinator and plant population structure in terms of species composition, abundance, area covered and density of flowering plants. This, in turn, may affect pollinator visitation frequency, pollen deposition, seed set and plant fitness. 2. A reduction in the quantity of flower visits can be coupled with a reduction in the quality of pollination service and hence the plants’ overall reproductive success and long-term survival. Understanding the relationship between plant population size and⁄ or isolation and pollination limitation is of fundamental importance for plant conservation. 3. Weexamined flower visitation and seed set of 10 different plant species fromfive European countries to investigate the general effects of plant populations size and density, both within (patch level) and between populations (population level), on seed set and pollination limitation. 4. Wefound evidence that the effects of area and density of flowering plant assemblages were generally more pronounced at the patch level than at the population level. We also found that patch and population level together influenced flower visitation and seed set, and the latter increased with increasing patch area and density, but this effect was only apparent in small populations. 5. Synthesis. By using an extensive pan-European data set on flower visitation and seed set we have identified a general pattern in the interplay between the attractiveness of flowering plant patches for pollinators and density dependence of flower visitation, and also a strong plant species-specific response to habitat fragmentation effects. This can guide efforts to conserve plant–pollinator interactions, ecosystem functioning and plant fitness in fragmented habitats.

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We examined the effect of the invasive Solanum elaeagnifolium (Solanaceae) on flower visitation patterns and seed set of the co-flowering native Glaucium flavum (Papaveraceae). We observed flowering G. flavum plants in invaded and uninvaded sites and found that G. flavum flowers in uninvaded sites received significantly more total visits. In addition, we hand-pollinated flowers on plants of G. flavum with (i) pure conspecific pollen, (ii) pure S. elaeagnifolium pollen and (iii) three different mixtures of the two types of pollen (containing 25, 50 and 75% invasive pollen). As a control, flowers were left unmanipulated or were permanently bagged. Seed set did not differ significantly between flowers receiving pollen mixtures and pure conspecific pollen. However, in the open pollination treatment, seed set was significantly lower than in the 100% conspecific pollen treatment, which suggests pollen limitation. Bagged flowers had very low seed set. G. flavum was generally resilient against the deposition of S. elaeagnifolium pollen.

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1 Pesticides are considered a threat to pollinators but little is known about the potential impacts of their widespread use on pollinators. Less still is known about the impacts on pollination, comprising the ecosystem service that pollinators provide to wildflowers and crops. 2 The present study measured flower visitation and pollination in an agricultural landscape, by placing potted flowering plants (Petunia sp.) in vine fields sprayed with a highly toxic insecticide (fenitrothion). During two sampling rounds, insect visitors to the petunias were observed and measures of pollination were recorded by counting and weighing seeds. 3 In the earlier sampling round, a lower species richness of insect visitors was observed in fields that had received an early application of insecticide. No negative impacts were found from later applications. The results obtained suggest a greater potential harm to insect pollinators and flower visitation as a result of insecticide application early in the season. 4 No reduction in pollination was found in fields that received an early insecticide application. Pollination was greater with two insecticide applications between sampling rounds rather than one application. 5 In the present study system, insecticide application had a negative effect on pollinators but a possible positive effect on pollination services. In some cases, it may be that actions for conserving biodiversity will not benefit pollination services to all plants.

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Purpose – The purpose of this paper is to draw together the previous academic and industry research on non-attendance of cultural attractions, followed by qualitative in-depth interviews to identify commonalities or gaps in the previous research on barriers, constraints and inhibitors, as well as to propose linkages between these.

Design/methodology/approach –
A multi-method approach is used – where barriers, constraints and inhibitors are identified by means of thematic content analysis of the literature. A set of probing questions is developed based on these themes and is then examined in in-depth interviews with individuals that had not visited cultural attractions in the past two years, in an attempt to triangulate data, as well as to identify connections between barriers.

Findings – From the literature, eight interconnected barriers to visitation are identified: physical access; personal access; cost; time and timing; product; personal interest and peer group; socialisation and understanding; and information. The in-depth interviews generally support these, although it is also identified that there are complex interrelationships between the issues.

Originality/value – This paper addresses the neglected question of why people do not attend cultural attractions by triangulating thematic findings from the content analysis of diverse literature with in-depth interview responses from one non-visitor segment. This results in an interconnected model of barriers that can be used to assist managers to develop strategies addressing low visitation rates within targeted segments.

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In many places the expansion of urban areas has brought recreationists into close proximity to nature conservation areas, sometimes leading to conflict where recreation and sensitive environmental or natural values are incompatible. An important first step in managing these conflicts is to assess the degree and nature of the problem. We describe the application, and methodological considerations, associated with the use of an innovative, low-cost, practical technique to monitor human intrusions into a wetland reserve which has been designated as ‘off-limits’ to the general public. The use of seven frequently monitored sand pads over 13 weeks enabled us to determine that intrusions occurred in every week (3–14 per sand pad), deep inside the reserve during most weeks, and also identified the key access points. Most intrusions occurred during holiday periods and were by walkers or cyclists. We also conducted a series of simple experiments to examine the utility of sand pads. Our sand pads maintained their shape well and held footprints for over 1 month, they were rarely avoided by people and provided reliable indices of the level of human activity. Sand hardness varied with rainfall, and hardened sand was frequent (53.8% of 26 days) and potentially prevented detection of people. We conclude that the sand pad technique is an effective and efficient tool to measure recreational use of off-limits areas and other conservation and recreation areas, provided human traffic is not too intense, and that checks are made reasonably frequently.

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The study employed a randomised controlled trial design to determine whether a companion animal intervention had any effect on wellbeing and quality of life in patients who were admitted to hospital after suffering a stroke. The study found significant benefits for their wellbeing and improvements in quality of life.

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Event organisers invest considerable effort in developing, promoting and conducting events with the expectation that not only will new participants be attracted to future events but also that those who have attended will make repeat visitations. This study addresses this issue by investigating the type of events that attract repeat visitation and the possible reasons for these repeat visitations. Getz's (1997) typology of events is used to classify the events, which were used in the data collection for this research. The study utilises data collected in an origin-based survey to explore which events attract repeat visitors and what motivates this repeat visitation. Whilst marketing literature, and to some degree, tourism literature, have examined repeat purchase and repeat visitation, events literature has not dealt with this to any great extent.

While there has been increased examination of the motivation and behaviour of event visitors (Mohr, Backman et al. 1993; Uysal, Gahan et al. 1993; Crompton and McKay 1997; Tang and Turco 2001) there has been relatively little examination of repeat visitors to events. The emphasis within studies on repeat visitation has been on satisfaction with those events rather than a consideration of a wider range of influencing factors (Gitelson and Crompton 1984; O'Neill, Getz et al. 1999). Those factors may include an interest in a particular type of event, influence of family and friends, whether it is a local community event, the cost - value factor and a variety of other reasons.

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The constraints that curb visitation to parks have received considerable research attention and remain an important issue. Constraints to outdoor leisure in parks include structural barriers, such as cost of entry, interpersonal barriers, for example, lack of a partner to visit with, or intrapersonal barriers, including lack of interest. Using a meta-analysis approach, this article integrates the findings of 22 North American studies with 541 estimates, conducted over a 30-year period, to determine the key constraints to park visitation based on various socio-demographic factors. The findings highlight the varying roles that constraints play in limiting the visitation of people according to race, age, gender, education and income. Gaps in the literature are identified, with implications for encouraging visitation for more constrained groups discussed. An agenda for future research is presented.